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Karcher HD 1090 Service Handbook

Manual is about: Karcher High Pressure Cleaner Safety Instructions

Summary of HD 1090

  • Page 1

    Hd 1090 service handbook 0 i 5.905-212 03.02.

  • Page 2

    Foreword good servicing requires extensive and relevant training as well as comprehensible reference documents. We therefore regularly offer all service technicians both basic and ongoing training courses for the full range of our products. In addition we produce service handbooks for the major equi...

  • Page 3: Contents

    1 contents unit function .................................................................................... 2-15 equipment .............................................................................................................................. 2 functional diagram ..............................

  • 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

    3 1 changeover nozzle 2 spray lance 3 servopress handgun 4 adjusting wheel for pressure and flow control 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-...

  • 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

    5 any unit without a float tank should not be connected directly to the water inlet. A non- return valve (7) at the water supply is intended to prevent detergent from getting into the supply network. From the water supply with non-return valve (7), the water flows through the three cooling coils in ...

  • 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

    7 1 suction valve 2 pressure valve 3 pressure gauge 4 oil reservoir 5 motor shaft 6 shaft seal 7 motor bearing 8 swash plate 9 piston glide shoe 10 piston spring 11 piston 12 oil seal 13 washer 14 low-pressure seal and support ring 15 bushing 16 washer 17 high-pressure seal 18 support ring 19 piston...

  • Page 10

    8 unit function pressure and flow control with the servopress handgun 1 2 4 3.

  • Page 11

    9 unit function pressure and flow control with the servopress handgun 1 threaded plug 2 pressure holding valve 3 spring 4 ball 5 valve seat 6 connecting channel to suction chamber 7 piston rod 8 threaded fitting 9 spring 10 pressure switch 11 locking nut 12 adjusting nut for pressure switch 13 locki...

  • Page 12

    10 1 pressure chamber in front of injector 2 injector 3 ball 4 detergent connection 5 spring 6 high-pressure outlet unit function detergent injector with non-return valve detergent can only be taken in if the changeover nozzle on the spray lance is set at "chem“. The pressure in the system thereby d...

  • Page 13

    11 unit function detergent metering valve 1 metering knob 2 valve housing 3 spring 4 o-ring 5 metering channel 6 o-ring 7 inlet 8 sealing ring for detergent tank 9 tank lid 10 outlet with this system, the tank lid and metering valve are one unit. In the valve housing, there is a ring-shaped metering...

  • Page 14

    12 unit function handgun with pressure and flow control (servopress) with low-effort version.

  • Page 15

    13 unit function handgun with pressure control and flow control (servopress) with low-effort version 1 spray lance connection 2 high-pressure hose connection 3 trigger 4 retention force lever 5 trigger play 6 retention force spring 7 handgun grip covers 8 trigger position stop lever 9 stop position ...

  • Page 16

    14 unit function changeover nozzle 1 nozzle guard 2 nozzle 3 ball (2x) 4 screw socket 5 marking line 6 union nut 7 fan jet symbol 8 pencil jet nozzle 0° 9 fan jet symbol chem 10 fan jet nozzle 25° 11 pencil jet nozzle symbol 12 fan jet nozzle chem the changeover nozzle should be fitted to the spray ...

  • Page 17

    15 unit function circuit diagram 0.087-804 q1 motor circuit-breaker with thermal over- load trip q2 pressure switch, 2-pole m1 3-phase a.C. Motor the model 1.951-261 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 a...

  • Page 18

    16 troubleshooting and basic settings unit does not run check unit switch measure current consumption check mains voltage electrical connection defective – the voltage indicated on the rating plate must coincide with the mains voltage. – check voltage at the socket outlet (all 3 pha- ses). – check m...

  • Page 19

    17 troubleshooting and basic settings unit does not run overflow valve disassembled check pressure switch pressure switch defective – disconnect the unit from the mains and, with the unit switch on, measure electrical resi- stance between the connecting terminals (in- let-outlet). In a pressureless ...

  • Page 20

    18 troubleshooting and basic settings unit does not reach required pressure disassemble changeover nozzle pull out water inlet strainer check water supply quantity insufficient water supply – the water inlet hose must be at least 3/4 inch in diameter. – check the water inlet quantity (see technical ...

  • Page 21

    19 troubleshooting and basic settings unit does not reach required pressure check seal of valves disassemble the pressure valves/suction valves vent the unit pump not vented – switch off the unit. With the gun open, open the water inlet and wait until the water comes out without any bubbles. Pump ta...

  • Page 22

    20 troubleshooting and basic settings unit does not reach required pressure checking flow rate setting operating pressure fitting the shut-off valve check flow rate – mount the water inlet hose. – mount the shut-off valve at the high-pressure outlet. – connect the high-pressure hose with hand- gun (...

  • Page 23

    21 troubleshooting and basic settings unit does not reach required pressure 1 piston 2 mounting nut 3 spring 4 washer 5 adjusting nut, working pressure 6 lock nut 7 adjusting nut, pressure switch 8 lock nut 9 rod 10 valve seat 11 ball 12 spring overflow valve leaking – unscrew lock nut and adjusting...

  • Page 24

    22 adjust pressure switch set overflow valve troubleshooting and basic settings unit does not reach required pressure setting overflow valve – always use a new high-pressure nozzle for the basic setting. – let the unit run with the servopress handgun fully open. – with the overflow valve adjusting n...

  • Page 25

    23 troubleshooting and basic settings unit switches on and off continuously water leak between high-pressure hose and o-ring servopress handgun disassembled servopress handgun leaking – disassemble the handgun and check all com- ponents for any malfunction. Replace defecti- ve parts if necessary. – ...

  • Page 26

    24 troubleshooting and basic settings unit switches on and off continuously detergent non-return valve leaking – remove detergent non-return valve. If neces- sary replace defective parts. Do not grease steel ball and o-ring before installing. Overflow valve disassembled overflow valve leaking – disa...

  • Page 27

    25 troubleshooting and basic settings unit switches on and off continuously unscrew control pressure injector control pressure injector defective – control pressure injector of overflow valve is washed out or the o-rings are defective. – unscrew the injector; the inside diameter must be 2.4 + 0.05 m...

  • Page 28

    26 troubleshooting and basic settings no detergent function metering valve disassembled unscrew the injector detergent non-return valve dismantled detergent non-return valve stuck – unscrew detergent connection, remove and clean ball, spring, plastic sleeve and o-ring. If necessary replace defective...

  • Page 29

    27 troubleshooting and basic settings water escaping between cylinder head and housing low-pressure seal disassembled install seal with mounting mandrel removing high-pressure seal high-pressure seal defective – a leak of one drop per minute per piston is permissible. – remove cylinder head head bol...

  • Page 30

    28 troubleshooting and basic settings oil escaping between cylinder head and housing install oil seals remove oil seals dismantling housing – remove the housing with pistons and springs. – carefully lever out the oil seals from the hou- sing. Note: do not damage the sealing surface. All parts must b...

  • Page 31

    29 troubleshooting and basic settings swash plate/shaft sealing ring/motor bearing defective removing bearing ring (heating) shaft sealing ring dismantled removing swash plate swash plate defective – unscrew the swash plate retaining screw. – with an extraction tool (special tool), pull the swash pl...

  • Page 32

    30 special tools 1 electric multimeter ............................................................................................ 6.681-037 2 mounting mandrel – high-pressure seal/oil seal ............................................... 5.901-055 3 mounting sleeve – high-pressure seal ...............

  • Page 33

    31 technical data values all versions water inlet temperature (max.) ........................................................................... 60 °c inlet hose length (min.) /diameter (min.) ......................................................... 7.5 m 3/4 inch suction height from open tank .......

  • Page 34

    32 technical data cleaner no. Circuit diagram supply voltage/ type of current current consumption thermo- contact no. Volt / ph / hz amp. Amp. 1.951-111 0.087-804 400 / 3 / 50 14.5 1.951-261 0.087-804 230 / 3 / 50 26.0 1.951-281 0.087-804 400 / 3 / 50 14.5 1.951-291 0.087-804 400 / 3 / 50 14.5 1.951...