NOCCHI K Série Manuel D'utilisation Et D'entretien page 12

GB
PROBLEM
THE PUMP DOESN'T START,
BUT THE FUSES TRIP AND THE
STARTER RELAYS CANNOT BE
ENABLED
THE PUMP STARTS, THE FUSES
TRIP AND THE STARTER
RELAYS ARE ENABLED
THE PUMP STARTS TOO OFTEN 1) Leakage in the installation.
THE PUMP YIELDS LOW FLOW
RATES AND HEADS
THE PUMP DOESN'T PROVIDE
WATER
10
POSSIBLE CAUSE
1) No voltage or incorrect voltage.
2) The command panel is not
connected properly.
3) The pump is blocked.
4) Interrupted circuit in the cable or
motor winding
5) The differential switch has
tripped.
1) Low voltage
2) Overload originating from sand
clogging. Bearings tend to block
3) The current that passes through
the windings is 1.5-2 above the
rated value (single-phase
versions)
4) The differential switch has
tripped.
5) The pump is blocked in a non
perfectly vertical well
2) Electric pump capacity too high
with respect to the well (level
probes intervene).
3) Pressure switch not correctly
calibrated (use with autoclave).
4) Tank saturated with water.
5) Autoclave tank too small.
1) IIncorrect direction of rotation
(three-phase versions)
2) Leakage in the installation.
3) Filter is clogged or sand in
electric pump.
4) Electric pump worn out.
5) The pressure head has been
incorrectly calculated
1) The water level in the well is
lower than the suction level or
the stratum has lowered
2) The valves are blocked or
positioned in the opposite
direction
3) Leaks in the delivery hose
4) Pump or suction filter clogged
with sand
5) Incorrectly calculated load
losses
6) Worn pump
7) The voltage is below the rated
value and the absorption is
higher than usual
8) The absorbed current is below
ordinary values because of the
presence of air inside the pump
REMEDY
1) Check that there is electricity and verify voltage with
data on motor plate.
2) Correctly connect the control panel.
3) Remove obstacle from electric pump.
4) Use an Ohmmeter to control the continuity of the
electric system
5) Reset switch, if it trips again call a qualified electrician.
1) Increase the diameter of the supply line.
2) Extract the pump, repair it and clean it.
3) Check the voltage on the phases, inspect the condition
of the fuses and of the starter contacts.
4) Reset the switch. If the switch continues to trip, contact
a qualified electrician
5) Move the pump to the correct position and restart it.
1) Find leak and repair it.
2) Reduce amount of incoming water from source.
3) Adjust calibration.
4) Restore correct tank functioning.
5) Replace the tank.
1) Reverse two power supply phases in the command
panel.
2) Find leak and repair it.
3) Remove the unit and clean the filter.
4) Extract the pump, inspect it and replace the worn parts
or the pump
5) Revise calculations and replace the pump, if necessary
1) Check the stratum level during the pump operation and
reposition the pump into the well
2) Check the valves. If they are blocked, slightly hit the
delivery line in the attempt of moving the valve
3) Inspect the line, find possible leaks and repair them
4) Extract the pump and clean the filter and the parts
clogged with sand
5) Revise the calculations and use a hose with a larger
diameter or replace the pump
6) Replace the pump
7) Increase the voltage. Increase the diameter of the
supply cable
8) Start the pump and stop it at intervals of about one
minute