LiftMaster 772E Mode D'emploi page 2

!
WARNING
Non-compliance with the checking and adjustment requirements for the safety reverse
system can result in a closing door causing serious, life-threatening injuries. An appropriate
test should be carried out and repeated on a monthly basis. If necessary, the sensors need
to be readjusted.
FUNCTION
1
The 772E is a photocell, consisting of a transmitter (TX) and a receiver (RX), with a special
evaluation and can be used only with appropriate Chamberlain products (garage door openers and/
or swing and sliding door operators). The transmitter (TX) sends an infrared beam to the receiver
(RX). An interruption of the infrared beam is detected and transmitted to the controller.
A perfectly functioning photocell serves only to identify persons or objects in the door area
and does not ensure absolute safety from other hazards arising from the door movement. If
necessary, take additional protective measures.
INSTALLATION OF GARAGE DOORS
2
(Sectional doors, overhead doors)
For the protection of young children, the photocell should not be installed higher than
200 mm - 250 mm above the garage floor. The sensors have to be fastened securely to a fixed
component (e.g. post, wall). Make sure that the infrared beam is not interrupted during the closing
process later by parts of the door (e.g. rails, rollers, springs, etc.). If this is not ensured, upright co-
lumns (optional accessories) should be used (Fig. 8). Transmitter and receiver have to be attached
parallel to the closed door at a height of 200 - max. 250 mm and precisely aligned to each other
(Fig. 4+5). Operation: When the infrared beam is interrupted during the closing process, the
door stops and reverses completely. Note: When using a BAS300 for basculant overhead doors,
a pair of photocells must be installed for each door inside (for closing) and outside (for opening) of
the garage, because its control system allows the connection of two photocells (Fig. e). For more
details, please refer to the manual of the CB3 controller.
INSTALLATION OF SWING AND SLIDING DOORS
3
For the protection of young children, the photocell should not be installed higher than 200
mm - 250 mm above the entrance.
The sensors must be secured on a fixed component (door pillar) and outside of the movement
range of the door wings (swing doors). If this is not ensured, upright columns (optional accessories)
should be used (Fig. 8). Transmitter and receiver have to be attached parallel to the closed door at
a height of 200 - max. 250 mm and precisely aligned to each other (Fig. 3a).
Note: Controllers of the swing and sliding doors allow the connection of multiple pairs of photocells.
Operation: When the infrared beam is interrupted during the closing process, the door stops and
reverses completely. When the infrared beam is interrupted during the opening process, the door
stops. Any subsequent functions are dependent on the type of controller used for the swing or
sliding door.
2
en