AL-KO HW 4500 FCS COMFORT - Инструкция по эксплуатации - Страница 18

en

LED displays

18

HWA 4000 / 4500 FCS

Malfunction

Cause

Rectification

Impeller blocked

Cleaning the pump.

Release the motor shaft of the impeller

with a screwdriver.

Overheating by running dry or water

which is too hot (thermal protection

switch has switched the pump off).

Check the water level on the suction

side. Allow the conveying fluid to cool

down. Repair the pump or replace it.

Pump motor does

not run

No mains voltage

Check fuses and power supply.

The suction line is not in the water.

Submerge the end of the suction line

into the water by min. 30 cm.

Suction line blockage

Remove dirt from the suction area.

Pressure line blocked off

Open the closing off devices in the

pressure line.

Pump drawing air into the suction line

Check all the connections in the suc-

tion line for leaks.

Replace seal ring.

Pump not drawing

water

Pump has been running dry.

Fill the pump housing with water.

Diaphragm is damaged.

Have the diaphragm replaced by AL-

KO Service Department.

Low air pressure in the storage vessel

Top up the air in the storage vessel.

(Set the diaphragm pressure to 1.5

bar).

Pump switches on

and off frequently.

Pump drawing air, water shortage on

suction side.

Switch pump off and allow to cool.

Suction line blockage

Clean the suction area.

Replace the filter.

Suction head too great

Reduce the suction head.

Hose diameter too small

Replace the pressure hose with one

with a larger diameter.

Flow rate too low

Water volume on the suction side to

little

Throttle back the pump to adapt the

flow rate.

ADVICE

If the faults cannot be rectified, please contact our Customer Service Department.

LED DISPLAYS

RESET