Pressure Vacuum Breaker (BackFlow) Draining Procedure for Freeze Protection
Your Sprinkler System has six major components. The Main Shut-Off Valve (#1) and Interior Drain (#1 a) are located in the basement. The Vacuum Breaker (style may vary) (#2) is located outside. The Automatic Control Valves (#3) are installed outside underground with a valve box around them providing protection and accessibility. The Manifold Drain (#4) may be a manual type or a self draining type, and it is installed in or near the valve box. The Controller (clock) (#5) activates the Automatic Control Valves (#3) causing the Sprinkler Heads (#6) to distribute water. This device is located either in the basement or the garage next to this document. Minor changes may be made depending on the homeowners’ requirements. Proper maintenance will increase the life of this system. It is strongly recommended that you have the system professionally winterized with compressed air. However, until you are able to do so, follow these steps to minimize damage caused by freezing
CS Sprinklers lnc. IS NOT LIABLE FOR FREEZE DAMAGE TO ANY PORTION OF THIS SYSTEM.
- Fully close (#1) Main Shut-Off Valve. Always open and close ALL valves SLOWLY!
- Set valves and testcocks on the (#2) Vacuum Breaker to a half open position (shown below).
- If your system has a manual (#4) Manifold Drain, fully open this drain. If it is an automatic type, please proceed to step # 4.
- Open the (#1 a) Interior Drain to drain the remaining water (leave it open).
- Set the (#5) Controller (clock) to the OFF or Rain position.