Kärcher HDS 3.9/30 User Manual

9.800-080.0-AB05/30/17
OPERATOR’S MAN U AL
To locate your local Kärcher Commercial Pressure Washer Dealer nearest you,
visit www.karchercommercial.com
MODEL # ORDER #
HDS 3.9/30 Pe Cage 1.575-600.0
HDS 4.8/30 Pe Cage 1.575-601.0
HDS 4.8/30 Pe Cage 1.575-602.0
HDS 4.7/35 Pe Cage 1.575-603.0
MODEL # ORDER #
HDS 4.7/35 Pe Cage
HDS 5.6/35 Pe Cage
1.575-604.0
1.575-605.0
HDS 5.6/35 Pe Cage 1.575-606.0
98000800-1
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.
D
AN
G
ER
8.92
3
-
560
.0

Kärcher HDS 3.9/30 Specifications

General

Brand	Kärcher
Model	HDS 3.9/30
Category	Pressure Washer
Language	English

Summary

Introduction and Safety Information

Owner and User Responsibility

Outlines owner's role in understanding manual and machine operation.

General Operational Safety

Covers reading manual, alertness, controls, and safe operating area.

Hazard Warnings

Consolidates electrical, noise, PPE, flammable liquids, fire, and explosion risks.

Operating Safety Precautions

Operational Hazards

Covers hot surfaces, fuel safety, supervision, and stability.

High Pressure & Environmental Safety

Addresses high pressure risks, freeze protection, water inlet, and ventilation.

Continued Safety Guidelines

Ladder Use and Fluid Restrictions

Caution with ladders and prohibition of certain fluids.

Pump Operation & Hose Care

Warnings on pump dry run, gun closure, and hose protection.

Heating Coil & Operator Condition

Safety for heating coil, and operator fatigue/influence.

Component Identification

Key Components Overview

Identifies pump, starter, spray gun, unloader valve, and hose.

Control & Safety Features

Explains adjustable thermostat and wand connection.

Assembly Instructions

Hose and Wand Assembly

Attaching the high-pressure hose to the spray gun and wand.

Oil Level Check

Checking pump oil level using dipstick or window.

Water Supply Connection

Connecting garden hose to water source and inlet filter.

Battery Installation

Information on battery purchase and connection.

Operating Instructions

Engine Preparation

Checking oil level and filling gas tank with unleaded gasoline.

Water and System Priming

Connecting water, priming the system, and eliminating trapped pressure.

Engine Starting Procedure

Using the choke lever and starter grip for engine ignition.

Operating Instructions Continued

Electric Start Operation

Turning the engine switch and key to start the engine.

Burner and Thermostat Settings

Activating the burner and setting the thermostat temperature.

Steam Option Operation

Using the steam valve and thermostat for steam generation.

Spray Gun Safety Latch Warning

Warning about nozzle replacement safety latch.

Detergents and Cleaning Techniques

Detergent Usage Guidelines

Proper selection and use of detergents, warning of harmful types.

Cleaning and Rinsing Process

Step-by-step cleaning tips and rinsing procedures.

Thermal Pump Protection

Explanation of the pump protector's function during operation.

Shutting Down and Clean-Up

Shutdown Procedure

Steps for flushing detergent, turning off engine and water.

Pressure Release and Disconnection

Releasing pressure and disconnecting hoses.

Storage Recommendations

Guidelines for storing the pressure washer safely, including freeze protection.

Extended Storage & Engine Maintenance

Procedures for storing for over a month and engine upkeep.

Maintenance

Preventative Maintenance

Routine checks and actions to maintain the machine's performance.

Winterizing Procedure

Steps to protect the machine from freezing damage during cold weather.

Component Specific Maintenance

Details on thermostat, pump oil, and coil cleaning.

Maintenance Continued

Coil Maintenance

Procedures for deliming and removing soot from coils.

Fuel and System Checks

Fuel guidelines, solenoid function, and pressure adjustment.

Burner Nozzle and Electrodes

Maintenance for burner nozzle and electrode settings.

Maintenance Continued

Kärcher ClearFire Oil Burner

Information specific to the ClearFire oil burner.

Burner Air Adjustment

Procedure for adjusting air bands for optimal combustion.

Coil Removal and Reinstallation

Steps for removing and reinstalling the heating coil.

Troubleshooting Guide

Low Operating Pressure Issues

Common causes and solutions for low pressure.

Burner Ignition Failures

Troubleshooting steps when the burner will not light.

Troubleshooting Continued

Burner Ignition & Pressure Issues

Further causes for burner failure and fluctuating pressure.

Smoking Burner Unit

Troubleshooting causes for smoke during operation or at cold-start.

Troubleshooting Continued

Water Temperature Problems

Issues related to low or too-hot water temperature.

Pump & Oil Issues

Problems with noisy pumps, water in oil, and drips.

Troubleshooting Continued

Oil Leaks & Vibration

Causes for oil dripping and excessive vibration.

Detergent & Pressure Issues

Problems with detergent draw and low pump pressure.

Motor & Relief Valve Issues

Causes for burner motor not running and relief valve leaks.

Preventative Maintenance

Oil Change & Operating Hours Log

Table for recording oil changes and operating hours.

Maintenance Schedule Overview

Table detailing maintenance operations and their frequency.

Exploded View

Exploded View

Exploded View Parts List

Exploded View Parts List

Exploded View Parts List

Float Tank Exploded View

Control Panel Exploded View

Control Panel Parts List

Hose & Spray Gun Assembly

Specifications

Kärcher ClearFire Burner Specs

Table detailing specifications for Kärcher ClearFire burners.

Specifications

Pump and Engine Parts Specs

Table listing pump and engine part specifications.

Specifications

Engine & Generator Specifications

Details engine and generator pulley, bushing, and belt specs.

ClearFire Burner "S" Replacement Parts

ClearFire Burner "S" Parts List

ClearFire Burner "M/L" Replacement Parts

ClearFire Burner "M/L" Replacement Parts

KT.2 Series Pump Exploded View

KT.2 Series Pump Parts List

Pump Kit Numbers and Service

Lists kit numbers and the parts/cylinders they service.

VRT3 Unloader View & Parts List

Unloader Adjustment Procedure

Step-by-step guide for adjusting the unloader pressure.