Preface; Safety Instructions; Hazard Levels; Technical Features - Kärcher HDS 7/12 M Service Manual

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Preface

Good service work requires extensive and practice-orient-
ed training as well as well-structured training materials.
Hence we offer regular basic and advanced training pro-
grammes covering the entire product range for all service
engineers.
In addition to this, we also prepare service manuals for im-
portant appliances - these can be initially used as instruc-
tion guides and later on as reference guides.
Apart from this, we also regular information about product
enhancements and their servicing.
If you should require supplements, have corrections or
questions regarding this document, please address these
citing the following subject to:
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Safety instructions

3.1

Hazard levels

DANGER
Immediate danger that can cause severe injury or even
death.
WARNING
Possible hazardous situation that could lead to severe in-
jury or even death.
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Technical Features

4.1

General

Mobile hot water high-pressure cleaners in various perfor-
mance classes for commercial use.
High performance burner with upright heating coal and
–
continuous ignition
Built-in calcification protection
–
4.2

Connection performance of appliance

3,4 kW (HDS 7/12-4 M/MX)
–
5,5 kW (HDS 8/18-4 M/MX)
–
6,4 kW (HDS 9/18-4 M/MX)
–
4.3

Pump

3 piston axial pump with stainless steel piston; some
–
models feature ceramic coating
Cylinder head made of brass
–
High-pressure and suction valve faces made of stain-
–
less steel
Working pressure: 3-20 MPa (30-200 bar)
–
4.4

Electronics system

Program selection switch
–
Flame sensor (option)
–
Water temperature regulation with temperature sensor
–
Exhaust temperature monitor
–
Water shortage safeguard
–
Dry-run protection for the pump
–
4.5

Detergent

2 detergent tanks
–
Detergent inlet with fine filter
–
international-service@de.kaercher.com
Subject: Fall 105756
The responsible product specialist will take care of your is-
sue.
Copying and duplication of texts and diagrams as well
as third-party access to this information is permitted
only with the explicit permission of the company:
Alfred Kärcher GmbH & Co. KG
Postfach 160
71349 Winnenden (Germany)
www.kaercher.com
CAUTION
Possible hazardous situation that could lead to mild injury
to persons or damage to property.
Steam operation (water temperatures up to 155 °C)
–
with separate steam nozzle
Burner blower and fuel pump directly on the electric
–
motor
ECO - mode for 60°C (+/- 9 K)
–
7,8 kW (HDS 10/20-4 M/MX)
–
8,4 kW (HDS 12/18-4 S/SX)
–
9,3 kW (HDS 13/20-4 S/SX)
–
Water quantity: 350-1,300 l/h
–
Manometer
–
Overflow valve with pressure and quantity regulation
–
Float tank
–
Safety valve
–
Water fine filter
–
Level sensor for fuel, liquid softener and detergent
–
tanks (optional in some cases)
Operating hour counter
–
Error memory
–
Component tests
–
Fault monitoring
–
Monitoring of rotation direction
–
Dosing valve on the device with automatic clear rinsing
–
in zero position.
Detergent with low pressure and high pressure
–
English 5.906-432.0 Rev. 00 (06/15)
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