Mega MQ 250 Manuel D'instructions page 7

CAUTION!
Disconnect the mains plug before any fault rectification work! Faults in the electrical
system must be rectified by a qualified electrician.
Malfunction
Motor does not
run.
Pump running but
does not feed.
Feed rate too low
If the faults cannot be rectified, please contact our customer service department.
HELP IN CASE OF MALFUNCTIONS
Possible cause
Impeller blocked.
Thermal protection switch
has switched off.
No mains power.
Float switch does not
switch off when the water
level rises.
Air in pump housing.
Blockage on the suction
side.
Pressure line closed off.
Pressure hose kinked.
Hose diameter too small.
Blockage on the suction
side.
Feed head to high.
Solution
Remove dirt in the suction area.
Clean with a suitable tool
through the opening at the back
of the motor housing.
Wait until the thermal protection
switch on the immersion pump
switches on again. Take note of
the maximum temperature of the
conveying medium. Have the
immersion pump inspected.
Check the fuses, have the
power supply checked by a
qualified electrician.
Send the immersion pump to a
service facility.
Vent the immersion pump by
holding it at an angle.
Remove dirt in the suction area.
Open the pressure line.
Extend the pressure hose.
Use a bigger pressure hose.
Remove dirt in the suction area.
Observe max. Feed head, see
technical data!
GB 05