Allstar Products Group LT 50 owner manual Photoelectric Obstruction Test

Confirm trolley close position 9” to 10” between the inside face of the door and

9”to

the point where the door arm connects to the trolley (see illustration). If

adjustment of the close trolley position is necessary, activate the opener and

move the trolley 12” to 18” to provide access to the “Limit Stop” devices

(mounted on the chain). Move the limit stop to establish the correct trolley

close position as above. Relocation of “Limit Stop” toward the door increases

down travel. Relocation of the limit stop away from the door reduces down

travel. Note that each chain link provides 1/2” adjustment of trolley travel.

Door

Cushion Arm

Bracket

Assembly

Test Procedure

Place an object 6” x 12” on the floor (as illustrated)

progressively on foot from the left side of the door; center

of the door and one foot from the right side of the door.

The object must prevent an open door from closing in any

other mode other than constant pressure on the wall button.

The object should also cause a closing door stop and

reverse to the open position. If it doesn’t, the Safe Finish

photoelectric system must be adjusted lower and the test

repeated until the door responds properly to the 6” object.

If adjustments are needed, refer to Step 13.

If the unit still will not respond and fails this obstruction

12”

sensing beam test, the door may cause severe injury or