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The coupling between
the motor and pump is
defective
Defective cylinder
Pressure relief valve is
defective
Problem: The lift cannot be lowered
Possible causes:
Lifting table is sitting on an
obstacle
Hydraulic valve defective
The
u
"Lower" button is
defective
6.1 Moving onto an obstacle
If the system moves onto an obstacle during lowering,
then it remains in position due to the mechanical resis-
tance. In this case, move the lift upwards by pushing the
o
"Lift" (2) button on the operating panel until the obstacle
can be removed. Afterwards the lift is in a normal work
condition and can continue to be operated as described
in the operating manual.
6.2 Emergency discharge during blackout
An emergency discharge is an
access into the system 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 is
not permitted and must immedi-
ately taken care of. This is abso-
lutely necessary especially before
an emergency discharge.
Reason
which
make
necessary are for example, electrical blackout, for errors
in the lowering valves, etc.
1. Switch off the main switch (2).
2. Loosen and remove the front unit covers (1).
3. Unscrew the pins of valves V1 and V2 counterclock-
wise.
OPI_JUMBO LIFT 4000 NT_V4.1_DE-EN-FR-ES-IT
Inform customer service
Inform customer service
Inform customer service
Remedy:
See 6.1 Moving onto an
obstacle
Inform customer service
Inform customer service
an
emergency
discharge
2
13
14
2 Main switch
13 Valve V1
4.
The lowering process starts immediately.
5.
The entire lowering process must continuously be
observed. Observe the reaction of the vehicle.
6.
Lower the vehicle to the lowest position.
7. Screw the pins of valves V1 and V2 back in completely.
7
Maintenance and care of the
system
Before maintenance, do all prepa-
ration work so there is no danger
to life or limb or object damage
during maintenance and repair
work.
Value is placed on long lifetimes and safety in the devel-
opment and production of Nussbaum products. To guar-
antee the safety of the operator, product reliability, low
running costs, keep the warranty and also the long-life-
time of the product, proper set up and operation is just
as important as regular maintenance and sufficient care.
The lift system is to be serviced at regular intervals ac-
cording to the following plan. For intensive operation and
higher degree of contamination shorten the service inter-
val.
The complete function of the lift system is to be observed
during daily use. Customer service must be informed of
any malfunctions or leaks.
To simplify maintenance work, follow instructions on the
maintenance sticker that is found somewhere on the unit,
depending on the lift design.
5
5 Oil filling opening
14 Valve V2
002
67
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