Craftsman 139.53664SRT2 Garage Door Opener User Manual


 
Center each sensor unit in a "C" wrap with lenses
pointing toward each other across the door (see
Figure 6).
Secure sensors with the hardware shown. Finger
tighten the wing nut on the receiving eye to allow
for final adjustment. Securely tighten the sending
eye wing nut.
Run the 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.
Aligning the Safety Sensors
Plug in the opener. Green indicator lights in both
the sending and receiving eyes will g/owsteadilyif
wiring connections and alignment are correct.
The sending eye indicator light will glow regardless
of alignment or obstruction. If the indicator light is
off, dim, or flickering in the receiving eye (and the
invisible light beam path is not obstructed),
alignment is required,
Loosen the sendingeye wing nut and readjust,
aiming directly at the receiving eye. Lock in place.
Loosen the receiving eye wing nut and adjust
sensor vertically and/or horizontally untilit receives
the sender's beam. When the green indicator light
glows steadily, tighten the wing nut.
Figure 6
IndLcator
Ught
1/4-20 X 1-1/2'
HexBolt
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 steadilybut
the receiving eye indicator light doesn't:
Check alignment.
Check for an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign
either sensor.
NOTE: When the invisible beam path is obstructed or
misa/igned while the door is closing, the door will
reverse. If the door is already open, it will not close.
The opener lights will flash 10 times. (_ifbulbs are not
installed, 10 clicks are audible.) See page 21.
Hardware Shown Actual Size
1/4-20x1-1/2'
Figure 7
Connect Wire to
Opener Terminals
Door Control Sensor
Corlnections_ ConnocUorls
(dotted line) --- /
[]
OPENER TERMINAL SCREWS
23