K RCHER HDS 9/20-4 M/MXA High Pressure Washer User Manual

: June 17, 2024
: K RCHER

K RCHER HDS 9/20-4 M/MXA High Pressure Washer 3

K RCHER HDS 9/20-4 M/MXA High Pressure Washer

General notes

Read these original instructions and the enclosed safety instructions before using the device for the first time. Act in accordance with them.
Keep both books for future reference or for future owners.

If the operating instructions and safety instructions are not observed, the device can be damaged and dangers could arise for users and other persons.
Notify the dealer immediately in the case of shipping damage.
Check the package contents when unpacking for missing accessories or for damage. Scope of delivery see illustration A.
At operating elevations of approx. 800 m above sea level or higher, please contact your dealer to have the burner setting adjusted to the elevation and reduced oxygen content.

Environmental protection

The packing materials can be recycled. Please dispose of packaging in accordance with the environmental regulations.
Electrical and electronic devices contain valuable, recyclable materials and often components such as batteries, rechargeable batteries or oil, which – if handled or disposed of incorrectly – can pose a potential danger to human health and the environment. However, these components are required for the correct operation of the device. Devices marked by this symbol are not allowed to be disposed of together with the household rubbish.
Notes on the content materials (REACH)
Current information on content materials can be found at: www.kaercher.de/REACH

Supplementary environmental protection instructions

Please do not allow engine oil, heating oil, diesel and petrol to enter the environment. Please protect the ground and dispose of old oil in an environmentally friendly manner.

Overview of the device

Description of the device

Illustration A
Illustration B

Pressure/quantity regulator of the pump unit
Pressure gauge
Rest for high-pressure gun (both sides)
Steering roller with parking brake
Recess for detergent suction hose
Filling hole for system care RM 110/RM 111
Water connection with sieve
Water connection adapter
EASY!Lock high-pressure hose
EASY!Lock spray lance
High-pressure nozzle (stainless steel)
EASY!Lock high-pressure connection
Power supply cable
Safety lever
Trigger
Folding compartment
Storage compartment for accessories (only HDS M/S)
Safety latch of the high-pressure gun
EASY!Force high-pressure gun
Pressure/quantity regulator on the high-pressure gun
Detergent dosing valve
Control panel
Storage compartment for spray lance
Connection hose of the hose reel (HDS MXA/SXA only)
Step recess
Filling opening for detergent 2
Filling opening for detergent 1
Type plate
Cable clips
Filling hole for fuel
Fuel sieve
Handle bar
Hose reel (HDS MXA/SXA only)
Cover lock
Cover
Burner
Support for spray lance
Check valve of the detergent suction
Oil drain plug with retaining clip
Oil level gauge
Oil tank
Pressure switch on the overflow valve
Pressure switch on the cylinder head
Fine filter (water)
Detergent suction hose 1 with filter
Detergent suction hose 2 with filter
Empty signal sensor
Fuel filter
Burner blower
Fuel pump
Fuel pump solenoid valve
Water shortage safeguard
Float container
System care container

Control panel

Illustration C
0 = off

Power switch
Operating mode: Cold water operation
Oper a ting mode: Hot water operation (e = Eco level, hot water max. 60°C)
Operating mode: Steam operation
QR code for information
Indicator light rotation direction
Service indicator light
Standby mode indicator light
Fuel indicator light
System care indicator light

Colour coding

Control elements for the cleaning process are yellow.
Control elements for maintenance and servicing are light grey.

Symbols on the device

| Do not aim the high-pressure jet may at persons, animals, live electrical equipment or the device itself. Protect the device against frost.
---|---
| Danger of injury from electrical voltage. Only qualified electricians or authorised and qualified technical specialists are permitted to work on the electrical systems.

Health risk from poisonous exhaust gases.
Never inhale the exhaust gases.

Risk of burns from hot surfaces.

| Risk of injury! Do not reach in.
---|---
| QR code for information

Intended use

Only use the device for cleaning, e.g. machines, vehicles, buildings, tools, façades, terraces and garden equipment.

DANGER
Use at petrol stations or other hazard zones Risk of injury Adhere to the respective safety regulations.
Note
Do not allow wastewater containing mineral oil to penetrate soil, waterways or the sewage system. Only wash the motor or the undercarriage in suitable places with an oil separator.

Water supply limit values

ATTENTION
Dirty water
Premature wear and tear or deposits in the device Supply the device using only clean water, or recycled water that does not exceed the specified limit values.
The following limit values apply to the water supply:

pH value: 6.5-9.5
Electrical conductivity: Conductivity of fresh water + 1200 µS/cm, maximum conductivity 2000 µS/cm
Settleable particles (sample volume 1 l, settling time 30 minutes): < 0.5 mg/l
Filterable particles: < 50 mg/l, no abrasive substances
Hydrocarbons: < 20 mg/l
Chloride: < 300 mg/l
Sulphate: < 240 mg/l
Calcium: < 200 mg/l
Total hardness: < 28 °dH, < 50° TH, < 500 ppm (mg CaCO3/l)
Iron: < 0.5 mg/l
Manganese: < 0.05 mg/l
Copper: < 2 mg/l
Active chloride: < 0.3 mg/l
Free of unpleasant odours

Safety instructions

The following safety instructions apply to the device:

Observe the respectively applicable national regulations for liquid jet cleaners.
Observe the respectively applicable national accident prevention regulations. Liquid jet cleaners must be tested regularly and the results of the test recorded in writing.
Note that the heating system in the device is classified as a furnace. Furnaces must be inspected regularly according to the applicable national regulations.
According to the application national regulations, this device must be initially commissioned by a qualified person when used commercially. KÄRCHER has already performed and documented this initial commissioning for you. You can request the documentation for this from your KÄRCHER partner.
Please provide the part number and works number of the device when requesting documentation.
We explicitly state that the application national regulations require that this device must be inspected regularly by a qualified person. Please contact your KÄRCHER partner for this.
No modifications may be made to the device or accessories.

Safety devices

Safety devices protect the user and may not be disabled or functionally circumvented.

Overflow valve with 2 pressure switches

When reducing the water volume at the pump head or with the pressure/quantity regulator on the high-pressure gun, the overflow valve opens and part of the water flows back to the pump suction side.
If the high-pressure gun is closed so that all the water flows back to the pump suction side, the pressure switch on the overflow valve switches off the pump.
If the high-pressure gun is opened again, the pressure switch on the cylinder head switches the pump on again.
The overflow valve is set and sealed at the factory.
The adjustment is performed only by customer service.

Safety valve

The safety valve opens if the overflow valve or pressure switch is faulty.
The safety valve is adjusted and sealed at the factory. The adjustment is performed only by customer service.

Water shortage safeguard

The water shortage safeguard prevents the burner from switching on when there is a lack of water.

Exhaust gas thermostat

The exhaust gas thermostat switches the device off when the emission temperature is too high.

Initial startup

WARNING
Damaged components
Risk of injury
Check that the device, accessories, supply lines and connections are in perfect condition. If the condition is not perfect, you may not use the device.

Apply the parking brake.

Mounting the handlebar

ATTENTION
Danger from improper installation
Risk of damage
When hooking the electric supply cable into the cable guide of the right handle bracket, make sure that the cable does not get damaged.

Mount the handlebar, observing the tightening torque of the screws (6.5-7.0 Nm).
Illustration D

Fastening the hubcaps

Fasten the hubcaps.
Illustration E

Mounting the hose reel (HDS M/S only)

Fold the lid of the storage compartment vertically upwards and remove it.
Illustration F
$Mounting the hose reel $HDS M/S only$$
Fold out the folding compartment.
Unlock the storage compartment from below using the 2 latches and pull it out upwards.
Illustration G
$Mounting the hose reel $HDS M/S only$$
Close the folding compartment.
Insert the hose reel into the two guide rails, let it slide down slowly and lock into place.
Illustration H
$Mounting the hose reel $HDS M/S only$$
Fit the hose reel connection hose to the high-pressure connection of the device.

Mounting the high-pressure gun, spray lance, nozzle and high-pressure hose

Device with ANTI!Twist: Attach the yellow high-pressure hose connection to the high-pressure gun.
Note
The EASY!Lock system connects components quickly and safely via a single turn of the quick-release thread.

Connect the spray lance to the high-pressure gun and hand-tighten (EASY!Lock).
Illustration I
Plug the high-pressure nozzle onto the spray lance.
Fit the union nut and hand-tighten (EASY!Lock).
Device without a hose reel: Connect the high-pressure hose to the high-pressure gun and high-pressure connection of the device and tighten hand-tight (EASY!Lock).
Device with a hose reel: Connect the high-pressure hose to the high-pressure gun and hand-tighten (EASY!Lock).
ATTENTION
Rolled-up high-pressure hose
Risk of damage
Fully unroll the high-pressure hose before starting operation.

System care

Define system care

Note
RM 110 prevents calcification of the heating coil in the presence of hard water.

Note
RM 111 prevents the formation of black water and cares for the pump in the presence of soft water

Water hardness (°dH)	System care products to be used
<3	RM 111
>3	RM 110

Determine the local water hardness via the local supply company or with a hardness tester (order number 6.768-004.0).

Filling up system care

Note
A test container of system care is included in the scope of delivery.

System care is a highly effective agent for preventing calcification of the pump when operating with calcareous tap water. This is drip-fed dosed into the float tank.
The dosage is set to medium water hardness at the factory.

Fill up the system care.

Refuelling

DANGER
Unsuitable fuel
Risk of explosion Only use diesel fuel or light heating oil. Unsuitable fuels, such as petrol, must not be used.

ATTENTION
Operation with an empty fuel tank
Destruction of the fuel pump
Never operate the device with an empty fuel tank.

Open the tank cap.
Refill the fuel.
Close the tank cap.
Wipe up the spilt fuel.

Refilling detergent

DANGER
Unsuitable detergents
Risk of injury
Use only KÄRCHER products.
Never fill with solvents (e.g. petrol, acetone, thinners).
Avoid contact with eyes and skin.
Observe the safety and handling instructions of the detergent manufacturer.

Note
Kärcher offers an individual range of cleaning and care products. Your dealer will be happy to advise you.

Fill with detergent.

Water connection

See the “Technical data” for the connected loads.

Note
The supply hose is not included in the scope of delivery.

Connect the supply hose (minimum length 7.5 m, minimum diameter 3/4″) to the water connection of the device and to the water inlet (e.g. tap) using the water connection adapter.
Open the water inlet.

Suctioning water from the container

DANGER
Suction of fluids containing solvents or drinking
water
Risk of injury and damage, contamination of drinking
water
Never extract fluids containing solvents such as paint thinner, petrol, oil or unfiltered water. The seals in the device are not resistant to solvents. The spray mist of solvents is highly flammable, explosive and poisonous.
Never extract water from drinking water tanks.
If the device is to draw water from an external container, the following modification is required:

Open the filling hole for system care.
Illustration J
Unscrew and remove the system care cover.
Remove the water connection on the fine filter.
Unscrew the fine filter on the pump head.
Remove the system care container.
Illustration K
Unscrew the upper supply hose to the float tank.
Connect the upper supply hose to the pump head.
Illustration L
Plug the flushing line of the detergent dosing valve onto the blind plug.
Connect the suction hose (diameter at least 3/4″) with filter (accessory) to the water connection.
Hang the suction hose in an external water source.
Note
Maximum suction height: 0.5 m
Until the pump draws in water: Set the pressure/ quantity regulator of the pump unit to the maximum value and close the detergent dosing valve.
Reinstall in the in the reverse order. Make sure that the solenoid valve cable is not pinched on the system care container.

Electrical connection

DANGER
Unsuitable electrical extension cables
Electric shock
Only use approved and appropriately marked electrical extension cables with a sufficient line cross section for outdoors.
Make sure that the plug and coupling of an extension cable used are watertight.
Always unroll extension cables completely.
ATTENTION
Exceeding the grid impedance
Electrical shock in the event of a short-circuit The maximum permissible mains grid impedance at the electrical connection point (see Technical data) must not be exceeded.
Contact your electricity supplier in the case of any uncertainties regarding the mains grid impedance at your electrical connection point.

For connected loads, see technical data and type plate.
The electrical connection must be carried out by an electrician and comply with IEC 60364-1.

Operation

DANGER
Flammable fluids
Risk of explosion
Do not spray inflammable liquids.
DANGER
Operation without spray lance
Risk of injury
Never operate the device without the spray lance installed.
Before each use, check that the spray lance is firmly seated. The screw connection of the spray lance must be tightened hand tight.
DANGER
High-pressure water jet
Danger of injury
Never fasten the trigger and safety lever in the actuated position.
Do not use the high-pressure gun when the safety lever is damaged.
Push the safety latch of the high-pressure gun forwards every time before starting work with the device.
Hold the high-pressure gun and spray lance with both hands.
ATTENTION
Operation with an empty fuel tank
Destruction of the fuel pump
Never operate the device with an empty fuel tank.

Opening/closing the high-pressure gun

Opening the high-pressure gun: Actuate the safety lever and trigger.
Closing the high-pressure gun: Release the safety lever and trigger.

Changing nozzles

Switch off the device and operate the high-pressure gun until the device is depressurized.
Lock the high-pressure gun by pushing the safety latch forwards.
Change the nozzle.

Switching on the device

Set the trigger to the operating mode. The standby mode indicator light lights up. The device starts up briefly and switches off as soon as the working pressure is reached.
Note
If the direction of rotation indicator light lights up during operation, switch off the device immediately and rectify the fault, see “Troubleshooting”.
Unlock the high-pressure gun by pushing the safety latch to the rear. When the high-pressure gun is actuated, the device switches on again.
Note
If no water comes out of the high-pressure nozzle, bleed the pump. See help in the event of malfunctions – device does not build up pressure.

Setting the cleaning temperature

30 °C to 98 °C: Clean with hot water.
100 °C to 150 °C: Clean with steam.

Set the power switch to the desired temperature.
During steam operation: Replace the high-pressure nozzle (stainless steel) with the steam nozzle (brass) (see Operation with steam).

Setting the working pressure and flow rate

Pressure/quantity regulator of the pump unit

Turn the regulating spindle clockwise: Increase the working pressure (MAX).
Turn the regulating spindle anticlockwise: Reduce the working pressure (MIN).

Pressure/quantity regulator on the high-pressure gun

DANGER
Danger of a loose spray lance
Risk of injury
Take care to ensure that the spray lance screw connection does not release when adjusting the pressure/ quantity control.
Note
If you want to work with reduced pressure over the long
term, set the pressure on the pressure/quantity regulator of the pump unit.

Set the power switch to max. 98 °C.
Set the working pressure on the pressure/quantity regulator of the pump unit to the maximum value.
Adjust the working pressure and flow rate by turning (variable) the pressure/quantity regulator on the high-pressure gun (+/-).

Operation with detergent

Use detergents sparingly to conserve the environment.
The detergent must be suitable for the surface to be cleaned.

Note
The guide values on the control panel refer to the maximum working pressure.
Note
If detergent is to be sucked in from an external container, route the detergent suction hose through the recess to the outside.

Set the concentration of the detergent via the detergent dosing valve according to the manufacturer’s instructions.

Cleaning

Note
Always initially direct the high-pressure jet at the object to be cleaned from a distance to avoid damage due to excessive pressure.

Set the working pressure, the cleaning temperature and the detergent concentration according to the surface to be cleaned.

Recommended cleaning method

Loosen dirt: Spray the detergent sparingly and let it take effect for 1… 5 minutes, but do not let it dry.
Remove dirt: Rinse off the loosened dirt with the high-pressure jet.

Cold water operation

For removing light contamination and for rinsing, e.g. garden machines, terrace, tools.

Adjust the working pressure as required.

Eco level

The device works in the most economical temperature range (max. 60 °C).

Operation with hot water/steam

Recommended cleaning temperatures

30-50 °C: Light soiling
Max. 60 °C: Soiling containing protein, e.g. in the food industry
60-90 °C: Car cleaning, machine cleaning
100-110 °C: Preservative removal, very greasy soiling
Up to 140 °C: Thawing aggregates, façade cleaning in some cases

Operation with hot water

DANGER
Hot water
Risk of scalding
Avoid contact with hot water.

Set the power switch to the desired temperature.

Steam operation

DANGER
Hot steam
Risk of scalding
At work temperatures above 98 °C, the working pressure must not exceed 3.2 MPa (32 bar).
It is therefore essential that the following measures are carried out:

Replace the high-pressure nozzle (stainless steel) with the steam nozzle (brass, part no. see Technical Data).
Completely open the pressure/quantity regulator on the high-pressure gun, towards + as far as it will go.
Set the working pressure on the pressure/quantity regulator of the pump unit to the minimum value.
Set the power switch to min. 100 °C.

Interrupting operation

Lock the high-pressure gun by pushing the safety latch forwards.

After operation with detergent

Set the detergent dosing valve to “0”.
Set the power switch to level 1 (operation with cold water).
Flush the device clean for at least 1 minute with the high-pressure gun open.

Switching off the device
DANGER
Risk of injury from hot water or steam
Risk of scalding
After operation with hot water or steam, the device must be operated with the gun opened with cold water for at least two minutes to cool it down.

Close the water inlet.
Open the high-pressure gun.
Switch on the pump with the power switch and let it run for 5-10 seconds.
Close the high-pressure gun.
Set the power switch to “0”.
Only pull the mains plug out of the socket only when your hands are dry.
Remove the water connection.
Actuate the high-pressure gun until the device is completely depressurised.
Lock the high-pressure gun by pushing the safety latch forwards.

Storing the device
Note
Do not kink the high-pressure hose or the electrical line.

Snap the spray lance into the holder on the device cover.
Roll up the high-pressure hose and the electrical line and hang them on the supports.
Device with a hose reel: Stretch out the high-pressure hose before winding it up.
Device with a hose reel: Unlock the hose reel by pulling on the high-pressure hose and let the high-pressure hose slowly roll up. Control the reeling speed by holding the hose.

Frost protection

ATTENTION

Frost hazard
Destruction of the device through freezing water
Store the device that has not been completely drained
of water in a frost-free place.
In the case of devices that are connected to a chimney,
the ingress of cold air must be taken into account.

ATTENTION
Cold air entering through the chimney
Risk of damage
When the exterior temperatures are below 0 °C, disconnect the device from the chimney.

Shut down the device if frost-free storage is not possible.

Shutting down

For longer breaks in operation or when frost-free storage is not possible:

Drain the detergent tank.
Drain the water.
Flush the device with antifreeze.

Draining the water

Unscrew the water supply hose and the high-pressure hose.
Unscrew the supply line at the boiler base and allow the heating coil to drain.
Allow the device for run for a maximum of 1 minute until the pump and lines are empty.

Flushing device with antifreeze

Note
Observe the handling instructions of the anti-freeze manufacturer.

Pour a commercially available antifreeze into the float tank.
Switch on the device (without burner) and allow it to run until the device is completely flushed.
This also provides a certain degree of corrosion protection.

Transport

ATTENTION
Improper transport with a factory truck
Risk of damage Pay attention to the orientation of the device when transporting it with a factory truck.
Illustration M

ATTENTION
Improper transportation
Risk of damage
Protect the trigger of the high-pressure gun from damage.

CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during transportation.

When transporting the device in vehicles, secure it to prevent it from slipping or overturning in accordance with the respectively applicable guidelines.

Storage

CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during storage.

Care and maintenance

DANGER

Inadvertently starting up device, touching live components
Risk of injury, electric shock
Switch off the device before performing any work on the device.
Remove the mains plug.

Close the water inlet.
Open the high-pressure gun.
Switch on the pump with the power switch and let it run for 5-10 seconds.
Close the high-pressure gun.
Set the power switch to “0”.
Only pull the mains plug out of the socket only when your hands are dry.
Remove the water connection.
Actuate the high-pressure gun until the device is completely depressurised.
Lock the high-pressure gun by pushing the safety latch forwards.
Allow the device to cool down.

Safety inspection/maintenance contract

You can agree on regular safety inspections or close a maintenance contract with your dealer. Please seek advice on this.

Maintenance intervals

Weekly

ATTENTION
Milky oil
Device damage
If the oil is milky, inform authorized Customer Service immediately.

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

Monthly

Clean the filter on the detergent suction hose.

Every 500 operating hours, at least annually

Change the oil.
Have the device maintained by Customer Service.

Recurring every 5 years at the latest

Perform a pressure test according to the manufacturer’s specifications.

Maintenance work

Mounting the replacement high-pressure hose (HDS MXA/SXA only)

WARNING
Risk of injury
The hose reel may turn very fast unexpectedly if it is released.
Carefully follow the steps below and secure the hose reel as described.
Note
Only high-pressure hoses in the “Ultra Guard” version are suitable for this device.

Lift off the cover on the hose reel with a flat head screwdriver.
Illustration N
Completely unroll the high-pressure hose from the hose reel.
Insert a 10 mm Allen key through the hexagonal opening in the casing. Insert the key until the hose reel is blocked.
Illustration O

Illustration P
Unscrew the 2 screws.
Illustration Q
Remove the hose stopper from the high-pressure hose.
Pull out the locking hook.
Illustration R
Pull the high-pressure hose out of the hose connection.
Insert the new high-pressure hose through the hose guide rollers and insert it into the hose connection.
Observe the direction of rotation of the hose reel.
Insert the locking hook into the hose connection.
Illustration S
Check that all washers are behind the locking hook.
Fit the hose stopper to the other end of the high pressure hose. Distance to the end of the hose about 1 m (to the high-pressure gun).
Connect the device to the water supply and power supply, put it into operation and check the connection for leaks.
Tension the hose and keep it tensioned. Pull out the Allen key while the hose is taut.
Unlock the hose reel by pulling on the high-pressure hose and let the high-pressure hose slowly roll up. Control the reeling speed by holding the hose.
Replace the cover.

Clean the sieve in the water connection

Remove the sieve.
Clean the sieve in water.
Install the sieve again.

Cleaning the fine filter

Depressurise the device.
Unscrew the fine filter on the pump head.
Dismantle the fine filter and take out the filter inlay.
Clean the filter inlay with clean water or compressed air.
Assemble in the reverse order.

Cleaning the fuel sieve

Knock out the fuel sieve. Do not allow fuel to enter the environment.

Clean the filter on the detergent suction hose

Pull out the detergent suction hose port.
Clean the filter in water.
Fit the filter again.

Changing the oil

See the “Technical data” section for the oil filling quantity and type.

Provide a catch pan for approx. 1 litre of oil.
Lever out the safety clip with a flat-blade screwdriver and pull out the oil drain plug.
Drain the oil into the catch pan.
Note
Dispose of the old oil in an environmentally friendly manner or hand it over to an authorised collection point.
Push the oil drain plug back in and secure it with the safety clip.
Slowly fill with new oil until the MAX marking on the oil tank. The air bubbles must be able to escape.
Illustration T

Troubleshooting guide

DANGER
Inadvertently starting up device, touching live components
Risk of injury, electric shock
Switch off the device before performing any work on the device.
Remove the mains plug

The rotation direction indicator light lights up

Swap the pins on the power plug.
Illustration U

The standby mode indicator light goes out or the
device does not run
No mains voltage

Check the power supply and the supply line.

Service indicator light flashes 1x
Water shortage

Check the water connection and the supply lines.

Leak in the high-pressure system

Check the high-pressure system and the connections for leaks.

Service indicator light flashes 2x
Fault in the voltage supply or current consumption of the motor too high

Check the power supply and the mains power supply circuit breaker.
Contact Customer Service.

The service indicator light flashes 3x
Motor overloaded/overheated

Set the power switch to “0”.
Allow the device to cool down.
Switch the device on.

Malfunction occurs repeatedly

Contact Customer Service.

The service indicator light flashes 4x
Exhaust gas thermostat has triggered

Set the power switch to “0”.
Allow the device to cool down.
Switch the device on.

Malfunction occurs repeatedly

Contact Customer Service.

Service indicator light flashes 5x
Reed switch stuck in the water shortage safeguard or magnetic piston stuck

Contact Customer Service.

The service indicator light flashes 6x
Flame sensor has switched off the burner

Contact Customer Service.

The fuel indicator light lights up
Fuel tank is empty

Refill the fuel.

System care indicator light lights up
System care container is empty

Fill up the system care.

Device not building up pressure
Air in the system

Venting the pump:
a Set the detergent dosing valve to “0”.
b With the high-pressure gun open, switch the device on and off several times via the power switch.
c Open and close the pressure/quantity regulator of the pump unit with the high-pressure gun open.
Note
The venting process is accelerated by removing the high-pressure hose from the high-pressure connection.
Top up the detergent if necessary.
Check connections and lines.

Pressure is set to MIN

Set the pressure to “MAX”.

Sieve in the water connection/fine filter is dirty

Clean the sieve.
Clean the fine filter, replace if necessary.

Water supply volume too low

Check the water supply volume (see “Technical data”).

Device is leaking, water is dripping from the bottom of the device
Pump leaking

If there is a significant leak, have the device checked by Customer Service.

Note
3 drops/minute are permitted.

The device switches on and off continuously when the high-pressure gun is locked
Leak in the high-pressure system

Check the high-pressure system and the connections for leaks.

The device does not suck in any detergent

Let the device run with the detergent dosing valve open and the water inlet closed until the float tank has been sucked empty and the pressure drops to “0”.
Open the water inlet again.
If the pump still does not suck in detergent, this can be due to the following reasons:

The filter in the detergent suction hose is dirty

Clean the filter.

Check valve is stuck

Pull off the detergent hose and free up the check valve with a blunt object.

Burner not igniting
Fuel tank is empty

Refill the fuel.

Water shortage

Check the water connection and the supply lines.

Fuel filter dirty

Change the fuel filter.

No ignition spark

If no ignition spark is visible through the sight glass during operation, have the device checked by Customer Service.

The set temperature is not reached when operating with hot water
Working pressure/flow rate too high

Reduce the working pressure/flow rate via the pressure/quantity regulator of the pump unit.

Sooty heating coil

Have the soot removed from the device by Customer Service.

Customer Service department

If the malfunction cannot be corrected, the device must be checked by the Customer Service department.

Warranty

The warranty conditions issued by our sales company responsible apply in all countries. We shall remedy possible malfunctions on your device within the warranty period free of cost, provided that a material or manufacturing defect is the cause. In a warranty case, please contact your dealer (with the purchase receipt) or the next authorised customer service site.
(See overleaf for the address)

Accessories and spare parts

Note
If the device is connected to a chimney or if the device cannot be seen, we recommend installing a flame monitor (option).
Only use original accessories and original spare parts.
They ensure that the appliance will run safely and faultfree.
Information on accessories and spare parts can be found at www.kaercher.com.

Declaration of Conformity

EU Declaration of Conformity

We hereby declare that the machine described below complies with the relevant basic safety and health requirements in the EU Directives, both in its basic design and construction as well as in the version placed in circulation by us. This declaration is invalidated by any changes made to the machine that are not approved by us.

Product: High-pressure cleaner
Type: 1.071-xxx

Currently applicable EU Directives
2000/14/EC
2006/42/EC (+2009/127/EC)
2009/125/EC
2011/65/EU
2014/30/EU
2014/53/EU
2014/68/EU

Category of the assembly
II

Conformity process
Module H

Heating coil
Module H conformity evaluation

Control block
Module H conformity evaluation

Various pipelines
Conformity evaluation Art. 4 Para. 3

Harmonised standards used
EN IEC 63000: 2018
EN 55014-1: 2017 + A11: 2020
EN 55014-2: 2015
EN 60335-1
EN 60335-2-79
EN 61000-3-2: 2014
EN 62233: 2008
HDS 9/20-4, HDS 10/21-4, HDS 12/18-4:
EN 61000-3-3: 2013
HDS 13/20-4:
EN 61000-3-11: 2000

Commission Regulation(s)
(EU) 2019/1781

Applied specifications:
AD 2000 based on
TRD 801 based on

Name of stated position:
For 2014/68/EU
TÜV Rheinland Industrie Service GmbH
Am Grauen Stein
51105 Köln
ID no. 0035

Certificate No .:
01 202 111/Q-08 0003
Conformity evaluation procedure used
2000/14/EC: Annex V
Sound power level dB(A)
HDS 9/20-4
Measured: 74
Guaranteed: 93
HDS 10/21-4
Measured: 74
Guaranteed: 93
HDS 12/18-4
Measured: 74
Guaranteed: 93
HDS 13/20-4
Measured: 74
Guaranteed: 93

The signatories act on behalf of and with the authority of the company management.

Documentation supervisor:
S. Reiser
Alfred Kärcher SE & Co. KG
Alfred-Kärcher-Str. 28 – 40
71364 Winnenden (Germany)
Ph.: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2022/10/01

Declaration of Conformity (UK)

We hereby declare that the product described below complies with the relevant provisions of the following UK Regulations, 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 product is modified without our prior approval.
Product: High-pressure cleaner
Type: 1.071-xxx

Currently applicable UK Regulations
S.I. 2001/1701 (as amended)
S.I. 2008/1597 (as amended)
S.I. 2010/2617 (as amended)
S.I. 2012/3032 (as amended)
S.I. 2016/1091 (as amended)
S.I. 2017/1206 (as amended)
2014/68/EU

Category of the assembly
II

Conformity process
Module H

Heating coil
Module H conformity evaluation

Control block
Module H conformity evaluation

Various pipelines
Conformity evaluation Art. 4 Para. 3

Designated standards used
EN IEC 63000: 2018
EN 55014-1: 2017 + A11: 2020
EN 55014-2: 2015
EN 60335-1
EN 60335-2-79
EN 61000-3-2: 2014
EN 62233: 2008
HDS 9/20-4, HDS 10/21-4, HDS 12/18-4:
EN 61000-3-3: 2013
HDS 13/20-4:
EN 61000-3-11: 2000

Commission Regulation(s)
(EU) 2019/1781

Applied specifications:
AD 2000 based on
TRD 801 based on

Name of stated position:
For 2014/68/EU
TÜV Rheinland Industrie Service GmbH
Am Grauen Stein
51105 Köln
ID no. 0035

Certificate No .:
01 202 111/Q-08 0003

Conformity assessment procedure used
S.I. 2001/1701 (as amended): Schedule 8

Sound power level dB(A)
HDS 9/20-4
Measured: 74
Guaranteed: 93
HDS 10/21-4
Measured: 74
Guaranteed: 93
HDS 12/18-4
Measured: 74
Guaranteed: 93
HDS 13/20-4
Measured: 74
Guaranteed: 93
The signatories act on behalf of and with the authority of the company management.

Documentation supervisor:
S. Reiser
Alfred Kärcher SE & Co. KG
Alfred-Kärcher-Str. 28 – 40
71364 Winnenden (Germany)
Ph.: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2022/10/01

Technical data

| | HDS 9/20-4 M/MXA| HDS 10/21-4 M/MXA| HDS 12/18-4 S/SXA| HDS 13/20-4 S/SXA
---|---|---|---|---|---
Electrical connection
Mains voltage| V| 400| 400| 400| 400
Phase| ~| 3| 3| 3| 3
Power frequency| Hz| 50| 50| 50| 50
Degree of protection| | IPX5| IPX5| IPX5| IPX5
Protection class| | I| I| I| I
Power rating| kW| 7,0| 8,0| 8,0| 9,5
Power protection (C-type, gL/gG)| A| 16| 16| 16| 25
Maximum permissible mains grid impedance| Ω| | | | 0.402
Water connection
Feed pressure (max.)| MPa (bar)| 1,0 (10)| 1,0 (10)| 1,0 (10)| 1,0 (10)
Input temperature (max.)| °C| 30| 30| 30| 30
Input amount (min.)| l/h (l/min)| 1200 (20)| 1300 (21,7)| 1400 (23,3)| 1500 (25)
Suction height (max.)| m| 0,5| 0,5| 0,5| 0,5
Device performance data
Water flow rate| l/h (l/min| 450-900 (7,5- 15)| 500-1000 (8,3-16,7)| 500-1200 (8,3-20)| 600-1300 (10-21,7)
Water operating pressure with standard nozzle| MPa (bar)| 3-20 (30-200)| 3-21 (30-210)| 3-18 (30-180)| 3-20 (30-200)
Excess operating pressure safety valve (maximum)| MPa (bar)| 24 (240)| 24 (240)| 24 (240)| 24 (240)
Steam operation flow rate| l/h (l/min)| 350-420 (5,8- 7,0)| 380-480 (6,3- 8,0)| 430-500 (7,2- 8,3)| 485-648 (8,1- 10,8)
Steam operation operating pressure with steam nozzle (max.)| MPa (bar)| 3,2 (32)| 3,2 (32)| 3,2 (32)| 3,2 (32)
Part no. of steam nozzle| | 2.114-004.0 (40060)| 2.114-006.0 (40070)| 2.114-010.0 (40090)| 2.114-011.0 (40100)
Hot water operating temperature (maximum)| °C| 98| 98| 98| 98
Steam operation working temperature| °C| 155| 155| 155| 155
Detergent flow rate| l/h (l/min)| 0-54 (0-0,9)| 0-54 (0-0,9)| 0-54 (0-0,9)| 0-54 (0-0,9)
Burner output| kW| 75| 83| 100| 108
Heating oil consumption (max.)| kg/h| 6,5| 7,3| 7,7| 9,5
High-pressure gun recoil force| N| 50| 57| 63| 72
Nozzle size of standard nozzle| | 047| 052| S: 065, SXA: 068| S: 068, SXA: 070
Dimensions and weights
Typical operating weight (M/S)| kg| 177| 183| 202| 206
Typical operating weight (MXA/SXA)| kg| 189| 195| 214| 218
Length x width x height| mm| 1330 x 750 x 1060| 1330 x 750 x 1060| 1060 1330 x 750 x 1060| 1330 x 750 x 1060
Fuel tank| l| 25| 25| 25| 25
Detergent tank| l| 20+10| 20+10| 20+10| 20+10
High-pressure pump
Oil volume| l| 1,0| 1,0| 1,0| 1,0
Oil type| | SAE 90| SAE 90| SAE 90| SAE 90
Burner
Fuel| | EL heating oil or diesel| EL heating oil or diesel| EL heating oil or diesel| EL heating oil or diesel
Determined values in acc. with EN 60335-2-79
Sound pressure level LpA| dB(A)| 75| 75| 75| 75
Uncertainty KpA| dB(A)| 3| 3| 3| 3
Sound power level LWA + uncertainty KWA| dB(A)| 93| 93| 93| 93
Hand-arm vibration value| m/s2| 3,7| 4,6| 4,6| 4,6
Uncertainty K| m/s2| 0,3| 0,3| 0,3| 0,3

Exception according to Regulation (EU) 2019/1781 Annex I Section 2 (12): j) Subject to technical changes without notice.

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71364 Winnenden (Germany)
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