backlash in the clutch and gears that can
delay initial rotation of the time dial by
up to an hour.
CAUTION: Time dial rotates free/y only
in counterclockwise direction. DO NOT
FORCE DIAL CLOCK WISE.
Setting current time and start times
Set the start time
The tripper gear lets you set your controller to begin
watering at the time of day you desire every hour on the
half hour. If more than one watering cycle per day is
desired, you can add additional gears (up to five) to set
up to six start times a day. Simply fasten the tripper
gear to the time dial beneath the three hours that run
clockwise from the desired start time.
IMPORTANT: If only one start time per day is desired,
install tripper gear with post on its underside. If multiple
start times are desired tripper gear with post must be
installed as the last start time of the day, since it will
turn the skip-a-day dial advancing your schedule to the
next day.
NOTE: The tripper gear requires
three hours to cycle through all
four 45-minute Stations on the
HRM-4 and HRM-4i and all six
30-minute Stations on the HRM-6
and HRM-6i, regardless of the
actual run times you’ve set or
how many Stations are in use.
Setting additional start times
To set up to five more watering start times, install
additional tripper gears available from Hardie Irrigation,
Customer Service, 9455 Railroad Drive, El Paso, TX
79924. You must allow one hour between the end of
one watering period and the beginning of the next (four
hours between start times).
start
HAM-4, HRM-4i
HRM-6. HRM-6i
Setting the run times
Set automatic run times
You can set each Station with its
own specific run time-from 5 to
45 minutes on the HRM-4, HRM-
4i and from 5 to 30 minutes on
the HRM-6 and HRM-6i.
A. Place slide switch in OFF
position. Rotate Station selector
knob until run time selector is
visible. Insert dime or screwdriver
into slot in run time selector and
turn to align arrow with required
run time. (Run times are
approximate and may vary.)
B. After setting all desired
Stations, rotate Station selector
knob until it clicks into position
with index arrow pointing directly
at time dial. Move slide switch to
AUTOMATIC position.
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