Rain Bird ESP-12LX+, Installation, Programming, And Operation Manual, Page: 63 / 73

60 ESP-LX+ & LXi+ Installation, Programming, & Operation Guide
ESP-LXi+ (Indoor-Only Controller)
The ESP-LXi+ controller (117 VAC model only) has an external
transformer that reduces standard supply voltage to 24 VAC to
operate the valves connected to the controller.
You will need to connect the three wires from the transformer to
the vertical terminal strip in the controller cabinet.
CAUTION : To avoid electrical shock, do NOT plug in the
transformer until you have connected its cable to the
controller. If the transformer is plugged in while the
cable is not attached, any contact between the three
forked connectors will blow the transformer’s internal
fuse. A blown transformer fuse cannot be repaired.
All electrical connections and wiring runs must be
made according to local building codes.
➊
Make sure the transformer is NOT plugged in.
➋
Feed the three forked transformer wires through the
bottom left hole in the cabinet. Then pull about 12 inches
of the cable up into the controller cabinet.
➌
Tie a loose overhand knot in the cable just inside the
controller to prevent any strain on the connector terminals.