Craftsman 139.53920D owner manual Aligning the Safety Reversing Sensors

MOUNTING AND WIRING THE SAFETY

REVERSING SENSORS

,Slide a t/4"-20xl/2" carriage bolt head into the slot on each senso_ Use wing nuts to fasten sensors to brackets, with lenses pointing toward each other across the door Be sure the fens 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 1/4" (6 ram) of insulation from each set of wires.. Separate white and white/black wires sufficiently to connect to the terminal screws: white to 2 and whitetb]ack to 3 (Figure 6).

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 amber indicator light will glow regardless of alignment or obstruction If the green indicator light in the receiving eye is off, dim, or flickering (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'sbeam, When

the green indicator light glows steadily, tighten the wing nut,

Figure 6

..

invisible Lighl Beam Safety Reversing Protection Area

Safety Reversing Sensor

Figure 5

Wing Nut

TROUBLESHOOTING THE SAFETY REVERSING SENSORS

I. 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. See page 20..

Connect Wire _o

Termtnat Screws

Bell Wire			/
Boor	Control		Sensor
Connec_Jons_			Connections
(dolled	line)	_'_'_,*.	. "_
		OPENER TERMINAL	SCREWS

Sensor

22