Operation Of Your Opener - Craftsman 139.53491SRT Owner's Manual

Activate the opener with any of the following:
• The Remote Control: Hold push button down until
the door starts to move.
• The Door Control: Hold push bar or button down
until the door starts to move.
• The Outdoor Key Switch or Keyless Entry: (See
Accessories)
When the opener is activated with the safety reversing
sensor installed and correctly aligned:
1. If open, the door will close. If closed, the door will
open.
2. If closing, the door will reverse.
3. If opening, the door will stop (allowing space for entry
and exit of pets and for fresh air).
4. If the door has been stopped in a partially open
position, it will close.
5. If obstructed while closing, the door will reverse.
6. If obstructed while opening, the door will stop.
7. The garage door will reverse in the closing cycle when
the invisible beam is broken. If fully open, the door
will not close when the beam is broken. The sensor
has no effect in the opening cycle.
If the sensor is not installed, or is not aligned correctly,
the door won't close from any remote control. You can
close the door with the Door Control, the Outdoor Key
Switch, or Keyless Entry, however, if you activate them
until down travel is complete. If you release them too
soon, the door will reverse.
The opener lights will blink for 5 seconds when the safety
reversing sensor causes the door to reverse.
Opener Lights will turn on under the following
conditions: When the opener is initially plugged in; when
the power is interrupted; when the opener is activated.
They will turn off automatically after 4-1/2 minutes or
provide constant light when the Light feature is activated.
Bulb size is 100 watts maximum.
Press the lighted push button to open or close the door.
Press again to reverse the door during the closing cycle
or to stop the door while it's opening.
Premium Console:
Light feature: Press the large round Light button. If the
opener light is off, it will turn on. If the opener light is
on, (even in the 4-1/2 minute automatic cycle) it will
turn off.
But if you use the Light button to turn the lights on and
then activate the opener, the lights will turn off after 4-
1/2 minutes.
The Light button will not control the opener lights when
the door is in motion.

Operation of Your Opener

Trolley
Trolley
Release Arm
Emergency
Release
Handle
(Pull at 45° angle)
Trolley
Trolley
Release Arm
Operation of the Door Controls
(all may not be included with your model)
Weak or broken springs could allow an open door to fall
(either rapidl y or unexpectedly), resulting in serious
injury, death or property damage. If possible, use the
manual release rope and handle only when the door is
fully closed.
The Chamberlain Group, Inc.
Manual Disconnect
Trolley
Liftmaster Screw Drive #114A1794
ReleaseArm
(in Manual
6/2/94, 6/15
Disconnect
Position)
Lockout position
(Manual disconnect)
To reengage the trolley:
Pull the emergency release
handle toward the opener at
a 45° degree angle so that
the trolley release arm is
horizontal. The trolley will
reconnect on the next UP or
DOWN operation, either
manually or by pressing the
Door Control push button.
(see page 21)
Premium Console (cont.):
Lock feature: The Lock feature is designed to prevent
operation of the door from remote controls. However,
the door will open and close from the Door Control, the
Outdoor Key Switch and the Keyless Entry Accessories.
To activate: Press and hold the small round Lock
button for 2 seconds. The push button light will flash
as long as the Lock feature is on.
To turn off: Press and hold the Lock button again for
2 seconds.The push button light will stop flashing. The
Lock feature will also turn off whenever the SRT
button on the opener panel is activated.
32
WARNING
CAUTION
To open the door
manually:
Trolley
The door should be fully
closed if possible. Pull down
on the emergency release
handle (so that the trolley
release arm snaps into a
vertical position) and lift the
door manually. The lockout
feature prevents the trolley
from reconnecting auto-
matically, and the door can
be raised and lowered
manually as often as
necessary.
Emergency
Release
Handle
(Pull at 45° angle)
To reconnect
Trolley
Trolley
Release Arm
Trolley
Trolley
Release Arm