Led Displays - AL-KO HW 4000 FCS Betriebsanleitung

en
Malfunction
Pump motor does
not run
Pump not drawing
water
Pump switches on
and off frequently.
Flow rate too low
If the faults cannot be rectified, please contact our Customer Service Department.
ADVICE

LED DISPLAYS

RESET
18
Cause
Impeller blocked
Overheating by running dry or water
which is too hot (thermal protection
switch has switched the pump off).
No mains voltage
The suction line is not in the water.
Suction line blockage
Pressure line blocked off
Pump drawing air into the suction line
Pump has been running dry.
Diaphragm is damaged.
Low air pressure in the storage vessel
Pump drawing air, water shortage on
suction side.
Suction line blockage
Suction head too great
Hose diameter too small
Water volume on the suction side to
little
Rectification
Cleaning the pump.
Release the motor shaft of the impeller
with a screwdriver.
Check the water level on the suction
side. Allow the conveying fluid to cool
down. Repair the pump or replace it.
Check fuses and power supply.
Submerge the end of the suction line
into the water by min. 30 cm.
Remove dirt from the suction area.
Open the closing off devices in the
pressure line.
Check all the connections in the suc-
tion line for leaks.
Replace seal ring.
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.
Clean the suction area.
Replace the filter.
Reduce the suction head.
Replace the pressure hose with one
with a larger diameter.
Throttle back the pump to adapt the
flow rate.
HWA 4000 / 4500 FCS
LED displays