ISM Installation, Programming & Operation Guide
Page 35
Connect Main Power Wires
The ISM sprinkler timer has an external
transformer that reduces standard supply
voltage to 24 VAC to operate the remote
valves connected to the timer.
CAUTION: To avoid electrical shock,
DO NOT plug in the transformer until
you have connected it to the timer.
To connect the transformer cable to the
terminal strip in the timer cabinet:
1. Make sure the transformer is NOT plugged
in.
2. Plug the snap-on connector on the
transformer cable into the “24VAC”
connection point on the timer terminal
strip.
3. Plug the transformer into any standard,
three-prong grounded wall plug.
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