Operating Instruction and Documentation
UNI-LIFT 4000
- 44 -
The lift is standing on a obstacle
The lift is locked in the ratchet
Seat valve defective
The Photo electric is interrupt /the reflector is dirty
See chapter 6.1
See chapter 5.3
Examine the electrical power
supply to the valves
Check the Photo electric/Reflector
Problem: No automatically levelling of the platforms
possible causes:
solution:
Pneumatic valve is defective (valve for the
equalisation ball valve)(Pneumatic plan Nr. 0.1)
Seat-valve at the cylinders defective
Exchange the valve
Carry out an emergency lowering
6.1 Driving on an obstacle
If the lift is running onto an obstacle while lowering, the lift stops immediately. In this case
please perform as follows:
Driving onto an obstacle with the master side
• Push button ”Lifting” until the obstacle can be removed.
• Remove
obstacle.
• Now the lift has the normal function again and can be used as described in this manual.
Driving onto an obstacle with the slave side
• Push bypass switch, located behind the cover at the right side of the command unit
(see pic. 2)
• Push button ”Lifting” simultaneously until the obstacle can be removed.
• Remove obstacle. Now the lift is in normal function again and can be used as described in
this manual
6.2 Emergency lowering
A emergency lowering is an intervention into the control of the lift and can be done
only by experienced expert.
The emergency lowering must be carried in this order. Otherwise a malfunction can
lead it to damages or lead to danger for body and lives.
Every kind of external leakage must be removed. This is necessary particular before
an emergency lowering.
Reasons which provoke an emergency lowering are e.g. disturbances of the valves or a
breakdown of the power supply.
6.2.1 Emergency lowering with the main lift
In case of power failure the control valve, the stop valves at the cylinders and the pneumatic
valves that release the ratchets will not open. Therefore the lift cannot be lowered. In this case
there is the possibility to lower the lift by opening the valves manually, so the vehicle can be
driven off.
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