Operating Instruction and Documentation
UNI-LIFT 4000
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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 instructed to usethe lift.
Please refer to the regulation ”Lowering”.
The wheel-free-lift must be in the lowest position, before carry out the emergency lowering with
the main lift. If necessary carry out an emergency with the wheel free lift.
• Raise the ratchets at both hydraulic cylinders manually and support them with an appropriate
means (for example wedge between cylinder and upper part) so they cannot engage (see
pic. 4).
• Raise the passive ratchets at both sides and support them with an appropriate means (for
example: wedge between scissors and ratchet profile) so they cannot engage (see pic.4).
• Remove the motor cover at the operating unit.
• Remove both cover of the cylinder (fixed bearing at the bottom).
• Loosen the 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 (see pic.6).
pic 4: put in the wedge
pic 5: put in the wedge
Position of the vent screw
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