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#1
09-04-2010, 04:11 PM
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submersible pump
First post. I have a customer with:
240v submersible pump in river hunter pump start relay I have verified that the psr is functioning. I have verified that I have 240V at the pump. The pump kicks on for 30 seconds and then shuts off for several minutes. The pump is constantly repeating the above. Any ideas what might be going on here? 
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#4
09-04-2010, 04:47 PM
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Not much to see on a two-wire pump, unfortunately. My guess is that an internal trip is taking place, like for overheating.
Some surface-water installs of submersible pumps use a cradle/enclosure that maximizes the flow of water past the motor. You could kludge something together and see what that does.
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#5
09-04-2010, 04:51 PM
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the controller is wired to the same circuit as the pump. wiring for controller is hooked into hot side of psr. would this be causing a problem? the controller is only pulling from one leg of the 240v?
if internal trip is taking place, should i just replace the pump?
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#6
09-04-2010, 05:06 PM
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I would try a makeshift enclosure to force the water flow past the motor. It could be a simple as some four-inch pipe and a cap with a hole cut in it.
Of course, if you have a spare pump, you would try that first.
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#7
09-04-2010, 05:08 PM
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what make pump?
who installed it? normally 220 is wired red and black, sometimes blue and black, white is normally for a neutral wire. a franklin sub pump has red,yellow, black and green red ~ yellow = 10.7 - 13.6 ohms - start motor black ~ yellow = 3.0 - 3.6 ohms - main windings http://www.do-it-yourself-pumps.com/...cs-testing.pdf the link is for othe single phase pumps a little more information would help
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