- 1). Turn the system controller to the rain setting. This will tell the controller the weather is rainy and the system will not turn on automatically.
- 2). Turn off the water supply to the entire system.
- 3). Turn on the entire system manually. This will drain the water pressure from the pipes.
- 4). Open the lid to the ground box for the control valves. Most systems have the valves buried in the ground inside of a box for ease of maintenance, some valves will be above ground or inside.
- 5). Locate the solenoid on the valve. The solenoid is located on top of the control valve. Most are black and have two wires coming out of them.
- 6). Find the connections for the solenoid wires to the irrigation wires in the ground. The connection is normally with a direct bury connection or electrical tape.
- 7). Cut the wires past the connection to the irrigation wires.
- 8). Remove the solenoid from the valve by turning the entire solenoid counter clockwise. Some valves have solenoids that have screws holding them in place.
- 9). Install the new solenoid by screwing the solenoid back into the same threads the old solenoid came out of. Do not tighten beyond hand tight.
- 10
Strip all four wires to reveal 1/2 inch of copper. - 11
Twist one wire from the controller and one wire from the solenoid together. - 12
Twist the wire nut from the direct bury connection onto this connection. Make sure the nut is on tight. - 13
Press the wires and nut into the grease tube from the direct bury connection until thee nut is at the bottom of the tube. Close the lid until it clicks. - 14
Repeat steps 11, 12 and 13 for the other wire. - 15
Turn the water supply back on to the system. Make all the heads are running. If a large section of heads is not running then more solenoids need to be replaced. Turn the system off manually. - 16
Close the lid for the ground box of the valve. - 17
Turn the irrigation controller back to the normal running mode.
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