Nussbaum UNI-LIFT 6500, Инструкция по эксплуатации и документация

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Opera ting instruction a nd documenta tion
UNI-LIFT 6500 - 8000
UNI LIFT 6500 - 8000 - 39 - Version 1.0
6.3 Emergency lowering in case of power failure or defective valves
In case of power failure or defective valves the hydraulic valve for lowering of the lift, the
stop valves at lower side of the hydraulic cylinders and the pneumatic valve to unlock the
ratchet can not be opened. Therefore the lift cannot be lowered. In this case there is the
possibility to lower the lift by opening the hydraulic valve manually, so the car can be driven
off.
If the vehicle is lifted with an axle-lift, the axle-lift must be lowered first, because
the emergency lowering screw of the axle-lift cannot be activated if the lift has
been lowered.
The emergency lowering can only be performed when the ratchets are not
engaged (they can be lifted manually).
The emergency lowering must only be performed by persons instructred to
use the lift. Please refer to the regulation „lowering“. If the hydraulic hoses
are damaged, restore them and go on as described in the operating
instructions.
6.4 Emergency lowering
Loosen security nut (marked with red colour) at the valve located at the bottom of
each cylinder. This nut secures the set screw. Turn in the set screw for about one
turn. This has to be done at both cylinders.
The emergency lowering must be carried out in the following order, otherwise
there can be a risk for damages or for life and limb.
If the hydraulic hoses are broken, the lift lowers into the ratchets. The ratchet
engages and the lift can not be lowered anymore. The defective hydraulic hoses
must be replaced before using the lift again.
If the hydraulic hoses are not defect, lift ratchets at hydraulic cylinders manually and
support them with a suitable object (i.e. wedge between cylinder and upper part) so they
cannot engage (see picture 3). This procedure must be performed at both hydraulic
cylinders.
• Remove motor-covering from operation unit
• Loosen security nut of emergency lowering screw at operation unit (marked with red
colour, see picture 4)
• Loosen emergency lowering screw (thread pin) for about one turn (unscrew it) to
start with lowering.