Irritrol IBOC-Plus - Manual (Page 8)

6
HOW THE SENSOR FEATURE WORKS
The IBOC Plus is equipped to operate with an optional rain sensing
device, commonly called a “Rain Switch,” to prevent automatic
watering during rain.
The rain switch is a simple device, typically installed on a roof
overhang or stationary structure exposed to rainfall and full sun, and
shielded from irrigation spray. The rain switch wiring is connected to
the sensor terminals provided on the controller terminal board.
Rain sensor operation is selectable by program, enabling sensor control
to be allocated to specific watering programs as needed.
When rain occurs, the switch senses the moisture and causes the
controller to terminate all output to the field. The electronic
programming portion of the controller is isolated from the rain sensor
switch, and continues to operate as programmed. When rain stops and
the rain switch returns to its normal state, field output is restored,
enabling watering to resume as scheduled.
CONTROL OPTIONS
This dial position provides access to the following features: Program
Erase, Language Option Select and Sensor Enable.
PROGRAM ERASE
Use this feature to clear the memory of a selected program and reset it
to default values (no active days, start times or station run times and
100% water budgeting).
To erase and reset a program:
1. Turn the function dial to the
OPTIONS
position.
2 Select the program to be reset by pressing
PROGRAM
button
A
,
B
or
C
.
3. Press the + /
ON
button. A prompt will be displayed confirming
program erasure.
4. Repeat steps 2 and 3 for remaining programs as required.
5. Return the function dial to the
AUTO RUN
position if finished, or press
the
NEXT
button to continue.
General Information