15
Pump Start Relay Wiring
NOTE:
Complete this section
only
if your system requires
a pump start relay.
The MV terminal on the flip strip can be used to connect a
pump start relay. Connect one lead of the 24VAC pump
start relay to the MV terminal and the other lead to the com-
mon wire, as shown in the illustration.
CAUTION:
To prevent pump damage when using a pump
start relay, use a jumper to connect unused stations to a
station that is being used. If program information is lost
during a prolonged power outage, the ESP-Si will auto-
matically run a “default” program when power is restored.
This program runs all stations for 10 minutes. If
unused stations are not jumpered, the pump will
operate with no flow (dead-head) during this
10-minute period. Dead-heading may cause the pump to
overheat or burn out.
Install Battery
The ESP-Si controller is factory-supplied with a 3-Volt
lithium coin cell backup battery, which is wrapped in a pro-
tective insulator strip in the battery drawer. This battery is
designed to maintain program information for several days
without power.
If electrical power to the ESP-Si remains uninterrupted, the
lithium coin cell will last well over one year. However, long
or frequent power interruptions will cause faster battery use.
To activate this battery, remove the lower face panel on
the controller. Open the battery drawer and remove the
battery. Remove the plastic insulator strip from the bat-
tery, and re-install it in the drawer. Be sure the positive
(“+”) side of the battery is facing down in the drawer.
Close the drawer, and reinstall the lower face panel. See
page 12 for complete instructions.
Technical Support:1-800-RAIN BIRD
Install Transformer
CAUTION:
DO NOT plug the external transformer into
an electrical outlet until all other connections have been
made. In addition, connect the wires from the transformer
to the ESP-Si flip strip BEFORE plugging in the trans-
former.
Œ
Connect the green ground wire (which is the longest wire)
to the ground screw located just below and to the right of
the lower wall mounting screw.
•
Connect one pre-stripped transformer wire to each of the
flip strip terminals labeled 24VAC. Connect either wire to
either terminal; polarity of these wires is not important.
This Manual: http://www.manuallib.com/file/2721363