Chamberlain LiftMaster PROFESSIONAL SECURITY+ 3800C Mode D'emploi page 20

ADJUSTMENT STEP 5
Test Cable Tension Monitor
If your cable tension monitor has been activated the LED
will blink 9 times.
ADJUSTMENT STEP 6
Test Power Door Lock
TEST
• With the door fully closed, the power door lock bolt
should be protruding through the track.
• Operate the door in the open direction. The power
door lock should retract before the door begins
to move.
• Operate the door in the down direction. When the door
reaches the fully closed position, the power door lock
should automatically activate to secure the door.
NOTE: If the power door lock does not function, the lock
can be manually released by sliding the manual release
handle to the open position.
ADJUSTMENT STEP 7
To Open the Door Manually
Disengage door lock before proceeding. The door should
be fully closed if possible. Pull down on the emergency
release handle and lift the door manually. To reconnect
the door to the opener, pull down the emergency release
handle straight down a second time. The door will
reconnect on the next UP or DOWN operation.
Test the emergency release:
• Make sure the garage door is closed.
• Pull the emergency release handle. The garage door
should then be able to be opened manually.
• Return the door to the closed position.
• Pull the emergency handle a second time.
• Reconnect the door to the opener.
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20
WARNING
To prevent possible SERIOUS INJURY or DEATH from a
falling garage door:
CAUTION
• If possible, use emergency release handle to disengage
door ONLY when garage door is CLOSED. Weak or broken
springs or unbalanced door could result in an open door
falling rapidly and/or unexpectedly.
• NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.
Emergency
Release Handle
Power Door Lock
Manual Release
Lock Bolt
"Locked"