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Old 06-16-2015, 04:44 PM   #1
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Well pressure gauge Problem

Installed new submersible pump, new captive air tank, new 40/60 pressure switch and new pressure gauge. Checked tank for 38psi before filling. Well pump has been going off and on as fixtures used. (short cycling)Pressure in tank now reads 58psi and pressure gauge reads 48 psi. Think gauge is bad or clogged? and how does pump know when to shut off like it has if neither tank or gauge reads 60psi? This is a 4 wire pump with control center. Can I just shut off pump and remove gauge check quickly reinstall or will a lot of water come out of gauge opening on manifold? Shutoff pump, Drain pressure tank, remove and replace pressure gauge? What would best procedure be?
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Old 06-16-2015, 05:36 PM   #2
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Pressure switch works in dependent of the gauges. It has its own build in pressure sensor. The switch is adjustable by screw or nuts within the switch.
If the two gauges do not read the same pressure, one or both of them are wrong.
With the tank pressurized by the pump the pressure should read the same as system pressure.
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Old 06-16-2015, 05:50 PM   #3
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As Joed mentioned, the pressure gauge could be removed with no ill effects of pump operation.

Short cycling? How many gallons draw down do you get between shut off of the pressure switch and turn on of the pressure switch ?

Your gauge pressure and tank pressure should be reading within 3-4 lbs. or so of the 40 and 60 pressure switch factory setting but don't dwell on attempting to get them exactly equal. The accuracy of those in manufacturer is kind of poor percentage wise.

Yes, both the pressure gauge and pressure switch are capable of be affected by small debris particles during repairs.
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Old 06-16-2015, 07:54 PM   #4
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Pressure switch has a high lo setting. When no water is run does the pump turn on?

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Old 06-16-2015, 08:07 PM   #5
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What size tank did you install?
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