Flint & Walling 4 (10 cm) Stainless Commander S Series - Manual (Page 11)

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Copyright © 2014 Flint & Walling. All rights reserved.
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Copyright © 2014 Flint & Walling. All rights reserved.
TROublESHOOTING
Problem Possible Cause Corrective Action
Motor runs, but
delivers little or
no water
1. Air locked pump 1. Normal delivery may resume if water
pump is started and stopped at one
minute intervals
2. Gas or air in well water 2. Connect hose to service valve. Run
water thru hose submerged in water in
clear jar. Observe for air bubbles from
hose outlet. If tank is standard type, the
air volume control may be defective -
replace; otherwise, have well checked
for proper water level as pump may be
drawing air. Lower pump and/or correct
well condition
3. Low water level in well or pumping too
much from well
3. Throttle pump with gate valve. Lower
pump setting if depth of well is adequate
4. Defective or improperly installed check
valve
4. Pump must be raised to replace or
reinstall correctly
5. Leak in drop pipe damaged section 5. Raise pump, check pipe for leak and
replace
6. Pump inlet screen blocked 6. Raise pump and clean screen. Verify
that well is clean. Reset pump at less
depth if possible
7. Worn pump 7. Pull pump and replace damaged
components
8. Broken pump shaft or motor shaft or worn
coupling
8. Pull pump, inspect shafts and coupling
for damage. Replace defective
components
Pump operates
properly, but
won’t shut off
1. Pressure switch 1. Readjust switch to lower shut off
pressure setting, clean contacts or
replace switch
2. Low water level 2. Throttle pump outlet at gate valve or
readjust pressure switch to lower shutoff
pressure setting
3. Leak in drop pipe or worn pump 3. Throttle pump output at gate valve or
readjust pressure switch to lower shut
off pressure setting. If pump does not
shut off, pump must be raised and
defect repaired
Pump starts too
often
1. Pressure switch 1. Readjust switch to wider operating
pressure limits; replace defective switch
2. Air volume in tank incorrect 2. Check pressure in tank. Set at 2 lbs.
below turn on pressure of the pressure
switch. i.e. 30/50 pressure switch should
have tank pressure of 28 lbs.
3. Check valve defect or leak in drop pipe 3. Throttle pump output at gate valve. If
pump does not shut off, pump must be
raised and defect repaired