Emergency Lift Discharge; Do An Emergency Discharge - Nussbaum POWER LIFT HL 2.60 SST DG Manuel D'exploitation

6.2 Emergency lift discharge

An emergency discharge is an access into the lift controls and may only be done by
experienced specialists.
The emergency discharge must be done in the following described sequence,
otherwise it can lead to damage and hazard to life and limb,
Any kind of external leakage (defective hydraulic pipe) is not permitted and must
immediately taken care of. This is absolutely necessary especially before an
emergency discharge.
An emergency discharge can only be done by personnel who are trained to operate
the lift.
Reason which make an emergency discharge necessary are for example, electrical blackout,
for errors in the lowering valves, etc.
For a power outage or defective valves, there is the option of lowering the lift to the lowest
position with some manual movements, so the vehicle can be moved from the lift.

6.2.1 Do an emergency discharge

•
Switch off the main switch and secure against restart (shut down).
•
Loosen and remove all unit covers.
•
For safety reasons, block off the endangered area and the lift leaving ample room.
at
Operating Manual and Inspection Book
POWER LIFT HL 2.60 SST DG
Figure 6:
Loosen and remove 2 counter nuts (spanner width 41)
the upper end of the lift rails in the direction of the arrow.
This procedure must be done on all lift rails.
Figure 7:
The piston rods can jam in the upper bore of the lift rail
when they are limited by any contamination deposits.
To loosen these connections, we recommend a
commercially available solvent and simultaneous
lubricant (e.g. WD40). Spray this penetrating spray
generously between the thread and bore. The
treatment time depends on the degree of
contamination.
- 22 -