Help In Case Of Malfunction - AL-KO HW 600 ECO Betriebsanleitung

Help in case of malfunction

10 HELP IN CASE OF MALFUNCTION
DANGER!
Danger of electric shock.
When working on the pump, there is the risk of receiving an
electric shock.
■
Disconnect the mains plug before correcting any malfunc-
tions!
■
Faults in the electrical system must be rectified by a quali-
fied electrician.
Malfunction
Engine does not run.
Pump running but does not
feed.
Pump switches on and off
frequently.
Pump does not switch off
with a closed pressure line.
469929_a
Possible cause
Impeller blocked
Thermal protection switch has
switched off.
No mains power.
Water level too low.
Pump drawing air into the suc-
tion line.
Pump drawing in air.
Blockage on the suction side.
Pressure line closed off.
Pump has been running dry.
Diaphragm is damaged.
Low air pressure in the storage
vessel.
Pump drawing air, water short-
age on suction side.
Remedy
Cleaning the pump. Release the mo-
tor shaft of the impeller with a screw-
driver.
Check the water level on the suction
side. Allow the conveying fluid to
cool down. Repair or replace the
pump.
Check fuses, have the power supply
checked by a qualified electrician.
Submerge the suction line deeper.
Check all the connections of the
suction line for leaks.
Replace seal ring.
Check all connections and the cover
on the filter for leaks.
Remove dirt from the suction area.
Open the pressure lone.
Fill the pump housing with water.
Have the diaphragm replaced by AL-
KO Service Department.
Top up the air in the storage vessel.
(Set the diaphragm pressure to 1.5
bar).
Switch pump off and allow to cool.
25