Table of Contents

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HDS 7/12 M, HDS 8/18 M,
HDS 9/18 M, HDS 10/20 M,
HDS 12/18 S, HDS 13/20 S
Service Manual
1
English 5.906-432.0 Rev. 00 (06/15)

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Summarization of Contents

Safety Instructions
Hazard Levels
Defines hazard levels (DANGER, WARNING, CAUTION).
Technical Features
General
Overview of the high-pressure cleaner features.
Connection Performance of Appliance
Details power input and output specifications.
Pump
Describes the pump's construction and specifications.
Electronics System
Lists electronic components and their functions.
Parts of the System
Front View
Identifies components visible from the front.
View from the Back (Device without Hose Reel)
Identifies components visible from the back.
Operator Console
Details the control panel and its components.
Control Panel with LED Indicator
Details the control panel and LED indicators.
Control Panel, View from the Inside
Shows internal view of the control panel components.
Printed Circuit Board, Control Panel
Details the control panel's printed circuit board.
Function
Operating Displays
Explains the meaning of operating displays.
Service Switch
Explanation and use of the service switch.
Detergent Dosing Valve
Description of the detergent dosing valve.
Pump
Description of the pump assembly.
Function Water Shortage Safeguard and Dry-Run Protection
Explains water shortage and dry-run protection functions.
Function of Safety Valve
Explains the function of the safety valve.
Hand Spraygun
Description and function of the hand spraygun.
Pressure and Volume Regulation
How pressure and volume are regulated.
Functional Description of Pressure Switch
Explains pressure switch operation in different states.
Appliance is Switched Off
Pressure switch function when appliance is off.
The Appliance is Switched On and the Gun is Open
Pressure switch function when appliance is on and gun is open.
Basic Settings and Service Procedures
Remove the Hose Drum
Steps to remove the hose drum.
Adjust Safety Valve
Steps to adjust the safety valve.
Service Functions with LED Display
How to use service functions via LED display.
Error Memory
Reading and interpreting the error memory.
Reset of the Maintenances
Procedures for resetting maintenance intervals.
Settings, Burner
Adjusting burner settings for water temperature and fuel pressure.
Adjusting the Working Pressure with the Rotary Regulator on the Gun
Procedure for adjusting working pressure with gun regulator.
Setting the Maximum Working Pressure
Procedure to set the maximum working pressure.
Setting the Minimum Working Pressure
Procedure to set the minimum working pressure.
Troubleshooting
Error Messages
Explains various error messages and their meanings.
Error Message with Service Demand
Error messages requiring service intervention.
Technical Specifications
Tightening Torques
Specifies torque values for various components.

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