Operation And Maintenance - Chamberlain LiftMaster LA412 Owner's Manual

SAFETY
» IMPORTANT SAFETY INFORMATION
PROGRAMMING
To prevent possible SERIOUS INJURY or DEATH from a moving gate or
garage door:
• ALWAYS keep remote controls out of reach of children. NEVER permit children
to operate, or play with remote control transmitters.
• Activate gate or door ONLY when it can be seen clearly, is properly adjusted,
and there are no obstructions to door travel.

OPERATION AND MAINTENANCE

To reduce the risk of SEVERE INJURY or DEATH:
• READ AND FOLLOW ALL INSTRUCTIONS.
• NEVER let children operate or play with gate controls. Keep the remote control
away from children.
• ALWAYS keep people and objects away from the gate. NO ONE SHOULD
CROSS THE PATH OF THE MOVING GATE.
• Test the gate operator monthly. The gate MUST reverse on contact with a rigid
object or stop when an object activates the non-contact sensors. After
adjusting the force or the limit of travel, retest the gate operator. Failure to
adjust and retest the gate operator properly can increase the risk of INJURY
or DEATH.
TROUBLESHOOTING
To protect against fire and electrocution:
• DISCONNECT power and battery BEFORE installing or servicing operator.
• ALWAYS keep gate or garage door in sight until completely closed.
NEVER permit anyone to cross path of moving gate or door.
• Use the emergency release ONLY when the gate is not moving.
• KEEP GATES PROPERLY MAINTAINED. Read the ownerʼs manual. Have a
qualified service person make repairs to gate hardware.
• The entrance is for vehicles ONLY. Pedestrians MUST use separate entrance.
• Disconnect ALL power BEFORE performing ANY maintenance.
• SAVE THESE INSTRUCTIONS.
For continued protection against fire:
• Replace ONLY with fuse of same type and rating.
5