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Troubleshooting 11
Problem
Check
Corrective Action
Pump starts too frequently .
Leaks in system.
Check all tank connections with
soapsuds for air leaks. Check
plumbing for leaks.
System must be air and water tight.
Pressure switch.
Check for defective switch or switch
out of adjustment.
Re-adjust or replace pressure switch.
Tank waterlogged.
Pre-charged tanks; check tank pre-
charge air pressure, check for leak in
bladder.
Pre-charge tanks: adjust air pressure
to 2 PSI (13.8 kPa) less than pump
cut-in pressure (when there is no
water pressure on system). Replace
bladder if necessary.
Air over water tanks: check for air
leaks. Check Air Volume Control
(AVC). Check air pressure valve
operation.
Air over water tanks: repair or replace
tanks; replace air pressure valve if
necessary.
Leak in drop pipe.
Raise drop pipe one length at a time
until water stands in pipe.
Replace pipe above that point.
Pressure switch too far from
tank.
Measure distance from pressure
switch to tank.
Move switch to within one foot (.3m)
of tank.
Little or no water delivered .
Bleeder orifice check valve
stuck or installed backwards
(standard tank only).
Examine valve.
If stuck, free valve; if installed
backwards, reverse it.
Low water level.
Determine lowest water level in well
while pump is running and compare
to pump depth setting.
Lower pump further into well (but
at least 5’ (1.6m) above bottom
of well). Throttle pump discharge
until discharge equals recovery rate
of well.
NOTICE Running pump while
airlocked can cause loss of prime and
seriously damage pump.
Low voltage.
Check voltage at control box with
pump running. Check incoming wire
size and drop cable size against
Cable Sizing tables.
Install larger wire from meter to
control box. Install larger wire from
control box to pump. If necessary,
have power company raise supply
voltage.
Plugged intake screen.
Pull pump and check condition of
screen.
Clean or replace as necessary.
Check valve at pump
discharge stuck.
Pull pump and examine check valve.
Free check valve.
Worn impellers and diffusers.
Make sure system is clear of
obstructions and pump is in solid
water and operation normal.
Replace pump.
Air or milky water discharge from faucets .
Gas in well water.
Check for presence of gas in well
water.
Remove bleeder orifices; plug tees.
Be sure plugged tees do not leak.
If necessary, separate gas from air
before it enters pressure tank.
Air volume control not
working (standard tanks
only).
Make sure ports and ball check valves
are clear.
Replace control if necessary.
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