Operating Instruction and Documentation
4.40 ND
- 15 -
6.1 Lowering onto an obstacle
• In case the lift is lowering onto an obstacle, only the ropes becomes flabby (slack) which
are in the near area of the obstacle. Under the rail at the hydraulic cylinder is a safety
device, which switches the lifting platform off as soon as a rope becomes flabby or tears.
During this procedure by spring action a sliding element on the piston rod is pushed onto
a limit switch.
The lift switched off and the lowering procedure stops.
• In case the ropes are slack, press only the button “lifting” (A) and the button (C)
simultaneously and raise the lift until the obstacle can be removed.
6.2 Emergency lowering
A emergency lowering is an intervention into the controls of the lift and can be done
only by experienced expert.
The emergency lowering must be carried in this order. Otherwise a malfunction may
lead to damage to equipment, injury or even death.
Every kind of external leakage must be removed. This is particularly necessary before
an emergency lowering.
The emergency lowering may only be done by persons who are trained in using the lift.
• It is possible to open the hydraulic valve manually to lower the lift into the lowest position.
• In case the lift is locked in the safety ratchets, every ratchet must pull back manually.
First, raise the crossbeam with a help of a jack until the tooth of the ratchet is movable.
Fasten the ratchet with suitable support (wire), so the ratchet tooth of the ratchet can not
engage in ratchet-strip any more.
Repeat this process at all four ratchets.
• Check all danger points of the lift and be sure that there are no objects or people in the
working area (danger area) around the lift or on the lift.
• Press the lever slowly downwards. The lowering movement can be adjusted with the
hand lever.
• Observe the complete lowering procedure. With danger let go off the hand lever.
• Lower the lift in the lowest position and remove the vehicle.
• Switch off the main switch and secure it against unauthorised operation until the defective
pieces or valves have been replaced.
Phone your service partner.
Do not work with the lift until the defective parts are changed.
After the emergency-lowering process, remove the wire at the ratchets; otherwise the
safety device is out of function.
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