IBO 2" STING - Page 12

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Troubleshooting
Symptom Possible cause Problem solution
The pump is
running but
giving little or
no water
Too much resistance to
ow through the di-
scharge pipe (hose)
Check that the maximum head for the pump type is
not exceeded. The head the pump must produce is in-
uenced by the dierence in level between the water
table in the well from which we are pumping, and the
level to which we are pumping, the length of the di-
scharge pipe (hose), and its diameter. If the resistance
is too high for the pump type, replace the pump with
a dierent pump with a higher head value
Sand in the pump
(sandy water)
Remove sand from the pump. Clean out the well. The
pump installed too close to the bottom of the well.
The pump sucks up sand
Supply voltage too low Check supply voltage
Not enough water in
the well
Check the position of the pump. The discharge port of
the pump should be located min. 2 m from the lowest
dynamic water level
Sand in pumped water
Water pumping components worn. The pump instal-
led too close to the bottom of the well. The pump
sucks up sand. Have worn parts replaced by the war-
ranty service against payment
Frequent
switching the
pump on and
o
Hydrophore tank too
small
Change to a larger tank
Hydrophore tank too
small No air cushion in
the tank
Change to a larger tank
Check the air pressure in the tank. Pump up. If the
situation persists frequently, check for a ruptured
diaphragm in the tank
Insucient dierence
between switch-on and
switch-o pressure at
the pressure switch
Adjust the switch
Built-in check valve Remove the pump, replace the valve