Maintenance And Care - AL-KO HW 3000 Betriebsanleitung

Startup
Switch the pump off
1. Remove the mains plug from the socket
2. Close one of the closing off devices (valve,
spray nozzle, water cock) in the pressure line
(Fig. B -10).
If no suction takes place within a period
ADVICE
of 180 seconds, the garden pump au-
tomatically goes to "fault" condition and
switches off.
CAUTION!
Danger of injury from hot water
In extended use against the closed pres-
sure side (>10 min.), the water in the
pump can be severely heated up and can
be emitted in an uncontrolled manner!
Isolate the unit from the mains and allow
the pump and water to cool down. Start
the unit again only after all the faults have
been rectified!
The risk of injury from hot water can arise if:
the installation is not correct
the pressure side is closed off
there is a lack of water in the suction line, or if
the pressure switch is defective.
Procedure
1. Isolate the unit from the mains and allow the
pump and water to cool down.
2. Check the unit, the installation and water le-
vel.
3. Start the unit again only after all the faults
have been rectified!

MAINTENANCE AND CARE

Check the air pressure in the storage vessel.
CAUTION!
Check the air pressure in the storage
vessel at regular intervals. It must not fall
below 1.5 bar (see section "Commissio-
ning: Checking the air pressure in the
storage vessel").
1. Isolate the house water system from the
mains and secure against switching on again.
The pump stops automatically.
2. Open one of the closing off devices (valve,
spray nozzle, water cock) in the pressure line
(Fig. B -10).
477 032_a
3. Drain the water off until the pump is comple-
tely empty.
4. Open the cover on the back of the storage
vessel.
5. Check the air pressure at the valve with an air
pump or a tyre pump with pressure indicator.
If necessary, correct the air pressure.
6. Then close the cover again on the back of the
storage vessel.
7. Start the house water system again.
Cleaning the pump
After conveying swimming pool water
ADVICE
containing chlorine or fluids that leave a
residue, the pump must be flushed out
with clear water.
1. Isolate the unit from the mains and secure
against switching on again.
The pump stops automatically.
2. Flush the pump out with clear water.
3. Insert the mains plug into the plug socket.
4. Switch the house water system on with the
on /off switch (Fig. A -6).
The pump starts automatically.
Remove blockages
1. Isolate the unit from the mains and secure
against switching on again.
2. Remove the suction hose from pump inlet.
3. Connect the pressure hose to the water sup-
ply.
4. Allow water to run through the pump housing
until the blockage is removed.
5. Check that the pump is running freely by swit-
ching it on briefly.
6. Start the house water system again as descri-
bed.
Pressure Switch
The switch-on and switch-off pressure of
ADVICE
the house water system is pre-set in the
factory. Any changes that may be requi-
red should only be made by the specia-
list dealer.
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