Permanent Installation; Operation; Starting Operation - Kärcher BP 3 Home & Garden Manual Del Usuario

2. Fill the pump via the filling nozzle, all the way to the
edge.
Illustration F
3. Screw the cap tightly onto the filling nozzle, either
manually or using a screwdriver shaft.
4. If present, open the stop valves in the pressure line
(see chapter Pressure balance and pressure relief).

Permanent installation

1. Connect the suction hose and pressure line (see
chapter Mobile use).
Use screw connections and not quick couplings in a
permanent installation.
2. Fill the pump (see chapter Filling the pump).
Fastening the pump
In a permanent installation, the pump can be screwed to
a suitable surface.
1. Pull out and rotate the rubber feet on both sides of
the casing.
Illustration G
2. Insert the rubber feet into the casing.
3. Screw the pump tightly to a level surface using suit-
able screws.
Pressure balance and pressure relief
For a permanent installation we recommend installing
flexible components, such as e.g. a flexible pressure
equalization hose, on the pressure side (see chapter
Accessories and spare parts). This has the following ad-
vantages:
● Greater flexibility in erection and commissioning
● Sound reduction since no vibration is transmitted in
to the pipes of the house water system
● The pump switches less often in the case of minor
leaks
We recommend installing a stop valve (not included in
the scope of delivery) between the pump and pressure
line to simplify draining and pressure relief in the sys-
tem. Closing the stop cock prevents water from flowing
out of the pressure line when the pump is drained.
If there are increased drops in pressure due to leaks in
the house system the pump regularly switches on with-
out dispensing water. In this case we recommend in-
stalling a pressure equalization container (see chapter
Accessories and spare parts).
10

Starting operation

1. Plug the mains plug into the socket.
2. Switch the device on with the ON/OFF switch.
Illustration E
 Use the "I/On" switch setting for Manual opera-
tion.
 Use the "Auto" switch setting for Automatic mode
(see also chapter Functional principle of the
pump in Automatic mode).
Note
The ON/OFF switch can be conveniently operated by
foot.
3. Lift the pressure hose approx. 1 m to reduce the
suction time.
4. Wait until the pump simultaneously sucks and deliv-
ers.
If the water supply is too low the dry run fuse switches
the device off (see chapter Dry run fuse).
Functional principle of the pump in
In Automatic mode, the house and garden pumps auto-
matically maintain the pressure:
● The pump starts when water is dispensed and the
pressure falls below approx. 0.13 MPa (1.3 bar).
● The pump continues running when the flow rate is
greater than approx. 60 l/h.
● Pressure builds up in the system again when water
dispensing stops. The pump continues running for a
short after-running time and then enters standby
mode.
Optimising the flow rate
The flow rate is further increased:
● The lower the delivery height is
● The greater the diameter of the hose used is
● The shorter the hose used is
● The smaller the pressure loss caused by the con-
nected up accessories
m
70
60
50
40
30
20
10
1000
English

Operation

Automatic mode
10m = 0,1MPa (1bar)
3000 4000 5000
2000
I/h
6000