ISM Installation, Programming & Operation Guide
Page 12
Sprinkler Timer Programming Chart
Before programming your ISM, fill out the
Programming Chart included with your timer.
Then program the timer in the order shown
on the Programming Checklist. Page 14
shows a completed programming chart.
1. Select the watering day cycle you wish to
use, and circle the watering days within
the cycle. In the example shown for
program A, the operator has chosen a 7-
day watering cycle and circled M, W, and
F as watering days. This means that
program A will water every Monday,
Wednesday, and Friday.
2. For program B, the operator selected a 3-
day watering cycle. With these selections,
program B will water once, skip two days,
and then water again on the first day of a
new three day cycle.
3. You may also choose three special wate-
ring day cycles that do not require you to
select watering days. These cycles are:
• Ev
= Waters only on even-numbered
days of the month.
• Od
= Waters only on odd-numbered
days of the month.
• Od31
= Waters only on odd-numbered
days of the month, but not on the 31st of
any month or on February 29. (This wate-
ring day cycle complies with special ordi-
nances in some water-restricted areas).
4. In the Start Times box for program A,
write the time you want the program to
begin watering. You may assign up to four
watering start times to each program. If
you want the program to water only once
each watering day, enter only one start
time. Enter other start times only if you
want to repeat the entire program more
than once each watering day.
5. Enter the watering start time for program
B (if any). In the example, Program A
begins watering at 7 a.m. Program B
begins watering twice each watering day,
once at 5 a.m. and again at 3 p.m.