HAPP 40
© 2013 HAPP Australia Pty Ltd
Version 8
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P a g e
My carriage won’t come down when I first lift the hoist?
This is quite rare but is possible and can be due to the following:
•
Hoist balance cables are out of adjustment
Refer to sitting on safety lock, and adjust balance cables to synchronize lifting
/ lowering.
•
Hoist carriage (nylon bushes) are tight in column
Make sure the carriage is lubricated with grease, place some extra weight on
the arms to allow them to lower. They will bed in quickly.
•
Hoist carriage is sitting on safety lock
Lift the carriages and release the safety lock, then lower again
•
Oil bleed valve needs adjustment
This typically only occurs when customers have not used the correct hydraulic
oil grade which can be resolved by adjusting the bleed valve.
The bleed valve may be seated too close to the control block assembly.
The bleed valve is located on the control block of the pump assembly;; it has
an allen key with a locking nut. Note the position of the lock. Rotate the lock
nut to allow it to move out and retry. Another possible but unlikely cause can
be some blockage in the valve from an object in the hose during installation, in
this case remove the valve, clean and reload the valve.
