27
Object of inspection Inspection interval
Daily Every 3
months
Check the condition and sufficient tightening of the attach-
ment bolts.
x
Check the condition of the wire (abrasions, broken strands,
rust)
x
Check the condition of the motor (oxidations, damages) x
Check the condition of the brake and its faultless operation x
Check the condition of the gears (abrasions, damages) x
TROUBLESHOOTING
Problem Cause Solution
Hoist will
not oper-
ate.
Loss of power. Have checked by a professional electrician.
Wrong voltage or frequency.
Check that the voltage and frequency of
power supply correspond with those
marked on the motor rating label. Have re-
paired by a professional electrician, if nec-
essary.
Overload. Reduce load to within rated capacity.
Improper, loose or broken wire in
the electrical system.
Have checked by a professional electrician.
Blown fuses.
Check fuses and have repaired by a profes-
sional electrician, if necessary.
Burned motor.
Have motor replaced by an authorized ser-
vice center.
Hoist lifts
but will
not lower.
Faulty switch in control unit. Have checked by a professional electrician.
Broken conductor in control unit
cable.
Have checked by a professional electrician.
Hoist low-
ers but will
not lift.
Overload. Reduce load to within rated capacity.
Worn friction clutch.
Have repaired by an authorized service cen-
ter.
Broken conductor in control unit
cable.
Have checked by a professional electrician.
Faulty switch in control unit. Have checked by a professional electrician.
Low voltage in power supply. Have checked by a professional electrician.
Hoist will
not lift
rated load
or does
not have
the proper
lifting
speed.
Overload. Reduce load to within rated capacity.
Low voltage in power supply. Have checked by a professional electrician.
Faulty friction clutch.
If unusual operation or slippage occurs, do
NOT attempt to disassemble or adjust the
mechanical load brake or friction clutch.
Have worn or malfunctioning mechanical
load brake with friction clutch replaced as
an assembly with a new factory part by an
authorized service center.
Load drifts Demagnetized motor. Motor demagnetizing is generally caused
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