To Open The Door Manually; Operation; Care Of Your Opener - Chamberlain LiftMaster LM3800A Instructions Manual

OPERATION

EMERGENCY DOOR RELEASE
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 the doorway is clear of persons and obstructions.
ADJUSTMENT STEP 6

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 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.
Using Your Door Opener
Your operator and hand-held remote control have been factory-set to a
matching code which changes with each use, randomly accessing over
100 billion new codes. Your operator will operate with up to 64 remote
controls and one Keyless Entry System. If you purchase a new remote,
or if you wish to deactivate any remote, follow the instructions in the
Programming section.
Activate your operator with any of the following:
• The hand-held Remote Control: Hold top middle button down until the
door starts to move.
• The wireless wall control 128LM press and hold the large round button
down until the door starts to move.
• The Keyless Entry (See Accessories): If provided with your door
operator, it must be programmed before use. See Programming.
When the operator is activated (with the safety reversing sensor
correctly installed and aligned)
1. If open, the door will close. If closed, it will open.
2. If closing, the door will reverse.
3. If opening, the door will stop.
4. If the door has been stopped in a partially open position, it will close.
5. If obstructed while closing, the door will reverse. If the obstruction
interrupts the sensor beam, the operator wil click for five seconds.
6. If obstructed while opening, the door will stop.
7. 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 misaligned, the door won't close from a
hand-held remote. However, you can close the door with the Door
Control, the Outside Keylock, or Keyless Entry, if you activate them until
down travel is complete. If you release them too soon, the door will
reverse.
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Automatic Close Timer Function
Note: Requires the Chamberlain Protector System (IR-sensors) to be
installed. If Protector System (IR-sensors) is installed only to enable the
timer to close function (first time), install Sensors close to garage door
and wait for 5 minutes.
A Multi-function Door Control (78LM) is required to enable and disable
the auto-close function.
Enable: Push and hold lock button on the Multi-function Door Control
until the electric lock toggled twice. At the same time watch the LED light
in the center of the actuator button from the Multi-function Door Control.
1x blink 10 seconds Auto-Close
2x blink 45 seconds Auto-Close
3x blink 2 minutes Auto-Close
4x blink 3 minutes Auto-Close
5x blink OFF Auto-Close
Factory setting is OFF. Repeat the procedure until the Multi-function Door
Control shows the required number of blinks.

CARE OF YOUR OPENER

MAINTENANCE SCHEDULE
Once a Month
• Manually operate door. If it is unbalanced or binding, call a trained door
systems technician.
• Check to be sure door opens & closes fully. Adjust limits and/or force if
necessary (see Adjustment Steps 1 and 2).
• Repeat the safety reverse test. Make any necessary adjustments (see
Adjustment Step 5).
Once a Year
• Oil door rollers, bearings and hinges. The operator does not require
additional lubrication. Do not grease the door tracks.