Chamberlain 3595 Figure, Figure, SENSORS, SENSORS, TROUBLESHOOTING THE SAFETY REVERSING, ALIGNING THE SAFETY REVERSING SENSORS, MOUNTING AND WIRING THE SAFETY REVERSING

MOUNTING AND WIRING THE SAFETY REVERSING		Figure 4
SENSORS			Wing Nut
• Slide a 1/4"-20x1/2" carriage bolt head into the slot on
		1/4"-20
	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	Carriage Bolt
	extension (Figure 4).
		1/4"-20x1/2"
•	Finger tighten the wing nuts.		Lens
•	Run the wires from both sensors to the opener. Use	TROUBLESHOOTING THE SAFETY REVERSING
	insulated staples to secure wire to wall and ceiling.
		SENSORS
•	Strip 7/16" (11 mm) of insulation from each set of wires.
		1. If the sending eye indicator light does not glow steadily
	Separate white and white/black wires sufficiently to
		after installation, check for:
	connect to the opener quick-connect terminals. Twist like
		• Electric power to the opener.
	colored wires together. Insert wires into quick-connect
		• A short in the white or white/black wires. These can
	holes: white to white and white/black to grey (Figure 5).
ALIGNING THE SAFETY REVERSING SENSORS		occur at staples, or at opener connections.
		• Incorrect wiring between sensors and opener.
•	Plug in the opener. The indicator lights in both the
		• A broken wire.
	sending and receiving eyes will glow steadily if wiring
		2. If the sending eye indicator light glows steadily but the
	connections and alignment are correct.
The sending eye amber indicator light will glow regardless		receiving eye indicator light doesn't:
		• Check alignment.
of alignment or obstruction. If the green indicator light in
the receiving eye is off, dim, or flickering (and the invisible		• Check for an open wire to the receiving eye.
light beam path is not obstructed), alignment is required.		3. If the receiving eye indicator light is dim, realign either
•	Loosen the sending eye wing nut and readjust, aiming
		sensor.
	directly at the receiving eye. Lock in place.	NOTE: When the invisible beam path is obstructed or
•	Loosen the receiving eye wing nut and adjust sensor
		misaligned while the door is closing, the door will reverse.
	until it receives the sender’s beam. When the green	If the door is already open, it will not close. The opener
	indicator light glows steadily, tighten the wing nut.	lights will blink 10 times. (If bulbs are not installed, 10
		clicks can be heard.) See page 15 .

	Connect Wire to
Figure 5	Opener Quick-Connect Terminals
Bell Wire	Finished
	Ceiling
	1.	Strip wire 7/16"
	Bell Wire	(11 mm)	7/16"
			(11mm)
	2.	Twist like colored
		wires together
	3.	Insert into
		appropriate terminals

Red White Grey

Quick-Connect Terminals

Safety Reversing Sensor

	Invisible Light Beam
Safety Reversing Sensor	Protection Area

17