LiftMaster RSL12U RSL12U Troubleshooting Guide Manual - Page 8

Dc Motors, Symptom, Check The Motor, Solution

Page 8 highlights

BASIC TROUBLESHOOTING To protect against fire and electrocution: • DISCONNECT power (AC or solar and battery) BEFORE installing or servicing operator. DC MOTORS SYMPTOM: The motor will not run. CHECK THE MOTOR: Disconnect ALL power from operator. Disconnect the gate from the operator. 12V MOTOR 24V MOTOR DIAGNOSTICS 1 Disconnect the motor harness from control board. Jumper Cables MOTOR DIAGNOSTICS 1 Disconnect the motor harness from control board. Jumper Cables MOTOR Connect the battery to the motor 2 harness as shown. BATTERIES Connect the batteries to the motor 2 harness as shown. SOLUTION: If the motor did not run, replace the motor. 7

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7
DIAGNOSTICS
1
2
Jumper Cables
DIAGNOSTICS
1
2
Jumper Cables
BATTERIES
MOTOR
MOTOR
BASIC TROUBLESHOOTING
To protect against fire and electrocution:
DISCONNECT power (AC or solar and battery) BEFORE installing or servicing operator.
DC MOTORS
SYMPTOM:
The motor will not run.
CHECK THE MOTOR:
Disconnect ALL power from operator. Disconnect the gate from the operator.
Disconnect the motor
harness from control
board.
Connect the battery to the motor
harness as shown.
SOLUTION:
If the motor did not run, replace the motor.
12V MOTOR
24V MOTOR
Disconnect the motor harness
from control board.
Connect the batteries to the motor
harness as shown.