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A watering program requires three basic instructions to
operate automatically:
• What days to water –called watering days
• When to water – called a program start time
• How long to water – called station run time
The following example illustrates how a typical watering
program could be set for the sprinkler system shown on
the previous page.
Example: The program start time is set for 5:00
AM. Lawn
stations 1 and 2 each have a run time of 10 minutes and
lawn station 4 is set to run for 20 minutes. Note that sta-
tions 3 and 5 water shrubs and flowers and have been
excluded from this program. (These stations will be set
to operate on separate programs).
As shown in the watering program diagram, at 5:00
AM
the controller starts the program watering cycle. Station
1 sprinklers run for 10 minutes and shut off. Station 2
sprinklers turn on, run for 10 minutes and shut off. The
controller skips station 3 and turns on station 4, which
runs for 20 minutes and shuts off. Station 5 is skipped
and the watering cycle ends at 5:40
AM.
As you can see from this example, only one program
start time was needed to operate three different stations.
Because of variations in plant watering needs, the
GreenKeeper 212 provides three separate programs.
The programs, called A, B and C, are completely inde-
pendent of one another – like having three timers in one
housing.
Using more than one program for example, would enable
lawn zones to be watered every day on program A,
shrub zones to run on on Monday, Wednesday and Fri-
day on program B and drip irrigation to soak the flower
beds every three days on program C.
Although the GreenKeeper 212 offers the multiple pro-
gram feature, you may want to have all zones on one
program if it meets your needs. The other programs can
remain turned off until you need to use them.
Watering Program Basics
7
3
12
9
6
3
12
9
6
3
12
9
6
Station 1
Program
Starts - 5:00
AM
Program
Ends- 5:40
AM
Station 2
Station 4
Watering Program Diagram