6. Action in the event of a fault
14
117592 ● 03/2013
6. Action in the event of a
fault
Check the lift with reference to the potential
causes of the faults listed below.
If the fault cannot be rectified as per the list of
causes, inform the customer service at your
dealership.
6.1 Operator troubleshooting
Cannot switch the lift on
Cause:
1. No power supply.
2. Main switch not activated.
Remedy:
1. Switch on the power supply.
2. Activate the main switch.
Motor does not run.
Cause:
1. Fuse or circuit breaker burnt out.
Remedy:
1. Replace the burnt fuse or put the circuit breaker
back.
2. Contact the service staff for support.
The motor runs and raises the unloaded lift – but
not with the vehicle.
Cause:
1. Lift overloaded.
Remedy:
1. Check the weight of the vehicle on the lift.
2. Contact the service staff for support
Oil leaks
Cause:
1. Hydraulic fittings loose
2. Hydraulic line broken or faulty fitting
Remedy:
1. Tighten the hydraulic fitting
2. Replace the hydraulic line or fitting.
3. Contact the service staff for support
Lift does not react to controls or stops during
operation.
Cause:
1. No connection to power supply.
2. Power supply disconnected.
3. Fuse damaged / burnt out.
4. Thermal protection reacted.
5. Transformer damaged.
6. Broken chain switch or the lifting chain has
reacted to unusual tensioning of the lifting chain.
Remedy:
1. Connect the control unit to the power supply.
2. Check the power supply.
3. Replace the fuses.
4. Wait until the thermal protection has cooled and
continue operation.
5. Replace the transformer.
6. Make sure that there are no obstacles blocking
the travel of the slider blocks. If necessary, tighten
the synchronisation cables or lifting chains.
7. Contact the service staff for support
12
The lift starts when the UP button and the
SAFETY lever are activated at the same time, but
then stops while the motor continues to run.
Cause:
1. Oil level too low.
2. Load too heavy.
3. Hydraulic release valve incorrectly set.
4. Hydraulic solenoid opened, dirty or faulty.
5. Hydraulic pump or check valve is faulty.
Remedy:
1. Check the oil level.
2. Check the load.
3. Check the hydraulic pressure (Fig. 12).
4. Close, clean, or replace the solenoid valve.
5. Replace the hydraulic pump or the check valve.
6. Contact the service staff for support
When the DOWN button and the SAFETY lever
are activated at the same time, the lift does not
lower.
Cause:
1. The slider blocks have not been sufficiently raised
before lowering.
2. The latch control cable is slack or broken.
Remedy:
1. Press the UP and the DOWN button to disengage
the mechanical safety latches.
2. Remove the two covers over the mechanical
safety latches, operate the hydraulic pump,
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