Chamberlain 3900PLD Garage Door Opener User Manual


 
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ADJUSTMENT STEP 5
Test Cable Tension Monitor
If your cable tension monitor has been activated the
Indicator Light will blink 9 times. See (Figure 1) page 16.
ADJUSTMENT STEP 6
To Open the Door Manually
The door should be fully closed if possible. Pull down on
the emergency release handle until a click noise is heard
from the unit and lift the door manually. To reconnect the
door to the operator, pull down the emergency release
handle straight down a second time until a click noise is
heard from the unit. The door will reconnect on the next
UP or DOWN operation.
Test the emergency release:
Make sure the door is closed.
Pull the emergency release handle. The 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 operator.
To prevent possible SERIOUS INJURY or DEATH from a falling
door:
If possible, use emergency release handle 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 handle unless doorway is
clear of persons and obstructions.
NOTICE
Emergency
Release Handle