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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.
• Fasten set screw when the upper parts of the ratchets have passed the last
ratchet cog and the ratchets cannot engage anymore (see picture 5)
• Remove supports from ratchets at both cylinders
UNI LIFT 6500 - 8000
Operating instruction and documentation
picture 3
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UNI-LIFT 6500 - 8000
Version 4.2
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