MAINTENANCE
Troubleshooting
Troubleshooting
Problem
Electrical trouble
Draw-down protection
Pump fails to start
device has pump turned off
Overload tripped
Clogged intake screen
Insufficient well yield
Worn pump
Pump fails to deliver
water or reduced
Low voltage
output
Incorrect rotation
(3-phase)
Pressure drop between
pressure switch and tank
"Cut-in" or "Cut out" pres-
sure too high
Pump cycles too fre-
Waterlogged pressure tank
quently
Electrodes of float-less liq-
uid level control too close
together
Tank too small
Overloads trip
Electrical trouble
Pressure switch
Pressure switch too far
cycles rapidly
from pressure tank
Backspin
Failed or no check valve
Up-thrust
Check valve drilled
Lowest check valve leaks or
is more than 30 ft above
Water Hammer
water
Check valve drilled
6
Probable Causes
Corrective Action
Call dealer or electrician
Make sure system check valves are correctly installed or uninstall
draw-down protection device. Reset low pressure cutoff switch (if
installed).
Reset overloads and low pressure cutoff switch (if installed).
Clean intake screen.
Shut off system. Refer to
Replace pump.
Make sure the power supply corresponds with the electrical rating
of the motor. For 3-wire, single phase pumps, check the control
box.
Interchange any two leads at the magnetic starter.
Check system for a plumbing leak and correct as necessary.
Follow manufacturer's instructions to properly set the on/off cycle
of the pressure switch.
Follow manufacturer's instructions on resetting/establishing proper
air pressure setting for the tank.
Follow manufacturer's recommendation for installation of the elec-
trodes on the level control.
Install pressure tank with bonded diaphragm, air cell, or water bag.
Call dealer or electrician.
Adjust air charge of tank to manufacturer's recommendations.
Install new, non-swing type check valve(s).
Install positive sealing check valves only.
Shut system down and contact pump installer to correct issue.
Install positive sealing check valves only.
"Low-Yielding Well" on page
5.