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Winterizing
Your Sprinklers
Definition
- The process of preparing sprinkler heads, pipes and fittings
to withstand freezing temperatures
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| Tips
From Rain Bird to Help Keep Your Sprinklers Safe Until Next
Spring |
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Without
proper preparation your sprinkler system can be damaged by freezing
temperatures. Here are some tips from Rain Bird on how to prepare
your irrigation system if you live in a region where it freezes.
1.
Insulate your assets.
Shut
off the water supply to the irrigation system. The main shut off
valve for your irrigation system needs to be protected against
freezing. To prevent it from freezing make sure it is wrapped
with insulation (foam insulation tape and a plastic bag), or somehow
protected from freezing. If you do not have a main shut off valve,
consider it a preventative investment. Any above ground piping
needs to be insulated. Self-sticking foam-insulating tape or foam
insulating tubes commonly found at home supply stores, are fine.
2.
Stay in control.
If
you have an automatic system then you will need to "shut
down" the controller (timer). Most controllers have a “rain-mode"
which simply shuts off the signals to the valves. The controller
continues to keep time, the programming information (start times,
valve run times, etc,) isn't lost, and the clock continues to
run. The only change is that the valves will not activate. If
your controller is responsible for activating a pump, as a precaution,
remove the wires that are connected to the MV and common. This
will prevent the possibility of the pump from being activated
which could cause overheat damage.
An
alternative to using the rain mode is simply to shut off the power
to the controller. If you do, you'll need to reprogram the time
and potentially all your other settings as well, in the spring.
3.
Drain the pipes.
Now
you need to remove the water from the pipes and sprinklers so
that it won't freeze and break the pipe. There are several ways
to drain your pipes: the manual drain valve, the automatic drain
valve or the compressed air blow-out methods. However, since there
could be potential safety risks we recommend contacting your local
irrigation specialist.
4.
Protect valves and backflow preventers.
Insulate
backflow preventers and valves if they are above ground. You can
also use insulation tape for this. Do not block the air vents
and drain outlets on backflow preventers.
Please
review the Rain Bird Homeowner's Guide to Winterization for detailed
instructions on how to prepare your irrigation system for the
Winter months.
Rain
Bird Homeowner's Guide to Winterization
http://www.rainbird.com/pdf/diy/WinterizationGuide.pdf
Troubleshooting
Quick Guide
WATER
DOES NOT TURN OFF
When
a part of the system stays on well after it was scheduled to shut
down, you know there is a problem. Sometimes the problem is an
improperly set irrigation controller. In other instances, there
is a mechanical failure with a control valve and the system will
need to be turned off at the main water source.
TURNING
OFF YOUR CONTROLLER
Every
type of controller, mechanical or digital, will have some type
of OFF position. Some makes of controllers label the OFF position
as RAIN OFF or simply RAIN. If turning off the controller fails
to shut the system down, you must go next to the main water source
for the irrigation system.
TURNING
OFF THE SYSTEM AT THE WATER SOURCE
Every
sprinkler system, if properly installed according to local codes,
should have a separate cut off for the irrigation system. There
may be a lever type handle or gate valve type handles (something
like large faucet handles). Don't be surprised if you find the
handles either broken or partially broken, they are notorious
for twisting off due to corrosion. If the handles are gone, you
may still be able turn off the water with a pair of channel locks
or vice grips. Once the crises is solved, you should call a professional
repair technician to locate and repair the problem.
CONSTANT
WET AREA
If
you have a wet spot in your lawn, first turn on your sprinkler
system to see if you can spot any obvious problems. Next, be sure
your controller has not malfunctioned and that you are not over
watering. Turn your sprinkler system off at the control panel
for a couple of days to see in this corrects the problem. If the
problem persists, turn off the water at the main water supply.
If the leak is in your lawn sprinkler system, the area should
dry within a couple of days.
CONTROLLER
When
your electronic or digital controller does not operate properly
and/or will not accept a program you should try to clear the display.
Remove the back up battery and unplug the controller from the
wall. After approximately 15 seconds, re-power the controller
and see if this solved your problem. Sometimes these controllers
are affected by a power surge that causes the memory to scramble
and you simply need to clear the memory. If this fails to solve
your problem, you may need to call an irrigation technician.
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