Sears CRAFTSMAN 139.53640SRT - Manual (Page 23)

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.
Safety Sensor
Figure 6
White Tab
Tab shouid be
flush with back
of connector
Wire Connector
Push connector in
until you hear a dick
Figure 7
Bell Wire
'Sensor
Invisible Light Beam
Protection Area
• 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 g/owsfead/7y 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/or
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.
Trouble Shooting
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.
Hardware Shown Actual Size
1/4-20x1-1/2"
Hex Boli
23