Test Safety Reversal; Align And Test Photo Eyes - Genie M-4500 Owner's Manual

8-19. TEST SAFETY REVERSAL

The safety reversal function of your opener is an extremely
important feature of your opener. Testing this function
ensures the correct operation of your opener and door.
The reversal system test should be performed:
I Once per month.
I Anytime the travel or force limits are reset or changed.
Once the adjustments have been set and the door has been
run up and down twice to "learn" the new settings, you
must test the reversal system for proper operation.
I Place a 1-1/2" high rigid object (or a 2x4 laid flat) on the
floor directly in the path of the door. See Fig. 44.
I Start the door in the downward direction and watch
what happens.
I When door contacts the object (or 2x4), it should stop,
reverse, and automatically return to the fully opened
position.
I If the door does not reverse, reset the down travel limit so
that the door travels slightly further down in the closed
direction. Then, retest the unit as described above.
I If the door still does not reverse, disconnect your opener
and call a service person.

8-20. ALIGN AND TEST PHOTO EYES

ALIGNMENT:
Photo eyes maintain an invisible, unbroken beam between
each unit. The eyes must be properly aligned for the system
to function and provide the protection it was designed for.
Follow these steps to insure proper alignment:
I When photo eyes are connected to the powerhead and
the power is on, the green light on the transmitter photo
eye will illuminate. When the eyes are aligned, the red
light on the receiver eye will illuminate.
I Loosen the wing nut on each photo eye and rotate eye in
holder as needed until eyes are aligned and the light on
each photo eye is illuminated. See Figs. 45 and 46.
I Tighten the wing nut firmly by hand on each assembly to
secure each photo eye in position.
SAFETY TEST:
Photo eyes installed on opposite sides of your door opening
are intended to detect a person or object in the path of the
door and prevent the door from moving downward. The
following steps will determine if the system is functioning
properly:
I Open door using the opener's transmitter or wall control.
I Place a box or other object in the path of the door so it
breaks the photo eye beam. See Fig. 46A. Red indicator
light on receiver should go out.
I Press and release the wall control button. The door should
not move in the down direction. LED #6 on the opener
will flash. If this does not happen, disconnect opener and
call for service.
I To reset opener, remove the obstruction and operate the
door normally.
I If photo eyes are not aligned or are damaged, door
can only be closed by pressing and holding wall control
button until door is fully closed.
20
Fig. 44
1-1/2" high rigid object
2x4 Board Laid Flat
Fig. 45
Rotation about
Vertical Axis
Clear Path between Photo Eyes
Fig. 46
Infrared Beam
Photo Eye Receiver
(Red Indicator Light on)
Object directly in Path between Photo Eyes
Fig. 46A
Obstruction
Breaking
Infrared Beam
Photo Eye Receiver
(Red Indicator Light Off)
Rotation about
Horizontal Axis
Photo Eye Transmitter
(Green Indicator Light on)
Photo Eye Transmitter
(Green Indicator Light On)