RJ

McGrath, Inc.

Newton, MA (617) 332-3339

Lawn Sprinkler Systems Since 1957

 

Spring Start Up Procedure

 

1)         Make Sure blow out valves (faucets) are turned off.

                        There is one in the house next to the main valve (this should have our BLUE tag on it) and one outside next to the backflow preventer

 

2)         Make sure the controller is plugged in and set the controller to the OFF position

                        Do this to verify that a zone is not be activated during the filling of the main line

 

3)         Turn the main valve on very slow. If it is a ball valve only open it a little. This ¼ turn valve. Only open it about 1/8 of a turn until you hear water starting to flow. Leave it in this position until you hear the water stop running. While it is filling it is a good time to go out side and check for any main line leaks. First check the backflow preventer to make sure it is not leaking. There are two ¼” little valves on the backflow preventer that may be open. Close these if water is spraying out. You may need to use a screw driver to close these ¼” valves.

 

If water is gushing out of the top of the backflow preventer shut both ball valves on the back flow preventer. The water running will stop. Then open the first ball valve quickly. The backflow preventer should seat. Open the second ball valve slowly to fill the main line.

 

4)         Once the main line is full open the main valve all the way.

 

5)         Go to the controller and turn on zone 1. So you don’t have to go back and forth to the controller you should use your controller’s test cycle. If it has one. You could also set up a program that you don’t use (like program c) to run each zone for 3 minutes per zone.

 

Remember to set up a weekly walk through cycle on a different program

 

 

Home