Test Cable Tension Monitor; Test Power Door Lock; To Open The Door Manually - LiftMaster 8500 Manual Del Usuario

Adjustment
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 wall and the roller is
free from any obstructions.
If your cable tension monitor has been
activated the LED on the garage door
opener will blink 9 times.
6

Test Power Door Lock

1. With the door fully closed, the power
door lock bolt should be protruding
through the track.
2. Operate the door in the open direction.
The power 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 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.
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 until
a click noise is heard from the garage door
opener and lift the door manually.
To reconnect the door to the garage door
opener, pull the emergency release handle
straight down a second time until a click noise
is heard from the garage door opener. The
door will reconnect on the next UP or DOWN
operation.
Test the emergency release:
1. Make sure the garage door is closed.
2. Pull the emergency release handle. The
garage door should then be able to be
opened manually.
3. Return the door to the closed position.
4. Pull the emergency handle a second
time.
5. Reconnect the door to the garage door
opener.
Roller
LED
Emergency
Release Handle
22
To prevent possible SERIOUS INJURY
or DEATH from a falling garage door:
• 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.
Cable Tension
• NEVER use emergency release handle
Monitor
unless garage doorway is clear of
persons and obstructions.
Power Door Lock
Manual Release
Lock Bolt
"Locked"