Star Water Systems Star 4in Sub Instr2&3-wire - Manual (Page 11)

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Copyright © 2014 Star Water Systems. 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