Mounting And Wiring The Safety Reversing Sensors; Aligning The Safety Reversing Sensors; Troubleshooting The Safety Reversing Sensors - Craftsman 139.536481DM Manual Del Propietário

Mounting and Wiring the Safety Reversing Sensors

• Slide a 1/4"-20x1/2" 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 6).
• 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 1/4" (6 mm) of insulation from each set of wires. Separate
white and white/black wires suffi ciently to connect to the
terminal screws: white to 2 and white/black to 3 (Figure 7).

ALIGNING THE SAFETY REVERSING SENSORS

• Plug in the opener. The indicator lights in both the sending and
receiving eyes will glow steadily if wiring connections and
alignment are correct.
The sending eye green indicator light will glow regardless of
alignment or obstruction. If the green indicator light in the
receiving eye is off, dim, or fl ickering (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 until it
receives the sender's beam. When the green indicator light
glows steadily, tighten the wing nut.
Figure 7
Bell Wire
Safety Reversing Sensor
Safety Reversing Sensor
Invisible Light Beam
Protection Area
Figure 6
"C" Wrap
Indicator
Light
Hex Bolt
1/4-20 x 1-1/2"

TROUBLESHOOTING THE SAFETY REVERSING 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:
• 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 will reverse. If the door is
already open, it will not close. The opener lights will blink 10 times.
(If bulbs are not installed, 10 clicks can be heard.) See page 20.
Bell Wire
22
Wing
Nut
Sensor
with Wire
Connect Wire to
Terminal Screws
Sensor
Door Control
Connections
Connections
(dotted line)
OPENER TERMINAL SCREWS