Pressure tank cycles and fills up from 30 psi to 60psi then drops to 40psi. Doesn't hold the charge. Even though nothing is running. I replace the pressure switch and it works nicely for 6-8 months. Then the pressure dies and no matter how much I turn switch 1 and 2 it never helps. Does the bladder have a hole? Amperage? There is aluminum wiring.

Help.

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Pressure tank cycles and fills up from 30 psi to 60psi then drops to 40psi.

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Does it hold at 40 PSI? If this has a spring loaded check valve perhaps the spring has weakened. If it continues to drop replace the check valve. Good luck, Tom