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Old 12-30-2010, 12:46 PM   #1
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ShurFlo water pumps

While connected to city water my pump has been on and off intermittently.It presently has failed to respond have I damaged it while on higher pressure (city water line).Would it be wise to bypass the pressure switch to determine if the motor has failed and the pressure switch has frozen.If it is a pressure switch can one replace only the micro switch.I have heard of kits what do they consist of.

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Old 12-30-2010, 05:54 PM   #2
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There should be no problem from having the water pump online at the same time as city water. The pump should come on only if city water pressure drops below the pump pressure threshold, which is usually 45-48 psi.

Are you saying that you have now disconnected city water and now the pump won't come on? No water flows when you open a tap? What about the fuse for the pump (may be inline in the wire near the pump itself).

Gary Brinck
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Old 12-30-2010, 05:55 PM   #3
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Your city water pressure should be controlled to a max pressure of 45-55 psi by a regulator on the hose to the city faucet. The pump is probably rated out to 65 psi but regardless the city water pressure will not damage a pump. Yes you can bypass the pressure switch for testing as long as you always have a faucet open. Maybe two open for safety.
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