The document describes a GlobeCore CMM-2.2 transformer oil purification plant that can purify 2,200 liters of oil per hour. It removes solids and purifies oil of water and gases using vacuum and heat. The portable unit features components like filters, pumps, a heater, and a control panel to clean insulation and lubrication oils used in electric equipment. It can filter and heat oil, perform thermo-vacuum drying, or evacuate air from other equipment under vacuum.

1. Globecore GmbH
Edewechter Landstraße 173
Oldenburg-Eversten
Deutschland, 26131
Tel: +49 4484 202 35 91
Email: chyk@globecore.de
www.oilregeneration.globecore.com Skype: mg2globecore_de
GLOBECORE TRANSFORMER OIL PURIFICATION PLANT
CMM-2.2 (2200 l/h)
Transformer oil purification plant CMM-2,2 is designed for removal of
solids and thermo-vacuum purification from water and gases of lubricant and
electric insulation oil with viscosity of no more than 70 cSt at 50C.
The unit may be used for heating of oil filled electric equipment with hot
transformer oil, vacuum drying of transformers and evacuation or
transformers. The unit is designed for installation, repair and operation
organizations which process transformer oil.
The unit is not designed for operation in explosion hazard areas, as well as
in toxic or chemically aggressive environments.
When using the unit indoors, ensure safe exhaust of gases into the
atmosphere by pipelines.
Transformer oil purification plant CMM-2,2 (2200 l/h)

2. Technical specifications
Transformer oil purification plant CMM-2,2 (2200 l/h)
Note - * with initial oil parameters:
- gas content by volume – below 10.5%
- moisture mass content – below 0.005% (50 g/tonn)
- temperature – above 0ºC.
The unit is a container with all components and assemblies inside. The side
walls of the container feature hatches for access and servicing.
The unit consists of the following components: vacuum chamber 1, input
pump 2, heater 5, output pump 3, fine and coarse filter cartridges 6, control
cabinet 8, pipelines and valves. Process parameters are managed by Mitsubishi
α2 controller base on: TCM type temperature sensor, ТС-2 thermostat, flow
relay, Suco vacuum relay, ЕС 3016 РРАSL level sensors, VP02E foaming
sensor, М1, М2, М3 manometers for visual control of pressure on filters and
vacuum meter VM for control of vacuum in the vacuum chamber.
Parameter Value
1 Minimum capacity, l/h
- thermo-vacuum drying and filtration mode 2200
- filtration and heating mode 2200
2* Processed oil parameters:
- total max has content, % 1,5
- max moisture content, g/ton 10
3 Max oil temperature at unit output, ºC 85
4 Output pressure, MPa 0.2
5 Oil heater max power, kW 53
6 Max power consumption, kW 60
7 Electric power supply
- voltage, V 400
- frequency, Hz 50
8 Dimensions, mm
- length 1530
- width 1010
- height 1910
9. Max weight, kg 720

3. 1 – vacuum chamber; 2 – input pump; 3 – output pump;
4 – pipelines; 5 – oil heater; 6 – fine filter;
7 – vacuum pump СР 30-620; 8 – control panel
Mesh filter
A mesh filter at the unit’s inlet removes solid particles
from the oil. Fineness of filtration is defined by the
200 micron brass mesh secured in the filter’s case. To
rinse the filter element, remove it from the inlet and
rinse in clean transformer oil.
Oil pumps
The pumps Calpeda type NM 2
and 3 input and output oil to and
from the unit respectively. The
pumps are controlled from the
control panel.

4. Fine and coarse cartridge filters
Fine and coarse cartridge filters remove solids from processed oil. Filtration
fineness are 5 and 25 micron respectively.
1 – oil inlet;
2 – filtered oil outlet;
3 – contaminant drain
valve;
4 – filtering element;
5 – air release valve;
6 – magnets;
7 – hold down screw
The device consists of lid and frame, which supports FE-16, FE-28 type
filtering element. The lid is equipped with a valve which allows to release air
from the filter when it is filled with oil and to let air in when the oil is drained
form the filter. Oil inlet and outlet are welded to the case. The replace filtering
elements (cartridges), drain contaminants from the filter by opening the valve
3. Turn the handle 7 of the pressing screw several turns counter-clockwise,
turn the lid’s stock in the same direction against stop, then remove the lid from
the filter, unscrew the hold down nut and remove filtering element. Install the
new cartridge, secure it with the hold down nut. Install the lid back on to the
filter by repeating the steps above in reverse order.
Oil heater
The heater is a vessel with a total of 53 kW heating element. The heater
is equipped with input and output lines and a drain valve. Refer to Figure 4.4
for general view of the heater. The heater is controlled from the control panel.
Oil temperature is controlled by the temperature controller, which receives
signals from thermistor TP, and thermostat TS (see Fig. 4.7)
An interlock flow relay prevents heater operation with no oil flow to protect the
heater from damage.

5. 1 – heating section;
2 – cold oil inlet;
3 – hot oil outle;
Vacuum chamber
The vacuum chamber 1 is designed for thermal vacuum drying of
transformer oil. Ball valve K3 is attached to the column for connection to the
vacuum system, as well as vacuum meter VM, level sensors L1 – L2, a visual
oil level control indicator and foam sensor OS. The oil enters the column
through the inlet, then flows to the activator filter and the outlet.
The design of the sprayer facilitates intensive emission of gas and water from
the oil during processing.
1 – inlet;
2 – vacuum system connection;
3 – activator filter (sprayer);
4 – processed oil outlet;
5 – level sensors;
6 – sight glass
7 – visual level indicator

6. Vacuum pump
The vacuum pump VP is installed to create the necessary vacuum in the
system. The vacuum pump is connected to the vacuum chamber CV by
pipelines.
Vacuum pump type СР 30-620
Vacuum trap
Vacuum trap R is designed to prevent oil from entering the vacuum
system. It has a ball valve (K14) for oil drain.
Control cabinet
The control cabinet contains electric components required for unit
operation. The cabinet features lockable doors. The panel inside contains
control and communication circuits. The cabinet is equipped with control
buttons and lights.

7. Pos Name/Purpose
Designation in the
electric diagram
1 Controller Mitsubishi α2 U4
2 Heating mode select button S6
3 Operation mode select button S7
4 P1 pump start/stop button S2
5 P2 pump start/stop button S3
6 VP vacuum pump start/stop button S4
7
Sound signal acknowledge and alarm
reset button S5
8 Emergency stop button S1
9 Correct connection indication LD4
10
Power supply indication
LD3
Instruments
The unit is controlled by the Mitsubishi α2 controller with the help of the
following instruments:
- contamination of filtering elements in cartridge filters
F1, F2 and unit output pressure can be monitored on
manometers М1-М3;
- vacuum is controlled by vacuum meter VM and vacuum
relay.

8. - oil level control in the vacuum column is controlled by level
sensors and foam sensor.
Oil heater is controlled by the following systems:
- thermostat disengages oil heater when oil temperature
exceeds preset maximum;
- the flow relay disengages oil heater when no oil is flowing
through the heater;
- temperature controller manages processed oil temperature at the
output of the heater.

9. Flow diagram
СV – vacuum chamber; P1 – P2 – pumps; K1 ÷ K16 – ball valves; SV1 ÷ SV3 –
electromagnetic valves; MN – oil heater; ВV1 ÷ ВV4– check valve;
F1, F2 – cartridge filters; М1, М2, М3– manometers; VМ – vacuum meter;
РП – flow relay, ТP – temperature controller sensor; TS – thermostat;
L1 ÷ L2– level sensors; OS – foam sensor; VP – vacuum pump;
РF – mesh filter; RV – vacuum relay; FV – moisture separator; R – trap;
CL1 – oil inlet; CL2 – oil outlet.
The unit can be used in the following modes:
 “Heating and filtration” (H&F);
 “Thermovacuum oil drying” (Dry);
 “Vacuum evacuation of equipment” (Vac);
In the heating and filtration mode the pump P1 pumps the oil through
the input valve К1 and pre-filter PF, check valve ВV1, heater MN, filter F1,
electric valve SV2, check valve ВV3, valve К2 and to the outlet of the unit.
In this mode the oil is filtered and heated.
In this mode of operation, the heater and the input pump P1 are
controllable. Output pump P2 controls are locked out.
The transformer oil is degassed by application of vacuum and heat.
In this mode the pump P1 pumps the oil from the unit’s inlet to valve K1, pre-
filter PF, check valve BV1, oil heater MN, filter F1, electric valve SV1 to the
vacuum chamber CV. Hot oil (50…60ºС) free from solids passes in the
chamber through activator filter (sprayer). The vacuum in the chamber is

10. maintained by vacuum pump VP. Vacuum is adjusted by valve K7 and is
controlled by vacuum meter VM.
The moist air then passes through valve K3 and the trap and is exhausted to
the atmosphere by the vacuum pump VP.
The oil from the chamber is pumped by the pump P2 through cartridge filter
F2, check valve BV2 and ball valve K2 to the unit’s outlet. The vacuum in the
chamber is maintained by the vacuum pump VP at -0.8 bar.
When the oil passes through the chamber, vacuum extracts moisture and air
dissolved in the oil.
In this mode, oil is filtered, dried and degassed.
A warm up and adjustment mode is facilitated to prevent bad quality oil output
in the initial moments of operation. In the adjustment mode, the vacuum
chamber is filled with oil, after which the unit is warmed up, the oil circulating
through:
- vacuum chamber СV;
- oil pump P2;
- cartridge filter F2, check valve ВV2;
- ball valve K4 and check valve ВV4, valve K2 closed;
- oil heater MN;
- cartridge filter F1 and electric valve SV1;
During circulation, the output pump may stop when oil level drops
below the lower level sensor To avoid that, fill the chamber with oil to
the level above the lower level sensor.
In this mode, all actuators can be controlled.
Vacuum equipment evacuation» mode (Vac).
In this mode the unit evacuates air from third party equipment with the
vacuum pump VP.
In this mode, the VP pump may be controlled. Pumps P1, P2 and the
oil heater are locked out.