ENGLISH
20
1
2
3
4
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6
CAUSE
ACTION
x x Pump
blocked.
Disconnect the pump and take it to a
qualified service representative.
x
The bottom valve is
clogged.
Clean or replace.
x x
Total manometer
pressure is higher than
expected.
Check the geometric lifting height and
pressure loss.
x x x Incorrect
voltage.
Check that the mains voltage corresponds
with the data specified on the type plate.
x x x
The water level in the
well or tank has dropped.
Check the suction height.
x
Fuse or overheat
protection has tripped.
Replace the fuse or overheat protection.
x x
Worn
pump
impeller.
Disconnect the pump and take it to a
qualified service representative.
x x
The end of the suction
pipe is not below the
surface of the liquid.
Make sure that the end of the suction pipe
is below the surface of the liquid.
x
x
The pump is not vented.
Fill the pump housing with water.
x
x
The pump is not vented.
Fill the pump housing with water.
x
x
Insufficient ventilation.
Make sure the work area is well ventilated.
x
x
Air leaks in.
Seal all connections.
x
Venturi
system
clogged.
Remove the venturi system and take it to an
authorised service representative.
EXPLODED VIEW