Prowinch PWA - Hook, Pulley & Trolley Issues

Version 1.0 Version 1.0
Troubleshooting
42
42
Electric shock
Hook
Condion Reason Acon Cause Correcon
Electric shock upon touching
machinery or control switch
Equipment not prop-
erly grounded
Measure earth resistance. If below
100Ω assemble ground wire
Improper ground wire con-
necon
Firmly connect ground wire
Ground wire bad connecon
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
Condion Reason Acon Cause Correcon
Hook mouth open
Hook deformaon
Replace hook if deformaon is
beyond permied range.
Overload Operate under rated voltage
Liing (hook connected with
grounded object)
Do not li grounded objects.
Load hanging on hook head;
hook pull horizontal
Liing load properly with hook
Hanger suspension errors
Liing angle must be controlled
within 120 °
Load size exceeds rated hook Using proper hook
Hook twist
Wire rope wrapped around
load
Do not wrap wire rope
Head hook improper rotang
Bearing rust, corro-
sion
Hand rotaon; maintain or replace
if experiencing diculty rotang
Inadequate lubricaon;
corrosion
Apply grease lubricant regularly;
prevent hook contaminaon of
chemical agents
Bearing damage Dust
Prevent foreign maer from
entering head
Load pulley and empty pulley
Bearing
Condion Reason Acon Cause Correcon
Irregular sound from springs
(cracking sound)
Wear of pulley
Measure slot edge thickness and
wire rope, replace if badly worn
Long-term operaon with
insucient lubricaon
Apply lubricang oil regularly
Excessive operaon Avoid excessive operaon
Overload Use under rated load
Incline pull Avoid incline pull
Condion Reason Acon Cause Correcon
Unable to li loads Breakage Replace bearing
High temperature or high
frequency
Avoid use at high temperatures
or high frequency