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The appliance is factory set to a pressure of
8 MPa (HDC 20/8) or 14 MPa (HDC 20/16).
1 Adjustment screw for high pressure
2 Lock nut for high pressure
3 Spindle of the pressure/quantity regula-
tion
4 Adjustment screw for low pressure
5 Locknut for low pressure
6 Housing of the overflow valve
Fasten the test manometer (part no.
4.742-025) to the high-pressure con-
nection.
Connect the high-pressure hose with
the servo press hand spray gun to the
test manometer.
Rotate the servo press to the "MIN" po-
sition, open the hand spray gun and let
the device run.
Rotate the spindle of the pressure/
quantity regulation to the stop.
Loosen the locknut for high pressure.
Turn the adjustment screw high pres-
sure so that the opening pressure of the
overflow valve plus 1.5 MPa is reached
on the test manometer.
Note:
If this screw is turned clockwise, the
pressure is increased; and if it is turned
counter-clockwise, the pressure is de-
creased.
Secure the adjustment screw for high
pressure with the locknut.
Check working pressure and delivery
rate.
Seal the adjustment screw for high
pressure and the lock nut with locking
paint.
We hereby declare that the machine de-
scribed below complies with the relevant
basic safety and health requirements of the
EU Directives, both in its basic design and
construction as well as in the version put
into circulation by us. This declaration shall
cease to be valid if the machine is modified
without our prior approval.
5.957-926
The undersigned act on behalf and under
the power of attorney of the company man-
agement.
Authorised Documentation Representative
S. Reiser
Alfred Kärcher GmbH Co. KG
Alfred-Kärcher-Str. 28 - 40
71364 Winnenden (Germany)
Phone: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2016/04/01
The warranty terms published by our com-
petent sales company are applicable in
each country. We will repair potential fail-
ures of the appliance within the warranty
period free of charge, provided that such
failure is caused by faulty material or de-
fects in fabrication.
Setting the maximum working
pressure on the overflow valve
Adjusting the overflow valve
EU Declaration of Conformity
Product:
High pressure cleaner
Type:
1.509-xxx
Type:
2.509-xxx
Relevant EU Directives
2006/42/EC (+2009/127/EC)
2014/30/EU
Applied harmonized standards
EN 60335–1
EN 60335–2–79
EN 55014–1: 2006+A1: 2009+A2: 2011
EN 55014–2: 2015
EN 61000–6–4
EN 61000–6–2: 2005
EN 61000–3–12: 2011
HDC 20/8, HDC 20/8 H:
EN 61000–3–3: 2013
HDC 20/16, HDC 20/16 H:
EN 61000–3–11: 2000
CEO
Head of Approbation
Warranty
29
EN