AL-KO SUB 6500 Betriebsanleitung Seite 13

Help in case of malfunctions
Malfunction
Motor does not
run.
Pump running but
does not feed.
Feed rate too low
ADVICE
If the faults cannot be rectified, please contact our customer service department.
467769_f
Possible cause
Impeller blocked.
Thermal protection switch has swit-
ched 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 hou-
sing.
Wait until the thermal protection switch
on the immersion pump switches on
again. Take note of the maximum tem-
perature of the conveying medium.
Have the immersion pump inspected.
Check the fuses, have the power sup-
ply checked by a qualified electrician.
Send the immersion pump to an AL-
KO 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!
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