Troubleshoong 9-29
Rev. 9-09-16 Part #C-00084
www.NabcoEntrances.com Magnum 4A Control Wiring and Adjustment Manual
Trouble
Possible Cause Action
Operator does not function
Replace Fuse.
Test and Replace Fuse.
No incoming power.
properly connected.
X
and also both Motor Leads connected to
Replace motor if necessary.
X
leading to Motor.
Replace motor if necessary.
disconnect auxiliary devices such as sensors
power supply such as a Transformer.
Motor may be blown. Replace motor.
Safety circuit is activated. X
X Ensure safety sensors are not activated.
not be properly connected.
To signal a Door Open command activation devices
must provide a Dry Switch closure across Terminals
5 and 6.
Door slams closed
needs adjustment.
speed on Magnum control
needs adjustment.
continue as soon as recycling is done.
speed.
Motor circuit may be open.
X
X
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