Operating instructions and documentation
4.50H/ 4.50H plus
- 30 -
• Remove the support (wedge) or the wire from the ratchets
.
To guarantee the safe running of the lift, the supports must be removed.
• Do not work with the lift until the faulty parts are exchanged. Call the service-partner.
Switch off the main switch and lock it. Do not work with the lift until the faulty parts are
exchanged.
picture 2: 1 emergency lowering screw
2 lever
3 override switch
6.3 Emergency lowering of the wheel free lift
In case of power failure or defective valves, the hydraulic valves for lowering of the wheel
free jack and the safety valves at lower side of the hydraulic cylinders and the magnet to
unlock the ratchet can not be opened. Therefore the lift cannot be lowered. In this case
it is possible to lower the lift by opening the hydraulic valve manually, so the vehicle
can be driven off.
The emergency lowering must only be performed by persons instructed to use the lift.
Please refer to the regulation "Lowering".
• Put the lever (on the side of the rail) on position wheel free lift.
• On the cylinder (wheel free lift) are safety valves. Unscrew the red locknut and
turn the set screw with a hexagon socket screw key one direction clockwise.
• Unscrew the red locknut (on the side of the rail) and turn the set screw with a
hexagon socket screw key one direction anticlockwise.
• The lowering process starts. Observe the complete process.
• If the wheel free lift is in the lowest position. Fasten and safe the set screw and
the locknut.
After finishing the emergency lowering, the emergency screw and the red security nut
must be brought into the position they have had before. Otherwise malfunction of the
wheel free jack can occur.
