How to Dewinterize a Sprinkler System
- 1). Locate the vacuum breaker, which is usually near the manifold outside.
- 2). Use a wrench to turn the small brass knob at the base of the vacuum breaker clockwise until tight. This will prevent water from spraying from the breaker.
- 3). Locate the main water line.
- 4). Turn the valve that connects the main line to the sprinkler system a half turn. This will turn on the water to the sprinkler system.
- 5). Turn both valves on the vacuum breaker a quarter turn. This will release water to the manifold.
- 6). Turn on the sprinklers, one zone at a time. This will flush water into the supply line and activate the sprinklers.
- 7). Inspect every sprinkler head for obstructions and performance.
- 8). Scrub sprinkler heads with a nylon brush to clear any debris and improve performance.