Harrington Hoists and Cranes RH Wire Rope Hoist - Manual (Page 66)

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Table 7-1 Troubleshooting Guide
Symptom Cause Remedy
Hoist and/or Trolley
operates intermittently
Contactor contacts
arcing
Check for burned contacts. Replace as needed.
Loose connection in
circuit Check all wires and terminals for bad connections. Replace as
needed.
Broken conductor in
Pendant Cord Check for intermittent continuity in each conductor of the Pendant
Cord. Replace entire Pendant Cord if continuity is not constant.
Trolley making loud
noise. Trolley wheel
maladjusted on beam Readjust the gap between the trolley wheel flange and the beam
flange.
Trolley will not move
Trolley wheel spacing
on beam too tight Readjust the gap between the trolley wheel flange and the beam
flange.
Abnormal noise from
wire rope and/or drum
Lack of lubrication,
worn wire
rope/drum/sheaves
Lubricate or replace wire rope/drum/sheaves