Craftsman 139.53675SRT - Manual (Page 23)

» Center each sensor unit in a 'C* wrap with tenses
pointing toward each other across the door (see
Hgure 6).
• Secure sensors with the hardware shown. Roger
tighten the wing nut on the receiving eye to aliow
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 waJ! and
ceiling,
«Strip 1/4“ of insulation from each set of wires.
Separate white and whiie/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 glow steadily il
wiring connections and alignment are correct
The sending eye indicator light will giow 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 sending eye 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 untii it receives
the sender^s beam. When the green indicator light
glows steadily, tighten the wing nut.
Hardware Shown Actual Size
l/4-20xM/a* _
He* Soft
Rgure 6
'C'Wrap
¡mficator
Ugh!
1/4-23x1-1/2*
Hex Boil
Trouble Shooting
1. if the sending eye indicator light does not glow
steadily after installation, check for
• Bectric 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,
3. If the receiving eye indicator light is dim, realign
either sensor.
NOTE: When the invisible beam path is obstructed or
misaligned while the door is closing, the door wilt
reverse. If the door is already open, it will not dose.
The opener fights will flash 10 times. (Ifbutbs are not
instalied, 10 dicks are audible.) See page 21.
Sonspr
InvistbS« Light Beam
Protection Afea
Sensor
23