Use a shovel to gently scrape the dirt from the area to find each buried head. Use a metal detector to find buried sprinkler heads. Many valves have metal parts you can locate by running the metal detector over the surface of the ground. Valves are located directly under sprinkler heads.
To open the valve manually, twist the manual bleed screw counter-clockwise until the valve opens. It usually doesn’t need to be more than one-half turn. To close the valve turn the manual bleed screw clockwise until the valve closes.
To keep your irrigation investment safe, monitor the weather and wait until temperatures consistently remain above freezing through the night. Typically, the best time to start up your sprinkler system is between the middle of April and the middle of May.
You can tell (roughly) where the pipes will be for that zone by finding the shortest path from the valve box that connects all the sprinklers in a zone. As long as you dig carefully, you shouldn’t have too much trouble. The pipes are usually pretty tough and are usually buried about a foot or so under the ground.
Interim Dewinterizing
While you may not want to drain the systems and crank up the engine until you are sure a late freeze is out of the question, the warm/cool days of early spring are the perfect time to get a jump on the rest of the spring commissioning processes.
Winterizing is when a house is prepared for vacancy. … This process prepares the plumbing system and components to not be affected by temperature extremes (so the pipes don’t freeze). The process should be performed when a house is expected to be vacant through the heating season, a.k.a winter.
Avoid over-turning the solenoid in either direction, as this can cause damage to the components or cause pressurised water to escape the solenoid. When you hear water rush through the device, it’s easy to tell that the valve has opened successfully.
If one or more of the sprinklers is still not working, contact the installer of the system, as you may have an issue with the hardware. Remove any dirt or debris from the valve of a sprinkler that will not shut off once turned on, as foreign items in the sprinkler may cause it to stick, instructs Sol Vida Landscaping.
A master valve is an automatic valve, typically an electric solenoid type valve, that is installed at the point where the irrigation system connects to the water supply. … Most, but not all, irrigation controllers have a master valve circuit built in to them.
Air Trapped in the Valve:
The valves may have air trapped in them. A small bubble of air becomes trapped in the tiny water ports of the valve, this stops the water from flowing through the port. Since the water flowing through the port is what holds the valve diaphragm closed, the valve stays open.
Opening your sprinkler system for the season will depend on the weather conditions and your individual watering needs. As a general rule, the system should not be opened until the threat of frost is passed. If you are an early planter, we recommend waiting to open your system until after April 15.
The right answer is “whenever it stops getting freezing at night.” Your irrigation system won’t know when your lawn is ready to be watered. It’ll turn on whenever you (or whoever you hired) turns it back on.
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