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