LiftMaster MGJ Medium-Duty Gear-Reduced Jackshaft Operator for Rolling Grilles and Shutters - Manual (Page 8)

T R O U B L E S H O O T I N G
To locate a dealer in your area visit us online at www.liftmaster.com
CONDITION POSSIBLE CAUSE FIX
OPERATOR WILL NOT
RESPOND TO ANY
COMMANDS No power ➤ Check circuit breaker.
Accessory failure ➤ Verify photo eyes are aligned.
Possible component failure ➤ Contact your installing dealer.
OPERATOR MAKES
NOISE BUT DOOR DOES
NOT MOVE Operator requires adjustment ➤ Contact your installing dealer.
DOOR DRIFTS AFTER
OPERATOR STOPS Operator or door requires
adjustment ➤ Contact your installing dealer.
DOOR OPENS/CLOSES
TOO FAR Operator requires adjustment ➤ Contact your installing dealer.
DOOR REVERSES
UNEXPECTEDLY Safety device activated ➤ Verify photo eyes are aligned. If photo eyes are aligned and operator still does
not operate properly, contact your installing dealer.
RADIO FUNCTIONALITY
NO RESPONSE Remote control is not
programmed ➤ See PROGRAMMING REMOTE CONTROLS section.
Low battery ➤ Replace battery.
REMOTE CANNOT BE
PROGRAMMED Low battery ➤ Replace battery.
POOR RANGE Low battery ➤ Replace battery.
Possible radio interference ➤ Contact your installing dealer.
8
Every 3 months or 5,000 cycles repeat all tests in the Testing
section.
Call qualified service contractor for maintenance. To locate a dealer
in your area visit us online at www.liftmaster.com.
The operator should be serviced at the following intervals:
• Every 3 months or 5,000 cycles
• Every 6 months or 10,000 cycles
• Every 12 months or 20,000 cycles
To avoid SERIOUS PERSONAL INJURY or DEATH from
electrocution, disconnect ALL electric power BEFORE performing
ANY maintenance.
ATTENTION
AVERTISSEMENT AVERTISSEMENT
AVERTISSEMENT
WARNING WARNING
CAUTION
WARNING
WARNING
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