Connecting A Pump Start Relay; Connecting The Transformer - Toro TMC-212 User Manual

373-0319 TCM 212 Doc2 12/20/04

Connecting a Pump Start Relay

CAUTION: Never connect an auxiliary pump
starter directly to the controller. A 24 VAC relay,
rated at 0.30A maximum current draw, must be used
to connect the controller to the pump starter circuit.
1. Route a wire pair from the pump start relay into the
controller housing.
2. Connect one wire to the valve common COM (8).
Connect the remaining wire to the PUMP/MV (9) as
shown below.
1
8
9
24 VAC Pump Start Relay
CAUTION: If the pump does not have an auto-
matic pressure control switch, prevent pump damage
due to "dead-heading," by connecting a jumper wire
from any unused station terminal to a station terminal
with a valve wire connected.
Note: Refer to "Pump Control and Well Recovery" section
8 on page 28 for important pump circuit control information.
12:30 PM Page 8
2 3 4 5 6 7 8 9
Jumper Wire
Valve Common Wire
Connecting the Plug-in Transformer
CAUTION: Do not plug the transformer into an
electrical outlet until all of the wiring procedures have
been completed.
1. Route the cable from the transformer (13) through the
small opening provided in the base of the housing.
Wrap the cable around and through the restraining post
as shown below.
10
9V
2. Connect one transformer cable wire to each terminal
labeled 24 VAC (10). The wires can be connected to
either terminal.
Note: The display will begin flashing 12:00 a.m. Press
any button to stop the display from flashing.
13