Chamberlain HD200DM Figure, Figure, SENSORS, REVERSING SENSORS, MOUNTING AND WIRING THE SAFETY, TROUBLESHOOTING THE SAFETY REVERSING, ALIGNING THE SAFETY REVERSING SENSORS

MOUNTING AND WIRING THE SAFETY		Figure 5
REVERSING SENSORS
•	Slide a 1/4"-20x1/2" carriage bolt head into the slot on	Wing Nut
		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
	extension (Figure 5).	Carriage Bolt
•	Finger tighten the wing nuts.	1/4"-20x1/2"
		Lens

•Run the wires from both sensors to the opener. Use

	insulated staples to secure wire to wall and ceiling.	TROUBLESHOOTING THE SAFETY REVERSING
• Strip 7/16" (11 mm) of insulation from each set of wires.
		SENSORS
	Separate white and white/black wires sufficiently to	1. If the sending eye indicator light does not glow steadily
	connect to the opener quick-connect terminals. Twist
		after installation, check for:
	like colored wires together. Insert wires into quick-
		• Electric power to the opener.
	connect holes: white to white and white/black to grey
		• A short in the white or white/black wires. These can
	(Figure 6).
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.
		receiving eye indicator light doesn't:
The sending eye amber indicator light will glow regardless
		• Check alignment.
of alignment or obstruction. If the green indicator light in
		• Check for an open wire to the receiving eye.
the receiving eye is off, dim, or flickering (and the invisible
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. See page 20.

Figure 6

Connect Wire to Quick-Connect Terminals

Bell Wire	Finished
	Ceiling

Bell Wire

1. Strip wire 7/16"

(11 mm)

7/16" (11 mm)

2. Twist like colored

wires together

3. To insert or release wire, push in tab with screwdriver tip

Invisible Light Beam	Safety Reversing	Red White Grey
Protection Area	Sensor	Quick-Connect Terminals
Safety Reversing Sensor

22