Kärcher Professional SG 4/4 Service Manual
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Kärcher Professional SG 4/4 Service Manual

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SG 4/4
Service Manual
1
English 5.906-732.0 Rev. 00 (12/14)

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Summary of Contents for Kärcher Professional SG 4/4

  • Page 1 SG 4/4 Service Manual English 5.906-732.0 Rev. 00 (12/14)

  • Page 2: Table Of Contents

    Preface Safety instructions Hazard levels Description in this service manual Service groups Functional group structure Textual description Technical Features Type plate AB Service group setup 010 Safety information General 020 Overview 030 Function 040 Service activities ABRD Uninstall / install wheels ABGE Uninstalling / installing cover ABNT Uninstalling and installing the refill tank 050 Maintenance and inspection...
  • Page 3 AHSH Uninstalling / installing switch for heating AHKL Uninstalling / installing indicator lights AHTR Uninstalling / installing transformer AHAE Uninstalling / installing switch-off electronics 050 Maintenance and inspection 060 Error diagnosis 070 Peculiarities/ others Technical specifications Circuit diagram Troubleshooting Measured values 010 Safety information Voltage measurement English 5.906-732.0 Rev.

  • Page 4: Preface

    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.

  • Page 5: Description In This Service Manual

    Description in this service manual Service groups Example: Install/uninstall ANRA wheel axle Install/uninstall wheel axle Service group Component Activity Observe the allocation of service groups to the appliance components in the overview diagram in Chapter "Overview over the service and functional groups". Functional group structure Safety instructions Overview...

  • Page 6: Ab Service Group Setup

    AB Service group setup 010 Safety information General Observe general safety information! Service and maintenance tasks may only be performed by qualified and specially trained specialists. DANGER Switch off the appliance and, in case of appliances con- – nected to the mains, pull out the power cord before cleaning and performing any maintenance tasks on the machine.

  • Page 7: 040 Service Activities

    040 Service activities Note Unless otherwise described, the installation takes place in reverse order. ABRD Uninstall / install wheels 1 Wheel 2 Bolts 3 Wheel cap  Remove the wheel cover.  Remove the bolt.  Remove wheel. ABGE Uninstalling / installing cover ...

  • Page 8: Abnt Uninstalling And Installing The Refill Tank

    1 Cover 2 Thermostat  Gently raise the front cover.  Remove the thermostat.  Put appliance cover aside. Installation information Grease the thermostat with heat-conducting paste. Lay lines free of kinks. Uninstall the rotary knobs for easier installation of the cov- Perform a function test.

  • Page 9: 050 Maintenance And Inspection

    1 Cover 2 Pipes  Lift the cover.  Disconnect lines.  Remove cover. 1 Connector  Disconnect the connectors. 1 Hose clamps 2 Hose 3 Water pump 4 Tank  Loosen the hose clamps.  Pull out the hoses. ...

  • Page 10: Ad Service Group Steam System

    AD Service group steam system 010 Safety information General Observe general safety information! Allow the appliance to cool down prior to performing – Service and maintenance tasks may only be performed by service tasks. qualified and specially trained specialists. DANGER Switch off the appliance and, in case of appliances con- –...

  • Page 11: Operating Field

    Operating field 1 Steam supply switch 6 Rotary knob for steam quantity controller 2 Indicator lamp - water shortage steam boiler (red) 7 Indicator light - water shortage fresh water tank (red) 3 Indicator lamp - heating (yellow) 8 Indicator lamp - Descaling (white) 4 Rotary knob for VAPOHYDRO regulation 9 Switch heating "ON/OFF"...

  • Page 12: 030 Function

    030 Function Functional diagram 1 Low-water thermostat 11 Temperature display 2 Heating 12 Level sensor 1500 W 13 Safety lock 3 Heating 14 Pressure container 750 W Upper section 4 Thermostat 15 Pressure container 5 Control valve steam volume Lower part 6 Steam switch on the gun 16 Pump with check valve 7 Plug...

  • Page 13: Working With The Steam Gun

    Working with the steam gun If the steam switch is pushed on the gun, the solenoid valve opens and the steam flows from the pressure tank through the plug forward to the steam gun. With the control valve steam volume the steam volume can be adjusted.

  • Page 14: Pressure Controller

    Pressure controller The pressure regulator interrupts the circuit for the heating if the specified steam pressure is reached in the pressure tank. If the pressure in the pressure tank falls again, i.e. the steam has been consumed, the pressure switch automati- cally closes the circuit.

  • Page 15: Adrd Uninstalling / Installing The Control Valve Steam Volume

    ADRD Uninstalling / installing the control valve steam volume  ABRD Uninstall / install wheels  ABGE Uninstalling / installing cover 1 Turning handle 2 Screws 3 Control valve steam volume 4 Hose clip 5 Hose  Pull off the rotary handle. ...

  • Page 16: Adtw Uninstall / Install Water Shortage Thermostat

    1 Heat-conducting paste  Renew heat-conducting paste. ADTW Uninstall / install water shortage thermostat  ABRD Uninstall / install wheels  ABGE Uninstalling / installing cover 1 Screw 2 Connector 3 Thermostat 4 Halting plate  Disconnect the connector.  Loosen the screw. ...

  • Page 17: Adwp Uninstall / Install Water Pump

    ADWP Uninstall / install water pump 1 Screws 2 Cover  Loosen screws.  Remove the lid. 1 Hose 2 Hose clip 3 Water pump 4 Connector  Disconnect the connectors.  Loosen the hose clamps.  Pull out the hoses. ...

  • Page 18: Ah Service Group Electrics

    AH Service group electrics 010 Safety information WARNING Prior to all work on the appliance, switch off the appliance and pull the power plug. Allow the appliance to cool down prior to performing ser- vice tasks. Relieve the high pressure system of all pressure prior to all work on the appliance and the accessories.

  • Page 19: 040 Service Activities

    040 Service activities AHNK Uninstalling / installing mains connection  ABRD Uninstall / install wheels  ABGE Uninstalling / installing cover 1 Pressure container 2 Pipes 3 Safety clip 4 Mains connection  Put pressure tank aside.  Disconnect lines. ...

  • Page 20: Ahkl Uninstalling / Installing Indicator Lights

    AHKL Uninstalling / installing indicator lights  ABRD Uninstall / install wheels  ABGE Uninstalling / installing cover 1 Plug connections 2 Indicator lamps  Disconnect the connectors.  Remove indicator lights. Perform a function test. AHTR Uninstalling / installing transformer ...

  • Page 21: 050 Maintenance And Inspection

    1 Cover 2 Pipes  Lift the cover.  Disconnect lines.  Remove cover. 1 Plug connections  Disconnect the connectors. 1 Printed board  Remove the board from the casing. Installation information Check O-rings for damage. Observe the plug arrangement during installation. 050 Maintenance and inspection Service group does not contain any maintenance and in- spection points.

  • Page 22: Technical Specifications

    Technical specifications Electrical connection Mains voltage 220-240 Frequency 1~ 50-60 Voltage in the steam gun Type of protection IPX4 Protective class Performance data Heating output 2300 Pump Max. operating pressure MPa (bar) 0,4 (4,0) Permitted operating pressure MPa (bar) 0,6 (6,0) Max.

  • Page 23: Troubleshooting

    Troubleshooting Failure Cause Remedy Safety interlock cannot be opened Pressure in the pressure tank too high Release pressure, operate steam gun. Safety interlock cannot be opened Safety lock defective Replace defective parts. No steam exits the steam gun Steam switch on the gun defective Replace the switch No steam exits the steam gun Transformer, cable, heating, solenoid...

  • Page 24: Measured Values

    Failure Cause Remedy Pump does not deliver water Level sensor in the pressure tank Descale level sensor and pressure tank. furred up Check the electrical connections. Water pump defective. Electrical connections interrupted. Replacing the pump ADWP Uninstall / install water pump Indicator light "Descaling"...

  • Page 25: Voltage Measurement

    Voltage measurement The first specification refers to the voltage input and the second to the COM input on the measuring device. (e.g. pin 1 + pin 2 --> voltage input at pin 1 and COM input at pin 2). Here the mains voltage is defined as the provided voltage in the relevant country (+/- 10%).

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