Kärcher HD 1090 Service Handbook Download | Manualshive

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HD 1090

Service Handbook

0

I

5.905-212

03.02

1
2
3
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Summary of Contents for HD 1090

Page 1: ...HD 1090 Service Handbook 0 I 5 905 212 03 02...

Page 2: ...ce handbooks for the major equipment which can be used initially as instructional material and subsequently as sources of reference Furthermore we regularly distribute service information bulletins th...

Page 3: ...ss with low effort version 12 Changeover nozzle 14 Circuit diagram 0 087 804 15 Troubleshooting and basic settings 16 29 Unit does not run 16 Unit does not reach required pressure 18 Unit switches on...

Page 4: ...2 Unit function Equipment 10 15 12 9 10 13 11 14 16 1 8 2 3 4 5 6 7 0 I...

Page 5: ...rol 5 high pressure hose 6 handle 7 detergent metering valve 8 detergent tank cover 9 detergent tank 10 detergent suction hose with filter 11 hood mounting screw 12 water inlet with strainer 13 high p...

Page 6: ...4 Unit function Functional diagram 5 3 7 8 9 10 11 12 13 14 2 1 15 16 17 4 6...

Page 7: ...the detergent tank 6 As soon as the metering valve 4 is open and the changeover nozzle 17 is set at low pressu re detergent is taken in from the detergent tank 6 by the injector 2 In the event of suc...

Page 8: ...6 Unit function Pump 15 17 18 10 12 13 11 14 16 20 9 12 11 1 8 2 3 4 5 6 7 11 19 21...

Page 9: ...piston housing 20 O ring 21 cylinder head Unit function Pump Function The pump is a 3 piston swash plate pump with drive running in an oil bath It is directly attached to the motor shaft therewith ach...

Page 10: ...8 Unit function Pressure and flow control with the Servopress handgun 1 2 4 3...

Page 11: ...the pressure in the connecting channel 17 rises The pistonrod 7 is pushed to the left slightlyagainstthespringpressure 9 Thetape red tip of the rod pushes the ball 4 away from its seat 5 slightly sot...

Page 12: ...t at CHEM The pressure in the system thereby drops to approx 50 bar and the injector generates its maximum low pressure approx 0 8 bar The ball 3 of the detergent non return valve is lifted out of its...

Page 13: ...ng valve are one unit In the valve housing there is a ring shaped metering channel the cross section of which is increasing The inlet and outlet are connected with this metering channel Depending on t...

Page 14: ...12 Unit function Handgun with pressure and flow control Servopress with low effort version...

Page 15: ...een depres sed The distance that the trigger 3 can move is limited by an adjustable stop lever 8 which can be moved upwards or downwards by turning the adjusting wheel 10 The retention force lever 4 a...

Page 16: ...ver nozzle should be fitted to the spray lance so that the marking line 5 is at the top In this position the two balls inside the changeo ver nozzle seal the two upper nozzles so that the water jet al...

Page 17: ...1 is reconnectable from 230 V Y star to 400 V delta From phases L1 L2 and L3 the voltage reaches the motor via unit switch Q1 and pressure switch Q2 M otor ATB VEM M otor LS Start of coil winding Star...

Page 18: ...th min 2 5 mm from 10 m to 30 m in length Motor and unit switch defective The unit switch has a built in thermal overload trip If the overload trip has triggered several times measure the current cons...

Page 19: ...outlet Inapressurelessstate thereshould be zero Ohms contacts closed Ifnecessary replacedefectivepartsandreset the pressure switch see page 22 Overflow valve stuck If the overflow valve has switched...

Page 20: ...least 3 4 inch in diameter Check the water inlet quantity see technical data Water inlet strainer blocked Pull out the water inlet strainer with pliers and clean Replace if necessary High pressure noz...

Page 21: ...ck for damage and dirt Replace if necessary Mount all O rings using silicone grease Mount all screw plugs noting the torque see technical data Suction valve leaking Remove the suction cover Pull out t...

Page 22: ...ndgun open start up the unit Use the shut off valve to set operating pressu re see technical data Using a suitable container time and measure the water flow volume e g liters per minute If there is to...

Page 23: ...usting nut from the pressure switch Unscrew lock nut and adjusting nut from the overflow valve Remove washer and springs Screw out the mounting nut and pull out the rod Remove the circlip and check al...

Page 24: ...with the Servopress handgun fully open With the overflow valve adjusting nut set the spring tension so that operating pressure is reached see technical data Secure the adjusting nut with the lock nut...

Page 25: ...union piece with anti seize copper grease compound High pressure screwed connections leaking CheckallO ringsandsealsbetweenthecylin der head connection and the handgun If necessary replace defective...

Page 26: ...installing Overflow valve disassembled Overflow valve leaking Disassemble overflow valve completely and check all O rings support rings Replace de fective parts if necessary Lubricate all O rings wit...

Page 27: ...ew control pressure injector Control pressure injector defective Control pressure injector of overflow valve is washed out or the O rings are defective Unscrewtheinjector theinsidediametermust be 2 4...

Page 28: ...replace defective parts Washed out injector If the injector is washed out no detergent can be taken in Unscrew injector if necessary replace O rings and injector Metering valve defective Disassemble a...

Page 29: ...Check all parts for defects Replace if neces sary Grease any new high pressure seals ge nerously with silicone grease and install with the mounting mandrel special tool Pay attention to the mounting p...

Page 30: ...out grease or oil Pay attention to the mounting position of the seal the sealing lip must point to the mounting mandrel Oil the piston and assemble with springs Grease the O ring with silicone grease...

Page 31: ...f disassembly Motor bearing defective Dismantle all parts as described above Remove the unit switch Heat the motor housing evenly in the region of the bearing ring until the bearing ring falls out Ins...

Page 32: ...essure seal 5 901 136 4 mounting mandrel overflow valve 5 901 076 5 amperage conduct pliers 6 681 018 6 swash plate extractor 4 901 038 7 assembly dismantling tool overflow valve seat 4 901 054 8 valv...

Page 33: ...m Swash plate 12 15 Nm Detergent connection 15 Nm Blower wheel 12 15 Nm Pressure holding valve screw plug 50 Nm Suction valve lid 42 45 Nm Overflow valve seat 3 5 Nm Oil outlet screw 20 25 Nm Pressure...

Page 34: ...14 0 14 5 1 951 761 0 087 804 230 3 60 25 0 26 0 1 951 811 0 087 804 230 1 60 29 0 30 0 30 5 1 951 841 0 087 804 240 1 60 29 0 30 0 30 5 Cleaner No High pressure nozzle Water volume full load Working...

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