This document provides information about a two post vehicle lift, including: - Standard features such as a lifting capacity of 3000kg and raising/lowering time of 42 seconds. - Optional accessories such as extenders, adapters, and safety devices. - Installation requirements including foundation, power supply, and location considerations. - Operating instructions covering pre-lift checks, vehicle positioning, and control functions. - Safety information and features to prevent unauthorized use and protect operators. - Maintenance procedures performed by the operator such as greasing and belt checks.

1. D1 3619BA1-GB06
Two Post Lift
ECON II 3.0
for vehicles up to 3,000 kg gross weight
ECON II 3.5
for vehicles up to 3,500 kg gross weight
Operation Manual
English

2. ECON II 3.0 / ECON II 3.5
II D1 3619BA1-GB06
EDITION
6th edition 2004-05-17
D1 3619BA1-GB06
Software version V1.12
© MAHA GMBH & CO. KG
All rights reserved. Any reproductions of this document, partial or complete, are only allowed
with prior consent of MAHA GmbH & Co. KG.
All rights reserved in cases of patent granting or registration of design.
The contents of this edition have been checked with great care. However, errors cannot be fully
excluded. Please contact MAHA should you find errors of any kind.
These instructions are intended for users with previous knowledge in the field of automotive
vehicle service lifts.
Subject to technical change without notice.
MANUFACTURER
MAHA Maschinenbau Haldenwang GmbH & Co. KG
Hoyen 20
D-87490 Haldenwang/Allgäu
Telephone: 08374 / 585-0
Telefax: 08374 / 585-499
Internet: http://www.maha.de
e-mail: maha@maha.de
SERVICE
MAHA Maschinenbau Haldenwang GmbH & Co. KG
- Service Dept. -
Hoyen 20
D-87490 Haldenwang/Allgäu
Hotline: 08374 / 585 + extension
260 for brake testers, test lanes
280 for automotive lifts
290 for performance testers, exhaust and air conditioning service equipment
Service: 08374 / 585-110 to -113, -115
Telefax: 08374 / 585-491

3. ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 III
CONTENTS
1 Description ................................................................................................................ 1
1.1 Standard Delivery.......................................................................................................................... 1
1.2 Options / Accessories.................................................................................................................... 1
1.3 Noise Emission.............................................................................................................................. 1
1.4 Specifications ................................................................................................................................ 2
1.5 Installation Requirements.............................................................................................................. 4
1.5.1 Location.......................................................................................................................... 4
1.5.2 Foundation ..................................................................................................................... 4
1.5.3 Power/Air Supply............................................................................................................ 4
2 Safety......................................................................................................................... 5
2.1 Safety Instructions for Commissioning.......................................................................................... 5
2.2 Safety Instructions for Operation................................................................................................... 5
2.3 Safety Instructions for Servicing.................................................................................................... 6
2.4 Further Information........................................................................................................................ 6
2.5 Safety Features ............................................................................................................................. 6
2.5.1 Dead Man’s Type Control .............................................................................................. 6
2.5.2 Electronic Synchronization System................................................................................ 6
2.5.3 Catch Nut ....................................................................................................................... 6
2.5.4 Electronic Load Nut Monitoring...................................................................................... 6
2.5.5 Load Nut Wear Check.................................................................................................... 6
2.5.6 Overload Protection of Motors ....................................................................................... 6
2.5.7 Driving Belt Failure Protection ....................................................................................... 6
2.5.8 Pinch Point Protection.................................................................................................... 6
2.5.9 Automatic Arm Restraint ................................................................................................ 6
3 Operation................................................................................................................... 7
3.1 Defects / Malfunctions ................................................................................................................... 7
3.2 Controls ......................................................................................................................................... 8
3.2.1 Control Box .................................................................................................................... 8
3.2.2 Arm Restraint ............................................................................................................... 10
3.3 Preparations ................................................................................................................................ 10
3.3.1 Extenders ..................................................................................................................... 11
3.3.2 Parallelogram-Type Adapters ...................................................................................... 12
3.3.3 Height Preselection...................................................................................................... 13
3.4 Raising......................................................................................................................................... 13
3.5 Lowering ...................................................................................................................................... 14
3.6 Protection against Unauthorized Usage...................................................................................... 14
3.7 Behavior of Lift Control................................................................................................................ 15
3.7.1 Load Nut Failure........................................................................................................... 15
3.7.2 Arms Contacting the Floor ........................................................................................... 15
3.7.3 Arms Contacting an Obstacle during Lowering Cycles................................................ 15
3.7.4 Overload / Belt Slip ...................................................................................................... 15
3.7.5 Level Difference between Carriages............................................................................ 15
3.8 Manual Lowering ......................................................................................................................... 16
3.9 Securing the Vehicle.................................................................................................................... 17
3.9.1 Safety Adapters for Mercedes-Benz Cars ................................................................... 17
3.9.2 Safety System for Mercedes-Benz A-Class Cars ........................................................ 19

4. ECON II 3.0 / ECON II 3.5
IV D1 3619BA1-GB06
4 Maintenance ............................................................................................................ 21
4.1 Annual Inspection........................................................................................................................ 21
4.2 Maintenance by the Operator...................................................................................................... 21
4.2.1 Load Nut Wear Check.................................................................................................. 22
4.2.2 Greasing Points............................................................................................................ 22
4.2.3 Rubber Pads ................................................................................................................ 24
4.2.4 Brake Check................................................................................................................. 25
4.2.5 Drive Belts.................................................................................................................... 25
4.3 Cleaning....................................................................................................................................... 27
4.4 Troubleshooting........................................................................................................................... 27

5. ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 1
1 Description
1.1 Standard Delivery
! 2 columns including control box
! 2 long swing arms; 2 short swing arms
! Operation manual
1.2 Options / Accessories
! Additional control box for slave column
! Additional control box for slave column incl. power supply set 230V/compressed air
! Double telescopic, short swing arms
! Extenders 50 mm, 100 mm, 150 mm or 200 mm
! Swing arms with parallelogram-type extenders
! Wheel nut trays for extenders
! Safety extender for VW T4, also suitable for other models
! Fastening straps
! Safety adapter for MB cars and V-class
! Fastening device for MB A-class
! Special prism adapter for MB models 463, 460 and 100
! Wheel nut trays on swing arm and column
! Holding device for impact wrench and 6 wrench sockets
! Power disconnect including CEE 32 A plug and 2.5 m power supply cable
! Power supply block on column including receptacles 1 x 400 V and 2 x 230 V;
2 x compressed-air connection
For further options and accessories please see our current price list.
1.3 Noise Emission
The sound pressure level is lower than 70 dB(A) in the range of the operator.

6. ECON II 3.0 / ECON II 3.5 Description
2 D1 3619BA1-GB06
1.4 Specifications

7. Description ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 3
ECON II 3.0 ECON II 3.5
Load capacity 3000 kg 3500 kg
Raising / Lowering time 42 s (MB: 35 s)
Height overall HG 4600 mm 4850 mm
Floor to overhead guide HL 4560 mm 4810 mm
Column height HS 2916 mm 3170 mm
Full travel HW 1880 mm
Lifting rise max. HO 1990 mm
Lifting rise min. HU 85 mm 105 mm
Disk adjustment range HT 85...110 mm
Reach short arm LK 535...840 mm ―
Reach short arm, telescopic, LT 560...1180 mm 590...1181 mm
Reach short arm LL 945...1505 mm 927...1510 mm
Inside columns BL 2535 mm
Outside columns BA 3012 mm
Baseplate projection BP 44 mm
Outside baseplates BG 3100 mm
Drive-thru clearance BH 2350 mm
Dead weight 550 kg
Anchoring 10 heavy-duty anchors UPAT UKA 3 EAP M16
Power supply 3~ 400 V, 50 Hz
Motor power 2 x 2.2 kW
Fuse 16 A time-delay
Rated current 14 A
Specifications are subject to change without notice.

8. ECON II 3.0 / ECON II 3.5 Description
4 D1 3619BA1-GB06
1.5 Installation Requirements
Lift installation by qualified service personnel only.
Provision of handling means such as forklifts etc. is the owner's responsibility.
1.5.1 Location
Do not use the standard lift in the vicinity of explosives or open containers of flammable liquids.
An appropriate splash protection is necessary for superstructure and electrical equipment of lifts
installed in a carwash or other moist rooms.
Choice of a suitable lift location is the owner's responsibility.
1.5.2 Foundation
Prior to installation a sufficiently stable foundation and level lift bay floor shall be completed in
accordance with MAHA recommendations. Minimum concrete thickness: 175 mm reinforced.
Always use the latest foundation plans available from MAHA.
Proof of safe floor load capacity is the owner's responsibility.
1.5.3 Power/Air Supply
1.5.3.1 Three Phase Motor
3~ + N + PE 400 V, 50 Hz. Select a wire size appropriate for lift model and cable length.
Motor power in kW Time-delay fuse in A Rated current in A
ECON II 3.0 2 x 2.2 16 14
ECON II 3.5 2 x 2.2 16 14
1.5.3.2 Compressed Air
Select an appropriate air hose diameter.

9. ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 5
2 Safety
Thoroughly read the operation manual before operating the lift and comply with the instructions.
Always display the manual in a conspicuous location.
Personal injury and property damage incurred due to non-compliance with these instructions
are not covered by the product liability regulations.
Failure to comply with instructions could result in personal injury.
Failure to comply with instructions could result in property damage.
Important information.
Carefully observe all safety instructions. They are provided to warn of dangers and help prevent
personal injury and property damage.
Carefully observe all national and international health and safety regulations. It is the operator’s
responsibility to comply with all safety instructions pertaining to his work station and to bring
them up to date continually.
2.1 Safety Instructions for Commissioning
! The lift may only be commissioned by authorized service personnel.
! The standard lift version may not be installed in hazardous locations or in the vicinity of
flammable liquids. Lifts with explosion protection are available on request.
2.2 Safety Instructions for Operation
! Lift operation by trained personnel over 18 years only.
! Always keep the lift and lift area clean and free of tools, parts, debris etc.
! Once the disk adapters contact the lift points, check arm restraints for engagement.
! After raising the vehicle briefly, stop and check the disk adapters for secure contact.
! Closely watch the vehicle and the lift during raising and lowering cycles.
! Make sure the vehicle doors are closed during raising and lowering cycles.
! Do not allow anyone to stay in lift area during raising and lowering cycles.
! Do not allow anyone on lift or inside raised vehicle.
! Only use the lift for its intended purpose.
! Do not overload the lift. The rated load capacity is indicated on the lift nameplate.
! Only use the vehicle manufacturer’s recommended lift points.
! After positioning the vehicle apply the parking brake.
! The main switch serves as emergency switch. In case of emergency turn to position 0.
! Protect all parts of the electrical equipment from humidity and moisture.
! Protect the lift against unauthorized usage by padlocking the main switch.
! Provide adequate ventilation when working on operating internal combustion engines.

10. ECON II 3.0 / ECON II 3.5 Safety
6 D1 3619BA1-GB06
2.3 Safety Instructions for Servicing
! Service work such as maintenance or repair by MAHA or authorized service personnel only.
! Turn off and padlock the main switch before doing any repair, maintenance, or setup work.
! Work on pulse generators or proximity switches by trained service personnel only.
! Work on the electrical equipment by certified electricians only.
! Ensure that ecologically harmful substances are disposed of only in accordance with the
appropiate regulations.
2.4 Further Information
! For rooms with low ceilings the installation of a light barrier travel stop is recommended.
! The use of high pressure or steam jet cleaners could result in equipment damage.
! The use of cleaning agents which attack coatings or sealing materials could result in
equipment damage.
2.5 Safety Features
2.5.1 Dead Man’s Type Control
The operator is required to hold the main switch in the engaged position to raise or lower the lift.
2.5.2 Electronic Synchronization System
The synchronization system ensures level movement of both carriages.
2.5.3 Catch Nut
After load nut failure the catch nut takes up the load and thus ensures safe lowering of lift.
2.5.4 Electronic Load Nut Monitoring
After load nut failure the lift can only be lowered.
2.5.5 Load Nut Wear Check
The load nut can be visually checked for wear to have it replaced in time.
2.5.6 Overload Protection of Motors
The motors are equipped with overload protection.
2.5.7 Driving Belt Failure Protection
In case of driving belt failure motors will switch off immediately.
2.5.8 Pinch Point Protection
The swing arms are equipped with guard bows acting as pinch point protection.
2.5.9 Automatic Arm Restraint
The arm restraints are locked automatically once the lift is raised.

11. ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 7
3 Operation
Lift operation by trained personnel over 18 years only.
Apply the parking brake after positioning the vehicle on the lift.
Do not allow anyone to stay in lift area during raising and lowering cycles.
Closely watch the vehicle and the lift during raising and lowering cycles.
Make sure the vehicle doors are closed during raising and lowering cycles.
Observe the rated load capacity.
Do not allow anyone to climb on lift or stay inside vehicle.
After raising the vehicle briefly, stop and check adapters for secure contact at vehicle
manufacturer's recommended lift points.
Once the disk adapters contact the lift points, check arm restraints for engagement.
3.1 Defects / Malfunctions
In case of defects or malfunctions such as jerky lift movement or deformation of the
superstructure, support or lower the lift immediately.
Turn off and padlock the main switch. Contact qualified service personnel.

12. ECON II 3.0 / ECON II 3.5 Operation
8 D1 3619BA1-GB06
3.2 Controls
3.2.1 Control Box
A: Main Switch
Raising / lowering function.
An additional main switch for the second
column is optionally available.
B: Height Preselection
The lifting height can be preselected for more
operating convenience.
C: LED Unit
Indication of operating state or errors.

13. Operation ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 9
3.2.1.1 Main Switch
! To raise the lift turn and hold the switch to the right side.
! To lower the lift turn and hold the switch to the left side.
! Release the switch to disconnect the lift (Position 0).
In this position the main switch can be padlocked to protect it
against unauthorized usage.
The main switch serves as emergency switch. In case of emergency turn it to position 0.
3.2.1.2 Height Preselection
! The lift movement stops once the preselected height is
reached.
3.2.1.3 LED Unit
Color Operating State / Error
Red Load nut failure.
Yellow
Unlevel movement of carriages:
– Synchronization being performed.
Error:
– Belt failure.
– Belt slip.
– Carriage contacting obstacle.
Green Normal operation – No error.
In case of load nut failure shut down the lift and padlock the main switch until the load
nut has been replaced.

14. ECON II 3.0 / ECON II 3.5 Operation
10 D1 3619BA1-GB06
3.2.2 Arm Restraint
Never unlatch arm restraint when lift is under load.
! Arm restraint unlatches automatically
when lift is in bottom position.
! Pull gear block pin to disengage
restraint when arms are in a raised
position.
Release the pin to lock the swing
arms again.
3.3 Preparations
! Fully lower the lift and swing the
arms to full drive-thru position as
shown opposite.
↑
Approach
! Slowly position vehicle midway between adapters. Make sure approximate center of gravity
is on center line of lift. Apply the parking brake.
! Swing and telescope arms as required to position adapters under vehicle manufacturer's
recommended lift points.

15. Operation ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 11
Allow a minimum distance of 700 mm between adapters.
! The disk adapters are height-adjustable. Make sure they
evenly engage the vehicle frame.
Always use all four swing arms to engage the vehicle frame. Never load single adapters
individually.
! Leave vehicle and remain clear of lift.
3.3.1 Extenders
Use ONE extender only for each disk adapter.
! The disk adapters can be raised in increments of 50 mm by
means of extenders. For fine adjustment turn the disk adapters
as required.
! The extenders are optionally available in heights of 50, 100,
150 and 200 mm.

16. ECON II 3.0 / ECON II 3.5 Operation
12 D1 3619BA1-GB06
Make sure the spring dowel sleeves lock into place.
3.3.2 Parallelogram-Type Adapters
To retrofit the lift with parallelogram-type adapters the swing arms must be completely replaced.
! The disk adapters can be quickly and easily
raised or lowered by means of the
parallelogram adapters. Adjustment range:
95…270 mm.
For fine adjustment turn the disk adapters
as required.
A Lifting rise min. 95 mm
B Adjustment range of parallelogramm-type adapters 210 mm
C Adjustment range of double telescopic disk adapter
Maximum height of extenders used in combination with parallelogram-type adapters is
100 mm.

17. Operation ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 13
3.3.3 Height Preselection
! Select the desired lifting height. Lift stops once preset height is
reached.
3.4 Raising
Closely watch the vehicle and the lift during raising or lowering cycles.
Do not allow anyone to stay in lift area.
Make sure the vehicle doors are closed during raising cycles.
Once the disk adapters contact the lift points, check arm restraints for engagement.
After raising the vehicle briefly, stop and check adapters for secure contact at vehicle
manufacturer's recommended lift points.
! To raise the lift turn and hold the switch to the right side.
! Lift stops once switch is released or upward travel limit is
reached.
Always use fastening straps when removing or installing heavy
components.
! Avoid rocking of vehicle.
! Keep lift free of tools, parts etc.

18. ECON II 3.0 / ECON II 3.5 Operation
14 D1 3619BA1-GB06
3.5 Lowering
Closely watch the vehicle and the lift during raising or lowering cycles.
Do not allow anyone to stay in lift area.
Make sure the vehicle doors are closed during lowering cycles.
! Remove tools, stands or other objects from lift bay.
! To lower the lift turn and hold the switch to the left side.
Lift stops once switch is released or upward travel limit is
reached.
Fully lower the lift before removing vehicle.
! Swing arms to full drive-thru position and remove vehicle.
3.6 Protection against Unauthorized Usage
! Use a padlock to protect the switch against unauthorized
usage.

19. Operation ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 15
3.7 Behavior of Lift Control
3.7.1 Load Nut Failure
In case of load nut failure the red LED on the control box lights up. The lift can only be lowered
to bottom position. The lift control will be disabled until the load nut has been replaced.
Padlock the main switch and contact MAHA for replacement.
3.7.2 Arms Contacting the Floor
Floor contact of the arms is recognized by the lift control. The lift stops and the yellow LED on
the control box lights up.
Once the main switch is used again the lift can only be raised.
Check belts for correct position and tension.
Contact MAHA for adjustment or replacement of the lower proximity switches.
3.7.3 Arms Contacting an Obstacle during Lowering Cycles
If a swing arm contacts an obstacle the lift movement is stopped and the yellow LED lights up.
Once the main switch is used again the lift can only be raised. Raise 10 cm minimum to release
the control.
Check belts for correct position and tension.
3.7.4 Overload / Belt Slip
Overload or belt slip is recognized by the lift control. The lift stops and the yellow LED lights up.
Once the main switch is used again the lift can only be lowered.
Check belts for correct tension and/or reduce load.
Observe the rated load capacity.
3.7.5 Level Difference between Carriages
Level differences between the carriages are equalized automatically by the lift control.
Once an error causes a level difference exceeding 10 cm, the lift stops, the yellow LED flashes
and the control is disabled.
The lift can be lowered manually.
Contact MAHA for inspection of the lift control.

20. ECON II 3.0 / ECON II 3.5 Operation
16 D1 3619BA1-GB06
3.8 Manual Lowering
Authorized personnel only!
Do not restart lift before elimination of trouble that made manual lowering necessary.
In case of defect or power failure the lift can be
lowered manually.
! Remove motor covers to make pulleys accessible.
! Using a wrench, lower both carriages in increments
of 20 mm by intermittently turning the lifting screws.
The lift may only be lowered, not raised.
After remedy of defect lower lift to bottom position. The lift control is reinitialized.

21. Operation ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 17
3.9 Securing the Vehicle
Always use fastening straps when removing or installing heavy components such as
engine, transmission or axles.
3.9.1 Safety Adapters for Mercedes-Benz Cars
Raise lift to a convenient height
(approx. midpoint of travel). Then
attach adapters to swing arms as
shown opposite.
Insert extensions into tube. The right front extension is marked VR, the left front extension
correspondingly VL. The rear extensions are identical and unmarked.
Then insert arbors into lateral recesses of car.

22. ECON II 3.0 / ECON II 3.5 Operation
18 D1 3619BA1-GB06
Insert extensions to STOP mark at least. Adjust tube if required.
Insert arbors (1) into lateral recesses of car and tighten knurled nuts (2).
Check safety adapters after each raising or lowering cycle.

23. Operation ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 19
3.9.2 Safety System for Mercedes-Benz A-Class Cars
This safety system is suitable only for Mercedes-Benz A-class passenger cars.
Installation:
! Remove the fixing lug (1) from the safety system and screw it into thread provided on
vehicle.
! Position rubber pads (2) on lift arms.
! Hook the turnbuckle (3) into the fixing lug (1) on the vehicle.
! Extend the safety system and fasten the clamping devices (4) to both lift arms.
! Tighten the fastening screw (5).
! Tighten both threaded spindles (6) finger tight.
! Adjust the slider (7) at right angles to the turnbuckle.
! Tighten the turnbuckle (3).
! Check the complete safety system for tightness.
Removal:
! Remove the safety system in reverse installation order.
! Be sure to remove the fixing lug from the vehicle and reinstall it to the safety system.

24. ECON II 3.0 / ECON II 3.5 Operation
20 D1 3619BA1-GB06

25. ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 21
4 Maintenance
Turn off the main switch before doing any maintenance, repair or setup work, and protect
it against unauthorized usage.
4.1 Annual Inspection
Have your lift inspected by qualified service personnel at least once annually.
4.2 Maintenance by the Operator
Establish a periodic preventive maintenance procedure to ensure troublefree operation and long
service life.
ECON II 3.0:
Fully lower the lift.
ECON II 3.5:
Raise the lift to approx.
midpoint of travel.
Then remove the plastic caps from both
column covers to make the greasing points
accessible and to check for load nut wear.
ECON II 3.5

26. ECON II 3.0 / ECON II 3.5 Maintenance
22 D1 3619BA1-GB06
4.2.1 Load Nut Wear Check
Once a year check the load nuts for wear.
If load nut wear has been found, shut down and lock the lift until the load nut has been
replaced.
! Remove the plastic caps from both column
covers.
! Raise or lower the lift until the lower
inspection window in the carriage lines up
with the window in the column cover.
! The check screw now becomes visible in the inspection
window.
A clearance of approx. 2 mm between check screw (1) and safety
nut (2) is preset at the factory.
If no clearance can be detected, have the load nut replaced prior
to further use.
! At completion of wear check reinstall the plastic caps.
4.2.2 Greasing Points
Use commercial multipurpose grease such as
! Aral / K2K-30
! Kuwait Petroleum / Rembrand EP-2
or similar products.

27. Maintenance ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 23
4.2.2.1 Load Nut
Once a year grease the load nuts using a grease gun.
! Remove the plastic caps from both column
covers.
! Raise or lower the lift until the lower
inspection window in the carriage lines up
with the window in the column cover.
! Fill the reservoir of each load nut with
approx. 20 ml multipurpose grease.
! Reinstall the plastic caps.
Grease every 6 months for severe use applications (more than 5 lifting cycles per day).
4.2.2.2 Slide Tracks
Grease the slide tracks inside the columns
once a year or more frequently if required
(noise, vibrations etc.).
! Open upper and lower fastening screws of
column cover (1). Remove cover.
! Slightly grease the slide tracks (2) using a
brush.
! Reinstall the covers to the columns.

28. ECON II 3.0 / ECON II 3.5 Maintenance
24 D1 3619BA1-GB06
4.2.2.3 Lifting Screw Bearing
Grease the upper lifting screw bearing once
annually using a grease gun.
The zerk fitting is located on the bottom side of
the motor baseplate.
4.2.2.4 Swing Arm Extensions
Periodically grease the swing arm extensions.
4.2.2.5 Threads of Disk Adapters
Periodically grease the threads of the disk adapters.
4.2.3 Rubber Pads
Periodically check the rubber pads for wear and
replace them as required.

29. Maintenance ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 25
4.2.4 Brake Check
Once annually check the brake blocks for wear
and replace them as required.
Make sure the contact surface between brake
block and pulley is free of lubricants.
4.2.5 Drive Belts
Periodically check the ribbed V-belts for wear, soiling and correct tension.
Worn-out belts have to be replaced. Make sure the running surface is free of lubricants.
4.2.5.1 Correct Belt Tension
The belt is tensioned correctly if a given test
force Fe = 100 N (≈ 10 kg) causes a depth of
impression te = 8 mm.
The measurement should be taken in center
between both pulleys and perpendicular to
the belt.
4.2.5.2 Checking the Belt Tension
A measuring tool (1), part № 03 3637 999, and
a belt tension meter (2), part № 20 9999, are
separately available from MAHA.

30. ECON II 3.0 / ECON II 3.5 Maintenance
26 D1 3619BA1-GB06
Position measuring tool and insert belt
tension meter as shown opposite.
Push sliding rings 1 and 2 to a low
scale range as shown below.
Scale 1 indicates depth of impression in cm. Deduct thickness of measuring tool (1 cm) and
depth of location hole (0.5 cm).
! Scale 2 indicates "test force" exerted in kg (1kg ≈ 10 N).
Press head of belt tension meter in direction of arrow until sliding ring 2 indicates value Fe.
! Remove belt tension meter.
! The belt is correctly tensioned if sliding ring 1 indicates value te minus 1.5 cm.
4.2.5.3 Tensioning the Belt
! Slightly open the 4 fastening screws (1) of the
motor.
! Tension the belt using the tensioning screw(2).
! Tighten the fastening screws (1).

31. Maintenance ECON II 3.0 / ECON II 3.5
D1 3619BA1-GB06 27
4.3 Cleaning
Caustic cleaning agents, salt water and brake fluid attack coatings and sealing materials.
Wash these substances off the lift immediately. Do not use high pressure or steam jet
cleaners.
Periodically treat the lift with oil or wax spray. Repair damage to the paintwork immediately to
prevent corrosion. The RAL number is available from MAHA.
4.4 Troubleshooting
Trouble
Cause Remedy
Lift stops while being raised / lowered. No LED lighting up.
Blown fuse. Check fuse, replace if required.
Lift stops while being raised. Green LED lighting up.
Preselected lifting height reached. Increase lifting height.
Lift cannot be raised from bottom position. Red LED lighting up.
Load nut failure. Load supported by catch
nut.
Have load nut replaced by MAHA service.
Lift stops while being raised. Yellow LED lighting up.
Overloaded lift. Observe load capacity, reduce load.
Belt failure.
Manually lower lift. Have belt replaced by
MAHA service.
Belt slip.
Lower lift and check belt tension. Tension
as required.
Insufficient lubrication.
Lower lift and check lubrication of load
nuts. Grease as required.
Lift stops while being lowered. Yellow LED lighting up.
Collision of swing arm(s) with obstacle.
Raise lift 10 cm min. and remove obstacle.
Fully lower lift and check for damage.
Belt failure.
Manually lower lift. Have belt replaced by
MAHA service.
Lift stops while being raised / lowered. Yellow LED flashing. Level difference between carriages
is approx. 10 cm.
Level difference between carriages too big.
Manually lower lift. Have repaired by MAHA
service.
Jerky lift operation.
Insufficient lubrication of one load nut.
Lower lift and check lubrication of load
nuts. Grease as required.
Power loss. / Defective motor.
Have motor checked/replaced by MAHA
service.