stellar labs EC3200 - Hoist Troubleshooting Guide

Troubleshooting 47
PN 44024
Hoist Troubleshooting
PROBLEM
Hoist won’t operate in
either direction or motor
doesn’t operate.
Hoist will power-out but
not power-in.
Hoist will power-in but not
power-out.
Motor tries to power-out
but hoist stalls or locks up.
Hoist operates in both
directions but will not lift
rated load.
Hoist slows down and stalls
during power-out.
Hoist vibrates badly or is
noisy during lifting or
lowering of load.
PROBABLE CAUSE
Power is not connected..
Emergency on/off switch
(optional) is in “off” position.
Failure of components or
wiring inside controller.
Bosch Relay is malfunctioning.
Power to remote control
pendant has been
interrupted.
Load brake failure.
Low voltage at hoist.
Brake needs servicing.
Brake needs servicing.
Mounting surface is not flat.
Tie rod or tie bar is bent.
CORRECTION
Check wiring connections. Check for 12v at
positive terminal on controller. Check for
voltage on the controller terminals with remote
switch in either direction.
Check position of emergency on/off switch
(optional).
Check for 12v at center pin of remote socket
on controller. Check continuity of remote lead
connector from center pin to either side pin
with remote control on/off switch in both
positions.
Replace relay if defective.
Check for 12v at center pin of remote socket
on controller. Check continuity of remote lead
connector from center pin to either side pin
with remote control on/off switch in both
positions. Check continuity on crane wiring
harness.
Service or replace load brake.
Be sure wiring cable size guidelines have been
met.
Check condition of batter.
Check all power wiring and connections for
corrosion. Clean and tighten connections.
Service or replace load brake.
Service or replace load brake.
Check to make sure mounting surface is flat to
withing +/- 0.020 in. (0.50 mm). Replace tie rod
or tie bar if necessary. Check for bent or
cracked housings.
For detailed information on the crane hoist, please refer to the WARN Industrial Hoists
Installation and Operator’s Guide (WARN PN 72561 A1).