Test Cable Tension Monitor; Test Automatic Door Lock; To Open The Door Manually - LiftMaster DDO8900W Manual Del Usuario

Adjustments
5

Test Cable Tension Monitor

1. With the door fully closed, push on the front of the cable tension monitor. A
click should be heard. If there is no click, the roller may be hitting the jamb and
not allowing the switch to detect slack in the cable. Make sure the cable tension
monitor is mounted flush with the mounting surface and the roller is free from any
obstructions.
If your cable tension monitor has been activated the UP and DOWN arrows will flash
diagnostic code 3-5, see page 27.
6
Test Automatic Door Lock (Not Provided)
1. With the door fully closed, the automatic door lock bolt should be protruding
through the track.
2. Operate the door in the open direction. The automatic door lock should retract before
the door begins to move.
3. Operate the door in the down direction. When the door reaches the fully closed
position, the automatic door lock should move into lock position to secure the door.
NOTE: If the automatic door lock does not function, the lock can be manually
released by sliding the manual release handle to the open position.
7

To Open the Door Manually

Disengage any door locks before proceeding. The door should be fully closed if possible.
Pull down on the emergency release until a click noise is heard from the door operator
and lift the door manually.
To reconnect the door to the door operator, pull the emergency release straight down a
second time until a click noise is heard from the door operator. The door will reconnect on
the next UP or DOWN operation.
TEST THE EMERGENCY RELEASE:
1. Make sure the door is closed.
2. Pull the emergency release. The door should then be able to be opened manually.
3. Return the door to the closed position.
4. Pull the sash chain a second time.
5. Reconnect the door to the door operator.
Sash Chain
22
Roller
Cable Tension
Monitor
Automatic
Door
Lock
Lock Bolt "Locked"
To prevent possible SERIOUS INJURY
or DEATH from a falling door:
• If possible, use emergency release
to disengage door ONLY when 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 unless
doorway is clear of persons and
obstructions.
UP and
DOWN
arrows
Manual
Release