Troubleshooting Guide

6 Jet Pump Troubleshooting Guide K2Pumps.com
K2 PUMPS CUSTOMER SERVICE, CALL 844.242.2475
Problem 6: The Pump starts and stops too frequently
Possible Causes Corrective Action
1. The check valve is installed in the wrong
place within the system.
1. The check valve needs to be in piping between the pump and the
source of water (well, lake, etc.). It cannot be in piping between
the pump and pressure tank. Re-locate the check valve as needed.
2. The check valve or foot valve is leaking.
2. Replace any faulty check valves or foot valves.
3. The pressure switch is out of adjustment
or faulty
3. DISCONNECT POWER. Make the proper adjustment to the
pressure switch. Replace the switch if found to be faulty.
4. Pump cavitation - vibrates and sounds like
pumping gravel.
4. Increase the diameter of the suction piping. Decrease the length
of the piping and minimize the number of elbows, tees, valves and
fittings.
5. The pipes are leaking.
5. Repair the pipe connections or replace the pipes.
6. Faucets have been left open
6. Close faucets
7. Venturi, nozzle or impeller is clogged.
7. Clean venturi, nozzle or impeller.
8. There are too many elbows or other
restrictions between the pressure switch
and tank.
8. Too many restrictions will create a pressure differential that will
"fool" the switch. Use fewer elbows, 45's instead of 90's, flexible
pressure hose instead of pipe and elbows, or anything else you
feel will reduce the number of restrictions in the pump system.
9. The tank is too small and not properly
sized for the application.
9. The minimum tank size should be enough to allow the pump to
run for a minimum of 60 seconds every time it turns on. If the
tank is too small, replace with a larger sized tank.
Pre-charged tank (with bladder)
10. The air charge is too low in the tank. 10. DISCONNECT POWER and open faucets until all the pressure is
relieved. Using tire pressure gauge, check air pressure in the
tank at the valve stem located on the tank. If the pressure switch
cut-in setting is less than 30 psi, pump air into the tank from an
outside source until air pressure is 2 psi less than the cut-in
setting of the switch. Check the air valve for leaks (use soapy
solution) and replace if necessary.
11. The tank has a damaged bladder or no air
cushion
11. Test the tank by depressing the air valve. The air valve will expel
water if the bladder is damaged. Replace the tank if the bladder
is damaged.
12. The tank was pre-charged incorrectly.
12. Add or release air as needed.
Standard or Conventional Pressure Tank
13. The pressure tank is water-logged due to
a defective Air Volume Control (AVC)
valve
13. DISCONNECT POWER and drain tank to (AVC) port. Check the
AVC valve for defects. If defective, replace.
14. Air leaks in the fittings and the top of the
tank.
14. Check the fittings and the top of the tank for air leaks. Repair
leaks or replace tank.