Craftsman 139.53939D Manual Del Propietário página 22

MOUNTINGAND WIRING THE SAFETYREVERSING SENSORS
• Slide a 1/4"-20xl/2" carriage bolt head into the slot on each
sensor. Use wing nuts to fasten sensors to brackets, with lenses
pointing toward each other across the door. Be sure the lens is
not obstructed by a bracket extension (Figure 5).
• Finger tighten the wing nuts.
• Run the wires from both sensors to the opener. Use insulated
staples to secure wire to wall and ceiling.
• Strip 7/16" (11 mm) of insulation from each set of wires.
Separatewhite and white/black wires sufficiently to connect to
the opener quick-connect terminals. Twist like colored wires
together. Insert wires into quick-connect holes: white to white
and white/black to grey (Figure 6).
ALIGNINGTHE SAFETYREVERSING SENSORS
• Plug in the opener. The indicator lights in both the sending and
receiving eyeswill glow steadily if wiring connections and
alignment are correct.
The sending eye amber indicator light will glow regardless of
alignment or obstruction. If the green indicator light in the
receiving eyeis off, dim, or flickering (and the invisible light beam
path is not obstructed), alignment is required.
• Loosen the sending eyewing nut and readjust, aiming directly at
the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust sensor until it
receives the sender's beam. When the green indicator light
glows steadily, tighten the wing nut.
Figure 5
Wing Nut
Carriage Bolt
1/4"-20xl/2"
TROUBLESHOOTING T HE SAFETYREVERSING SENSORS
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 at
staples, or at opener connections.
• Incorrect wiring between sensors and opener.
• A broken wire.
2. If the sending eye indicator light glows steadily but the
receiving eye indicator light doesn't:
• Checkalignment.
• Checkfor an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign either sensor.
NOTE: Whenthe invisible beam path is obstructed or misaligned
while the door is closing, the door will reverse. If the door is
already open, it will not close. The opener lights will blink 10 times.
See page 20.
Figure6
Bell Wire Finished
-- Ceiling
Connect Wire to
Quick-Connect Terminals
Bell Wire
\
1. Strip wire 7/16"
(11 mm)
17/16"(11 ram) I
2. Twist like colored
wires together
3. To insert or release
wire, push in tab with
screwdriver tip
Safety
Reversing
Sensor
InvisibleLightBeam
Protection Area
Safety
Reversing
Sensor
White Grey
Quick-Connect Terminals
22