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Old 07-11-2001, 09:46 PM
greasemonkey greasemonkey is offline
LawnSite Member
Join Date: Mar 2001
Location: Ann Arbor, MI
Posts: 57
You can turn the pump on and off with a "pump start relay" which should be available from your local irrigation supplier. A relay is an electricly controlled switch. It is wired to the "pump" or "master valve (MV)" terminal on the controller and switches the high (120 or 240) voltage pump power on whenever a zone is on. It would be good idea to have a flow switch wired into the system so that if there a drop in flow caused by a lack of water at the suction inlet that the pump would not burn itself out. keep in mind that the flow switch needs to be sized to the pump to assure accurate cut in and out.
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