JMP FOX 4000 H, Operation Instructions Manual

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9. Behaviour in case of malfunction
Impaired operational readiness of the lift may be the result of a simple fault. Inspect the plant for specified
causes of faults. The Matthies workshop service should be informed if the fault cannot be remedied through
checking of the specified causes.
⚠
Independent repair work on safety equipment of the lift and inspections
of the electrical system should only be realised by skilled personnel.
Problem: Motor fails to start.
Possible causes: Remedy:
No power supply. Check power supply.
Main switch is not activated or defective. Check main switch.
Main on-site fuse defective. Check fuse, replace if necessary.
Power supply line interrupted. Check power supply line.
Thermal protection of motor active. Allow motor to cool down.
Motor defective. Inform workshop service.
Problem: Motor running, load is not raised.
Possible causes:
Remedy:
Vehicle is too heavy. Unload vehicle.
One phase conductor is not connected or twisted. Check or connect phase conductor.
Hydraulic oil level is too low. Refill correct hydraulic oil.
Hydraulic valve defective. Inform workshop service.
Pressure relief valve defective. Inform workshop service.
Air/leakage in hydraulic system. Check for leak, inform workshop service if necessary.
Problem: Lift cannot be lowered.
Possible causes:
Remedy:
Lift resting on obstacle. Press “Up” button until the obstacle can be removed
Hydraulic valve defective. Inform workshop service.
“Down” button defective. Have button checked.
Safety catch does not trigger. Inform workshop service.
Problem: Lift lowers without being operated.
Possible causes:
Remedy:
Hydraulic lines leaking. Repair leakage, inform workshop service if necessary.
Seal rings on pump outlet damaged. Replace seal rings, inform workshop service if necessary.