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Melnor HydroLogic 73280 User Instructions page 2

Advanced four-zone electronic water timer
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9
RAIN DELAY: "Prevent watering when rain is in the
forecast."
If there is rain in the forecast, you can temporarily suspend your
n
watering program on all zones for up to 7 days using the RAIN DELAY
feature. After the selected delay has ended, your watering program will
automatically resume.
To set the Rain Delay, check to make sure the arrow on the screen is
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pointing to AUTO.
Hold the
button until the word DELAY
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appears. Now press the
the duration of the delay. You can reduce
or deactivate the delay period with the
button.
Once the delay time is selected, press the
n
button and wait for the number to stop
flashing.
All other functions, including MANUAL
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WATERING and OFF are on hold during
RAIN DELAY. To cancel RAIN DELAY, press the
is set to "0".
Note: In the RAIN DELAY mode, the screen will
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alternate between the current time and the
remaining delay time.
10
OFF MODE: "Stop watering for an extended period."
To stop watering indefinitely, press the
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screen points to OFF. The timer will not water while in this mode. The screen
will display the word OFF.
To start watering automatically again, press
n
the
button until the arrow on the screen
points to the AUTO. The program will begin
watering at the next previously scheduled
START WATER Time.
Note: Watering will be stopped for all zones
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when this feature is activated.
11
MANUAL WATERING: "Fill a bucket, clean the car or
wash the dog."
To use a hose or other watering tool, simply press the (manual)
n
button. Then using the
Using the
button, select the length of
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time you wish to water. After a few seconds,
the valve will open, and then automatically
close when the selected time is reached.
Note: The timer will hold the last manual
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time in its memory. To reset the manual time
back to "0", press the
and
adjust the time.
12
TIMER RESET
To completely erase all settings in the timer and return to the original factory
settings, press and hold the
button for 7 seconds. The screen will display
RESET.
You will need to press and hold the
format.
Note: All programming will be lost when the timer is RESET. After RESET
You may need to change the time setting between 12-hour (AM/PM) and
24-hour (military time). See Step 4 for further
instructions.
PLANNING TABLE
ZONE 1
CYCLE A
Start Water (Time)
How Long (Minutes)
ZONE 2
CYCLE A
Start Water (Time)
How Long (Minutes)
ZONE 3
CYCLE A
Start Water (Time)
How Long (Minutes)
ZONE 4
CYCLE A
Start Water (Time)
How Long (Minutes)
WATER DAY
button to set
NEXT START
WATER
DAY
AM
PM
TODAY
SU
MO
TU
WE
ZONE
RESET
1 2 3 4
RAIN DELAY, HOLD
button until DELAY
button until the arrow on the
WATER DAY
NEXT START
WATER
DAY
AM
PM
TODAY
SU
MO
TU
WE
ZONE
RESET
1 2 3 4
RAIN DELAY, HOLD
button select which zone you want to use.
WATER DAY
NEXT START
WATER
DAY
AM
PM
TODAY
buttons to
SU
MO
TU
WE
ZONE
RESET
1 2 3 4
RAIN DELAY, HOLD
button a second time to change the clock
WATER DAY
NEXT START
WATER
DAY
AM
PM
TODAY
SU
MO
TU
WE
ZONE
RESET
1 2 3 4
RAIN DELAY, HOLD
CYCLE B
CYCLE C
CYCLE B
CYCLE C
CYCLE B
CYCLE C
CYCLE B
CYCLE C
USEFUL TIPS
Open Valves During Installation
Shaking during transportation can cause valves to be open. if this occurs, water
may run continuously through one or more valves during installation.
Turn the water off.
n
Remove the batteries. Wait for the screen
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to go blank. Reinsert the batteries.
Note: Removing the batteries will not
START WATER
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erase any existing watering schedules.
CYCLE
Turn the water back on.
TIME
A B C D
n
EVERY
DELAY
If the problem persists, turn off the water.
HRS
n
DAY
Use the Manual feature to open and
MIN
TH
FR SA
close each valve 3 times.
MANUAL
Cleaning Your Timer
You should clean your timer periodically. Debris or sediments commonly found
in water can build up in your timer.
Turn off the water. Remove the timer from the faucet and check that the
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filter washer is clear. If you notice any debris, remove the filter washer and
clean it out with water.
START WATER
CYCLE
TIME
A B C D
EVERY
DELAY
HRS
DAY
MIN
TH
FR SA
MANUAL
Activate the MANUAL mode by pressing the MANUAL button. Open all of
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the valves and spray water through each valve and the faucet connection
to flush out any built-up sediments or debris.
START WATER
CYCLE
TIME
A B C D
EVERY
DELAY
HRS
DAY
MIN
TH
FR SA
Seasonal Storage
MANUAL
Freezing temperatures can cause water in
the timer to freeze and expand, damaging
the timer.
At the end of the season or when there
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is frost in the forecast, turn off the water
and remove your timer from the faucet.
Remove the batteries.
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Be sure to store the timer indoors, away
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from freezing temperatures.
Tips for Battery Life
START WATER
Make sure to use fresh alkaline batteries.
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Do not use rechargeable batteries.
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CYCLE
TIME
A B C D
Remove the batteries at the end of the season before
EVERY
n
DELAY
storing.
HRS
DAY
MIN
Batteries should last about one season. A schedule with
TH
FR SA
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more frequent watering times can cause the batteries to
MANUAL
drain faster.
CYCLE D
CYCLE D
CYCLE D
Warning: Intended for outdoor use only. Severe electrical shock could result if
CYCLE D
water is sprayed into outlets or sources of electrical current. Do not use water
more than 115°F (46°C). Do not use when the ambient air temperature is less
than 40°F (4.5°C). When not in use, remove batteries, drain and store indoors
away from freezing temperatures.

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