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Installation Instructions
Rainfall Adjustment
Prior to installing the RainSensor, check the
current setting on the Rainfall Adjustment
Cap. The RainSensor can be adjusted to
detect average rainfall amounts of 1/8", 1/4",
1/2", 3/4" or 1" before suspending watering.
To adjust, turn the cap from the current set-
ting and engage the stationary pins with the
desired slot position in the cap. Be sure to
align the slot and pin properly as this adjust-
ment does not require excessive force. See Figure 2.
Note: Avoid using the 1/8" setting in high-humidity conditions.
Changing the RainSensor Configuration
The RainSensor is designed to work
with Normally Closed or Normally
Open sensor circuits. If connecting
the RainSensor to the controller's
sensor terminals, first verify which
type of sensor circuit is required by
referring to the controller user guide.
The RainSensor is set for Normally
Closed sensor operation. If Normally
Open operation is required; i.e., for
the Toro ECx
TM
controllers, configure the RainSensor
as follows:
1. Refer to Figure 3. Remove the
bottom cover by gently pressing
in the lower opposing tabs using
a small flat-blade screwdriver.
Carefully slide the switch board assembly out.
2. Carefully pull the wire connector from the left tab of the switch
and attach it to the center tab. Leave the right wire connected.
3. Reassemble the RainSensor making sure the switch board is
properly inserted and the strain-relief knot in the RainSensor
control wire is inside of the housing.
Mounting the RainSensor
Select a mounting site for the RainSensor as close to the controller
as possible. If the 25' RainSensor control wire will not reach the
controller, it can be extended up to 100' using 18 AWG outdoor-
rated wire. The installation site must provide unobstructed rainfall
and sunlight conditions similar to those of the landscape being
watered. Make sure the RainSensor will not be in contact with spray
from the sprinklers or runoff from the roof.
and GreenKeeper
Figure 2
Figure 3
Normally Closed
Normally Open
®
"
1/4
"
3/4
"
1/8
"
1/2
"
1
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