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8
TROUBLESHOOTING
8.1
Troubleshooting instructions
Problem
The hoist does not work.
The load cannot be lifted.
1)
The braking path
is more than
10 cm (3.9 in).
The lifting or lowering direction
does not correspond to the
direction indicated on the
2)
controller
.
Abnormal noises are heard
when the load moves.
1)
Braking path: The distance that the load travels from the moment when the direction button on the
controller is released until the load stops completely.
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Possible cause
The emergency stop button is
activated.
A fuse is triggered.
The temperature control (optional)
is activated.
The contactor terminal screws are
loose (only with the hard wired
control version).
The main isolation switch is turned
off.
The hoist has an overload.
The slipping clutch is worn or
incorrectly adjusted.
The brake lining is worn.
The power supply is incorrectly
connected.
The chain components are not
correctly lubricated.
The chain is worn.
The chain sprocket or the chain
guide is worn.
3)
The return sprocket
is worn.
For the 3-phase hoist versions: A
supply phase is missing (the load
moves slowly or not at all).
Solution
Deactivate the emergency stop
button.
Check the fuse for the main power
supply. Check the control voltage
fuse. For instructions on how to
check or replace the control voltage
fuse, see chapter Replacing the
control voltage fuse.
Allow the system to cool.
Tighten the screws.
Turn on the main isolation switch.
Reduce the load.
Replace or adjust the slipping clutch.
For instructions, see chapter
Adjusting the slipping clutch.
Measure the brake lining (wear) and
replace the brake components, if
necessary. For instructions, see
chapter Checking the brake lining.
For the 3-phase hoist versions:
Change the two phases of the power
supply.
Lubricate the chain components. For
instructions, see chapter Lubrication.
Replace the chain. For instructions,
see chapter Replacing the chain.
Replace the chain sprocket or the
chain guide.
Replace the return sprocket.
Check the connection of the three
phases.
2)
8 TROUBLESHOOTING
4/2020
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