Adjustment - Chamberlain 1265LMC 1/2 HP Owner's Manual

ADJUSTMENT STEP 1
Adjust the UP and DOWN Travel
Limits
Without a properly installed safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• Incorrect adjustment of garage door travel limits will
interfere with proper operation of safety reversal
system.
• If one control (force or travel limits) is adjusted, the
other control may also need adjustment.
• After any adjustments are made, the safety reversal
system MUST be tested. Door MUST reverse on
contact with one-inch high object (or 2x4 laid flat) on
floor.
To prevent damage to vehicles, be sure fully open door
provides adequate clearance.