HDS 945HDS 1000HDS 1055

www.karcher.com 5.956-780 A 2005729 (06/03)

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IMPORTANT SAFETY INSTRUCTIONS

- SAVE THESE INSTRUCTIONS -

WARNINGWhen using this product basic precautions should always befollowed, including the following:

• Read all the instructions before using the product.

• To reduce the risk of injury, close supervision is necessary when a productis used near children.

• Know how to stop the product and bleed pressure quickly. Be thoroughlyfamiliar with the controls.

• Stay alert – watch what you are doing.

• Do not operate the product when fatigued or under the influence of alcoholor drugs.

• Keep operating area clear of all persons.

• Do not overreach or stand on unstable support. Keep good footing andbalance at all times.

• Follow the maintenance instructions specified in the manual.

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IMPORTANT SAFETY INSTRUCTIONS

GROUNDING INSTRUCTIONSThis product must be grounded. If it shouldmalfunction or breakdown, grounding provides apath of least resistance for electric current toreduce the risk of electric shock. This product isequipped with a cord having an equipment-grounding conductor and a grounding plug. Theplug must be plugged into an appropriate outletthat is properly installed and grounded inaccordance with all local codes and ordinances.

DANGER- Improper connection of the equipment-grounding conductor can result in a risk ofelectrocution. Check with a qualifiedelectrician or service personnel if you arein doubt as to whether the outlet is properlygrounded. Do not modify the plug providedwith the product

- if it will not fit the outlet, have a properoutlet installed by a qualified electrician.Do not use any type of adaptor with thisproduct.

EXTENSION CORDSUse only 3-wire extension cords that have3-prong grounding-type plugs and 3-pole cordconnectors that accept the plug from the product.Use only extension cords that are intended foroutdoor use. These extension cords are identifiedby a marking “Acceptable for use with outdoorappliances; store indoors while not in use.” Useonly extension cords having an electrical ratingnot less than the rating of the product. Do not usedamaged extension cords. Examine extensioncord before using and replace if damaged. Donot abuse extension cord and do not yank on anycord to disconnect. Keep cord away from heatand sharp edges. Always disconnect theextension cord from the receptacle beforedisconnecting the product from the extensioncord.Important: When using an extension cord alwaysunwind cord completely.

WARNINGTo reduce the risk of electrocution, keep allconnections dry and off the ground. Do nottouch plug with wet hands.

WARNING- Risk of Injection or Injury- Do Not Direct Discharge Stream At Persons.

High Pressure jets can be dangerous if subject tomisuse. The jet must not be directed at persons,animals or machine itself. This machine hasbeen designed for use with cleaning chemicalssupplied or recommended by the manufacturer.The use of other cleaning chemicals may affectthe operation of the machine and void thewarranty.

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15 Elec. connecting cables16 Water connection with strainer17 High-pressure connection18 Hand-held spray gun with

high-pressure hose19 Spray lance20 High-pressure nozzle21 Appliance switch22 Thermostat23 Fuel indicator light24 Engine indicator light25 Liquid softener indicator light26 Manometer27 Detergent metering valve

1 Filling orifice for fuel2 Handle3 Instrument panel4 Button for overcurrent protective relay5 Compartment for accessories6 Short-time operation instructions7 Cover flap for compartment8 Appliance hood9 Cover flap for filling orifices

10 Filling orifice for liquid softener11 Filling orifice for detergent12 Recessed grips in the bottom pan13 Pressure and volume control14 Guide roller with parking brake

1. Diagram of the appliance

2. Controls

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3. Technical Data���

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4. Start-up

4.1 Environmental protection

� Please dispose of packaging environmentallyresponsibly.The packaging materials are recyclable.Please do not throw the packaging in withhousehold rubbish but take it to a recyclingcentre.

� Please dispose of scrapped unitsenvironmentally-responsibly.Scrapped units consist of valuable recyclablematerials that should be taken to a recyclingcentre. Batteries, oil and similar productsmust not be allowed to contaminate theenvironment. Therefore, please dispose ofscrapped units via appropriate disposalsystems.

� Please ensure engine oil, fuel oil, diesel andpetrol to contaminate the environment. Pleaseprotect the ground and dispose of used oilecologically.

4.2 Unpacking the appliance

� Please contact your dealer immediately if, onunpacking the appliance, you discoverdamage has been caused duringtransportation.

4.3 Attaching the accessories

� Attach the two handles to the appliance.

� Connect the spray lance to the gun.

� Attach the high-pressure nozzle to the spraylance.

� Tighten all union nuts hand-tight.

4.5 Pouring in the fuel

� The appliance is delivered with an empty fueltank.

� Fill the fuel tank with diesel or a light fuel oilbefore the initial start-up.

When the fuel tank is empty, the fuel pumpwill operate dry and will be damaged.

4.6 Pouring in the liquid softener

� The liquid softener prevents the heating elementfrom becoming calcified when operating withhard supply water. The liquid softener is added indrops to the supply water in the water tank. Themetering is set to an average value at the factoy.This setting may be adjusted to local conditionsby customer service.

� Pour the RM 110 liquid softener (included instandard delivery) into the filling orifice of thewhite tank.

� You can also work without liquid softener whenoperating with soft water, e.g. rain water. In thiscase you should remove the small (!) cover fromthe white tank and place the supplied springunderneath on the cover support. Then replacethe cover. This prevents the indicator light on theinstrument panel from continually flashing. Thisspring must be removed when operating withsupply water.

4.4 Checking the oil level of thehigh-pressure pump

� Before the initial start-up, open the appliancehood and cut the tip off the oil tank cover (ventingthe oil housing).

� Check the oil level in the oil tank. Do not start theappliance if the oil level has dropped below“MIN”. Top up the oil as required (see tech. data,chap. 3).

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4.7 Connecting the water

� See technical data, chap. 3 for connectedloads.

� Attach the supply hose to the appliance and tothe water line. The supply hose is not includedin standard delivery.

� If you draw in the water from an open tank,you should– disconnect the water supply from the pump

head– unscrew the upper supply hose from the

water tank and connect to the pump head.– use a water supply hose which has a

minimum diameter of 3/4" and a suctionfilter.

� Until the pump has drawn in the water, youshould:– rotate the pressure and volume control to

“MAX”,– close the detergent metering valve.

4.8 Connecting the power

� See technical data, chap. 3 for connectedloads

� The voltage stated on the rating plate mustcorrespond to the voltage of the power source.

� The electric plug must only be fitted by anauthorized customer service/electricalengineer. The direction of rotation of the enginemust also be observed. If the direction ofrotation is correct, there will be a powerful airflow from the exhaust gas opening of theburner.

� First, position the appliance switch to “STOP”and then put the electric plug into the socket.

� If you are using an extension lead, it shouldalways be completely unwound from the cabledrum and have an adequate cross-section(25 ft = 12 AWG, 50 ft = 10 AWG).

4. Start-up

4.9 Intended use

� Use the appliance to clean machines, vehicles,buildings, tools, etc.

� Clean facades, patios, garden implements, etc.with the high-pressure spray only, i.e. withoutdetergent. We recommend the dirt blaster, aspecial accessory, for stubborn dirt.

� If the machine is used at petrol stations or inother hazardous areas, the appropriate safetyregulations must be observed.

� Please ensure waste water containing mineraloil does not contaminate soil, lakes and rivers orthe sewerage system. Therefore, please washengines and underbodies only in appropriatewashing installations provided with oil traps.

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5.1 Venting the appliance

� Open the water intake.

� Allow the appliance to run without the high-pressure hose until the water emerges withoutbubbles.

� Then connect the high-pressure hose.

� If the spray lance and high-pressure nozzlehave already been fitted to the high-pressurehose, you can vent the appliance as follows:With the hand-held spray gun open, switchthe appliance on and off several times atintervals of 10 seconds until the water emergesfrom the high-pressure hose without bubbles.

5.2 High-pressure nozzle

� The effectiveness of the high-pressure jetdepends to a great extent on the spray angle.A 25° fan jet nozzle is usually employed(included in standard delivery).

� Other nozzles are available as accessories.

0° full jet nozzlefor stubborn dirt.

40° fan jet nozzlefor sensitive surfaces.

Dirt blasterfor thick layers of dirt.

Variable angle nozzlewith adjustable spray angle

� At first always direct the high-pressure jetfrom a greater distance at the object which isto be cleaned, thereby preventing damagefrom excessive pressure.

5. Operation

5.3 Adjusting the operating pressureand flow rate

� You can adjust the operating pressure andflow rate steplessly with the pressure andvolume control on the pump head:Screwing in the adjusting screw - operatingpressure and flow rate higherUnscrewing the adjusting screw - operatingpressure and flow rate lower

5.4 Operating with cold water

� Set the thermostat to 30°C.

� Switch the appliance switch to “ ”.

5.5 Working temperature

� The working temperature can be adjusted toany temperature required.

86°–122°F For light contaminationmax. 140°F For contamination containing

albumen in the food-stuffindustry

140-175°F Vehicle bodywork and machinecleaning

210-230°F Removing preservatives andgrease-based dirt

app.285°F Thawing aggregate and sometypes of facade cleaning

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5. Operation

5.6 Operating with detergent

� Fill the detergent tank.

� Set the detergent metering valve to the desiredconcentration.

� In order to protect the environment, werecommend that detergent is used sparingly.Comply with the metering recommendationon the detergent container label.

� We offer an individual range of detergentsand preservatives and therefore guaranteetrouble-free operation. Please ask for advice,or request our catalogue or detergentinformation leaflets.

� Only those detergents may be used whichhave been authorized by the manufacturer ofthe appliance.

� Unsuitable detergents can damage theappliance and the object which is to be cleaned.

� We recommend the following cleaningmethod:

Step 1: Loosening the dirtSpray on detergent sparingly and allow toreact for 1–5 minutes.

Step 2: Removing the dirtSpray off the dissolved dirt with the high-pressure jet.

� When you have finished working withdetergent, you should set the detergentmetering valve to “0” and rinse the appliancethoroughly with the gun open for approx.1 minute.

5.7 Interrupting operation

� If you release the trigger of the hand-heldspray gun, the appliance switches off. If thetrigger is pulled again, the appliance switcheson again.

5.8 Switching off the appliance

Warning!� Danger of scalding with hot water.

After operating it with hot water or steam theunit must be cooled for at least two minutes byoperating it with cold water and its openhandgun.

� Switch the appliance off and pull the electricplug out of the socket.

� Close the water intake.

� Pull the gun trigger until the appliance isdepressurized.

� Secure the gun trigger with the safety catch toprevent the gun from accidentally opening.

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6. Care and maintenance

Always disconnect the appliance fromthe electric mains supply before carryingout any maintenance work.

� You can arrange a regular safety inspectionwith your dealer or take out a maintenancecontract. Please ask for advice.

� Diagrams can be found at the end of theseoperating instructions.

6.1 Weekly

� Check the oil level (diagram 1).If the oil is milky (water in the oil), contactcustomer service immediately.

� Clean the strainer in the water connection.

6.2 Monthly or as required

� Clean the strainer in the low water safetydevice (diagram 2).

� Clean the filter on the detergent suction hose.

6.3 Annually, after 500 operating hoursor as required

� Changing the oil (diagram 1).

� Unscrew the oil drain plug and dispose of theold oil via an authorized collecting point(protection of the environment).

� When the oil has completely drained, screwthe oil drain plug back in and slowly pour in oilup to the “MAX” position on the oil tank (airbubbles must escape).

� See technical data, chapter 3 for quantity andtype of oil.

6.4 Decarbonizing the heating element

� If the heating element becomes sooted withina short time, you should have the burnersetting checked by the authorized customerservice. If the burner setting is incorrectly set,the fuel consumption will be increased,polluting the environment unnecessarily.

6.5 Decalcifying the heating element

� If the appliance continually switches on andoff at max. operating pressure, or if thepressure on the appliance manometerincreases to more than 10 bar without thehigh-pressure hose at the maximum waterflow, internal deposits/calcification are theprobable cause.

� We recommend that you contact theauthorized customer serrvice to carry outdecalcification, as the metering of the liquidsoftener should then be checked.

6.6 Cleaning the fuel tank

� Remove the tank from the appliance (firstunscrew the handle, appliance hood and coverfrom the switch box).

� Dispose of the remaining fuel.

� Rinse out the tank thoroughly. If you rinse outthe tank with water, allow it to dry completely.

� Replace the fuel filter (if required).

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6. Care and maintenance

6.7 High-pressure hose

� The high-pressure must not be damaged(danger of bursting). A damaged high-pressure hose must be replaced immediately.Only use a Kärcher high-pressure hosereplacement.

6.8 Connecting cable

� The connecting cable must not be damaged(danger of electric shock). A damagedconnecting cable must be replacedimmediately by the authorized customerservice/electrical engineer.

6.9 Protection from frost

� Frost will damage the appliance if it is notdrained completely of water. In winter theappliance should be kept in a room which isabove freezing point. Otherwise, it isrecommended to drain the appliance or rinseit thoroughly with anti-freeze.

� Draining the appliance– Unscrew the water intake hose and high-

pressure hose from the appliance.– Unscrew the supply line from the base of

the boiler and allow the heating element todrain.

– Allow the appliance to run for a max. of 1minute until the pump and the lines havedrained.

� Anti-freezeDuring extended down-time periods, it isrecommended to pump an anti-freeze throughthe appliance. This also protects the applianceto a certain degree from corrosion.

� Observe the following if the unit is connectedto a flue:Danger of damage caused by cold air enteringthrough the flue. Disconnect unit from flue atoutside temperatures below 0°C.

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7. Troubleshooting

7.3 The appliance does not come up topressure

� Rotate the pressure and volume control to themaximum value.

� Fill the detergent tank or set the meteringvalve to zero.

� Vent the appliance (see chap. 5).

� Clean the strainer in the water connection.

� Check the water intake volume (see technicaldata, chap. 3).

� Check all the supply lines to the pump forleaks and blockages.

7.4 Pump leaks

� 3 drops per minute are permissible. You shouldcontact customer service if the leakage ismore rapid.

7.5 The pump is knocking

� Check all the supply lines to the pump, alsothe detergent system, for leaks and blockages.

� Vent the appliance.

7.6 Detergent is not being drawn in

� Let the appliance run with opened meteringvalve (max. setting) and without high-pressurehose, until the detergent visibly emerges atthe appliance outlet.

� Clean the detergent suction hose and filter.

� Clean the metering valve for cleaning agent.

� Clean the non-return valve on the pump headand the connection for the detergent suctionhose.

� Check all the detergent hoses and connectionsfor leaks.

Always disconnect the appliance fromthe electric mains supply before carryingout any repair work.The electrical components must only bechecked by the authorized customerservice.

� In this chapter we shall provide information onhow you can rectify simple malfunctionsyourself. In all other cases or in the event ofelectrical malfunctions, please contact theauthorized customer service.

� Diagrams can be found at the end of theseoperating instructions.

7.1 Indicator lights

� Indicator light for fuel tank lights up– Refill with fuel.– Check that the fuel level sensor is

functioning correctly.

� Indicator light for engine-overheating lightsup– Eliminate the cause of the overload.– Allow the engine to cool down to room

temperature.– Press the overcurrent relay button in the

accessories compartment.

� Indicator light for liquid softener lights up– Refill with RM 110 liquid softener.– Clean the electrodes in the liquid softener

tank.

7.2 The appliance will not start

� Check the mains voltage.

� Check whether the connecting cable isdamaged.

� Press the overcurrent relay button in theaccessories compartment.

� Contact customer service in the event of anelectrical malfunction.

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7.7 The appliance switches on and offcontinuously

� Clean the high-pressure nozzle.

� Check whether the heating element is calcified(see chap. 6).

� Attach a larger nozzle when using high-pressure extension hoses.

7.8 Burner does not ignite

� The ignition sparks can be observed throughthe inspection window in the burner cover.The appliance has a continuous ignition., i.e.even when operating with cold water an ignitionspark must be visible. Clean, adjust or replacethe ignition electrodes as required– Fill the fuel tank.

– Check that the fuel pump and the fuelsolenoid valve function correctly.

– Clean the strainer in the low-water safetydevice (diagram 2).

– Change the fuel filter.

– Check the direction of rotation of the engine.If the direction of rotation is correct, therewill be a powerful air flow from the exhaustgas opening of the burner.

7.9 The temperature is not reachedwhen operating with hot water/steam

� Set the thermostat higher.

� Reduce the operating pressure and the flowrate.

� Check whether the heating element is sooted(see chap. 6).

7. Troubleshooting

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8. General Information

8.1 Safety equipment

Pressure switchWhen the operating pressure is exceeded, e.g.when the gun is closed, when the nozzle is dirty orwhen the heating element is calcified, the pressureswitch switches off the appliance and switches it onagain when the pressure falls below a specificpressure. The pressure switch is set and lead-sealed at the factory. Adjustments may only becarried out by customer service.

Safety valveThe safety valve opens when the pressure switch isdefective. The safety valve is set and lead-sealed atthe factory. Adjustments may only be carried out bycustomer service.

Low-water safety deviceThe low-water safety device prevents the burnerfrom switching on when the water is low. A strainerprevents the safety device from becoming fouledand must be cleaned regularly.

8.2 Accessories

Incorrect, badly fitting or defective accessories impairthe function of the appliance and are dangerous. Itis advisable to use Kärcher accessories which aremade-to-order. Your dealer will be glad to advise

8.3 Spare parts

Please note that the use of other than Kärcher spareparts can result in damage and even seriousaccidents if these parts have not been correctlymanufactured, if they do not replace the Kärcherspare part exactly or if they result in unsafe operationof the appliance.

Kärcher spare parts guarantee that the appliancecan be operated safely and trouble-free.

A selection of the most common spare-part numbersare listed at the end of these operating instructions.

8.4 Guarantee

The terms of guarantee issued by our competentdistribution company are valid in every country. Ifthe appliance malfunctions in any way, we shallrectify the fault free of charge within the period ofguarantee, provided the cause can be attributed tofaulty material or a manufacturing error.

The guarantee will only come into force when yourdealer has completely filled out, stamped and signedthe enclosed reply card on completion of sale andwhen you have sent the reply card to the distributioncompany in your country.

In the event of a claim on the guarantee, pleaseconsult your dealer with accessories and receipt ofpurchase or contact your nearest authorizedcustomer service centre.

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2.880-296.0

HDS 10551.027-681.0 USA

6.414-028.0

5.321-377.0

5.321-379.0

5.321-150.0

5.731-039.0

5.321-150.06.303-025.0

6.303-025.0

2.880-296.0

5.305-204.0

6.362-496.0

6.303-025.0

6.303-025.0

5.401-210.0

7.306-049.0

5.321-403.0

5.337-021.0

5.363-290.0

5.063-447.0

6.313-014.0

5.321-378.06.313-014.0

5.030-834.0

6.388-225.05.063-448.0

5.042-463.06.388-559.0

5.392-017.0

7.312-004.0

5.363-300.0

4.775-026.0

4.760-101.0

4.760-101.0

4.760-101.0

6.390-010.004/97

6.390-010.0

6.647-904.0

29

2.880-296.0

HDS 10001.027-851.0 USA

6.414-028.0

5.321-377.0

5.321-379.0

5.321-150.0

5.731-039.0

5.321-150.06.303-025.0

6.303-025.0

2.880-296.0

5.305-204.0

6.362-496.0

6.303-025.0

6.303-025.0

5.401-210.0

7.306-049.0

5.321-403.0

5.337-021.0

5.363-290.0

5.063-447.0

6.313-014.0

5.321-378.06.313-014.0

5.030-834.0

6.388-225.05.063-448.0

5.042-463.06.388-559.0

5.392-017.0

7.312-004.0

5.363-300.0

4.775-026.0

4.760-101.0

4.760-101.0

4.760-101.0

6.390-010.009/98

6.390-010.0

6.647-904.0

30