Prowinch PWR M5 Series, User Manual

Page: 63 / 95

Troubleshoooting
63
Version 1.0 | 63 |
Condition
Reason Action Cause Correction
Electric shock
upon touching
machinery or
control switch
Equipment not properly
grounded
Measure earth resis-
tance. If below 100Ω
assemble ground wire
Improper ground wire
connection
Firmly connect ground wire
Ground wire bad con-
nection Assemble carefully to prevent
loose screw
Cable break
Do not apply excessive force
on cable
Dampness/ water
Clean, use once dry Wet hands
Do not operate with wet
hands
Condition
Reason Action Cause Correction
Hook mouth
open
Hook deformation
Replace hook if
deformation is beyond
permitted range.
Overload Operate under rated voltage
Lifting (hook connected
with grounded object)
Do not lift grounded objects.
Load hanging on hook
head;
hook pull horizontal
Lifting load properly with
hook
Hanger suspension
errors Lifting angle must be controlled
within 120 °
Load size exceeds
rated hook
Using proper hook
Hook twist
Chain wrapped around
load
Do not wrap chain
Head hook im-
proper rotating
Bearing rust,
corrosion
Hand rotation; maintain
or replace
if experiencing difficulty
rotating
Inadequate grease
lubricant; corrosion
Apply grease lubricant regularly;
prevent hook contamination
of chemical agents
Bearing damage Dust
Prevent foreign matter from
entering head
Electric Shock
Hook