During the winter, your lawn and garden may not need to be irrigated with the sprinkler system, so it makes sense to turn it off. When the time comes in the spring, however, you’ll need to turn it back on. With the sprinkler system working, your grass and flowers can get the water that they need to grow bright and lush.
Some homeowners count on a lawn service or irrigation contractor to winterize the system in the fall and turn it back on in the spring, but there is no reason to pay for this service, as it’s very easy to do yourself in just a matter of minutes.
The most important thing to remember when turning on a sprinkler system is to turn on the water slowly. You can create a sizable water hammer—a shock wave caused by a sudden change in water flow—by turning the water on too quickly. This can burst fittings or pop off sprinkler heads. Always open the system shutoff valve slowly to let the system pressurize gradually; it takes just a few seconds.
Need more help? Talk to a sprinkler technician near you
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Source: The Spruce