Protecting your sprinkler system from winter damage is crucial for its longevity and efficient performance in the spring. Failing to drain your system can lead to costly repairs due to frozen and burst pipes. This comprehensive guide outlines the steps to properly drain your sprinkler system, ensuring it survives the winter months unscathed.
Understanding Your Sprinkler System
Before you begin draining, it's essential to understand the type of sprinkler system you have. There are two primary types:
- In-ground sprinkler systems: These systems have pipes buried underground, connecting to a main water supply and various sprinkler heads. These require more thorough draining.
- Above-ground sprinkler systems: These systems typically consist of hoses and sprinklers positioned above ground. Draining these is generally simpler.
Regardless of the type, knowing your system's layout and components—including valves, backflow preventers, and zones—will make the draining process smoother and more effective. Consult your system's installation manual if available.
Step-by-Step Guide to Draining Your Sprinkler System
The specific steps will vary depending on your system's complexity, but the general process remains consistent.
1. Turn Off the Main Water Supply
This is the most crucial first step. Locate your main water shut-off valve, typically near the meter. Completely turn it off to prevent any further water flow into your sprinkler system.
2. Locate and Access Your Drain Valves
Many in-ground sprinkler systems have drain valves strategically placed at low points in the system. These valves allow water to drain out of the pipes. Locate these valves; they may be near your backflow preventer or other system components. You might need to consult your system's layout or contact a professional if you can't locate them.
3. Open the Drain Valves
Carefully open each drain valve, allowing water to freely flow out of the system. This may take some time, particularly if your system is extensive. Ensure that all valves are fully open and unobstructed.
4. Run Your Sprinkler System (In-Ground Systems Only)
For in-ground systems, after opening the drain valves, briefly run each zone of your sprinkler system. This helps push any remaining water out of the pipes and towards the drain valves. This step is crucial for complete draining.
5. Check for Remaining Water
After running each zone and allowing ample time for draining, check the sprinkler heads and other low points in your system for any signs of remaining water. If water remains, you may need to revisit steps 2-4 or contact a professional for assistance.
6. Disconnect Above-Ground Components (If Applicable)
For above-ground systems, disconnect hoses and sprinklers, allowing water to drain out. Store these components properly to prevent damage.
7. Blow Out the Lines (Optional but Recommended)
For both in-ground and above-ground systems, using an air compressor to blow out any remaining water is highly recommended. This helps ensure complete drainage and prevents freezing. Attach the compressor to the system's main supply line and run it for several minutes. Caution: Ensure you understand the proper use of an air compressor to avoid damaging your system.
8. Winterize Your Backflow Preventer
Your backflow preventer also requires winterization. The methods vary depending on the type of backflow preventer you have. Consult your backflow preventer's manual or contact a professional plumber for instructions.
Tips and Considerations
- Timing: Ideally, drain your sprinkler system before the first anticipated frost.
- Professional Help: If you're unsure about any step, or if your system is complex, consult a professional sprinkler technician.
- Record Keeping: Keep a record of the steps you followed and any issues encountered.
- Regular Maintenance: Regular maintenance and cleaning of your sprinkler system throughout the year will improve its performance and make the draining process more efficient.
By following these steps, you can effectively drain your sprinkler system, ensuring its protection against winter weather and ensuring its longevity and optimal performance in the spring. Remember, prevention is key – proper draining is a simple yet effective way to save yourself from costly repairs.
