LiftMaster PROTECTOR SYSTEM CPS-UN4 Mode D'emploi page 3

INSTALLATION
CONDUIT CONNECTIONS
1. Disconnect power to the operator.
2. Use a liquid tight fi tting (1/2" [1.3 cm] trade size) with sealing washer to connect to sensors. The sensors are provided with 36"
(91.4 cm) long leads. LiftMaster recommends the use of a liquid tight junction box near each sensor to make the connection to the
sensor leads. Use rigid or fl exible liquid tight conduit (depending on local codes) from junction boxes to operator. IMPORTANT: Use a
minimum size 20 ga. copper wire for connection between the sensors and the operator.
Liquid Tight
Junction Box
Liquid Tight
Liquid Tight
Conduit
Conduit
Liquid
Tight
d Tight Junction
Box
tion Box
Photoelectric Sensor
Sensor Beam
6" (15 cm) max. above the fl oor
Photoelectric Sensor Beam
27.5" (69.8 cm) maximum
above grade
DOOR
Liquid Tight
Liquid Tight
Junction Box
Junction Box
Invisible Light Beam
Invisible Light Beam
Protection Area
Protection Area
GATE
Liquid Tight Conduit
3
Connect sensor wire to operator
See
(refer to Wiring section)
Con
Photoelectric Sensor Beam
Sensor Beam
6" (15 cm) max. above
6" (15 cm) max. ab
the fl oor
Connect sensor wire to operator
(refer to Wiring section)