Pressure Tank Troubleshooting

This “TROUBLESHOOTING” information is intended to guide in the general determination of pump problems and their solutions. Each manufacturer normally provides a description of warranty conditions. Some pump warranties are immediately voided if the unit is disassembled. Be sure to thoroughly read the owner's manual and warranty.

PUMP RAPID-CYCLES
  • Incorrect air charge in tank (Set air-charge 2 PSI below the pump cut-in pressure for steel bladder tanks or 4 PSI for fiberglass bladder tanks).
  • Bladder or diaphragm has ruptured. (Check by depressing the air valve stem. If water emerges, diaphragm is ruptured (Replace tank).)
  • Incorrect pressure switch differential (Adjust pressure switch differential to 20 PSI. Tank too small. Check tank sizing, (Replace tank).


Notes:
  • Pressure tanks are usually pre-charged at 30 PSI.
  • Drain water from tank to check tank air charge.
  • Pressure switches are usually set for 30-50 PSI.


PUMP ACTIVATES WITH NO APPARENT DEMAND
  • Faulty check or foot valve. (Close valve between tank and house. If gauge pressure drops, the check or foot valve is faulty. Replace defective valve)
  • Slow leak in house plumbing. (Close valve between tank and house. If gauge pressure does not drop, there is a slow leak in the house plumbing. Repair leak)


TANK LOSES AIR
  • Defective air valve core. (Brush soapy water around air stem. If leak is found, the valve core is defective. Replace valve core)
  • Defective tank weld. (Brush soapy water around tank welds. If leak is found, the tank is defective. Replace tank)
  • Ruptured tank diaphragm Replace tank


WATER FLOW STOPS AT CUT-IN
  • Incorrect air charge in tank Set air-charge 2 PSI below the pump cut-in pressure for steel bladder tanks or 4 PSI for fiberglass bladder tanks
  • Defective pump Repair pump
  • Defective well piping Repair or replace piping


TANK WON'T FILL
  • Incorrect air charge in tank (Set air-charge 2 PSI below the pump cut-in pressure for steel bladder tanks or 4 PSI below for fiberglass bladder tanks )
  • Diaphragm Stuck. )If air charge is 2 PSI below cut-in, relieve all air from tank. Run pump through one cycle. If tank fills, diaphragm was stuck. Reset air charge)

  • Questions & Answers

    Ask a question about Pressure Tank Troubleshooting. Click here
    Customer Reviews



    About Us Contact Us Customer Reviews Facebook Twitter Disclaimers Privacy Policy Returns Shipping Policy Terms of Sale Terms of Use Warranty FAQ Site Map Technical Info Terminology Troubleshooting
    • Internet prices apply only to Internet purchases.
    • Minimum order amount is $20.00.
    • All merchandise listed is in stock.
    • Orders are shipped the next business day.
    • We only sell within the 48 adjacent United States.
    • Shipping tracking numbers are e-mailed automatically.
    • Office hours are: Mon - Fri, 8am - 5pm EST excl. holidays.
    Copyright © 2012 All Rights Reserved.