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3. If the water carries a small amount of sand, a
pre-filter must be installed between suction
line and pump inlet. Ask your expert dealer
about this.
4. Always lay the suction line with an upward
gradient.
NOTE
If the suction head is more than 4 m, a
suction hose with a diameter larger than
1" must be installed. We recommend the
use of an AL-KO suction unit with suc-
tion hose, suction filter and flow-back
stop. Ask your specialist dealer.
4.3
Mounting the pressure line (2)
1. Screw connecting nipple (13) with seal (14)
into pump outlet (3).
2. Screw elbow nipple (11) with seal (12) onto
connecting nipple (13) and turn the elbow
nipple in the required direction.
3. Connect pressure line (10) to elbow nipple
(11).
4. Open all shut-off devices (valves, spray
nozzles, water cock) in the pressure line.
5 START-UP
5.1
Check the air pressure in the storage
vessel
IMPORTANT!
Danger of damage to the
device
The pump may only be op-
erated with a diaphragm
storage pressure of 1.5 -
1.7 bar in the storage ves-
sel. Other diaphragm stor-
age pressures can cause
equipment damage.
■
Check the air pressure
at the valve on the back
of the storage vessel
before commissioning.
22
1. Open the cover on the rear of the storage
vessel.
2. Check the air pressure at the valve using an
air pump or tyre filler equipped with a pres-
sure gauge.
3. Correct the air pressure to 1.5 - 1.7 bar, if ne-
cessary.
4. Close the cover on the rear of the storage
vessel again.
5. Putting the pump into operation.
5.2
Fill the pump
IMPORTANT!
Danger of damage to the
device
Dry running will destroy
the pump!
■
The pump must be filled
with water up to the
overflow before each
use so that it can draw
water immediately.
1. Open filling screw (2). (Not for INOX models)
2. Pour in water through the filling screw until
the pump housing is full.
3. Screw in filling screw. (Not for INOX models)
6 OPERATION
6.1
Switching the pump on
1. Open all shut-off devices (valve, spray
nozzle, water cock) in the pressure line (10).
2. Insert the plug of the mains cable into the
power socket. The pumps starts to pump.
3. Close the shut-off device in the pressure line
when there are no more air bubbles in the es-
caping water.
■
The pump switches off automatically after
building up the pressure and reaching the
switch-off pressure.
■
The pump is ready for operation.
HW 600 ECO | HWI 600 ECO
Start-up
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