The signals from the pressure and limit switches are wired to relays, which then control the signals to turn the pumps on and off. The relays are usually a series of clear plastic cubes (aice cube relaysa) plugged into the wiring system inside theanbsp;...
|Title||:||Golf Course Irrigation|
|Author||:||James Barrett, Brian Vinchesi, Robert Dobson, Paul Roche, David Zoldoske|
|Publisher||:||John Wiley & Sons - 2004-01-16|