POTENTIAL PROBLEMS DURING OPERATION AND SOLUTIONS:
The security device against
dry run has been engaged
Wait until the quantity of water in the well is sufficient so the
pump is switched on automatically.
The security device against
over-current has been
engaged
Wait until the motor cools down and switch on the pump.
Check the cause of the overload. Remove the cause.
Make sure the electric plug of the pump is properly inserted in
electric socket.
Check the corks at home and all installation switches which
may cut off the power supply from the network
Check if power supply is ensured near your house –
the
power company may have cut off power in a larger area.
The pump keeps
switching on and off
A break in one wire of the
feed cable
Check resistance between the cable wires
Incorrect voltage or drop
during start-up
The pump is running
but is not feeding water
or is feeding too little
water
The filter screen is blocked
at suction
Disconnect the pump from electrical supply.
Take the pump out of the well and clean the filter
Incorrect direction of the
motor revolution
(Valid only for 3 phase
motor)
Change the two veins of the feed cable on the feeding strip
(only for three-phase motors)
Too high resistance during
the flow through the
delivery pipe (hose).
Check if the permitted lifting height
for this specific type of
pump is not exceeded
.
The lifting height to be generated by
the pump depends on the level difference between water
table in the well the water is pumped out and the level at
which the water is pumped
,
the length of the delivery pipe
(hose) and its diameter
.
If resistance is too high for this
specific type of pump replace the pump with a different one,
of greater lifting
height.
Sand in the pump (dirty
water)
Remove sand from the pump. Clean the well.
Supply voltage is too low
Too little water in the well
Check the pump’s position. The pump’s fuel feed port should
be at least 2
m
from the lowest dynamic level of water table.
Frequent switching on
and off the pump
Pressure vessel is too small
Replace the vessel with a bigger one
No airbag in the pressure
vessel
Check the air pressure in the vessel.
Add if necessary.
If the situation repeats often check if the
diaphragm in the vessel is not broken
The difference between the
switching on and switching
off pressure at pressure
switch is too small
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