Chamberlain 5100-2K Manuale Utente

Invisible Light Beam

Protection Area

Sensor

Sensor

Connect Wire to

Opener Terminals

Bell Wire

Bell Wire

Finished

Ceiling

OPENER TERMINAL SCREWS

Sensor

Connections

Wall Control

Connections

(dotted line)

1/4-20x1-1/2"

Hex Bolt

 "C" Wrap

Wire

Sensor

Wing Nut

Indicator Light

• Run paired wires from both sensors to the opener.

Use insulated staples to secure wire to wall and
ceiling.

• Strip 1/4" of insulation from each set of wires.

Separate white and white/black wires sufficiently to
connect to the opener terminal screws:  white to 2
and white/black to 3.

• Plug in the opener. Make sure the Lock Feature is

off. Green indicator lights in both the sending and
receiving eyes will 

glow steadily if wiring

connections and alignment are correct.

If the indicator light is

off in the receiving eye (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
horizontally until the green indicator light 

glows

with a steady light. 

• When indicator lights are 

glowing steadily in both

units, tighten the wing nut in the receiving eye unit.

• 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 7. Finger tighten the wing nut on the
receiving eye to allow for final adjustment.
Securely tighten the 

sending eye wing nut.

• Insert the wire connector into each

sensor and push until you hear a
click (Figure 6). The white tab on
the sensor should be flush with the
back of the connector.

23

Push connector in
until you hear a click

Tab should be
flush with back
of connector

Wire Connector

White Tab

Safety Sensor

1. If the 

sending eye indicator light does not glow

steadily after installation, check for:

• Electric power to the opener.

• A short in the white or white/black wires. These

can occur under staples or at screw terminal
connections.

• Incorrect wiring between sensors and opener.

• An open wire (wire break).

2. If the sending eye indicator light glows steadily but

the receiving eye indicator light doesn't:

• Check alignment.

• Check for an open wire to the receiving eye.

1/4-20 x 1-1/2"

Hex Bolt

Wing Nut