Nussbaum 4.40 ND, Operating Instruction And Documentation, Page: 14 / 64

Operating Instruction and Documentation
4.40 ND
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6. Troubleshooting
If the lift does not work properly, the reason might be quite simple. Please check
the lift for the potential reasons mentioned on the following pages. If the cause of
trouble still cannot be found, please call technical service.
Self-employer repair-working is prohibited.
Problem: the lift does not lower!
Potential causes:
An obstacle is restricting the lift from being lowered
Fuse is defective
The ratchets are locked or defective
The ratchets magnetic is defective
Button “unlocking the ratchets” is defective
Wrong sequence when operation
Ball valve is defective
solution:
(see chapter 6.1)
Check the fuse
Phone the technical service
Phone the technical service
See chapter 5.2
Phone the technical service
Phone the technical service
Problem: Motor does not start!
Potential causes:
No power supply
Main switch is not engaged
The main switch is defective
The main fuse defective
The feed line is cut
Thermal switch in the motor is active
Motor is defective
Button “Lifting” defective
Rope is torn
solution:
examine the power supply
examine the main switch
examine the main switch
examine the Fuse
examine the complete cable
Let motor cool down
Phone the technical service
examine the switch
Switch off the main switch and
phone the technical service
Problem: Motor starts, lift does not lift!
Potential causes:
The vehicle is too heavy
Level of the oil is too low
Hydraulic valve is defective
Gear pump is defective
solution:
unload the vehicle
check the oil level, fill with hydraulic
oil as required
Phone the technical service
Phone the technical service