68
NABRICO DF-1 N ELECTRIC WINCH Owner’s Manual
OM-DF1-021-A
MOTOR BRAKES
INSTALLATION & MAINTENANCE
RETAIN FOR FUTURE USE
U35000 - 19 of 19
www.nord.com/docs
06.13.16
NORD Gear Corporation
Toll Free in the United States: 888.314.6673
NORD Gear Limited
Toll Free in Canada: 800.668.4378
Troubleshooting
Cause
Remedy
Brake doesn’t release
Air gap too large
Check air gap and adjust
Brake not recieving electrical power
Check electrical connection
Failed rectifier
Replace rectifier
Brake is getting too warm
Use fast response (FR) rectifier
Voltage to brake coil too small
Check connection voltageof brake coil
Rectifier supply voltage from inverter
Rectifier voltage must be from seperate source.
(Inverter output voltage varies)
Brake release is delayed
Air gap too large
Check air gap and adjust
Voltage to brake coil too small
Check connection voltage of brake coil
Brake does not engage
Voltage to coil too large
Check connection voltages of brake windings
Hand release is adjusted incorrectly
Adjust to correct air gap
Anchor plate mechanically blocked
Remove mechanical blockage
Brake engagement is
delayed
Voltage to coil too large
Check connection voltage of brake windings
Brake is switched to AC side
Use DC switching
Troubleshooting Information
Summary of Contents for DF-1 N Series
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