9-30 Troubleshoong
Magnum 4A Control Wiring and Adjustment Manual www.NabcoEntrances.com
Part #C-00084 Rev. 9-09-16
Trouble
Possible Cause Action
Door slams open.
X
X
in place.
Operator may not be correctly
preloaded.
operator spindle per hardware installation manuals.
If Fuse 1 (F1) opens
auxiliary devices such as sensors from terminals
such as a transformer.
Motor spins when
activated but door does
not open.
Reverse motor leads on motor.
spider coupling loose between
motor and operator.
Separate motor from operator.
Inspect couplings for looseness.
Magnum 4A has no effect.
X
manuals.
X
high and motor cannot power
open position.
header out one turn.
closing at correct position.
Door does not stay
tightly closed.
Preload may not be correct.
operator spindle per hardware installation manuals.
too light.
is excessive.
close module.
X
X
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