Deutsch
5.962-786.0 Rev. 05 (06/13)
49
The entire questionnaire HDC for central multi-
pump high-pressure systems is available online
under "Kärcher Inside".
For the selection of the pump position the following
conditions must be considered:
Central position of the HD supply unit (utility room)
in order to keep costs low.
For noise control purposes, insulate utility room
against sound and do not locate it in close vicinity
to the recreation area for employees.
The HD supply unit must be set up at a frost-pro-
tected place.
For a reliable planning of the pipe layout a ground
plan is required by which possible obstacles can al-
ready be identified in advance. Short ways are pref-
erable.
As the HD pipe lines should always be kept as short
as possible, pay attention to a favourable location of
the extraction points. The aim is to cover the entire
area to be cleaned with as few extraction points as
possible. Approx. 15-20 metres of hose can be taken
as a benchmark for each extraction point. It must be
considered that the extraction points are mostly locat-
ed at a height of 1 metre. This means that approx. 1
metre of the high-pressure hose is lost!
Based on the pipe layout (planned way), the distanc-
es between the relevant connection points are estab-
lished (perpendicular pipes are to be considered).
몇
Warning
Risk of damage due to vibrations.
Do not directly case vibrating components (HD
pump). Use flexible connecting hoses (HD hoses)
for the connection with the pipe system.
When connecting components to the pipe network
the following criteria must be observed:
Accessibility for the user
Components that require frequent operation (e.g.
remote controls, etc.) should be located centrally
and easily accessible.
Maintenance accessibility
Ensure that even after the installation of compo-
nents, pipes and connection cables there is still
enough room for maintenance work.
Occupational safety
When positioning / installing the components, both
during the installation phase as well as for the later
operation, observe the local regulations concern-
ing occupational safety (also explosion protec-
tion!).
The standard pipe diameter is determined depending
on the flow velocity and flow rate. Based on the infor-
mation about the simultaneously used extraction
points and the resulting delivery rate [l/h] obtained
from 6.1 (questionnaire), a first rough classification of
the pipe dimensioning can be derived from table 2.
This classification serves as a reference value only
and must be fine-tuned with the knowledge obtained
in the further course of Chapter 6.
Table 2
Note
The HD pipes are to be planned efficiently in due con-
sideration of the overall plant. Not all determined pipe
sizes with a relatively short length are reasonable
when considering the costs. Here a reduction by two
to three diameters is more economical in larger quan-
tities and can be installed within a shorter period of
time.
몇
Warning
Risk of corrosion!
Do not use galvanised steel tubes for domestic in-
stallations with copper lines
.
The pipe dimensions are calculated depending on
the following sizes:
Flow volume
6.2
Site selection for the high-pressure
supply unit
6.3
Determination of the resulting pipe
lengths
6.4
Pipe dimensioning
Delivery rate
[l/h]
Nominal width
of the
pipeline
[mm] [inches]
Nominal
width of the
hose line
1000
DN 15
1/2
DN 8
2000
DN 12
3000
DN 20
3/4
4000
DN 16
5000
DN 25
1
6000
DN 20
7000
8000
DN 32
1 1/4
12000
DN 25