Device Description - AL-KO 112 478 Mode D'emploi

Improper use
The manometric switch must not be used in
permanent operation. It is not suitable for the
conveying of:

drinking water

salt water

foodstuffs

sewage water

aggressive media, chemicals

corrosive, flammable, explosive or gaseous
liquids

liquids that are warmer than 35 °C

water containing sand and abrasive liquids.

Device description

Manometric switch (Figure A)
1 Connection cable to pump
2 Supply cable with mains plug
3 Manometer
4 Pressure line connection (1" outer thread)
5 "Power" LED
"Failure" LED
6
"On" LED
7
8 "Reset" button
9 Connection to pump (1" outer thread)
Scope of delivery
The manometric switch is delivered complete
with two connection cables.
The installation material for connection to a
pump is not part of the scope of delivery.
Functions of the manometric switch
Automatic operation of the pump
When opening a latch in the pressure line, the
pump is automatically switched on by the mano-
metric switch. If the latch is closed, the mano-
metric switch switches the pump off again, after
achieving the maximum pump pressure.
Protection of the pump from dry running
The manometric switch is equipped with a safety
device, which switches the pump off with insuffi-
cient water.
The switching off takes place after approx. 45 s
and is signalised by illumination of the "Failure"
LED.
Constant flow rate and pressure
The manometric switch ensures a constant flow
rate with constant pressure.
Translation of original user instructions
Functional range of the manometric switch
Switch-on pressure approx. 1.8 bar
Switch-off pressure max. 8.0 bar (or maximum
pressure of the pump)
Device setup, start-up
The manometric switch is attached to the pump
output (pressure line connection). The manomet-
ric switch has a 1" outer thread for connection to
the pump.
The manometric switch must only be installed
vertically. If direct attachment to the pump outlet
is not possible for space reasons, a suitable
connector must be used.
The manometric switch can be installed at
any position on the pressure line.
For connecting the pressure line, there is a
connection on the manometric switch with a 1"
outer thread.
In order to ensure operation of the man-
ometric switch, a preliminary filter must be
installed in the suction line.
Initial start-up
1. Fill pump and suction line up to overflow.
The pump can not be filled over the man-
ometric switch, as a non-return valve is
installed toward the pump.
2. Open a latch available in the pressure line
(valve, spray jet, water tap).
3. Attach the mains plug of the supply cable to
the socket. The pump will begin to operate.
With initial start-up, the pump automatically
switches off after approx. 10 sec. After this,
the "RESET" (8) button must be pressed
down until the pump conveys water. If the
"RESET" button is released before the
pump conveys water, the pump automati-
cally switches off, for safety reasons. If the
suction process should take longer than 2
minutes, fill the pump and suction hose
again, check the screws for impermeability
and repeat
4. Close the latch in the pressure line when
water has flowed out of the line without
trapped air. The manometric switch will au-
tomatically switch the pump off after approx.
15 s. The automatic domestic water system
is ready for operation.
EN
the process.
EN 2