How To Restart Sprinkler System

Has your sprinkler system been dormant all winter, tucked away from the frost and freezing temperatures? If so, now's the time to bring it back to life! Properly restarting your irrigation system after winterization is crucial for maintaining a healthy, vibrant lawn and garden throughout the warmer months. Neglecting this task can lead to wasted water, damaged sprinkler heads, uneven watering, and ultimately, a struggling landscape. Taking the time to reactivate your system correctly will save you money on water bills, prevent costly repairs, and ensure your plants receive the hydration they need.

The process of restarting a sprinkler system isn't overly complicated, but it does require attention to detail and a systematic approach. It involves carefully pressurizing the system, checking for leaks, adjusting sprinkler heads, and reprogramming your controller. Following the correct steps will minimize the risk of damage and guarantee optimal performance. So, are you ready to get your sprinkler system up and running for the season? Let's dive in.

What are the most common issues to check when restarting my sprinkler system?

What steps are involved in restarting a sprinkler system after winter?

Restarting your sprinkler system after winter involves a systematic process of carefully reintroducing water, checking for leaks, and adjusting sprinkler heads for optimal performance. This typically begins with a thorough visual inspection, followed by slowly opening the main water valve, and then individually activating each zone to check for problems.

After winterization, it's crucial to reverse the process carefully to avoid damage. Start by visually inspecting all sprinkler heads for cracks or breaks caused by freezing temperatures. Look at the pipes, connections, and valve boxes for any obvious signs of damage. Next, locate the main water shut-off valve for your sprinkler system. Slowly open it, allowing the pipes to gradually fill with water. This controlled introduction of water pressure prevents sudden surges that can rupture weakened pipes. Once the main valve is fully open, proceed to the controller. At the controller, manually activate each zone one at a time. As each zone runs, walk the system to inspect every sprinkler head for leaks, proper spray patterns, and clogs. Adjust the heads as needed to ensure efficient and even watering, avoiding overspray onto sidewalks or buildings. Look for any signs of pooling water or unusually wet areas, which could indicate underground leaks. If you find a leak, shut off the zone and repair the damage before proceeding. Finally, reprogram your controller with your desired watering schedule, taking into account rainfall and seasonal changes.

How do I prime the pump for my sprinkler system after it's been off?

Priming the pump for your sprinkler system involves removing air from the pump and suction line so the pump can draw water effectively. This is typically done by first locating the priming port on the pump housing, removing its plug, and slowly filling the pump casing with water until water flows out steadily, indicating all the air has been purged. Reinstall the plug tightly and then start the pump; it should now draw water and pressurize the system. If it doesn't, repeat the process, checking for leaks in the suction line that might be drawing in air.

Priming is essential after your sprinkler system has been dormant, particularly during off-seasons or after repairs. Air trapped within the pump and the suction line prevents the pump from creating the necessary vacuum to draw water from the source, whether it's a well, a lake, or a municipal water supply. If the pump runs dry for too long, it can overheat and potentially damage the impeller or other internal components. Several factors can affect the priming process. Ensure all connections in the suction line are airtight to prevent air from being drawn in. A foot valve at the end of the suction line inside the water source is crucial; this one-way valve prevents water from draining back out when the pump is off, helping to maintain prime. Inspect the foot valve regularly for debris or damage, as a faulty valve will make priming difficult or impossible. If your pump consistently loses prime, a professional irrigation technician can diagnose and repair more complex issues, such as a cracked pump housing or a failing foot valve.

What should I check for when restarting to prevent leaks or damage?

Before, during, and after restarting your sprinkler system, carefully inspect all components for leaks, cracks, and any signs of damage caused by freezing or other issues. Pay close attention to the backflow preventer, valves, sprinkler heads, and exposed piping. Start with a slow, gradual increase in water pressure to avoid sudden bursts and make it easier to identify potential problem areas early.

When you slowly reintroduce water pressure, visually inspect each zone individually as it activates. Walk the entire system, listening for hissing sounds that indicate leaks, and looking for geysers or uneven spray patterns from the sprinkler heads. Check the backflow preventer first. A leaking backflow preventer is a common problem after winter, and often requires a professional for repair or replacement. Ensure all valves are opening and closing properly, and that there's no water leaking from the valve bodies themselves. Any cracks in PVC piping, especially near joints, are potential weak spots. After running each zone, shut the system down completely and re-inspect. Sometimes, leaks are more apparent when the system is not actively pressurized. Look for puddles of water forming around sprinkler heads, valves, or along pipe runs. If you find any issues, address them promptly to prevent water waste and potential damage to your property. Consider replacing older or damaged sprinkler heads with newer, more efficient models to improve performance and water conservation.

Where is the main water shut-off valve for my sprinkler system located?

The main water shut-off valve for your sprinkler system is most often found in one of three places: inside your house near the main water meter, outside in an underground box typically near the street or property line, or in your basement or crawl space where the main water line enters your home. Look for a valve that controls only the water flow to the sprinkler system and is distinct from the main house water shut-off.

Finding this valve is crucial for performing maintenance, repairs, or winterizing your sprinkler system. If it's inside, it will likely resemble the main water shut-off for your house but will be clearly labeled or dedicated to the sprinkler system. If located in an underground box, carefully remove the cover (often made of plastic or metal) – be cautious of insects or debris inside. You might need a special key or tool to open the valve, depending on its type. Clear away any dirt or obstructions to fully access the valve.

If you're having trouble locating the valve, check your property's documentation or contact the previous homeowner, builder, or a local irrigation specialist. Understanding where your sprinkler system's main shut-off is located can save you time and potential headaches in the future. Remember to turn the valve off slowly to prevent water hammer and potential damage to your pipes.

How much pressure should I expect when restarting my sprinklers?

You should expect the pressure to be similar to what it was before winterizing, typically between 40 and 60 PSI (pounds per square inch). A significant deviation from this range warrants investigation, as it could indicate a problem with your water source or sprinkler system.

When restarting your sprinkler system, it's crucial to gradually introduce water pressure to avoid damaging components weakened by winter conditions. Start by slowly opening the main water supply valve. This allows the pipes to fill gradually, reducing the risk of water hammer, which can cause pipes to burst or connections to leak. Watch the pressure gauge closely as the system refills. If the pressure climbs too high too quickly, partially close the main valve to regulate the flow and prevent over-pressurization. Once the system is fully pressurized, inspect each sprinkler head and valve for leaks or damage. Check the spray patterns to ensure they are even and consistent. If you notice any irregularities, such as low pressure, uneven spray, or leaks, address them promptly. Common issues include clogged sprinkler heads, damaged pipes, or malfunctioning valves. Ignoring these problems can lead to inefficient watering, wasted water, and potentially more significant repairs down the line.

What if my sprinkler system won't turn on after restarting it?

If your sprinkler system refuses to activate after a restart, it typically points to an electrical issue, a problem with the controller settings, low water pressure, or a valve malfunction. Troubleshooting involves systematically checking each of these potential causes, starting with the simplest solutions first, to identify the root of the problem and restore proper operation.

When a sprinkler system fails to turn on post-restart, the most common culprits reside within the controller itself. Double-check that the controller is receiving power. Ensure the outlet is functioning by plugging in another device. Then, review the programming: confirm that the current date and time are correct, and that the watering schedule is properly configured and active. Sometimes, a power surge or outage can reset the controller to factory settings, erasing your programmed schedule. Consult your controller's manual for instructions on how to reprogram it correctly. Beyond the controller, investigate the water supply and valve functionality. Confirm that the main water supply valve for the sprinkler system is fully open. Low water pressure can prevent the system from activating. Next, inspect the zone valves. These valves are often located in valve boxes throughout your yard. Manually activate each valve by turning the solenoid (usually a small, cylindrical component on top of the valve) a quarter turn. If a valve works manually but not electrically, the problem lies within the wiring or solenoid itself. If none of the valves operate, a problem with the master valve or backflow preventer is possible. If you’ve exhausted these troubleshooting steps and the sprinkler system still refuses to turn on, it's time to consult a qualified irrigation professional. They possess the tools and expertise to diagnose more complex issues, such as wiring problems within the system, faulty solenoids, or controller malfunctions, and provide the necessary repairs.

Do I need to reprogram my sprinkler controller after restarting?

Whether you need to reprogram your sprinkler controller after restarting depends entirely on the type of controller you have. Mechanical controllers generally retain their settings even after a power outage. Digital controllers, however, may lose their programmed schedules and settings if they don't have a battery backup.

Most modern digital sprinkler controllers are equipped with a battery backup or a non-volatile memory system specifically designed to preserve your programming during a power outage or restart. The battery, which is usually a 9-volt battery, provides temporary power to the controller's memory, ensuring that your watering schedules, start times, and zone durations are saved. If the battery is dead or missing, you will likely need to reprogram the controller. Some controllers use non-volatile memory, meaning they retain the settings even without power or a battery.

If you experience a power outage or manually restart your controller, always check the display to see if your programmed schedule is still present. If the display is blank or showing default settings, consult your owner's manual for instructions on how to reprogram the controller. Replacing the battery regularly, typically once a year, can prevent data loss and ensure your sprinkler system continues to operate as intended.

And there you have it! Restarting your sprinkler system doesn't have to be a headache. We hope these steps have helped you get your lawn watered and looking its best. Thanks for stopping by, and be sure to check back soon for more helpful tips and tricks to keep your yard thriving!