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Problem
Hoist will
power-in but
not power-out
Motor tries to
power-out but
hoist stalls or
locks-up
Hoist oper-
ates in both
directions but
will not lift rated
load
Hoist slows
down and stalls
during power-
out
Hoist vibrates
badly or is
noisy during lift-
ing or lowering
of load
Possible cause
Power to remote
control pendant
has been inter-
rupted
Load brake failure
Low voltage at
hoist
Brake needs
service
Brake needs
servicing
Mounting surface
is not flat. Tie rod
or tie bar is bent
WARN Industrial Hoists
Corrective action
Check for 12v (24v) at center pin of remote
socket on controller. Check continuity of re-
mote lead connector from center pin to either
side pin with remote control pendant on/off
switch in both positions. Replace remote
control pendant if there is no continuity
Service or replace load brake.
A) Be sure wiring cable size guidelines have
been met. B) Check condition of battery. C)
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 within +/- 0.020 in. (0.50 mm). Replace tie
rod or tie bar if necessary. Check for bent or
cracked housings.
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