Conduit Connections - Chamberlain CPS-U Manual

INSTALL MODEL CPS-UN4

CONDUIT CONNECTIONS

Be sure power to the operator is disconnected.
1. Use a liquid tight fi tting (1/2" trade size) with sealing washer to connect to sensors. The sensors are provided with 36" long leads.
We recommend 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.
2. Connect the sensor wires to the operator (refer to Wiring Connections, page 6).
3. Connect power to the operator.
4. Align the photoelectric sensors so the green LED on the sending sensor and the Yellow LED on the receiving sensor glow steadily.
Liquid Tight
Liquid Tight
Conduit
Conduit
Liquid
Tight
d Tight Junction
tion Box Box
Photoelectric Sensor
Sensor Beam
6" (15 cm) max. above the fl oor
Liquid Tight
Liquid Tight
Junction Box
Junction Box
Invisible Light Beam
Invisible Light Beam
Protection Area
Protection Area
GATE
GARAGE DOOR
Connect sensor wire to
See
operator (refer to Wire
Con Connections, page 6)
Photoelectric Sensor
Sensor Beam
6" (15 cm) max.
6" (15 cm) max. ab
above the fl oor
Liquid Tight
Junction Box
5
Photoelectric Sensor
27.5" (69.8 cm) max.
above the fl oor
Connect sensor wire to
operator (refer to Wire
Connections, page 6)
Liquid Tight
Conduit