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1 | Danfoss Automatic Controls CEP Classified as Business www.danfoss.com/ir Danfoss Industrial Refrigeration Application Tool Single-stage and two-stage ammonia plant with pump separator and hot gas defrosting system Revision no. 08 CEP – 2021-02-26 START
2 | Danfoss Automatic Controls CEP Classified as Business Introduction and disclaimer The application tool is designed to be used as a reference document. The tool aims to provide answers to the various questions relating to industrial refrigeration system control and design. In answering these questions, the principles of different control methods are shown, using Danfoss Industrial Refrigeration products. It is non capacity and performance related, and operating parameters of each application should be considered accordingly before adopting any particular layout. The application drawings are not to be used for construction purposes. Please do not hesitate to contact Danfoss, if you have questions about control methods, application and controls described in this application tool. This document itself, all text, diagrams, drawings and most trademarks in in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved. Example of building layout Single-stage plant Two-stage plant Front page
3 | Danfoss Automatic Controls CEP Classified as Business Cold store #1 Cold store #2 SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 4100 L L G BSV SVA SVA Pump separator SVA LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA HP-Liquid line ICS 3 EVM SVA Hot gas defrosting system SVA QDV 15 Charge valve Equalization line SFA + DSV SNV Receiver SVA To open air SVA BSV CVC ”Wet” return line Liquid line (pump) Hot gas line SNV SNV SVA SNV SNV SV1-3 HP float valve BSV BSV Q – max. Q – max. SNV CHV SVA Electrical heater ICF50-4-43MA ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV Plate Freezer SNV ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV SNV AKS ICE-MATIC ICEDRAW.DK ICE-MATIC ICEDRAW.DK SNV SNV D2500 D2500 SVA KDC KDC SVA SVA SVA SVA REG REG ICC ICD ICS ICS ICC ICD EVRB FIA FIA SVA SVA SVA SVA SVA FIA FIA EVRB SVA SVA SVA SVA SVA SVA SVA SVA ORV ORV POV POV SVA SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SVA+QDV SVA+QDV SNV SNV REG REG SVA SVA SVA SVA SVA SVA SVA SVA ICS 3 SVA CVP BSV ICM 50 FIA SVA REG SVA CHV FIA ICS 1 SVA EVRS ICS1 EVM SVA SVA LLG SNV SVA SNV SVA SVA BSV SNV SNV SCA-X SNV SNV SVA SVA SNV SCA-X FIA FIA 4 1 2 3 5 0 4 1 2 3 5 0 SNV SNV GD SNV ICF50-4-48 GD EKE 400 GD EKE 400 GD EKE 400 EKE 347 SVA SVA Dry suction line Economizer suction line Screw comp. Screw comp. AKS AKS AKS AKS AKS AKS TT TT TT TT SNV SNV SVA SVA SVA SVA SVA Prelube pump Prelube pump KP7 ABS KP7 ABS AKS AKS TT TT SFA+DSV SFA+DSV (To open air) (To open air) (To open air) AKS VLT SNV SVA SVA SVA SNV SVA SVA SNV Water tank Air and non condensable gas ICF15-4 ICF15-4 Air purger - type IPS8 SV1-3 HP float valve Evaporative condenser RT 260A RT 260A SNV SNV SNV CHV CHV EVM LLS 4000 SVA ICS CVP Open Economizer Vessel with side load – PHE/water ICF 25-6-5A REG SVA + QDV SVA ICEDRAW.DK AKS 4100 Cable REG SVA SNV ICF 25-6-5A To open air GD SVA SFA + DSV LLS 4000 SVA Single-stage ammonia plant with thermo syphon oil cooling and economizer (principle) Two-stage plant i Application Handbook Example of building layout Front page Introduction
4 | Danfoss Automatic Controls CEP Classified as Business QDV 15 Receiver SNV SNV SVA SVA Intermediate cooler HP – suction line HP–discharge line QDV 15 CHV HP-Liquid line Liquid line (sub cooled) AKS SVA SVA SVA SFA + DSV SVA AKS HP- reciprocating com pressor ICE DRAW by Kurt C. Hilbrecht SVA SVA LP – suction line LP – discharge line SVA LP- reciprocating compressor Evaporative condenser Hot gas defrosting system AKS VLT SNV Air purger - type IPS8 SVA SVA Charge valve SVA Equalization line SFA + DSV SNV SVA SVA Water rectifier LP - float valve Type SV 4 QDV 15 SVA SVA To open air Wet return line Liquid line (pump) Hot gas line AKS SVA SNV AKS Sight glass kch IC E-MA TIC CHV SNV RE G SVA SVA kch IC E -MA T IC SVA kch IC E -MA T IC kch IC E -MA T IC SVA CHV CHV SVA Differential-pressure system ICS 3 EVM SVA SVA CVC SNV Water tank Air and non condensable gas BSV SVA ICF1 5-4 ICF1 5-4 GD GD GD GD SNV SNV SVA CHV SVA LP– suction line SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 410 0 L L G BSV SVA SVA Pump separator LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA To open air SNV BSV Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV Cold store #1 Cold store #2 BSV SVA SNV SNV SV1-3 HP float valve ICF5 0-4-43M A ICF2 5-6-3RA BSV ICF6 5-3-41 ICF2 0-4-102 D1 SNV CHV Plate Freezer SNV ICF2 5-6-3RA BSV ICF6 5-3-41 ICF2 0-4-102 D1 SNV CHV SNV SVA SVA ICS 3 SVA CVP BSV ICM FIA SVA RE G SVA CHV FIA ICS1 SVA EVRS ICS1 EVM SVA SNV ICF5 0-4-48 GD EKE 400 GD EKE 400 GD EKE 400 RE G ICF 25-6-5A SV1-3 HP float valve SNV SVA SVA SNV ICF1 5-4 ICF1 5-4 SVA To open air SNV SNV SNV SNV EVM ICS 3 CVP EVM SVA BSV LLS 4000 LLS 4000 4 4 Electrical heater AKS 410 0 SNV EKE 347 ICF 25-6-5A RE G Two-stage ammonia plant with pump separator and hot gas defrosting system - principle Front page Example of building layout Introduction Single-stage plant i Application Handbook
5 | Danfoss Automatic Controls CEP Classified as Business Example of building layout - principle ICEDRAW.DK ICEDRAW.DK kch ICE-MATIC L L G Receiver SVA SNV BSV SVA Hot gas defrosting system LP-screw compressor HP-reciprocating compressor Plate freezer Pump separator Evaporative condenser GDA GDA GDA GDA SVA CHV Intermediate cooler ICLX SNV CHV CHV SVA SVA SVA SVA SVA SVA SVA SVA SVA SVA SVA SVA BSV BSV BSV BSV SNV SNV SVA SVA SNV SVA Oil collector Q – max. Q – max. SVA SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SNV SNV 4 1 2 3 5 0 Equalization line SCA-X FIA FIA 4 1 2 3 5 0 QDV 15 SNV SNV ICF 26-6-5A REG BSV ICEDRAW.DK Cold Store Machinery Room Plate freezer Production Q – min. To open air ICF 20-6-2 ICF 20-4-9 ”Wet” return line Liquid line (pump) EVM CVC ICF 25-4-9 ICF 25-6-3B ICS 3 VLT System NO ICLX NC SVA SNV BSV SVA SNV ICF 20-6-2 NO ICLX NC ICF 20-4-9 ICS3 Liquid line (pump) ”Wet” return line ”Dry LP” suction line DIR-R6 DIR-R6 Charge valve CHV SVA SVA SNV Electrical heater ICF20-4-102D1 ICF20-4-102D1 SVA SVA SNV SNV SNV SVA SVA SVA SVA ICE-MATIC ICEDRAW.DK D2500 Oil cooler with heat recover system ICEDRAW.DK ICEDRAW.DK SV1-3 HP float valve ICF15-4 ICF15-4 SVA SVA IPS - air purger ICEDRAW.DK LLS 4000 LLS 4000 Introduction Single-stage plant Two-stage plant i Application Handbook
6 | Danfoss Automatic Controls CEP Classified as Business ICF50-4-43MA ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV SNV GD EKE 400 Cold store #1 Valve station - cold store no. 1 - principle Cold store 2 Single-stage plant Two-stage plant Plate freezer
7 | Danfoss Automatic Controls CEP Classified as Business Cold store #2 ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV SNV GD EKE 400 ICF50-4-48 Valve station - cold store no. 2 - principle Single-stage plant Two-stage plant Cold store 1 Plate freezer
8 | Danfoss Automatic Controls CEP Classified as Business SVA SVA ICS 3 SVA CVP BSV ICM 50 FIA SVA REG SVA CHV FIA ICS 1 SVA EVRS ICS1 EVM SVA SNV GD EKE 400 SNV SNV SNV EVM Plate Freezer Valve station - plate freezer – principle Cold store 2 Cold store 1 Single-stage plant Two-stage plant
9 | Danfoss Automatic Controls CEP Classified as Business BSV SVA GD LP– suction line SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 4100 LLG BSV SVA SVA Pump separator LLG SNV SVA SFA +DSV SVA Oil collector LLS 4000 SVA SVA To open air SNV BSV Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV REG ICF 25-6-5A Liquid from air purger Wet return line Liquid line (pump) Electrical heater Pump separator – two-stage plant - principle i RT - Press Data sheet Single-stage plant Two-stage plant Pump separator Single-stage RT 260A Installation i
10 | Danfoss Automatic Controls CEP Classified as Business SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 4100 LLG BSV SVA SVA Pump separator SVA LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA SNV BSV BSV Q – max. Q – max. SNV Electrical heater SNV SNV SVA BSV SNV SNV SCA-X SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV GD SVA (To open air) RT 260A RT 260A LLS 4000 4 1 2 3 5 0 Liquid line from air purger LP-suction line Liquid line (pump) 4 1 2 3 5 0 Pump separator – single-stage plant - principle Single-stage plant Two-stage plant Pump separator Two-stage i RT - Press Data sheet RT 260A Installation i
11 | Danfoss Automatic Controls CEP Classified as Business AKS VLT SNV SVA SVA Purge connection to air purger Water pump Coil Superheated refigerant gas from compressor - in Condensed refrigerant liquid out – to receiver vessel Drift eliminators Fan and motor Water distribution system Ambient air in Warm air out Ambient air in Make up water Fills (PVC) Example of Evaporative Condenser - principle Single-stage plant Two-stage plant Condenser Air purging and de-frost system i Legionella - info i Condenser Piping i Condenser Application i AKS 32 – 33 Data sheet
12 | Danfoss Automatic Controls CEP Classified as Business ICS 3 EVM SVA Hot gas defrosting system QDV 15 Equalization line SFA + DSV SNV Receiver SVA To open air SVA CVC SNV SVA LLG SNV SVA SNV SVA SVA AKS VLT SNV SVA SVA SVA SNV SVA SVA SNV Water tank Air and non condensable gas ICF15-4 ICF15-4 Air purger - type IPS8 SV1-3 HP- float valve Evaporative condenser BSV SVA SNV SNV SV1-3 HP float valve. For draining condensed refrigerant in hot gas line. To be installed at the lowest point. To pump separator Hot gas line to evaporators ”Wet” return line. Liquid line (pump) Purge connection to air purger Refrigerant vapour from receiver HP-discharge line from compressors Liquid to oil cooler Liquid to oil cooler Liquid and vapour return from oil cooler Liquid and vapour return from oil cooler HP-liquid to economizer or intermediate cooler Water pump Make up water SVA Evaporative condenser, air purging system and hot gas defrosting system - principle Single-stage plant Two-stage plant
13 | Danfoss Automatic Controls CEP Classified as Business SNV SVA SVA SNV Water tank Air and non condensable gas ICF15-4 ICF15-4 Ammonia vapour and non condensable gas from purge points Condensate return to pump separator SV1-3 HP float valve Air purger system – type IPS8 - principle Condenser and air purging system Single-stage plant Two-stage plant IPS 8 User guide i
14 | Danfoss Automatic Controls CEP Classified as Business Control system – Defrost pressure with drain of condensed refrigerant - principle Condenser and air purging system Single-stage plant Two-stage plant
15 | Danfoss Automatic Controls CEP Classified as Business ICS 3 EVM SVA SVA CVC SNV Hot gas line to evaporators HP-discharge line from compressors HP-discharge line to condenser ICS 3 EVM CVC SNV Control system de-frost De-frosting system (detailed) - principle Condenser and air purging system Single-stage plant Two-stage plant
16 | Danfoss Automatic Controls CEP Classified as Business Thermo syphon system - principle SVA QDV 15 Equalization line SFA + DSV SNV Receiver SVA ICE-MATIC D2500 SVA KDC SVA SVA REG ICC ICS ICD FIA SVA SVA SVA FIA EVRB SVA SVA SVA SVA ORV POV SNV SNV SNV SNV SNV SNV SVA+QDV SNV REG SVA SVA SVA LLG SNV SVA SNV SVA SVA Screw comp. AKS AKS AKS TT TT SNV SVA SVA SVA Prelube pump KP7 ABS AKS TT SFA+DSV (To open air) SVA CHV To air purger Condensed liquid from condenser HP liquid to system Single-stage plant Two-stage plant
17 | Danfoss Automatic Controls CEP Classified as Business ICEDRAW.D K Economizer suction line Sub-cooled liquid line to pump separator EKE 347 SVA ICS CVP ICF 25-6-5A REG SVA + QDV SVA ICEDRAW.DK AKS 4100 Cable REG SVA SNV ICF 25-6-5A To open air GD SVA SFA + DSV LLS 4000 SVA HP- liquid line from receiver Open economizer vessel with side load – PHE/water Single-stage plant Two-stage plant
18 | Danfoss Automatic Controls CEP Classified as Business REG SNV SNV SNV SVA Liquid from receiver Liquid and vapour to receiver ”Cold” oil to ORV/compressor ”Warm” oil from ORV/compressor SNV Oil cooler – type PHE - principle Single-stage plant Two-stage plant Screw compressor
19 | Danfoss Automatic Controls CEP Classified as Business QDV 15 SVA SVA SVA SFA + DSV SVA AKS SVA (To open air) SNV Liquid line (sub cooled) HP-Liquid line (from receiver) To water rectifier LP – discharge line HP – suction line HP-Liquid line (from receiver) LLS 4000 EKE 347 ICF 25-6-5A REG AKS 4100 SNV Intermediate cooler - principle LLS 4000 Data sheet i LLS 4000 Installation Guide i AKS 32 – 33 Data sheet Single-stage plant Two-stage plant i
20 | Danfoss Automatic Controls CEP Classified as Business QDV 15 Receiver SNV SNV SVA SVA Intermediate cooler QDV 15 HP-Liquid line Liquid line (sub cooled) SVA SVA SVA SFA + DSV SVA AKS SVA SVA SVA Charge valve SVA Equalization line SFA + DSV SNV SVA SVA Water rectifier LP - float valve Type SV 4 QDV 15 SVA SVA To open air AKS Sight glass SNV RE G SVA SVA SVA Differential-pressure system BSV SVA ICF1 5-4 ICF1 5-4 GD GD SNV SVA CHV SVA LP– suction line SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 410 0 L L G BSV SVA SVA Pump separator LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA To open air SNV BSV Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV RE G ICF 25-6-5A To open air SNV ICS 3 CVP EVM SVA BSV LLS 4000 LLS 4000 4 4 Electrical heater AKS 410 0 SNV EKE 347 ICF 25-6-5A RE G Water rectifier system - principle Single-stage plant Two-stage plant
21 | Danfoss Automatic Controls CEP Classified as Business LP - float valve Type SV 4 QDV 15 SVA SVA Sight glass REG SVA SVA ICF15-4 ICF15-4 GD SVA SVA SNV ICS 3 CVP EVM SVA BSV Liquid line (sub cooled) To pump separator. Liquid line (from pump) Liquid line (intermediate cooler) Suction line to ”wet” return line HP-Liquid line SNV SNV Water rectifier - principle Differential pressure system Single-stage plant Two-stage plant Water rectifier system
22 | Danfoss Automatic Controls CEP Classified as Business SVA SVA SNV EVM CVPP-L ICS 3 Differential-pressure system - principle Single-stage plant Two-stage plant Water rectifier system
23 | Danfoss Automatic Controls CEP Classified as Business ICE-MATIC ICEDRAW.DK D2500 KDC SVA SVA REG ICD ICS ICC EVRB FIA SVA SVA FIA SVA SVA SVA SVA ORV POV SVA SNV SNV SNV SNV SNV SNV SVA+QDV SNV REG SVA SVA SVA SVA Economizer suction line AKS AKS AKS TT TT SNV SVA SVA Prelube pump KP7 ABS AKS TT SFA+DSV (To open air) CHV Oil separator Screw compressor with oil separator - principle i AKS 32 – 33 Data sheet i Temperature sensor Data sheet Single-stage plant Two-stage plant
24 | Danfoss Automatic Controls CEP Classified as Business Screw compressor economizer line system - principle ICD ICS ICC FIA SVA SNV EVM From Economizer vessel Compressor side load port ICS CVP SVA Single-stage plant Two-stage plant Screw compressor
25 | Danfoss Automatic Controls CEP Classified as Business ICD + ICV housing - principle Economizer Line Single-stage plant Two-stage plant i ICD-ICC Data sheet Screw compressor i ICD Installation
26 | Danfoss Automatic Controls CEP Classified as Business ICC + ICV housing - principle Economizer Line Single-stage plant Two-stage plant i ICD-ICC Data sheet Screw compressor i ICC Installation
27 | Danfoss Automatic Controls CEP Classified as Business Stop valve Stop valve Access to filter Sight glass Solenoid valve In Out EVRB valve block - principle Single-stage plant Two-stage plant Reciprocating ICECO 400 Reciprocating ICECO 600 Screw compressor Coils i
28 | Danfoss Automatic Controls CEP Classified as Business A B C DANFOSS A B C DANFOSS A B C DANFOSS © ICE DRAW.DK ICE-MATIC Screw compressor ORV FIA SCA SVA SVA MLI MLI SGI Oil separator Oil cooler (Thermo syphon system) To condenser From receiver or priority vessel REG RT5A RT1A Oil regulating valve – type ORV – mixing operation Diverting system ORV Data sheet ORV Installation guide i i Single-stage plant Two-stage plant Screw compressor RT press Data sheet i
29 | Danfoss Automatic Controls CEP Classified as Business A B C DANFOSS A B C DANFOSS A B C DANFOSS Flow from oil separator only Flow from oil cooler and oil separator From oil separator Flow from oil cooler only To compressor To compressor To compressor From oil cooler From oil cooler Oil regulating valve – type ORV – mixing operation From oil separator Data sheet Installation guide i i Mixing system Diverting system Single-stage plant Two-stage plant Screw compressor Cold oil Warm oil From oil cooler From oil separator
30 | Danfoss Automatic Controls CEP Classified as Business © ICE DRAW.DK ICE-MATIC Screw compressor FIA SCA SVA MLI SGI Oil separator Oil cooler (Water cooled system) To condenser RT1A RT5A A B C DANFOSS A B C DANFOSS A B C DANFOSS ORV Oil regulating valve – type ORV – diverting operation Mixing system ORV Data sheet ORV Installation guide i i Single-stage plant Two-stage plant Screw compressor RT press Data sheet i
31 | Danfoss Automatic Controls CEP Classified as Business MLI Oil cooler (Water cooled system) A B C DANFOSS A B C DANFOSS A B C DANFOSS ORV Flow to compressor only Flow to oil cooler and compressor Flow to oil cooler only To compressor To oil cooler Oil regulating valve – type ORV – diverting operation From oil separator Data sheet Installation guide i i Mixing system Diverting system Single-stage plant Two-stage plant Screw compressor To compressor To compressor From oil separator From oil separator To oil cooler To oil cooler Cold oil Warm oil
32 | Danfoss Automatic Controls CEP Classified as Business kch ICE-MATIC ICEDRAW.DK EVRB AKS PT 100 PT 100 KP7ABS SVA Valve manifold for capacity regulation KP77 Oil separator PT 100 AKS SVA CHV Reciprocating compressor –ICECO400 - principle Two-stage plant Single-stage plant Reciprocating comp. ICECO 600 i AKS 32 – 33 Data sheet i Temperature sensor Data sheet
33 | Danfoss Automatic Controls CEP Classified as Business kch ICE-MATIC ICEDRAW.DK EVRB AKS PT 100 CHV SVA AKS AKS PT 100 PT 100 PT 100 KP7ABS Oil separator SVA Valve manifold for capacity regulation Reciprocating compressor – ICECO 600 - principle i AKS 32 – 33 Data sheet i Temperature sensor Data sheet Single-stage plant Two-stage plant Reciprocating comp. ICECO 400
34 | Danfoss Automatic Controls CEP Classified as Business Example of ammonia pump - principle 1 Impellers 2 Front sleeve bearing 3 Top shaft 4 Rear sleeve bearing 5 Connection cable 6 Electrical winding 7 Stator tube 8 Stage casing 9 Liquid inlet 10 Liquid outlet 1 5 3 9 2 10 4 6 7 8 Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Pump Selection Pump info i i Pump installation & operation i
35 | Danfoss Automatic Controls CEP Classified as Business Air purger – type IPS8 - principle Single-stage plant Two-stage plant Air purger system i IPS 8 User guide
36 | Danfoss Automatic Controls CEP Classified as Business LLG SNV SVA LLS 4000 SVA SNV SNV Stand-pipe - AKS 4100 – LLS 4000 – LLG principle AKS 4100 coaxial Instruction AKS 4100 cable Instruction LLG Installation guide Pump separator Two-stage i i LLG Data sheet i AKS 4100 Data sheet i i Single-stage plant Two-stage plant i LLS 4000 Data sheet i LLS 4000 Installation Pump separator Single-stage Open economizer Intermediate cooler
37 | Danfoss Automatic Controls CEP Classified as Business icedraw Orifice Strainer and spring Adjusting spindle Packing ring Float Teflon-valve plate Connection for bottom filling ! Remember to remove the hexagon screwes when not using bottom filling. Valve spindle Spring Connection for float house Valve housing Valve cone (guide) with pin Cover with guide Low pressure float valve – type SV 4, 5, 6 The SV 4 - 6 mounted with special orifice diameter ∅2.5 mm is recommended as pilot float valve for the servo-operated level regulators typePMFL for higher capacities. Technical leaflet Water rectifier i i Installation guide Single-stage plant Two-stage plant
38 | Danfoss Automatic Controls CEP Classified as Business Float housing Label Balance pipe Balance pipe Cover Float Float arm Needle Float orifice Parallel connection Series connection HP float valve type SV1-3 Throttle valve Data sheet i Control system Defrost Condenser and air purging system Installation guide i SV1 -3 Defrost drain Air purger IPS8 Single-stage plant Two-stage plant
39 | Danfoss Automatic Controls CEP Classified as Business 5 mm Balance pipe Balance pipe Throttle valve Orifice HP float valve type SV1-3 defrost drain SV 1 - 3 can be used as a defrost drain float valve, when one balance pipe is sealed off and the liquid level regulator is mounted with a special kit (code no. 027B2054) consisting of: • Special orifice with a larger kv-value of 0.28 m3/h and SV 3 orifice needle. • Gas drain pipe Gas drain pipe (By-pass) Hot gas line Wet return line Liquid line (pump) NO SVA SVA ICF 20-6-2 SV float ICF 20-4-9 SVA BSV NC ICLX SNV CHV ICEDRAW.DK EVRST FIA Needle P - connection Data sheet i Installation guide i Single-stage plant Two-stage plant SV1 -3 S - connection
40 | Danfoss Automatic Controls CEP Classified as Business EKE 347 Liquid Level Controller SVA GD LP– suction line SVA QDV 15 Q – min. EKE 347 AKS 4100 LLG BSV SVA Pump separator LLG SNV SVA SFA +DSV SVA LLS 4000 SVA SVA To open air SNV V Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV SVA REG REG ICF 25-6-5A 4 1 2 3 5 0 4 1 2 3 5 0 Liquid from air purger EKE 347 Data sheet Pump separator Two-stage i EKE 347 Installation i Single-stage plant Two-stage plant Pump separator Single-stage Open economizer Intermediate cooler
41 | Danfoss Automatic Controls CEP Classified as Business EKE 400 Evaporator Controller Cold room 2 Single-stage plant Two-stage plant Cold room 1 Plate freezer EKE 400 Installation guide i EKE 400 Data sheet i EKE 400 Brochure i Defrost Sequence
42 | Danfoss Automatic Controls CEP Classified as Business EKE 400 Defrost Sequence Cold room 2 Single-stage plant Two-stage plant Cold room 1 Plate freezer EKE 400 Installation guide i EKE 400 Data sheet i EKE 400 Brochure i EKE 400
43 | Danfoss Automatic Controls CEP Classified as Business GD Gas Sensor Basic Premium Heavy duty Replacement sensors Premium Data sheet i Basic Data Sheet i Heavy duty Data sheet i Replecemenmt sensor User guide i Pump separator Two-stage Single-stage plant Two-stage plant Pump separator Single-stage GD Application Guide i GD User guide i Open economizer GD Installation guide i GD system
44 | Danfoss Automatic Controls CEP Classified as Business GD Gas Sensor System overview Warning module Data sheet i Warning modulel Installation guide i Controller unit Data sheet i Application guide i Expansion module Data sheet i Installation guide i Pump separator Two-stage Single-stage plant Two-stage plant Pump separator Single-stage GD Application Guide i PC Tool Data sheet i Open economizer PC Tool Installation guide i GD sensor If more than 900m, expansion module can work as repeater and extends another 900m Length up to 900m – up to 96 sensors Up to 7 expansion modules Up to 32 relays (with 7 expansion modules) Up to 96 sensors connected via Fieldbus
45 | Danfoss Automatic Controls CEP Classified as Business SW Semi Welded Plate Heat Exchanger Thermo Syphon system Single-stage plant Two-stage plant i PHE application guide i PHE User guide Screw compressor Open economizer PHE Brochure i PHE Flow PHE Plates
46 | Danfoss Automatic Controls CEP Classified as Business Welded cassette Welded cassette WARM MEDIA COLD MEDIA SW Semi Welded Plate Heat Exchanger Flow diagram Thermo Syphon system Single-stage plant Two-stage plant Screw compressor Open economizer i PHE application guide i PHE User guide PHE Brochure i PHE Photo PHE Plates PHE Animation i
47 | Danfoss Automatic Controls CEP Classified as Business SW Semi Welded Plate Heat Exchanger Plates Thermo Syphon system Single-stage plant Two-stage plant Screw compressor Open economizer i PHE application guide i PHE User guide PHE Brochure i PHE Flow PHE Photo
48 | Danfoss Automatic Controls CEP Classified as Business ICF 65-3-41 – ICLX - principle ICF Data sheet i ICF Installation i Cold store 2 Cold store 1 Single-stage plant Two-stage plant ICF-65-3-42 With ICS Plate freezer ICF-50-4-43MA With ICM ICF-50-4-48 With ICSH
49 | Danfoss Automatic Controls CEP Classified as Business ICF 65-3-42 – ICS 3 - principle ICF-65-3-41 With ICLX ICF Data sheet i ICF Installation i Single-stage plant Two-stage plant Plate freezer Cold store 2 Cold store 1 ICF-50-4-43MA With ICM ICF-50-4-48 With ICSH
50 | Danfoss Automatic Controls CEP Classified as Business ICF 50-4-43MA – ICM - principle Plate freezer Cold store 2 Cold store 1 ICF Data sheet i ICF Installation i Single-stage plant Two-stage plant ICF-65-3-42 With ICS ICF-65-3-42 With ICLX ICF-50-4-48 With ICSH
51 | Danfoss Automatic Controls CEP Classified as Business ICF 50-4-48 – ICSH - principle ICF Data sheet i ICF Installation i Single-stage plant Two-stage plant Plate freezer Cold store 2 Cold store 1 ICF-65-3-42 With ICS ICF-65-3-41 With ICLX ICF-50-4-43MA With ICM ICSH Animation
52 | Danfoss Automatic Controls CEP Classified as Business ICFS 25 Stop valve module ICFE 25 Solenoid valve module ICFS 25 Stop valve module ICM 25 Motor valve module ICFF 25 Filter module ICF 25-6 Housing ICF 25-6-5A - principle Pump separator Two-stage Plate freezer Cold store 2 Cold store 1 ICFE 25-6-3RA Open economizer Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i ICFE 25 solenoid valve module Intermediate cooler
53 | Danfoss Automatic Controls CEP Classified as Business ICF 25-6 housing ICFC 25 check valve module ICFF 25 filter module ICFS 25 stop valve module ICFS 25 stop valve module ICFR 25 manual regulating valve module ICFE 25 solenoid valve module ICF 25-6-3RA - principle ICFE 25 solenoid valve module Cold store 2 Cold store 1 Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i Plate freezer ICF25-6-5A
54 | Danfoss Automatic Controls CEP Classified as Business ICFE 25 - principle ICF25-6-3RA ICF25-6-5A Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i
55 | Danfoss Automatic Controls CEP Classified as Business ICF 20-4-102D1 - principle Single-stage plant Two-stage plant Cold store 1 Cold store 2 ICFD Installation ICFD Application guidelines i i ICF Data sheet ICF Installation i i Plate freezer
56 | Danfoss Automatic Controls CEP Classified as Business ICF 15-4 - principle Air purger – IPS8 Water rectifier Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i
57 | Danfoss Automatic Controls CEP Classified as Business EVM Pilot channels Circular groove Equalization orifice Piston Cylinder Pilot channel Valve Plate Cone Spring Manual operating spindle Pressure gauge connection Marking label Piston rod O-ring Pilot controlled servo valve – type ICS1- principle Cold store 1 Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant Cold store 2 Plate freezer Economizer Line
58 | Danfoss Automatic Controls CEP Classified as Business ICS3 – CVP-L – EVM - principle CVP-L EVM ICS 3 Manual operating spindle ICS 100 – 125 Installation guide Plate freezer Cold store 1 Water rectifier Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i i Single-stage plant Two-stage plant Cold store 2
59 | Danfoss Automatic Controls CEP Classified as Business ICS 3 – CVC - EVM - principle EVM ICS 3 CVC Manual operating spindle ICS + CVC Defrost system Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant
60 | Danfoss Automatic Controls CEP Classified as Business ICS 3 – CVPP-L - EVM - principle CVPP-L EVM ICS3 Manual operating spindle Differential pressure system Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant
61 | Danfoss Automatic Controls CEP Classified as Business ICS1 - CVP-L - principle Open economizer Economizer Line Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant
62 | Danfoss Automatic Controls CEP Classified as Business Magnetic coupling Actuator type ICAD Function module Top cover Valve body ICM Quick start guide ICM 100 - 150 Installation guide Motor valve - type ICM and actuator type ICAD Single-stage plant Two-stage plant ICM - ICAD Data sheet ICM - detail ICAD Instruction i i Magnetic coupling i ICM 20 - 65 Installation i ICM 100-150 i Plate freezer Cold store 1 Cold store 2 ICAD Quick guide i
63 | Danfoss Automatic Controls CEP Classified as Business Magnetic coupling - External (ICAD) Magnetic coupling - Internal Actuator Function module Motor valve and actuator magnetic coupling system - principle ICAD Instruction ICM Quick start guide i i i ICM 20 - 65 Installation i Two-stage plant i ICAD Quick guide i ICM - detail ICM - ICAD ICM 100-150 Animation Plate freezer Cold store 1 Cold store 2 Single-stage plant ICM 100-150 Installation ICM - ICAD Data sheet
64 | Danfoss Automatic Controls CEP Classified as Business Magnetic coupling (internal) O-ring O-ring Gasket Piston Spindle Top housing Top cover Label Valve seat Valve plate Valve body Function module Throttle cone Motor valve - type ICM ICAD Instruction ICM Quick start guide i i i ICM 20 - 65 Installation i Two-stage plant i ICAD Quick guide i ICM - ICAD Magnetic coupling ICM 100-150 Animation Plate freezer Cold store 1 Cold store 2 Single-stage plant ICM 100-150 Installation ICM - ICAD Data sheet
65 | Danfoss Automatic Controls CEP Classified as Business ICEDRAW.DK ICEDRAW.DK - Two step Solenoid valve – type ICLX - Principle Plate freezer Cold store 1 ICF 65 - 3 - 41 Single-stage plant Two-stage plant Cold store 2 ICLX Animation ICLX Data sheet i ICLX 32-65 Installation i ICLX 100-150 Installation i ICLX Function
66 | Danfoss Automatic Controls CEP Classified as Business Two step Solenoid valve – type ICLX - Function No flow Full flow Bleed flow External pressure Inlet pressure Outlet pressure ICLX Animation Plate freezer Cold store 1 ICF 65 - 3 - 41 ICLX Data sheet i ICLX 32-65 Installation i Single-stage plant Two-stage plant Cold store 2 ICLX 100-150 Installation i ICLX Principle External pressure > Inlet pressure + 2bar In the opening moment Inlet pressure < Outlet pressure + 1,25bar
67 | Danfoss Automatic Controls CEP Classified as Business Coil Armature Diaphragm Manual opener Cabel connection Valve body Solenoid valve – type EVRS 20 Data sheet i Animation Installation guide i Single-stage plant Two-stage plant Plate freezer Pilot orifice
68 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Bonnet, flange Cone, Cone seal Balls O-ring Identification ring Bolts Gasket Fiber, Non-asbestos Packing washer - Aluminium Disc spring Housing Bonnet, insert Spring loaded Teflon ring Stop valve – type SVA 15–20 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
69 | Danfoss Automatic Controls CEP Classified as Business Cap Packing gland Bonnet, flange Identification ring Bolts Housing Bonnet, insert Spindle Cone, Cone seal Balls O-ring Gasket Fiber, Non-asbestos Packing washer - Aluminium Disc spring Spring loaded Teflon ring O-ring Stop valve – type SVA-S 25–40 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
70 | Danfoss Automatic Controls CEP Classified as Business Housing Cap Packing gland Bonnet, flange Bolts O-ring Gasket for cap Identification ring Bonnet, insert Cone and Cone seal Spindle Packing washer - Aluminium Spring loaded Teflon ring O-ring Disk spring Gasket - Fibre, non asbestos Straightway stop valve – type SVA-S 25-40 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
71 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Bonnet Soft back seat Balls O-ring Cone, Cone seal Gasket - non asbestos Housing Disc spring O-ring Grease Spring loaded Teflon ring Packing washer - Aluninium Stop valve – type SVA-S 50–65 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer
72 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Valve bonnet Cone, Cone seal O-ring Balls Gasket - non asbestos Housing Disc spring Grease Spring loaded Teflon ring Packing washer - Aluninium O-ring Bolts Straightway stop valve – type SVA-S 50-65 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
73 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Valve bonnet Cone, Cone seal Balls Soft back seat O-ring Identification ring Bolts Gasket Disc spring Grease Packing washer - Aluninium Spring loaded Teflon ring O-ring Stop valve – type SVA-S 80-150 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
74 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Valve bonnet Back seat Cone, Cone seal Balls O-ring Identification ring Gasket Grease Disc spring O-ring Gasket Spring loaded Teflon ring Packing washer - Aluninium Straightway stop valve – type SVA 80-150 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer
75 | Danfoss Automatic Controls CEP Classified as Business Spindle Housing Seal cap Gasket f. seal cap Packing gland Identification ring Bonnet, Flange O-ring Disk spring Gasket - non asbestos Cone Bonnet, Insert Packing washer - Aluminium Spring loaded Teflon ring O-ring O-ring Regulating valve – type REG-SA and REG-SB 15-40 Data sheet i i Installation guide Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
76 | Danfoss Automatic Controls CEP Classified as Business Housing Seal cap Packing gland Bonnet, Flange Gasket - non asbestos Spring loaded Teflon ring Spindle Identification ring Cone Bonnet, Insert Packing washer - Aluminium O-ring O-ring Disk spring O-ring Regulating valve – type REG-SA and REG-SB 15-40 Data sheet i i Installation guide Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
77 | Danfoss Automatic Controls CEP Classified as Business Spindle seal cap and gasket Gasket Fiber, non asbestos Cylinder with seat Bolts O-ring Housing Guide sleeve Spring ring Spring Teflon ring Marking label Spring loaded Teflon ring Valve bonnet Packing washer - Aluminium O-ring Packing gland Valve plate Stop check valve type SCA-X 50-125 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer
78 | Danfoss Automatic Controls CEP Classified as Business Identification ring O-ring Housing Cone Spring Gasket Bonnet, Insert Bonnet, Flange Bolts Valve seat Check valve type CHV 15-40 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
79 | Danfoss Automatic Controls CEP Classified as Business End cover Gasket Bolts Valve plate O-ring Housing Guide sleeve Spring ring Spring Teflon ring Marking label Cylinder with seat Check valve – type CHV-X 50-125 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer
80 | Danfoss Automatic Controls CEP Classified as Business Housing Gasket Cover Bolts Marking label Filter element Pressure relief (screw) Packing washer Filter – type FIA 15-40 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer Screw compressor
81 | Danfoss Automatic Controls CEP Classified as Business Housing Gasket Cover Bolts - Stainless steel Marking label - Aluminium Filter element Pressure relief (screw) Packing washer - Aluminium Filter – type FIA 50-200 Data sheet i i Installation guide Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer
82 | Danfoss Automatic Controls CEP Classified as Business Spindle seal cap Gland nut (Steel) Sealing ring (Teflon) Spindle Valve seat Seal cap gasket Locking ring (Steel) Stop needle valve – type SNV Data sheet i Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
83 | Danfoss Automatic Controls CEP Classified as Business Valve seat Spring Marking label Valve spindle Valve top Valve housing Valve cone Retainer Valve cone seal Steel ball Double stop valve - type DSV1 Safety relief valve, type SFA 15 and double stop valve, type DSV1 DSV 1+2 Data sheet SFA 15 Data sheet i i DSV 1+2 Installation guide i SFA 15 Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer
84 | Danfoss Automatic Controls CEP Classified as Business Housing Valve seat Spring Valve cone Valve spindle Valve top Plug Marking label Double stop valve assembly Safety relief valve, type SFV and double stop valve, type DSV2 SFV 20 - 25 Data sheet i SFV 20 - 25 Installation guide i DSV 1+2 Data sheet i DSV 1+2 Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer Intermediate cooler
85 | Danfoss Automatic Controls CEP Classified as Business Valve seat Spring Threaded plug Valve spindle Valve top Valve housing Valve cone ID label Bellow O-rings Gasket -Aluminium Bleed hole Gasket -Aluminium Safety relief valve – type BSV 8 Data sheet i Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer BSV & POV
86 | Danfoss Automatic Controls CEP Classified as Business Pilot operated internal safety valve – type POV - principle BSV – back pressure independent safety valve POV – pilot operated safety valve Compressor POV Data sheet BSV i i POV Installation guide BSV Data sheet i BSV Installation guide i Single-stage plant Two-stage plant Screw compressor Suction Discharge
87 | Danfoss Automatic Controls CEP Classified as Business Cylinder Gasket Bonnet Glyde ring and O-ring Spring Cone rod O-ring Bushing for spring Screw for spring Valve house Connection to compressor - suction side Teflon ring Cone Piston Spring Piston rod O-ring Multifunctional compressor valve – type KDC KDC-function Data sheet Instructions i i Single-stage plant Two-stage plant Screw compressor
88 | Danfoss Automatic Controls CEP Classified as Business Connection to compressor suction side Step 1 Step 2 Step 3 The KDC valve is force-controlled so that when pressure in the oil separator becomes 2 bar (29 psi) higher than the suction pressure, the spring is compressed and the valve opens. In low pressure units (boosters), the spring requires a differential pressure of 0.5 bar (7 psi) for the valve to open. Multifunctional compressor valve – type KDC KDC - detailed Data sheet Instructions i i Single-stage plant Two-stage plant Screw compressor
89 | Danfoss Automatic Controls CEP Classified as Business Spindle Bonnet Spring Housing O-ring Cone Quick closing oil drain valve – type QDV 15 Data sheet i Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer Intermediate cooler
90 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type EVM ICS 3 with CVP+EVM Single-stage plant Two-stage plant Pilot valves Data sheet i ICS 1 CVC+EVM i Pilot valves Installation ICLX ICS3 CVPP+EVM ICS1 EVM EVM – NC Shown with flow i.e. coil is energized EVM – NO Shown with flow i.e. coil is de-energized
91 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type CVP-L ICS 3 with CVP-L+ EVM Single-stage plant Two-stage plant Pilot valves Data sheet i ICS 1 with CVP i Pilot valves Installation
92 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type CVPP-L ICS3-CVPP-L Pilot valves Data sheet i i Pilot valves Installation Single-stage plant Two-stage plant
93 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type CVC-L ICS3 CVC-EVM Single-stage plant Two-stage plant Pilot valves Data sheet i i Pilot valves Installation Pilot flow
94 | Danfoss Automatic Controls CEP Classified as Business B S External RESET button Internal RESET button S = Pressure control with internal reset B = Pressure control with external reset Pressure switch KP 7ABS / KP 7BS Protection against high discharge pressure. KP Pressure Data sheet i i KP 7ABS / 7BS Installation guide Single-stage plant Two-stage plant Screw compressor Reciprocating ICECO 400 Reciprocating ICECO 600 Pressure setting spindle Regulating range 8 – 32 bar Fixed differential pressure = 4 bar TESTING S side Tilt the main arm (3). At the same time operate the internal RESET button (25). B side Tilt the arm (19) with e.g. a screwdriver. At the same time operate the external RESET button (30). Be careful not to damage the bellows with the screwdriver! Pressure setting spindle 3 19
Single-stage plant Two-stage plant

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START_TWO STAGE AMMONIA PLANT_CEP_rev08_2021-02-26.pptx

  • 1. 1 | Danfoss Automatic Controls CEP Classified as Business www.danfoss.com/ir Danfoss Industrial Refrigeration Application Tool Single-stage and two-stage ammonia plant with pump separator and hot gas defrosting system Revision no. 08 CEP – 2021-02-26 START
  • 2. 2 | Danfoss Automatic Controls CEP Classified as Business Introduction and disclaimer The application tool is designed to be used as a reference document. The tool aims to provide answers to the various questions relating to industrial refrigeration system control and design. In answering these questions, the principles of different control methods are shown, using Danfoss Industrial Refrigeration products. It is non capacity and performance related, and operating parameters of each application should be considered accordingly before adopting any particular layout. The application drawings are not to be used for construction purposes. Please do not hesitate to contact Danfoss, if you have questions about control methods, application and controls described in this application tool. This document itself, all text, diagrams, drawings and most trademarks in in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved. Example of building layout Single-stage plant Two-stage plant Front page
  • 3. 3 | Danfoss Automatic Controls CEP Classified as Business Cold store #1 Cold store #2 SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 4100 L L G BSV SVA SVA Pump separator SVA LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA HP-Liquid line ICS 3 EVM SVA Hot gas defrosting system SVA QDV 15 Charge valve Equalization line SFA + DSV SNV Receiver SVA To open air SVA BSV CVC ”Wet” return line Liquid line (pump) Hot gas line SNV SNV SVA SNV SNV SV1-3 HP float valve BSV BSV Q – max. Q – max. SNV CHV SVA Electrical heater ICF50-4-43MA ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV Plate Freezer SNV ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV SNV AKS ICE-MATIC ICEDRAW.DK ICE-MATIC ICEDRAW.DK SNV SNV D2500 D2500 SVA KDC KDC SVA SVA SVA SVA REG REG ICC ICD ICS ICS ICC ICD EVRB FIA FIA SVA SVA SVA SVA SVA FIA FIA EVRB SVA SVA SVA SVA SVA SVA SVA SVA ORV ORV POV POV SVA SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SNV SVA+QDV SVA+QDV SNV SNV REG REG SVA SVA SVA SVA SVA SVA SVA SVA ICS 3 SVA CVP BSV ICM 50 FIA SVA REG SVA CHV FIA ICS 1 SVA EVRS ICS1 EVM SVA SVA LLG SNV SVA SNV SVA SVA BSV SNV SNV SCA-X SNV SNV SVA SVA SNV SCA-X FIA FIA 4 1 2 3 5 0 4 1 2 3 5 0 SNV SNV GD SNV ICF50-4-48 GD EKE 400 GD EKE 400 GD EKE 400 EKE 347 SVA SVA Dry suction line Economizer suction line Screw comp. Screw comp. AKS AKS AKS AKS AKS AKS TT TT TT TT SNV SNV SVA SVA SVA SVA SVA Prelube pump Prelube pump KP7 ABS KP7 ABS AKS AKS TT TT SFA+DSV SFA+DSV (To open air) (To open air) (To open air) AKS VLT SNV SVA SVA SVA SNV SVA SVA SNV Water tank Air and non condensable gas ICF15-4 ICF15-4 Air purger - type IPS8 SV1-3 HP float valve Evaporative condenser RT 260A RT 260A SNV SNV SNV CHV CHV EVM LLS 4000 SVA ICS CVP Open Economizer Vessel with side load – PHE/water ICF 25-6-5A REG SVA + QDV SVA ICEDRAW.DK AKS 4100 Cable REG SVA SNV ICF 25-6-5A To open air GD SVA SFA + DSV LLS 4000 SVA Single-stage ammonia plant with thermo syphon oil cooling and economizer (principle) Two-stage plant i Application Handbook Example of building layout Front page Introduction
  • 4. 4 | Danfoss Automatic Controls CEP Classified as Business QDV 15 Receiver SNV SNV SVA SVA Intermediate cooler HP – suction line HP–discharge line QDV 15 CHV HP-Liquid line Liquid line (sub cooled) AKS SVA SVA SVA SFA + DSV SVA AKS HP- reciprocating com pressor ICE DRAW by Kurt C. Hilbrecht SVA SVA LP – suction line LP – discharge line SVA LP- reciprocating compressor Evaporative condenser Hot gas defrosting system AKS VLT SNV Air purger - type IPS8 SVA SVA Charge valve SVA Equalization line SFA + DSV SNV SVA SVA Water rectifier LP - float valve Type SV 4 QDV 15 SVA SVA To open air Wet return line Liquid line (pump) Hot gas line AKS SVA SNV AKS Sight glass kch IC E-MA TIC CHV SNV RE G SVA SVA kch IC E -MA T IC SVA kch IC E -MA T IC kch IC E -MA T IC SVA CHV CHV SVA Differential-pressure system ICS 3 EVM SVA SVA CVC SNV Water tank Air and non condensable gas BSV SVA ICF1 5-4 ICF1 5-4 GD GD GD GD SNV SNV SVA CHV SVA LP– suction line SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 410 0 L L G BSV SVA SVA Pump separator LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA To open air SNV BSV Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV Cold store #1 Cold store #2 BSV SVA SNV SNV SV1-3 HP float valve ICF5 0-4-43M A ICF2 5-6-3RA BSV ICF6 5-3-41 ICF2 0-4-102 D1 SNV CHV Plate Freezer SNV ICF2 5-6-3RA BSV ICF6 5-3-41 ICF2 0-4-102 D1 SNV CHV SNV SVA SVA ICS 3 SVA CVP BSV ICM FIA SVA RE G SVA CHV FIA ICS1 SVA EVRS ICS1 EVM SVA SNV ICF5 0-4-48 GD EKE 400 GD EKE 400 GD EKE 400 RE G ICF 25-6-5A SV1-3 HP float valve SNV SVA SVA SNV ICF1 5-4 ICF1 5-4 SVA To open air SNV SNV SNV SNV EVM ICS 3 CVP EVM SVA BSV LLS 4000 LLS 4000 4 4 Electrical heater AKS 410 0 SNV EKE 347 ICF 25-6-5A RE G Two-stage ammonia plant with pump separator and hot gas defrosting system - principle Front page Example of building layout Introduction Single-stage plant i Application Handbook
  • 5. 5 | Danfoss Automatic Controls CEP Classified as Business Example of building layout - principle ICEDRAW.DK ICEDRAW.DK kch ICE-MATIC L L G Receiver SVA SNV BSV SVA Hot gas defrosting system LP-screw compressor HP-reciprocating compressor Plate freezer Pump separator Evaporative condenser GDA GDA GDA GDA SVA CHV Intermediate cooler ICLX SNV CHV CHV SVA SVA SVA SVA SVA SVA SVA SVA SVA SVA SVA SVA BSV BSV BSV BSV SNV SNV SVA SVA SNV SVA Oil collector Q – max. Q – max. SVA SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SNV SNV 4 1 2 3 5 0 Equalization line SCA-X FIA FIA 4 1 2 3 5 0 QDV 15 SNV SNV ICF 26-6-5A REG BSV ICEDRAW.DK Cold Store Machinery Room Plate freezer Production Q – min. To open air ICF 20-6-2 ICF 20-4-9 ”Wet” return line Liquid line (pump) EVM CVC ICF 25-4-9 ICF 25-6-3B ICS 3 VLT System NO ICLX NC SVA SNV BSV SVA SNV ICF 20-6-2 NO ICLX NC ICF 20-4-9 ICS3 Liquid line (pump) ”Wet” return line ”Dry LP” suction line DIR-R6 DIR-R6 Charge valve CHV SVA SVA SNV Electrical heater ICF20-4-102D1 ICF20-4-102D1 SVA SVA SNV SNV SNV SVA SVA SVA SVA ICE-MATIC ICEDRAW.DK D2500 Oil cooler with heat recover system ICEDRAW.DK ICEDRAW.DK SV1-3 HP float valve ICF15-4 ICF15-4 SVA SVA IPS - air purger ICEDRAW.DK LLS 4000 LLS 4000 Introduction Single-stage plant Two-stage plant i Application Handbook
  • 6. 6 | Danfoss Automatic Controls CEP Classified as Business ICF50-4-43MA ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV SNV GD EKE 400 Cold store #1 Valve station - cold store no. 1 - principle Cold store 2 Single-stage plant Two-stage plant Plate freezer
  • 7. 7 | Danfoss Automatic Controls CEP Classified as Business Cold store #2 ICF25-6-3RA BSV ICF65-3-41 ICF20-4-102D1 SNV CHV SNV GD EKE 400 ICF50-4-48 Valve station - cold store no. 2 - principle Single-stage plant Two-stage plant Cold store 1 Plate freezer
  • 8. 8 | Danfoss Automatic Controls CEP Classified as Business SVA SVA ICS 3 SVA CVP BSV ICM 50 FIA SVA REG SVA CHV FIA ICS 1 SVA EVRS ICS1 EVM SVA SNV GD EKE 400 SNV SNV SNV EVM Plate Freezer Valve station - plate freezer – principle Cold store 2 Cold store 1 Single-stage plant Two-stage plant
  • 9. 9 | Danfoss Automatic Controls CEP Classified as Business BSV SVA GD LP– suction line SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 4100 LLG BSV SVA SVA Pump separator LLG SNV SVA SFA +DSV SVA Oil collector LLS 4000 SVA SVA To open air SNV BSV Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV REG ICF 25-6-5A Liquid from air purger Wet return line Liquid line (pump) Electrical heater Pump separator – two-stage plant - principle i RT - Press Data sheet Single-stage plant Two-stage plant Pump separator Single-stage RT 260A Installation i
  • 10. 10 | Danfoss Automatic Controls CEP Classified as Business SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 4100 LLG BSV SVA SVA Pump separator SVA LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA SNV BSV BSV Q – max. Q – max. SNV Electrical heater SNV SNV SVA BSV SNV SNV SCA-X SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV GD SVA (To open air) RT 260A RT 260A LLS 4000 4 1 2 3 5 0 Liquid line from air purger LP-suction line Liquid line (pump) 4 1 2 3 5 0 Pump separator – single-stage plant - principle Single-stage plant Two-stage plant Pump separator Two-stage i RT - Press Data sheet RT 260A Installation i
  • 11. 11 | Danfoss Automatic Controls CEP Classified as Business AKS VLT SNV SVA SVA Purge connection to air purger Water pump Coil Superheated refigerant gas from compressor - in Condensed refrigerant liquid out – to receiver vessel Drift eliminators Fan and motor Water distribution system Ambient air in Warm air out Ambient air in Make up water Fills (PVC) Example of Evaporative Condenser - principle Single-stage plant Two-stage plant Condenser Air purging and de-frost system i Legionella - info i Condenser Piping i Condenser Application i AKS 32 – 33 Data sheet
  • 12. 12 | Danfoss Automatic Controls CEP Classified as Business ICS 3 EVM SVA Hot gas defrosting system QDV 15 Equalization line SFA + DSV SNV Receiver SVA To open air SVA CVC SNV SVA LLG SNV SVA SNV SVA SVA AKS VLT SNV SVA SVA SVA SNV SVA SVA SNV Water tank Air and non condensable gas ICF15-4 ICF15-4 Air purger - type IPS8 SV1-3 HP- float valve Evaporative condenser BSV SVA SNV SNV SV1-3 HP float valve. For draining condensed refrigerant in hot gas line. To be installed at the lowest point. To pump separator Hot gas line to evaporators ”Wet” return line. Liquid line (pump) Purge connection to air purger Refrigerant vapour from receiver HP-discharge line from compressors Liquid to oil cooler Liquid to oil cooler Liquid and vapour return from oil cooler Liquid and vapour return from oil cooler HP-liquid to economizer or intermediate cooler Water pump Make up water SVA Evaporative condenser, air purging system and hot gas defrosting system - principle Single-stage plant Two-stage plant
  • 13. 13 | Danfoss Automatic Controls CEP Classified as Business SNV SVA SVA SNV Water tank Air and non condensable gas ICF15-4 ICF15-4 Ammonia vapour and non condensable gas from purge points Condensate return to pump separator SV1-3 HP float valve Air purger system – type IPS8 - principle Condenser and air purging system Single-stage plant Two-stage plant IPS 8 User guide i
  • 14. 14 | Danfoss Automatic Controls CEP Classified as Business Control system – Defrost pressure with drain of condensed refrigerant - principle Condenser and air purging system Single-stage plant Two-stage plant
  • 15. 15 | Danfoss Automatic Controls CEP Classified as Business ICS 3 EVM SVA SVA CVC SNV Hot gas line to evaporators HP-discharge line from compressors HP-discharge line to condenser ICS 3 EVM CVC SNV Control system de-frost De-frosting system (detailed) - principle Condenser and air purging system Single-stage plant Two-stage plant
  • 16. 16 | Danfoss Automatic Controls CEP Classified as Business Thermo syphon system - principle SVA QDV 15 Equalization line SFA + DSV SNV Receiver SVA ICE-MATIC D2500 SVA KDC SVA SVA REG ICC ICS ICD FIA SVA SVA SVA FIA EVRB SVA SVA SVA SVA ORV POV SNV SNV SNV SNV SNV SNV SVA+QDV SNV REG SVA SVA SVA LLG SNV SVA SNV SVA SVA Screw comp. AKS AKS AKS TT TT SNV SVA SVA SVA Prelube pump KP7 ABS AKS TT SFA+DSV (To open air) SVA CHV To air purger Condensed liquid from condenser HP liquid to system Single-stage plant Two-stage plant
  • 17. 17 | Danfoss Automatic Controls CEP Classified as Business ICEDRAW.D K Economizer suction line Sub-cooled liquid line to pump separator EKE 347 SVA ICS CVP ICF 25-6-5A REG SVA + QDV SVA ICEDRAW.DK AKS 4100 Cable REG SVA SNV ICF 25-6-5A To open air GD SVA SFA + DSV LLS 4000 SVA HP- liquid line from receiver Open economizer vessel with side load – PHE/water Single-stage plant Two-stage plant
  • 18. 18 | Danfoss Automatic Controls CEP Classified as Business REG SNV SNV SNV SVA Liquid from receiver Liquid and vapour to receiver ”Cold” oil to ORV/compressor ”Warm” oil from ORV/compressor SNV Oil cooler – type PHE - principle Single-stage plant Two-stage plant Screw compressor
  • 19. 19 | Danfoss Automatic Controls CEP Classified as Business QDV 15 SVA SVA SVA SFA + DSV SVA AKS SVA (To open air) SNV Liquid line (sub cooled) HP-Liquid line (from receiver) To water rectifier LP – discharge line HP – suction line HP-Liquid line (from receiver) LLS 4000 EKE 347 ICF 25-6-5A REG AKS 4100 SNV Intermediate cooler - principle LLS 4000 Data sheet i LLS 4000 Installation Guide i AKS 32 – 33 Data sheet Single-stage plant Two-stage plant i
  • 20. 20 | Danfoss Automatic Controls CEP Classified as Business QDV 15 Receiver SNV SNV SVA SVA Intermediate cooler QDV 15 HP-Liquid line Liquid line (sub cooled) SVA SVA SVA SFA + DSV SVA AKS SVA SVA SVA Charge valve SVA Equalization line SFA + DSV SNV SVA SVA Water rectifier LP - float valve Type SV 4 QDV 15 SVA SVA To open air AKS Sight glass SNV RE G SVA SVA SVA Differential-pressure system BSV SVA ICF1 5-4 ICF1 5-4 GD GD SNV SVA CHV SVA LP– suction line SVA NH3 pump NH3 pump QDV 15 Q – min. EKE 347 AKS 410 0 L L G BSV SVA SVA Pump separator LLG SNV SVA SFA +DSV SVA Oil collector SVA SVA To open air SNV BSV Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV RE G ICF 25-6-5A To open air SNV ICS 3 CVP EVM SVA BSV LLS 4000 LLS 4000 4 4 Electrical heater AKS 410 0 SNV EKE 347 ICF 25-6-5A RE G Water rectifier system - principle Single-stage plant Two-stage plant
  • 21. 21 | Danfoss Automatic Controls CEP Classified as Business LP - float valve Type SV 4 QDV 15 SVA SVA Sight glass REG SVA SVA ICF15-4 ICF15-4 GD SVA SVA SNV ICS 3 CVP EVM SVA BSV Liquid line (sub cooled) To pump separator. Liquid line (from pump) Liquid line (intermediate cooler) Suction line to ”wet” return line HP-Liquid line SNV SNV Water rectifier - principle Differential pressure system Single-stage plant Two-stage plant Water rectifier system
  • 22. 22 | Danfoss Automatic Controls CEP Classified as Business SVA SVA SNV EVM CVPP-L ICS 3 Differential-pressure system - principle Single-stage plant Two-stage plant Water rectifier system
  • 23. 23 | Danfoss Automatic Controls CEP Classified as Business ICE-MATIC ICEDRAW.DK D2500 KDC SVA SVA REG ICD ICS ICC EVRB FIA SVA SVA FIA SVA SVA SVA SVA ORV POV SVA SNV SNV SNV SNV SNV SNV SVA+QDV SNV REG SVA SVA SVA SVA Economizer suction line AKS AKS AKS TT TT SNV SVA SVA Prelube pump KP7 ABS AKS TT SFA+DSV (To open air) CHV Oil separator Screw compressor with oil separator - principle i AKS 32 – 33 Data sheet i Temperature sensor Data sheet Single-stage plant Two-stage plant
  • 24. 24 | Danfoss Automatic Controls CEP Classified as Business Screw compressor economizer line system - principle ICD ICS ICC FIA SVA SNV EVM From Economizer vessel Compressor side load port ICS CVP SVA Single-stage plant Two-stage plant Screw compressor
  • 25. 25 | Danfoss Automatic Controls CEP Classified as Business ICD + ICV housing - principle Economizer Line Single-stage plant Two-stage plant i ICD-ICC Data sheet Screw compressor i ICD Installation
  • 26. 26 | Danfoss Automatic Controls CEP Classified as Business ICC + ICV housing - principle Economizer Line Single-stage plant Two-stage plant i ICD-ICC Data sheet Screw compressor i ICC Installation
  • 27. 27 | Danfoss Automatic Controls CEP Classified as Business Stop valve Stop valve Access to filter Sight glass Solenoid valve In Out EVRB valve block - principle Single-stage plant Two-stage plant Reciprocating ICECO 400 Reciprocating ICECO 600 Screw compressor Coils i
  • 28. 28 | Danfoss Automatic Controls CEP Classified as Business A B C DANFOSS A B C DANFOSS A B C DANFOSS © ICE DRAW.DK ICE-MATIC Screw compressor ORV FIA SCA SVA SVA MLI MLI SGI Oil separator Oil cooler (Thermo syphon system) To condenser From receiver or priority vessel REG RT5A RT1A Oil regulating valve – type ORV – mixing operation Diverting system ORV Data sheet ORV Installation guide i i Single-stage plant Two-stage plant Screw compressor RT press Data sheet i
  • 29. 29 | Danfoss Automatic Controls CEP Classified as Business A B C DANFOSS A B C DANFOSS A B C DANFOSS Flow from oil separator only Flow from oil cooler and oil separator From oil separator Flow from oil cooler only To compressor To compressor To compressor From oil cooler From oil cooler Oil regulating valve – type ORV – mixing operation From oil separator Data sheet Installation guide i i Mixing system Diverting system Single-stage plant Two-stage plant Screw compressor Cold oil Warm oil From oil cooler From oil separator
  • 30. 30 | Danfoss Automatic Controls CEP Classified as Business © ICE DRAW.DK ICE-MATIC Screw compressor FIA SCA SVA MLI SGI Oil separator Oil cooler (Water cooled system) To condenser RT1A RT5A A B C DANFOSS A B C DANFOSS A B C DANFOSS ORV Oil regulating valve – type ORV – diverting operation Mixing system ORV Data sheet ORV Installation guide i i Single-stage plant Two-stage plant Screw compressor RT press Data sheet i
  • 31. 31 | Danfoss Automatic Controls CEP Classified as Business MLI Oil cooler (Water cooled system) A B C DANFOSS A B C DANFOSS A B C DANFOSS ORV Flow to compressor only Flow to oil cooler and compressor Flow to oil cooler only To compressor To oil cooler Oil regulating valve – type ORV – diverting operation From oil separator Data sheet Installation guide i i Mixing system Diverting system Single-stage plant Two-stage plant Screw compressor To compressor To compressor From oil separator From oil separator To oil cooler To oil cooler Cold oil Warm oil
  • 32. 32 | Danfoss Automatic Controls CEP Classified as Business kch ICE-MATIC ICEDRAW.DK EVRB AKS PT 100 PT 100 KP7ABS SVA Valve manifold for capacity regulation KP77 Oil separator PT 100 AKS SVA CHV Reciprocating compressor –ICECO400 - principle Two-stage plant Single-stage plant Reciprocating comp. ICECO 600 i AKS 32 – 33 Data sheet i Temperature sensor Data sheet
  • 33. 33 | Danfoss Automatic Controls CEP Classified as Business kch ICE-MATIC ICEDRAW.DK EVRB AKS PT 100 CHV SVA AKS AKS PT 100 PT 100 PT 100 KP7ABS Oil separator SVA Valve manifold for capacity regulation Reciprocating compressor – ICECO 600 - principle i AKS 32 – 33 Data sheet i Temperature sensor Data sheet Single-stage plant Two-stage plant Reciprocating comp. ICECO 400
  • 34. 34 | Danfoss Automatic Controls CEP Classified as Business Example of ammonia pump - principle 1 Impellers 2 Front sleeve bearing 3 Top shaft 4 Rear sleeve bearing 5 Connection cable 6 Electrical winding 7 Stator tube 8 Stage casing 9 Liquid inlet 10 Liquid outlet 1 5 3 9 2 10 4 6 7 8 Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Pump Selection Pump info i i Pump installation & operation i
  • 35. 35 | Danfoss Automatic Controls CEP Classified as Business Air purger – type IPS8 - principle Single-stage plant Two-stage plant Air purger system i IPS 8 User guide
  • 36. 36 | Danfoss Automatic Controls CEP Classified as Business LLG SNV SVA LLS 4000 SVA SNV SNV Stand-pipe - AKS 4100 – LLS 4000 – LLG principle AKS 4100 coaxial Instruction AKS 4100 cable Instruction LLG Installation guide Pump separator Two-stage i i LLG Data sheet i AKS 4100 Data sheet i i Single-stage plant Two-stage plant i LLS 4000 Data sheet i LLS 4000 Installation Pump separator Single-stage Open economizer Intermediate cooler
  • 37. 37 | Danfoss Automatic Controls CEP Classified as Business icedraw Orifice Strainer and spring Adjusting spindle Packing ring Float Teflon-valve plate Connection for bottom filling ! Remember to remove the hexagon screwes when not using bottom filling. Valve spindle Spring Connection for float house Valve housing Valve cone (guide) with pin Cover with guide Low pressure float valve – type SV 4, 5, 6 The SV 4 - 6 mounted with special orifice diameter ∅2.5 mm is recommended as pilot float valve for the servo-operated level regulators typePMFL for higher capacities. Technical leaflet Water rectifier i i Installation guide Single-stage plant Two-stage plant
  • 38. 38 | Danfoss Automatic Controls CEP Classified as Business Float housing Label Balance pipe Balance pipe Cover Float Float arm Needle Float orifice Parallel connection Series connection HP float valve type SV1-3 Throttle valve Data sheet i Control system Defrost Condenser and air purging system Installation guide i SV1 -3 Defrost drain Air purger IPS8 Single-stage plant Two-stage plant
  • 39. 39 | Danfoss Automatic Controls CEP Classified as Business 5 mm Balance pipe Balance pipe Throttle valve Orifice HP float valve type SV1-3 defrost drain SV 1 - 3 can be used as a defrost drain float valve, when one balance pipe is sealed off and the liquid level regulator is mounted with a special kit (code no. 027B2054) consisting of: • Special orifice with a larger kv-value of 0.28 m3/h and SV 3 orifice needle. • Gas drain pipe Gas drain pipe (By-pass) Hot gas line Wet return line Liquid line (pump) NO SVA SVA ICF 20-6-2 SV float ICF 20-4-9 SVA BSV NC ICLX SNV CHV ICEDRAW.DK EVRST FIA Needle P - connection Data sheet i Installation guide i Single-stage plant Two-stage plant SV1 -3 S - connection
  • 40. 40 | Danfoss Automatic Controls CEP Classified as Business EKE 347 Liquid Level Controller SVA GD LP– suction line SVA QDV 15 Q – min. EKE 347 AKS 4100 LLG BSV SVA Pump separator LLG SNV SVA SFA +DSV SVA LLS 4000 SVA SVA To open air SNV V Q – max. Q – max. SNV SNV SNV SVA BSV SNV SNV SCA-X RT 260A RT 260A SNV SNV SVA SVA SNV SCA-X FIA FIA SNV SNV SVA REG REG ICF 25-6-5A 4 1 2 3 5 0 4 1 2 3 5 0 Liquid from air purger EKE 347 Data sheet Pump separator Two-stage i EKE 347 Installation i Single-stage plant Two-stage plant Pump separator Single-stage Open economizer Intermediate cooler
  • 41. 41 | Danfoss Automatic Controls CEP Classified as Business EKE 400 Evaporator Controller Cold room 2 Single-stage plant Two-stage plant Cold room 1 Plate freezer EKE 400 Installation guide i EKE 400 Data sheet i EKE 400 Brochure i Defrost Sequence
  • 42. 42 | Danfoss Automatic Controls CEP Classified as Business EKE 400 Defrost Sequence Cold room 2 Single-stage plant Two-stage plant Cold room 1 Plate freezer EKE 400 Installation guide i EKE 400 Data sheet i EKE 400 Brochure i EKE 400
  • 43. 43 | Danfoss Automatic Controls CEP Classified as Business GD Gas Sensor Basic Premium Heavy duty Replacement sensors Premium Data sheet i Basic Data Sheet i Heavy duty Data sheet i Replecemenmt sensor User guide i Pump separator Two-stage Single-stage plant Two-stage plant Pump separator Single-stage GD Application Guide i GD User guide i Open economizer GD Installation guide i GD system
  • 44. 44 | Danfoss Automatic Controls CEP Classified as Business GD Gas Sensor System overview Warning module Data sheet i Warning modulel Installation guide i Controller unit Data sheet i Application guide i Expansion module Data sheet i Installation guide i Pump separator Two-stage Single-stage plant Two-stage plant Pump separator Single-stage GD Application Guide i PC Tool Data sheet i Open economizer PC Tool Installation guide i GD sensor If more than 900m, expansion module can work as repeater and extends another 900m Length up to 900m – up to 96 sensors Up to 7 expansion modules Up to 32 relays (with 7 expansion modules) Up to 96 sensors connected via Fieldbus
  • 45. 45 | Danfoss Automatic Controls CEP Classified as Business SW Semi Welded Plate Heat Exchanger Thermo Syphon system Single-stage plant Two-stage plant i PHE application guide i PHE User guide Screw compressor Open economizer PHE Brochure i PHE Flow PHE Plates
  • 46. 46 | Danfoss Automatic Controls CEP Classified as Business Welded cassette Welded cassette WARM MEDIA COLD MEDIA SW Semi Welded Plate Heat Exchanger Flow diagram Thermo Syphon system Single-stage plant Two-stage plant Screw compressor Open economizer i PHE application guide i PHE User guide PHE Brochure i PHE Photo PHE Plates PHE Animation i
  • 47. 47 | Danfoss Automatic Controls CEP Classified as Business SW Semi Welded Plate Heat Exchanger Plates Thermo Syphon system Single-stage plant Two-stage plant Screw compressor Open economizer i PHE application guide i PHE User guide PHE Brochure i PHE Flow PHE Photo
  • 48. 48 | Danfoss Automatic Controls CEP Classified as Business ICF 65-3-41 – ICLX - principle ICF Data sheet i ICF Installation i Cold store 2 Cold store 1 Single-stage plant Two-stage plant ICF-65-3-42 With ICS Plate freezer ICF-50-4-43MA With ICM ICF-50-4-48 With ICSH
  • 49. 49 | Danfoss Automatic Controls CEP Classified as Business ICF 65-3-42 – ICS 3 - principle ICF-65-3-41 With ICLX ICF Data sheet i ICF Installation i Single-stage plant Two-stage plant Plate freezer Cold store 2 Cold store 1 ICF-50-4-43MA With ICM ICF-50-4-48 With ICSH
  • 50. 50 | Danfoss Automatic Controls CEP Classified as Business ICF 50-4-43MA – ICM - principle Plate freezer Cold store 2 Cold store 1 ICF Data sheet i ICF Installation i Single-stage plant Two-stage plant ICF-65-3-42 With ICS ICF-65-3-42 With ICLX ICF-50-4-48 With ICSH
  • 51. 51 | Danfoss Automatic Controls CEP Classified as Business ICF 50-4-48 – ICSH - principle ICF Data sheet i ICF Installation i Single-stage plant Two-stage plant Plate freezer Cold store 2 Cold store 1 ICF-65-3-42 With ICS ICF-65-3-41 With ICLX ICF-50-4-43MA With ICM ICSH Animation
  • 52. 52 | Danfoss Automatic Controls CEP Classified as Business ICFS 25 Stop valve module ICFE 25 Solenoid valve module ICFS 25 Stop valve module ICM 25 Motor valve module ICFF 25 Filter module ICF 25-6 Housing ICF 25-6-5A - principle Pump separator Two-stage Plate freezer Cold store 2 Cold store 1 ICFE 25-6-3RA Open economizer Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i ICFE 25 solenoid valve module Intermediate cooler
  • 53. 53 | Danfoss Automatic Controls CEP Classified as Business ICF 25-6 housing ICFC 25 check valve module ICFF 25 filter module ICFS 25 stop valve module ICFS 25 stop valve module ICFR 25 manual regulating valve module ICFE 25 solenoid valve module ICF 25-6-3RA - principle ICFE 25 solenoid valve module Cold store 2 Cold store 1 Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i Plate freezer ICF25-6-5A
  • 54. 54 | Danfoss Automatic Controls CEP Classified as Business ICFE 25 - principle ICF25-6-3RA ICF25-6-5A Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i
  • 55. 55 | Danfoss Automatic Controls CEP Classified as Business ICF 20-4-102D1 - principle Single-stage plant Two-stage plant Cold store 1 Cold store 2 ICFD Installation ICFD Application guidelines i i ICF Data sheet ICF Installation i i Plate freezer
  • 56. 56 | Danfoss Automatic Controls CEP Classified as Business ICF 15-4 - principle Air purger – IPS8 Water rectifier Single-stage plant Two-stage plant ICF Data sheet ICF Installation i i
  • 57. 57 | Danfoss Automatic Controls CEP Classified as Business EVM Pilot channels Circular groove Equalization orifice Piston Cylinder Pilot channel Valve Plate Cone Spring Manual operating spindle Pressure gauge connection Marking label Piston rod O-ring Pilot controlled servo valve – type ICS1- principle Cold store 1 Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant Cold store 2 Plate freezer Economizer Line
  • 58. 58 | Danfoss Automatic Controls CEP Classified as Business ICS3 – CVP-L – EVM - principle CVP-L EVM ICS 3 Manual operating spindle ICS 100 – 125 Installation guide Plate freezer Cold store 1 Water rectifier Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i i Single-stage plant Two-stage plant Cold store 2
  • 59. 59 | Danfoss Automatic Controls CEP Classified as Business ICS 3 – CVC - EVM - principle EVM ICS 3 CVC Manual operating spindle ICS + CVC Defrost system Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant
  • 60. 60 | Danfoss Automatic Controls CEP Classified as Business ICS 3 – CVPP-L - EVM - principle CVPP-L EVM ICS3 Manual operating spindle Differential pressure system Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant
  • 61. 61 | Danfoss Automatic Controls CEP Classified as Business ICS1 - CVP-L - principle Open economizer Economizer Line Pilot valves Data sheet i ICS Data sheet i ICS 25-80 Installation guide i ICS 100 – 125 Installation guide i Single-stage plant Two-stage plant
  • 62. 62 | Danfoss Automatic Controls CEP Classified as Business Magnetic coupling Actuator type ICAD Function module Top cover Valve body ICM Quick start guide ICM 100 - 150 Installation guide Motor valve - type ICM and actuator type ICAD Single-stage plant Two-stage plant ICM - ICAD Data sheet ICM - detail ICAD Instruction i i Magnetic coupling i ICM 20 - 65 Installation i ICM 100-150 i Plate freezer Cold store 1 Cold store 2 ICAD Quick guide i
  • 63. 63 | Danfoss Automatic Controls CEP Classified as Business Magnetic coupling - External (ICAD) Magnetic coupling - Internal Actuator Function module Motor valve and actuator magnetic coupling system - principle ICAD Instruction ICM Quick start guide i i i ICM 20 - 65 Installation i Two-stage plant i ICAD Quick guide i ICM - detail ICM - ICAD ICM 100-150 Animation Plate freezer Cold store 1 Cold store 2 Single-stage plant ICM 100-150 Installation ICM - ICAD Data sheet
  • 64. 64 | Danfoss Automatic Controls CEP Classified as Business Magnetic coupling (internal) O-ring O-ring Gasket Piston Spindle Top housing Top cover Label Valve seat Valve plate Valve body Function module Throttle cone Motor valve - type ICM ICAD Instruction ICM Quick start guide i i i ICM 20 - 65 Installation i Two-stage plant i ICAD Quick guide i ICM - ICAD Magnetic coupling ICM 100-150 Animation Plate freezer Cold store 1 Cold store 2 Single-stage plant ICM 100-150 Installation ICM - ICAD Data sheet
  • 65. 65 | Danfoss Automatic Controls CEP Classified as Business ICEDRAW.DK ICEDRAW.DK - Two step Solenoid valve – type ICLX - Principle Plate freezer Cold store 1 ICF 65 - 3 - 41 Single-stage plant Two-stage plant Cold store 2 ICLX Animation ICLX Data sheet i ICLX 32-65 Installation i ICLX 100-150 Installation i ICLX Function
  • 66. 66 | Danfoss Automatic Controls CEP Classified as Business Two step Solenoid valve – type ICLX - Function No flow Full flow Bleed flow External pressure Inlet pressure Outlet pressure ICLX Animation Plate freezer Cold store 1 ICF 65 - 3 - 41 ICLX Data sheet i ICLX 32-65 Installation i Single-stage plant Two-stage plant Cold store 2 ICLX 100-150 Installation i ICLX Principle External pressure > Inlet pressure + 2bar In the opening moment Inlet pressure < Outlet pressure + 1,25bar
  • 67. 67 | Danfoss Automatic Controls CEP Classified as Business Coil Armature Diaphragm Manual opener Cabel connection Valve body Solenoid valve – type EVRS 20 Data sheet i Animation Installation guide i Single-stage plant Two-stage plant Plate freezer Pilot orifice
  • 68. 68 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Bonnet, flange Cone, Cone seal Balls O-ring Identification ring Bolts Gasket Fiber, Non-asbestos Packing washer - Aluminium Disc spring Housing Bonnet, insert Spring loaded Teflon ring Stop valve – type SVA 15–20 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 69. 69 | Danfoss Automatic Controls CEP Classified as Business Cap Packing gland Bonnet, flange Identification ring Bolts Housing Bonnet, insert Spindle Cone, Cone seal Balls O-ring Gasket Fiber, Non-asbestos Packing washer - Aluminium Disc spring Spring loaded Teflon ring O-ring Stop valve – type SVA-S 25–40 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 70. 70 | Danfoss Automatic Controls CEP Classified as Business Housing Cap Packing gland Bonnet, flange Bolts O-ring Gasket for cap Identification ring Bonnet, insert Cone and Cone seal Spindle Packing washer - Aluminium Spring loaded Teflon ring O-ring Disk spring Gasket - Fibre, non asbestos Straightway stop valve – type SVA-S 25-40 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 71. 71 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Bonnet Soft back seat Balls O-ring Cone, Cone seal Gasket - non asbestos Housing Disc spring O-ring Grease Spring loaded Teflon ring Packing washer - Aluninium Stop valve – type SVA-S 50–65 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer
  • 72. 72 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Valve bonnet Cone, Cone seal O-ring Balls Gasket - non asbestos Housing Disc spring Grease Spring loaded Teflon ring Packing washer - Aluninium O-ring Bolts Straightway stop valve – type SVA-S 50-65 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 73. 73 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Valve bonnet Cone, Cone seal Balls Soft back seat O-ring Identification ring Bolts Gasket Disc spring Grease Packing washer - Aluninium Spring loaded Teflon ring O-ring Stop valve – type SVA-S 80-150 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 74. 74 | Danfoss Automatic Controls CEP Classified as Business Cap Spindle Packing gland Valve bonnet Back seat Cone, Cone seal Balls O-ring Identification ring Gasket Grease Disc spring O-ring Gasket Spring loaded Teflon ring Packing washer - Aluninium Straightway stop valve – type SVA 80-150 Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Installation guide i i Data sheet Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer
  • 75. 75 | Danfoss Automatic Controls CEP Classified as Business Spindle Housing Seal cap Gasket f. seal cap Packing gland Identification ring Bonnet, Flange O-ring Disk spring Gasket - non asbestos Cone Bonnet, Insert Packing washer - Aluminium Spring loaded Teflon ring O-ring O-ring Regulating valve – type REG-SA and REG-SB 15-40 Data sheet i i Installation guide Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 76. 76 | Danfoss Automatic Controls CEP Classified as Business Housing Seal cap Packing gland Bonnet, Flange Gasket - non asbestos Spring loaded Teflon ring Spindle Identification ring Cone Bonnet, Insert Packing washer - Aluminium O-ring O-ring Disk spring O-ring Regulating valve – type REG-SA and REG-SB 15-40 Data sheet i i Installation guide Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Single-stage plant Two-stage plant Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 77. 77 | Danfoss Automatic Controls CEP Classified as Business Spindle seal cap and gasket Gasket Fiber, non asbestos Cylinder with seat Bolts O-ring Housing Guide sleeve Spring ring Spring Teflon ring Marking label Spring loaded Teflon ring Valve bonnet Packing washer - Aluminium O-ring Packing gland Valve plate Stop check valve type SCA-X 50-125 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer
  • 78. 78 | Danfoss Automatic Controls CEP Classified as Business Identification ring O-ring Housing Cone Spring Gasket Bonnet, Insert Bonnet, Flange Bolts Valve seat Check valve type CHV 15-40 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 79. 79 | Danfoss Automatic Controls CEP Classified as Business End cover Gasket Bolts Valve plate O-ring Housing Guide sleeve Spring ring Spring Teflon ring Marking label Cylinder with seat Check valve – type CHV-X 50-125 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer
  • 80. 80 | Danfoss Automatic Controls CEP Classified as Business Housing Gasket Cover Bolts Marking label Filter element Pressure relief (screw) Packing washer Filter – type FIA 15-40 Installation guide Single-stage plant Two-stage plant Data sheet i i Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer Screw compressor
  • 81. 81 | Danfoss Automatic Controls CEP Classified as Business Housing Gasket Cover Bolts - Stainless steel Marking label - Aluminium Filter element Pressure relief (screw) Packing washer - Aluminium Filter – type FIA 50-200 Data sheet i i Installation guide Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer
  • 82. 82 | Danfoss Automatic Controls CEP Classified as Business Spindle seal cap Gland nut (Steel) Sealing ring (Teflon) Spindle Valve seat Seal cap gasket Locking ring (Steel) Stop needle valve – type SNV Data sheet i Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Intermediate cooler Water rectifier Pump separator Two-stage Pump separator Single-stage Economizer Screw Compressor
  • 83. 83 | Danfoss Automatic Controls CEP Classified as Business Valve seat Spring Marking label Valve spindle Valve top Valve housing Valve cone Retainer Valve cone seal Steel ball Double stop valve - type DSV1 Safety relief valve, type SFA 15 and double stop valve, type DSV1 DSV 1+2 Data sheet SFA 15 Data sheet i i DSV 1+2 Installation guide i SFA 15 Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer
  • 84. 84 | Danfoss Automatic Controls CEP Classified as Business Housing Valve seat Spring Valve cone Valve spindle Valve top Plug Marking label Double stop valve assembly Safety relief valve, type SFV and double stop valve, type DSV2 SFV 20 - 25 Data sheet i SFV 20 - 25 Installation guide i DSV 1+2 Data sheet i DSV 1+2 Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer Intermediate cooler
  • 85. 85 | Danfoss Automatic Controls CEP Classified as Business Valve seat Spring Threaded plug Valve spindle Valve top Valve housing Valve cone ID label Bellow O-rings Gasket -Aluminium Bleed hole Gasket -Aluminium Safety relief valve – type BSV 8 Data sheet i Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer BSV & POV
  • 86. 86 | Danfoss Automatic Controls CEP Classified as Business Pilot operated internal safety valve – type POV - principle BSV – back pressure independent safety valve POV – pilot operated safety valve Compressor POV Data sheet BSV i i POV Installation guide BSV Data sheet i BSV Installation guide i Single-stage plant Two-stage plant Screw compressor Suction Discharge
  • 87. 87 | Danfoss Automatic Controls CEP Classified as Business Cylinder Gasket Bonnet Glyde ring and O-ring Spring Cone rod O-ring Bushing for spring Screw for spring Valve house Connection to compressor - suction side Teflon ring Cone Piston Spring Piston rod O-ring Multifunctional compressor valve – type KDC KDC-function Data sheet Instructions i i Single-stage plant Two-stage plant Screw compressor
  • 88. 88 | Danfoss Automatic Controls CEP Classified as Business Connection to compressor suction side Step 1 Step 2 Step 3 The KDC valve is force-controlled so that when pressure in the oil separator becomes 2 bar (29 psi) higher than the suction pressure, the spring is compressed and the valve opens. In low pressure units (boosters), the spring requires a differential pressure of 0.5 bar (7 psi) for the valve to open. Multifunctional compressor valve – type KDC KDC - detailed Data sheet Instructions i i Single-stage plant Two-stage plant Screw compressor
  • 89. 89 | Danfoss Automatic Controls CEP Classified as Business Spindle Bonnet Spring Housing O-ring Cone Quick closing oil drain valve – type QDV 15 Data sheet i Installation guide i Single-stage plant Two-stage plant Cold store 1 Cold store 2 Plate freezer Pump separator Two-stage Pump separator Single-stage Economizer Intermediate cooler
  • 90. 90 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type EVM ICS 3 with CVP+EVM Single-stage plant Two-stage plant Pilot valves Data sheet i ICS 1 CVC+EVM i Pilot valves Installation ICLX ICS3 CVPP+EVM ICS1 EVM EVM – NC Shown with flow i.e. coil is energized EVM – NO Shown with flow i.e. coil is de-energized
  • 91. 91 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type CVP-L ICS 3 with CVP-L+ EVM Single-stage plant Two-stage plant Pilot valves Data sheet i ICS 1 with CVP i Pilot valves Installation
  • 92. 92 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type CVPP-L ICS3-CVPP-L Pilot valves Data sheet i i Pilot valves Installation Single-stage plant Two-stage plant
  • 93. 93 | Danfoss Automatic Controls CEP Classified as Business Pilot Valve - type CVC-L ICS3 CVC-EVM Single-stage plant Two-stage plant Pilot valves Data sheet i i Pilot valves Installation Pilot flow
  • 94. 94 | Danfoss Automatic Controls CEP Classified as Business B S External RESET button Internal RESET button S = Pressure control with internal reset B = Pressure control with external reset Pressure switch KP 7ABS / KP 7BS Protection against high discharge pressure. KP Pressure Data sheet i i KP 7ABS / 7BS Installation guide Single-stage plant Two-stage plant Screw compressor Reciprocating ICECO 400 Reciprocating ICECO 600 Pressure setting spindle Regulating range 8 – 32 bar Fixed differential pressure = 4 bar TESTING S side Tilt the main arm (3). At the same time operate the internal RESET button (25). B side Tilt the arm (19) with e.g. a screwdriver. At the same time operate the external RESET button (30). Be careful not to damage the bellows with the screwdriver! Pressure setting spindle 3 19