Chamberlain 248730 User Manual download pdf (Page 23)

Installation

STEP 13 Install the Protector System

Be sure power is NOT connected to the garage door opener BEFORE installing the safetyreversing

sensor.

To prevent SERIOUS INJURY or DEATH from closing garage door:

• Correctly connect and align the safety reversing sensor. This required safetydevice MUST NOT be

disabled.

• Install the safetyreversing sensor so beam is NO HIGHER than 6" (15 cm) above garage floor.

The safety reversing sensor must be connected and aligned correctly before the garage door

opener will move in the down direction.

IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR

When properly connected and aligned,the sensor will detect an obstacle in the path of its electronic

beam.The sending eye (with an amber indicator light) transmitsan invisible light beam to the receiving

eye (with a green\indicator light). If an obstruction breaksthe light beam while the door is closing, the

door will stop and reverse to full open position, and the opener lightswill flash 10 times.

The unitsmust be installed inside the garage so thatthe sending and receiving eyes face each other

across the door,no more than 6" (15 cm) above the floor. Either can be installed on the leftor right of the

door as long as the sun never shines directly into the receiving eye lens.

The mounting bracketsare designed to clip onto the trackof sectional garage doors without additional

hardware.

If it is necessary to mount the units on the wall, the bracketsmustbe securely fastened to a solid surface

such as the wall framing. Extension brackets(see accessories) are available if needed. If installing in

masonry construction, add a piece of wood at each location to avoid drilling extra holes in masonry if

repositioning is necessary.

The invisible light beam path mustbe unobstructed. No part of the garage door (or door tracks,springs,

hinges,rollers or other hardware) may interrupt the beam while the door is closing.

Safety Reversing Sensor

6" (15 cm) max. above floor

Invisible Light Beam

Protection Area

Facing the door from inside the garage

HARDWARE

Carriage Bolt

1/4"-20x1/2"

Wing Nut

1/4"-20

The safety reversing sensors can be attached to the door track, the wall, or the floor. The sensors should

be no more than 6 inches (15 cm) above the floor. Ifthe door track will not support the sensor bracket a

wall installation is recommended. Choose one ofthe following installations.

OPTION A DOORTRACKINSTALLATION

1. Slide the curved armsof the sensor bracket around the edge of the door track. Snap into place

so that the sensor bracket is flush againstthe track.

2. Slide the carriage bolt into the sloton each sensor.

3. Insert the bolt through the hole in the sensor bracket and attach with the wing nut. The lenses

on both sensors should point toward each other. Make sure the lens is not obstructed by the

sensor bracket.

No more

than 6 inches

(15 cm)

Carriage Bolt

1/4"-20x1/2"

Wing Nut

1/4"-20

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Chamberlain 248730 User Manual Page 23

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