Karcher Hds 7/9-4 M Professional Hot Water Steam Pressure Washer Instruction Manual

KARCHER HDS 7/9-4 M Professional Hot Water Steam Pressure Washer

Proper Use

Cleaning of: Machines, Vehicles, Structures, Tools, Facades, Terraces, Gardening tools, etc.

DANGER
Risk of injury! Follow the respective safety regulations when operating at gas stations or other dangerous areas.
Please do not let mineral oil contaminated waste water reach soil, water or the sew-age system. Perform engine cleaning and bottom cleaning therefore only on specified places with an oil trap.

Quality requirements for water:
ATTENTION
Only clean water may be used as high pressure medium. Impurities will lead to in-creased wear and tear or formation of de-posits in the appliance and accessories. If recycled water is used, the following limit values must not be exceeded.

Safety Instructions

• Please follow the national rules and regulations for fluid spray jets of the respective country.
• Please follow the national rules and regulations for accident prevention of the respective country. Fluid spray jets must be tested regularly and the results of these tests must be documented in writing.
• The heating appliance of the machine is an ignition plant. All national laws and regulations about heating systems must also be followed.
• As per the applicable national guide-lines, the first time this high-pressure cleaner must be taken into operation by a skilled person. KÄRCHER has al-ready performed this initial start-up for you and has documented it accordingly. The documentation can be requested at your KÄRCHER partner. Please have the part and plant number of the appliance available when enquiring about the documentation.
• We would like to point out that the appliance must be repeatedly checked by a skilled person as prescribed by the applicable national regulations. Please contact your KÄRCHER partner.
• The appliance/accessories must not be modified.

Safety Devices

Safety devices serve for the protection of the user and must not be put out of operation or bypassed with respect to their function.

Overflow Valve with Two Pressure Switches

• While reducing the water supply at the pump head or with the Servopress – regulation the overflow valve opens and part of the water flows back to the pump suck side.
• If the hand-spray gun is closed, so that the whole water flows back to the pump suck side, the pressure switch at the overflow valve shuts down the pump. If the hand spray gun is opened, the pressure switch on the cylinder head turns the pump back on.

The overflow valve is set by the manufacturer and sealed. Setting only by customer service.

Safety Valve

• The safety valve opens, when the overflow valve resp. the pressure switch is broken.

The safety valve is set by the manufacturer and sealed. Setting only by customer service.

Water Shortage Safeguard

• The water shortage safeguard prevents the burner to be turned on when there is water shortage.
• A sieve prevents the contamination of the safeguard and must be cleaned regular.

Temperature Stop for Exhaust Gases

• The temperature stop switches off the machine when the waste gases have reached very high temperatures.

Start up

WARNING
Risk of injury! Appliance, accessories, sup-ply lines and connections must be in fault-free condition. If they are not in a perfect state then the appliance must not be used.

• Lock parking brake.

Installing the Handle

ATTENTION
Hook the electric supply line into the cable guide of the right handle bow. Be careful not to damage the cable.

Replace the System Care Bottle

Note: Push the bottle in securely to penetrate the closure. Do not remove bottle until it is empty.
Note: To protect the device, the burner is switched off 5 hours after the system care bottle is empty.

• The system care prevents the calcification of the heating spiral while operating with calciferous tap water. It is dosed into the supply in the float container drop by drop.
• The metering is set to medium water rigidity by the manufacturer

Note: A system care bottle is included in the delivery.

• Replace the system care bottle.

Adjusting the Dosage of the System Care Advance RM 110/RM 111

Determining the hardness of tap water:

• through the public water supply works,
• using a hardness tester (order no. 6.768-004)

Set the service switch according to the water hardness in the table.
Note: Observe the following when using system care Advance 2 RM 111:

• Calcification protection: See table
• Pump care and black water protection: Set the service switch to at least setting 3.

Refill Fuel

DANGER
Danger of explosion! Only refill diesel oil or light fuel oil. Inappropriate fuels, e.g. petrol, must not be used.
ATTENTION
Risk of damage! Never operate device with an empty fuel tank. The fuel pump will otherwise be destroyed.

• Refill fuel.
• Close tank lock.
• Wipe off spilled fuel.

Refill Detergent

DANGER
Risk of injury!

• Use Kärcher products only.
• Under no circumstances fill solvents (petrol, aceton, diluting agent etc.)
• Avoid eye and skin contact.
• Observe safety and handling instructions by the detergent manufacturer.

Kärcher offers an individual cleaning and care appliances program.
Your dealer will consult you gladly.

• Refill detergent.

Install the Hand-spray Gun, the Jet Pipe, the Nozzle and the High Pressure Hose

Note: The EASY!Lock system joins com-ponents with a quick-fasten thread solidly and securely with just one turn.

• Join the spray lance with the trigger gun and tighten until hand-tight (EASY!Lock).
• Insert the high pressure nozzle onto the spray lance.
• Install union nut and hand-tighten it (EASY!Lock).
• Appliance without hose drum:
  Join the high-pressure hose with trigger gun and high-pressure connection of the appliance and tighten until hand-tight (EASY!Lock).
• Device with hose drum:
  Join the high pressure hose with trigger gun and tighten until hand-tight (EASY!Lock).

ATTENTION
Risk of damage. Always unwind high-pressure hose completely.

Installing the Replacement High-Pressure Hose (Appliances with Hose Drum)

• Completely roll off the high-pressure hose from the hose drum.
• Rotate the hose drum until the screwed-on semi bowl is pointing toward the top. Loosen all three screws and remove the loosened semi bowl.
• Unlatch the fastening clamp for the high-pressure hose and pull the hose out.
• Route the new high-pressure hose through the intended hose guide and the deflection pulley at the bottom of the appliance.
• Slide the hose nipple all the way into the knot section of the hose drum and se-cure with the fastening clamp.
• Replace the half bowl.

Water Connection

For connection values refer to technical specifications

• Attach supply hose (minimum length 7.5 m, minimum diameter 3/4″) to the water supply set by means of a hose clamp.
• Connect the supply hose to the water connection point of the machine and at the water supply point (for e.g. a tap).

Note: The supply hose and the hose clamp are not included in the scope of delivery.

Suck in Water from Vessel

If you want to suck in water from an external vessel, the following modification is necessary:

• Remove the system care bottle.
• Release and remove the cover of the system care.
• Remove water connection from the fine filter.
• Unscrew the fine filter from the pump head.
• Remove the system care reservoir.
• Unscrew the top supply hose to the swimmer container.
• Connect the top supply hose at pump head.
• Re-plug the rinse line of the detergent dosing valve.
• Connect suction hose (minimum diameter 3/4″) with filter (accessory) to the water connection point.

Max. suck height: 0.5 m
Until the pump sucked in water, you should:

• Set the pressure/quantity regulation at the pump unit to maximum quantity.
• Close the dosing valve for the detergent.

DANGER
Risk of personal injury or damage! Never suck in water from a drinking water contain-er. Never suck in liquids which contain sol-vents like lacquer thinner, petrol, oil or unfiltered water. The sealings within the device are not solvent resistant. The spray mist of solvents is highly inflammable, explosive and poisonous.
Note: Assembly in reverse order. Ensure that the solenoid valve cable on the reservoir of the system care is not pinched.

Power Connection

• For connection values, see technical data and type plate.
• The electrical connections must be done by an electrician according to IEC 60364-1.

DANGER
Risk of injury on account of electric shock!

• Unsuitable electrical extension cables can be hazardous. Only use electrical extension cables outdoors which have been approved and labelled for this pur-pose and have an adequate cable cross-section.
• Always unwind extension lines completely.
• The plug and coupling of the extension cable used must be watertight.

ATTENTION
The highest allowed net impedance at the electrical connection point (refer to technical data) is not to be exceeded. In case of confusion regarding the power impedance present on your connection, please contact your utilities provider.

Operation

DANGER
Danger of explosion! Do not spray flammable liquids.
DANGER
Risk of injury! Never use the appliance without the spray lance attached. Check and ensure proper fitting of the spray lance prior to each use. The screw connection of the spray lance must be finger-tight.
DANGER
Risk of injury! Hold the hand spray gun and the spray pipe firmly with both hands.
DANGER
Risk of injury! The trigger and safety lever may not be locked during the operation.
DANGER
Risk of injury! Contact Customer Service if the safety lever is damaged.
ATTENTION
Risk of damage! Never operate device with an empty fuel tank. The fuel pump will otherwise be destroyed.

Opening/Closing the Trigger Gun

• To open the trigger gun: Actuate the safety lever and trigger.
• To close the hand spray gun: Release the safety lever and trigger.

Replace the Nozzle

DANGER
Risk of injury! Switch the appliance off prior to replacing nozzle and activate hand spray gun until device is pressure-less.

• Secure the trigger gun. To do so, push the safety catch towards the front.
• Replacing the nozzle.

Operating Modes

0/OFF = Off

1. Operating with cold water
2. Eco operation (hot water max. 60°C)
3. Operating with hot water/steam

Turning on the Appliance

• Set appliance switch to desired operating mode.
  Indicator lamp for operational readiness lights up.

The device starts briefly and turns off, as soon as the working pressure is reached.
Note: If the indicator lamps for pump, rotation direction, burner malfunction or engine are on during operation, turn off the appliance immediately and repair malfunction, refer to “Help with malfunctions”.

• Release the trigger gun. To do so, push the safety catch towards the back.

When activating the hand spray gun the device switches back on.
Note: If no water comes out of the high pressure nozzle, vent pump. Refer to “Help with malfunctions – appliance is not building up pressure”.

Adjust Cleaning Temperature

• Set temperature regulator to desired temperature.

30°C to 98°C

• Clean with hot water. 100°C to 150°C
• Clean using steam.
• Replace the high-pressure nozzle (stainless steel) with steam nozzle (brass), (refer to “Using steam”).

Set Working Pressure and Flowrate

Pressure/Quantity Regulation of the Pump Unit

• Turn the regulation spindle in a clock-wise direction: Increase working pressure (MAX).
• Turn the regulation spindle in an anti-clockwise direction: Reduce working pressure (MIN).

Pressure/Quantity Regulation at the Hand Spray Gun

• Set thermostat to max. 98°C.
• Set the working pressure/quantity regulation at the pump unit to maximum quantity.
• Set the working pressure and feed quantity by turning (steplessly) the pressure/quantity regulation mechanism at the hand spray gun (+/-).

DANGER
Risk of injury! When adjusting the pressure/quantity regulation, make sure that the screw connection of the spray lance does not become loose.
Note: For long term work with low pressure, set pressure at the pressure/quantity regulation of the pump unit.

Operation with Detergent

• For considerate treatment of the environment use detergent economically.
• The detergent must be suitable for the surface to be cleaned.
• With support of the detergent dose valve set detergent concentration as determined by the manufacturer.

Note: Recommended values at the control panel at maximum working pressure.

Cleaning

• Set pressure/temperature and detergent concentration according to the sur-face to be cleaned.

Note: To prevent damage due to too much pressure, always position high pressure ray first from a greater distance towards object to be cleaned.

Recommended Cleaning Method
Loosen the dirt:

• Spray detergent economically and let it work for 1…5 minutes but do not let it dry up.

Remove the dirt:

• Spray off loosened dirt with the high pressure jet.

Operating with Cold Water

Removal of light contaminations and clear rinse, i.e.: Gardening tools, terrace, tools, etc.

• Set operating pressure according to need.

Eco Operation

The appliance works in the most economical temperature range.
Note: The temperature can be regulated up to 60°C.

Operating with Hot Water/Steam

We recommend the following cleaning temperatures:

• Light contaminations
  30-50°C
• Contaminations containing protein, i.e. in the food processing industry
  max. 60°C
• Vehicle cleaning, machine cleaning
  60-90°C
• Depressive, contaminations containing strong fat contents
  100-110°C
• Defrosting of surcharge substances, partially facade cleaning
  up to 140°C

Operating with Hot Water

DANGER
Scalding danger!

• Set temperature regulator to desired temperature.

Operating with Steam
DANGER
Scalding danger! The work pressure must not exceed 3.2 MPa (32 bar) when operating with temperatures above 98°C. Therefore the following measures must definitely be performed:

• Replace high pressure nozzle (stain-less steel) with steam nozzle (brass, order see specification).
• Open up the pressure/ quantity regulator on the hand spray gun completely, direction + until stop.
• Set the working pressure/quantity regulation at the pump unit to the minimum quantity.
• Set temperature regulator to min. 100°C.

Interrupting Operation

• Secure the trigger gun. To do so, push the safety catch towards the front.

After Operation with Detergent

• Set dosing value for detergent to “0”.
• Set the appliance switch to “1” (operation with cold water).
• Open the hand spray gun and rinse the appliance for at least 1 minute.

Turn off the Appliance

DANGER
Danger of scalding from hot water! After the operation with hot water or steam, the device must be operated with opened gun with cold water for at least two minutes.

• Shut off water supply.
• Open the hand spray gun.
• Switch on the pump with the power switch and allow to run for about 5-10 seconds.
• Close the hand spray gun.
• Set the appliance switch to “0/OFF”.
• Pull main plug out of socket with dry hands only.
• Remove water connection.
• Activate hand spray gun until device is pressure less.
• Secure the trigger gun. To do so, push the safety catch towards the front.

Storing the Appliance

• Lock in the steel pipe into the holder of the appliance hood.
• Roll up high pressure hose and electrical conduit and hang them into the respective holders.

Device with hose drum:

• Before rolling up, stretch out the high pressure hose.
• Turn the hand crank clockwise (Direction of the arrow).

Note: Do not twist high pressure hose and electrical conduit.

Frost Protection

ATTENTION
Risk of damage! Frost will destroy the appliance if the water has not been completely drained.

• Store in a frost free area.
  If the device is connected to a chimney, the following must be observed:

ATTENTION
Threat of damage by penetrating cold air through the chimney.

• Disconnect device from chimney when outside temperature drops below 0°C.

If it is not possible to store frost free, shut down device.

Shutdown

For longer work breaks or if a frost free storage is not possible:

• Empty detergent tank.
• Drain water.
• Flush device with anti-freeze agent.

Dump Water

• Screw off water supply hose and high pressure hose.
• Screw off supply hose at boiler bottom and drain heating spiral empty.
• Operate device for max. 1 minute until the pump and conduits are empty.

Flush Device with Anti-Freeze Agent
Note: Observe handling instructions of the anti-freeze agent manufacturer.

• Fill anti-freeze agent of the trade into swimmer container.
• Switch on appliance (without heater) till the appliance has been completely rinsed.

A certain corrosion protection is achieved with this as well.

Storage

CAUTION
Risk of personal injury or damage! Consider the weight of the appliance when storing it.

Transport

ATTENTION
Risk of damage! When loading the appliance with a forklift, observe the illustration.
ATTENTION
Protect the trigger from damage during transport.
CAUTION
Risk of personal injury or damage! Mind the weight of the appliance during transport.

• When transporting in vehicles, secure the appliance according to the guidelines from slipping and tipping over.

Care and Maintenance

DANGER
Risk of injury by inadvertent start-up of appliance and electric shock. Prior to all work on the appliance, switch off the appliance and pull the power plug.

• Shut off water supply.
• Open the hand spray gun.
• Switch on the pump with the power switch and allow to run for about 5-10 seconds.
• Close the hand spray gun.
• Set the appliance switch to “0/OFF”.
• Pull main plug out of socket with dry hands only.
• Remove water connection.
• Activate hand spray gun until device is pressure less
• Secure the trigger gun. To do so, push the safety catch towards the front.
• Allow device to cool down.

Your Kärcher vender will inform you about the performance of a periodic safety inspection resp. signing of a maintenance contract.

Maintenance Intervals

Weekly

• Clean the sieve in the water connection.
• Clean the fine filter.
• Check oil level.

ATTENTION
Risk of damage! In case of lacteous oil inform KÃrcher customer service immediately

Monthly

• Clean sieve in the water shortage safe guard.
• Clean filter at the detergent suck hose.

Every 500 operating hours, at least annually

• Oil change.
• Have the maintenance of the device performed by the customer service.

At least every 5 years, recurring

• Perform the pressure test as per manufacturer’s instructions.

Maintenance Works

Clean the sieve in the water connection

• Take out sieve.
• Clean sieve in water and reinstall.

Cleaning the fine filter

• Unpressurised the appliance.
• Unscrew the fine filter from the pump head.
• Remove the fine filter and the filter insert.
• Clean the filter with clean water or com-pressed air.
• Reinstall in reverse sequence.

Clean sieve in the water shortage safe guard

• Loosen covering nut and take off hose.
• Take out sieve.

Note: If necessary turn in screw M8 appr. 5 mm inwards and therewith pull out sieve.

• Clean sieve in water.
• Push sieve inwards.
• Put on hose.
• Tighten covering nut firmly.

Clean filter at the detergent suck hose

• Take out detergent suck supports.
• Clean filter in water and reinstall.

Oil change

• Ready a catch bin for appr 1 Litre oil.
• Loosen release screw.

Dispose of old oil ecologically or turn in at a gathering point.

• Tighten release screw.
• Fill oil slowly up to the MAX marking.

Note: Air pockets must be able to leak out. For oil type refer to technical specifications.

Troubleshooting

DANGER
Risk of injury by inadvertent start-up of appliance and electric shock. Prior to all work on the appliance, switch off the appliance and pull the power plug.

Indicator Lamp Pump

1x blinking

• Lack of oil
  • Replenish oil.

2x blinking

• Leak in the high pressure system
  • Check high pressure system and connections for tightness.

3x blinking

• Water shortage
  • Check water supply, check connections.

4x blinking

• Obstructed reed switch in the water shortage safe guard.
  • Check water shortage safe guard.

Indicator Lamp of Rotational Direction is Blinking (Not HDS 7/9, HDS 7/10, HDS 7/12)

• Exchange the poles at the appliance plug.

Indicator lamp “Ready for use” Turns off

• No line voltage, see “Appliance is not running”.

Engine Indicator Lamp

1x blinking

• Contactor error
  • Set the appliance switch to “0/OFF”.
  • Turn on the appliance.
• Error occurs repeatedly.
  • Inform Customer Service.

2x blinking

• Engine overload/overheat
  • Set the appliance switch to “0/OFF”.
  • Allow device to cool down.
  • Turn on the appliance.
• Error occurs repeatedly.
  • Inform Customer Service.

3x blinking

• Fault in the voltage supply.
  • Check main connections and mains fuse.

4x blinking

• Excessive power consumption.
  • Check main connections and mains fuse.
  • Inform Customer Service.

Customer Service

If malfunction can not be fixed, the device must be checked by customer service.

Warranty

The warranty terms published by the relevant sales company are applicable in each country. We will repair potential failures of your appliance within the warranty period free of charge, provided that such failure is caused by faulty material or defects in manufacturing. In the event of a warranty claim please contact your dealer or the nearest authorized Customer Service Centre. Please submit the proof of purchase.

Accessories and Spare Parts

Note: When connecting the appliance to a chimney or if the device cannot be accessed visually, we recommend the installation of a flame monitor (option).
Only use original accessories and spare parts, they ensure the safe and trouble-free operation of the device.
For information about accessories and spare parts, please visit www.kaercher.com.

EU Declaration of Conformity

We hereby declare that the machine described below complies with the relevant basic safety and health requirements of the EU Directives, both in its basic design and construction as well as in the version put into circulation by us. This declaration shall cease to be valid if the machine is modified without our prior approval.

Authorised Documentation Representative S. Reiser
Alfred Kärcher GmbH Co. KG
Alfred-Kärcher-Str. 28 – 40
71364 Winnenden (Germany)
Phone: +49 7195 14-0
Fax: +49 7195 14-2212

Technical Specifications

Recurring Tests

Note: The recommended testing frequencies of the respective statutory regulations of the country of operation are to be followed.

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