Adjustment - Chamberlain LiftMaster 770E Mode D'emploi

Figure 6
Bell Wire
Finished
Ceiling
Sensor
Invisible Light Beam
Protection Area
Sensor
• Center each sensor unit in a „C" wrap with lenses pointing toward each
other across the door.
• Secure sensors with the hardware shown in Figure 6. Finger tighten
the wing nut on the receiving eye to allow for final adjustment. Securely
tighten the sending eye wing nut.
• Run wires from both sensors to the opener as shown in Figure 6. Use
insulated staples to secure the wire to the wall and ceiling.
• Connect both sets of wires to the opener terminals as shown.
TEST THE PROTECTOR SYSTEM™
• Press the remote control push button to open the door.
• Place an object large enough to obstruct the sensor beam in the path of
the door.
• Press the remote control push button to close the door. The door will not
move more than an inch (25mm).
The garage door opener will not close from a remote control if the
indicator light in either sensor is blinking (alerting you to the fact that
the sensor is misaligned or obstructed).
You can operate the garage door opener by disconnecting the safety
reversing sensor.
Professional service is required if the opener closes the door
when the Protector System™ is obstructed.
TROUBLE SHOOTING
1. If the sending eye or receiving eye indicator light does not glow after
installation, check for Electric power to the opener.
• A short in the black/white wires. These can occur under staples or at
screw terminal connections.
• Incorrect wiring between sensors and opener.
• An open wire, (wire break).
• Lock switch on Multi-Function Door Control Panel is on. Turn it off.
2. If both sensors are blinking, realign or remove obstruction.
You must ensure that the signal from the light barrier recognises the presence of persons or objects (vehicle).
Without additional safety precautions, the sensors do not guarantee total safety.
The product is in compliance with the essential requirements and other relevant provisions of the Directives 2004/108/EC and 2006/95/EC.
The CE Declaration of Conformity can be obtained from info@chamberlain.com
Connect Wire to
Opener Terminals
Bell Wire
Wing Nut
„C" Wrap
Sensor
Wire
Indicator
Light
1/4-20x1-1/2"
Hex Bolt
• Plug in the opener. If your opener has the Multi-Function Door Control,
make sure the Lock Feature is off. Red indicator lights in both the sending
and receiving eyes will glow if wiring connections and alignment are
correct.
• If the indicator lights are blinking (and the invisible light beam path is not
obstructed), alignment is required.
• Loosen the receiving eye wing nut to allow slight rotation of unit. Adjust
sensor vertically and/or horizontally until the red indicator light glows.
• When indicator lights are glowing in both units, tighten the wing nut in the
receiving eye unit.
TEST THE SAFETY REVERSE SYSTEM
Failure to test and adjust the safety reverse system may
result in serious injury or death from a closing garage
door. Repeat this test once a month and adjust as needed.
TEST:
• Place a one-inch (25mm) obstacle laid flat on the floor, centered under
the garage door.
• Operate the door in the down direction. The door must reverse on striking
the obstruction.

ADJUSTMENT:

If the door stops on the obstruction, it is not traveling far enough in the
down direction.
• Increase the DOWN limit by turning the DOWN limit adjustment screw
counterclockwise 1/4 turn.
• Repeat the test.
On a sectional door, make sure limit adjustments do not force the
door arm beyond a straight up and down position.
• When the door reverses on the one-inch (25mm) obstacle, remove the
obstruction and run the opener through 3 or 4 complete travel cycles to
test adjustment.
If the door will not reverse after repeated adjustment attempts, call for
professional door service.
Connect Sensor Wires
to Opener Terminals
Door Control
Sensor
Connections
Connections
(dotted line)
1 2 3
OPENER TERMINAL SCREWS
WARNING