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This section provides basic troubleshooting information. Specific causes to problems are best identified by thorough inspections
performed by personnel instructed in safety, operation and maintenance of this equipment. The chart below provides a brief guide to
common winch symptoms, probable causes and remedies.
TROUBLESHOOTING
SYMPTOM
CAUSE
REMEDY
Motor overheats.
Motor not connected for the proper voltage.
Check power supply, connection diagram and correct
wiring.
Supply voltage varies outside the allowable
tolerance.
Assure correct supply voltage.
Ambient temperature is too high.
Ensure cool air gets to the motor.
Motors allowable duty cycle is exceeded. Too many
starts per hour.
Reduce the duty cycle to allowable limits.
Winch is overloaded.
Reduce load to within winch capacity.
Motor does not run.
Blown fuse.
Determine and correct cause of failure and replace fuse.
Motor protection device faulty.
Check protection device for faults.
Motor hums and draws high
current.
Faulty or damaged winding.
Have motor repaired by authorized Service Repair shop.
Motor will not start or starts
sluggishly.
Motor is not connected for correct voltage.
Check wiring diagrams and correct wiring.
Large voltage and/or frequency fluctuation at
starting.
Ensure stable power supply is available.
Motor runs in wrong
direction.
Motor supply leads misconnected.
Switch the two electrical supply leads.
Chain jumps on sprockets or
is making a snapping sound.
Sprockets may be out of alignment.
Align sprockets as described in the "MAINTENANCE"
section, under chain adjustment.
Chain requires lubrication.
Lubricate chain as described in "LUBRICATION"
section.
Chain may be stretched or worn.
Refer to "INSPECTION" section for chain inspection
information.
Brake does not release.
Maximum air gap exceeded because of worn brake
pad.
Readjust brake. If brake pad is totally worn, replace
brake disc.
Rectifier failed.
Replace brake coil and rectifier.
Incorrect supply voltage to rectifier.
Correct the supply voltage.
Winch does not brake.
Brake pad worn or air gap is too large.
Replace brake pad and adjust brake.
Winch will not pull load.
Torque Limiter (optional feature) may be damaged
or adjusted incorrectly.
Check Torque Limiter for presence of oil, grease or
corrosion on the driving surfaces. Clean and adjust as
required.
Winch is overloaded.
Reduce load to within winch capacity.
Summary of Contents for 10000B20
Page 13: ...12 DRUM SWITCH CONNECTION DIAGRAMS Dwg MHP0201...
Page 14: ...13 230 Volt Single Phase 60 Hz Dwg MHP0271 WIRING DIAGRAM...
Page 15: ...14 WIRING DIAGRAMS Dwg MHP1086...
Page 16: ...15 Dwg MHP1087 WIRING DIAGRAM 208 575 Volt Three Phase 50 or 60 Hz 22 Amp and smaller...
Page 17: ...16 WIRING DIAGRAM Dwg MHP1088 208 575 Volt Three Phase 50 or 60 Hz 22 Amp and larger...
