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11.4 Corrective maintenance
EN
Problem
Winch
won't
operate
either direction or motor
doesn't operate
Winch will power out but not
power-in
Winch will power-in but not
power-out
Motor tries to power-out but
winch stalls or locks-up
Winch
operates
in
directions but will not lift
rated load
Winch
slows
down
stalls during power out
Winch vibrates badly or is
noisy during use under load
Possible cause
Power
is
not
connected
-or-
Emergency on/off
switch is in "off"
in
position
Power to remote
pendant has been
interrupted
Failure in remote
control
pendant
switch or wiring
Failure of
components or
wiring inside
controller
Power to remote
control pendant
has been
interrupted
Load brake failure Service or replace load brake.
both
Low
voltage
at
winch
and
Brake needs
service
Brake needs
servicing
11.4
Maintenance corrective
Corrective action
A) Check wiring connections. Check for 12 at
positive (+) terminal on controller. Check for
voltage at blue and yellow terminals with remote
switch in either direction.
B) Check position of emergency on/off switch.
Check for 12v at center pin of remote socket on
controller.
Check
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.
Check for 12v at center pin of remote socket on
controller.
Check
connector from center pin to either side pin with
remote control pendant on/off switch pushed in
both positions. Replace remote control pendant if
there is no continuity.
Check for 12v at center pin of remote socket on
controller.
Check
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. If none of these corrective actions
resolves problem, return the trolley to Starter.
Check for 12v at center pin of remote socket on
controller.
Check
connector from center pin to either side pin with
remote control pendant on/off switch pushed in
both positions. Replace remote control pendant if
there is no continuity
A) Check condition of battery.
B) Check all power wiring and connections for
corrosion. Clean and tighten connections
Service or replace load brake.
Service or replace load brake.
- 34 -
continuity
of
remote
continuity
of
remote
continuity
of
remote
continuity
of
remote
MU0094.B
lead
lead
lead
lead
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