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Wednesday, August 3rd 2005, 1:16pm

Author: g_rosco

Pump is short cycling

We have a residential irrigation system running off a shallow well pump. The pump delivers about 20 gal/min. The pressure switch on the pump is set to turn-off at about 60 psi. The original design was done so each zone handles a bit more than 20 gal/min at 60 psi. As such, when a zone valve opens, the pump just runs without a need for a storage tank. It's operated like this for about 9 years now. This year I've noticed that the pump will short cycle on certain zones. The problem isn't always con...