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C. PUMP WILL NOT SHUT OFF
Cause of Trouble
1. Wrong pressure switch setting or
setting "drift"
2. Defective pressure switch
3. Tubing to pressure switch plugged
4. Loss of prime
5. Low well level
6. Plugged injector or ejector
D. PUMP STARTS AND STOPS TOO OFTEN
Cause of Trouble
1. Leak in pressure tank
2. Defective air volume control
3. Faulty pressure switch
4. Leak on discharge side of system
5. Leak on suction side of system
6. Leak in foot valve
8
How to Check
Lower switch setting. If pump shuts off,
this was the trouble.
Arcing may have caused switch contact
to "weld" together in closed position.
Examine points and other parts of
switch for defects.
Remove tubing and blow through it.
When no water is delivered, check
prime of pump and well piping.
Check well depth against performance
characteristics to make sure pump and
injector are properly sized.
Remove and inspect
How to Check
Apply soapy water to entire surface
above water line. If bubbles appear, air
is leaking from tank.
This will lead to a waterlogged
tank. Make sure control is operating
properly. If not, remove and examine
for plugging.
Check switch setting. Examine switch
contact for dirt or excessive wear.
Make sure all fixtures in plumbing
system are shut off. Then check all units
(especially ballcocks) for leaks. Listen
for noise of water running.
On shallow well units, install pressure
gauge on suction side. Close the
discharge line valve. Then, using a
bicycle pump or air compressor, apply
about 30 psi pressure to the system. If
the system will not hold this pressure
when the compressor is shut off, there
is a leak on the suction side.
Pull piping and examine foot valve
How to Correct
Adjust switch to preopen setting
Replace switch if defective
Clean or replace if plugged
Reprime if necessary
If undersized, replace pump or ejector
Clean and reinstall if dirty
How to Correct
Repair leaks or replace tank
Clean or replace defective control
Adjust switch settings. Clean contact
with emery cloth if dirty.
Repair leaks as necessary
Make sure above ground connections
are tight. Then repeat test. If necessary,
pull piping and repair leak.
Repair or replace defective valve
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