Defect/Causes
A - At starting, the motor does not run
B - The motor starter thermal relay intervenes when
voltage is connected
C - The thermal relay sometimes intervenes without any
special reason
D - The thermal relay intervention has not occurred by the
machine does not work
E - The machine delivery is not constant
F - The machine runs but does not deliver fluid
G - At stop the machine runs in the opposite direction
Only for EU countries
Do not dispose of electric tools together with household waste material!
In observance of European Directive 2002/96/EC on waste electrical and electronic equipment and its
implementation in accordance with national law, electric tools that have reached the end of their life must
be collected separately and returned to an environmentally compatible recycling facility.
Defect
1 - Mains voltage is cut-off
2 - Blown fuse
3 - Intervention of the thermal relay
4 - Either the motor starter contacts do not conduct or the coil
is faulty
5 - The auxiliary circuit fuses are blown
6 - The machine motor is faulty
1 - Blown fuse
2 - The motor starter contacts are faulty
3 - The electric connections are faulty
4 - The motor windings are faulty
5 - The machine is mechanically blocked
6 - The thermal relay calibration is too low
1 - The thermal relay calibration is too low
2 - Mains voltage periodically lacks
3 - During peak hours mains voltage is too low
1 - Mains voltage is cut-of
2 - Blow fuse
3 - Either the motor starter contacts do not conduct or the coil
is faulty
4 - The auxiliary circuit fuses are blown
1 - The suction pipe is undersized
2 - The availability of sucked fluid is not enough
3 - The fluid level is too low
4 - The head pressure is not enough
5 - The suction pipe is partially obstructed
1 - The suction pipe or the pump are obstructed
2 - The foot valve (or check valve) is blocked in closed position
3 - Leakage is present in the suction pipe
4 - Air is present in the suction pipe or in the pump
1 - The suction pipe or the pump are obstructed
2 - The foot valve (or check valve) is faulty
3 - The foot valve (or check valve) is blocked in partial or total
opening position
Causes