AL-KO HW 800/MC Manual Del Usuario página 11

M
ALFUNCTIONS
Before you attempt to remedy any malfunction of your domestic water system, pull the plug to
prevent injury or death due to electrocution!
What is wrong? What is the possible reason?
Motor does not run. Impeller is blocked.
Thermal switch has switched off.
No power.
System runs but does Suction hose is not immersed in the
not pump out liquid. liquid to be pumped.
Suction hose is blocked.
Suction height is too great.
Air is trapped in the suction hose.
Pump is dry.
System is only pumping Suction hose is blocked.
out liquid very slowly or
Suction height is too great.
weakly.
Pressure hose diametre is too small.
Pumping height is too great.
Pump does not run Air pressure in reservoir is too low.
reliably.
If you are unable to remedy a malfunction, please call the AL-KO service centre nearest you.
What to do:
Clean the pump.
Wait until the thermal switch has
automatically switched the pump on
again. Check the temperature of the
liquid. Have the pump checked.
Have the power supply checked by a
qualified electrician.
Make sure that the suction hose is at
least 30 cm beneath the surface.
Clear the blockage.
Lower suction height.
Check for leaks in the suction hose.
Fill the pump with water.
Clear the blockage.
Lower suction height.
Attach a pressure hose with a larger
diametre.
Lower pumping height.
Check the air pressure in the
reservoir at the valve (5) and correct
to about 1.5 bar if necessary.
GB
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