AL-KO 112 820, Manual

Page: 13 / 120

Help in case of malfunctions
467769_ f 13
Malfunction Possible cause Solution
Impeller blocked. Remove dirt in the suction area.
Clean with a suitable tool through the
opening at the back of the motor hou-
sing.
Thermal protection switch has swit-
ched off.
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.
No mains power. Check the fuses, have the power sup-
ply checked by a qualified electrician.
Motor does not
run.
Float switch does not switch off when
the water level rises.
Send the immersion pump to an AL-
KO service facility.
Air in pump housing. Vent the immersion pump by holding it
at an angle.
Blockage on the suction side. Remove dirt in the suction area.
Pressure line closed off. Open the pressure line.
Pump running but
does not feed.
Pressure hose kinked. Extend the pressure hose.
Hose diameter too small. Use a bigger pressure hose.
Blockage on the suction side. Remove dirt in the suction area.
Feed rate too low
Feed head to high. Observe max. feed head, see technical
data!
ADVICE
If the faults cannot be rectified, please contact our customer service department.