ADJUSTMENTS AND OPERATION
When the Rain Sensor activates due to sufficient rainfall (after rainfall
quantities of 1/8” through 1/2” or more), the sprinkler system will become
inactive until the moisture-absorbent discs inside the Rain Sensor have
dried out . To adjust to the desired quantity of rainfall, rotate the Rainfall
Adjustment Cap on the rain sensor housing to the range desired (See Fig . 3) .
FIGURE 3:
The time that it takes the rain sensor to reset for normal sprinkler operation
after the rain has stopped is determined by weather conditions (wind, sunlight,
humidity, etc .) . These conditions will determine how fast the hygroscopic
discs will dry out, the same conditions your soil experiences .
Note that there is an adjustment capability on
the rain sensor that will slow down the reset
rate . By turning the “Vent Adjustment Tab”
(See Figure 4) to completely or partially cover
the ventilation holes, the hygroscopic discs
will dry more slowly . This adjustment can
compensate for an “overly sunny” installation
location or peculiar soil conditions .
Experimenting with the Vent Adjustment Tab
will best determine the ideal vent setting .
BYPASSING THE RAIN SENSOR
The Universal Rain Sensor can be temporarily bypassed or deactivated
using any one of the following methods:
• Use the controller’s sensor bypass switch (if equipped) .
• Temporarily disconnect the Universal Rain Sensor from the controller’s
wiring .
NOTE:
Always disconnect power to the controller
BEFORE
performing
any wiring tasks.
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10
Adjust the Rainfall Adjustment
Cap to the amount of rainfall
you wish to trigger the rain
sensor to suspend watering .
Low end= 1/8", high end=1/2"
HIGH
END
LOW
END
FIGURE 4
