Prowinch PWJTHF, User Manual

Page: 47 / 51

Version 1.0
47
Troubleshooting
47
Chain Wheel
Load pulley and empty pulley
Chain Guide
Chain Wheel, Junction Part
Bearing
Condition Reason Action Cause Correction
Improper noise Wear of chain wheel
Check wear degree on chain, wheel
slot, and load chain. Replace if
badly worn
Long-term operation with
insufficient lubrication
Apply lubricating oil regularly
Excessive operation Avoid excessive operation
Overload Use under rated load
Incline pull Avoid incline pull
Condition Reason Action Cause Correction
Irregular sound from springs
(cracking sound)
Wear of pulley
Measure slot edge thickness and
load chain, replace if badly worn
Long-term operation with
insufficient lubrication
Apply lubricating oil regularly
Excessive operation Avoid excessive operation
Overload Use under rated load
Incline pull Avoid incline pull
Condition Reason Action Cause Correction
Increased shaking
Wear of chain guide
and guide pulley
Measure benchmark size and load
chain, replace if badly worn and
limit size exceeded
Incline pull Avoid incline pull
Condition Reason Action Cause Correction
Unable to lift loads Wear, breakage
Replace when obvious wear or
breakage occur
Long-term operation with
insufficient lubrication
Apply lubricating oil and inspect
annually
Long-term operation with
insufficient lubrication (joint
part of motor shaft)
Apply lubricating oil and inspect
annually
Irregular operation Wear, breakage
Limit switch used too
frequently
Avoid excessive use of limit
switch
Condition Reason Action Cause Correction
Unable to lift loads Breakage Replace bearing
High temperature or high
frequency
Avoid use at high temperatures
or high frequency
V.07.22 [LA]