Kärcher 520 MH User manual

5.959-487 01/02

520 MH

THANK YOU FOR PURCHASING A KARCHER

PRESSURE WASHER

PLEASE READ THIS LEAFLET CAREFULLY

BEFORE OPERATING YOUR MACHINE.

WHATIS APRESSURE WASHER?

A Pressure Washer is essentially a powerful electric motor driving a set

of pistons that force water through a small nozzle, thus creating a

pressurised jet of water. This provides the cleaning power behind the

Karcher Pressure Washer.

AKarcherPressureWashercanbeusedforanendlesslistofapplications

around the home and garden. It provides an efficient, economical and

labour saving way of cleaning with excellent results.

All Karcher domestic pressure washers are designed to run from a

suitablecoldwatersupplyalthoughsomemodelswillacceptawaterinlet

temperature of between 40 °C and 60 °C.

Environmental Comment - Save water with high pressure.

The Karcher Pressure Washer is environmentally friendly enabling you

to reduce your water consumption compared to a normal garden hose.

A definite advantage with a metered water supply

with the added benefit of suction mode, water can be drawn from an

open container such as a water butt.

INDEX

1. APPLICATIONS

2. SAFETY INSTRUCTIONS

3. GETTING STARTED

3.1 Contents

3.2 Water Connection

3.3 Electrical Connection

3.4 Suction Mode

3.5 Detergent

4. OPERATING YOUR PRESSURE WASHER

4.1 High Pressure Operation

4.2 Low Pressure Operation Without Brush

4.3 Low Pressure Operation With Brush

4.4 End Of Operation

5. IMPORTANT – CARE AND MAINTENANCE

6. ACCESSORIES / SPARE PARTS

7. PROBLEM CHECKLIST / TROUBLESHOOTING

8. HELP-LINE

9. TECHNICAL DATA

10. ASSEMBLY

1. APPLICATIONS

The main applications for this product are DOMESTIC

cleaning tasks:

• Cars, motorbikes, caravans, boats and bicycles

• Patio’s, fences, garden walls, pathways, driveways and house

facades – particularly useful for cleaning block driveways

• Removal of algae and moss from roofs, brickwork and

guttering

• Garden tools and machinery, furniture and barbecues

• Hygienic cleaning of animal pens and their surroundings

With the addition of Karcher accessories, the list

continues .............

• Clearing blocked drains and pipes

• Removal of old paint and rust from garden furniture and gates

• Spraying insecticide onto trees, plants and lawns

2. SAFETY INSTRUCTIONS

BEFORE STARTING UP YOUR PRESSURE WASHER PLEASE

CHECK YOU HAVE THE FOLLOWING:

We recommend you purchase these items from a reputable store

• RCD plug and socket that will interrupt electrical supply in an

emergency.

• A typical garden hose (minimum length 7.5 metres) with suitable

hoseconnection(Hoselock/Gardena type) tomatchthecoupling

on the machine (hose and connector not supplied).

•The mains voltage and supply indicated on the Rating Plate of the

machine corresponds with that of the power source.

•The insulation of the supply cable is not damaged.

•Only earthed sockets should be used.

•If you are using an extension cable it must be completely unwound

from the cable drum and be the correct diameter:

10 meter length of cable should have a cross section of 1.5

mm²

30 meter length of cable should have a cross section of 2.5

mm²

Safety Assurance

As an added precaution, your pressure washer is fitted with a safety

locking device on the Spray Gun.

AFTER USE, ALWAYS REMOVE THE PLUG FROM THE SOCKET

BEFORE CLEANING YOUR PRESSURE WASHER

3. GETTING STARTED

3.1 Contents

Upon opening the carton, if you do not

have all the items as detailed please

contact the Customer Helpline.

1 High Pressure Hose

2 Safety Lock Device

3 Spray Gun

4 Spray Lance with Pressure Regulator

5 Wash Brush

6 High Pressure Outlet

7 Detergent Suction Tube

8 Holder for High Pressure Hose

9 Transport Bracket

10 Mains Electric Lead with Plug

11 Hosepipe Connector

12 Inlet Water Connection

(with Strainer)

13 On/Off Switch

Assembly

see Page 19

Assembly

see Page 19

Please follow these instructions carefully

for troublefree cleaning.

Use the diagram on Page 6 for reference purposes.

3.2 Water Connection

• The minimum length of supply hosepipe advised for maximum user

convenience is 7.5 metres with a diameter of 12.5 mm (1/2") to allow

free flow of inlet water to the machine so avoiding backpressure and

any associated potential damage to your machine.

• Attach your supply hosepipe with its connector to the coupling on the

machine (No.11) and the other end should be connected to a suitable

water supply.

3.3 Electrical Connection

• Ensure the Power Switch (No.13) is in the “OFF” position before

connecting the factory fitted Plug attached to the Mains Electric Lead

(No.10) into an earthed socket. (it is recommended that an RCD plug

socket is used.)

If using an Extension Cable make sure it is completely unwound

from the cable drum and is the correct diameter.

3.4 SuctionMode-

anaddedbenefitoftheKarcherPressureWasher

• If you are drawing water from a static water supply such as a water

butt disconnect the high pressure hose from the machine.

• Disconnect the water connection/hosepipe with coupling (No.11)

from the machine and replace with a suction hose and filter (Part

No. 4.440.238) that can be purchased as an accessory.

• Allow the pressure washer to operate without the high pressure hose

fitted until water flows from the high pressure outlet without bubbles.

• Re-connect the high pressure hose to the high pressure outlet.

Dirt in the drawn water could damage your Pressure Washer !

To avoid this risk please use a suitable filter - Part No. 6.414.389.

3.5 Detergent

Only cleaning agents recommended by Karcher (UK) Ltd.

should be used. Unsuitable detergents could damage your

Pressure Washer and the object being cleaned.

Recommended Detergents

1. The following cleaning agent may be used undiluted:

(But further dilution is practical but trial before application)

Universal Cleaner.............................. Profi RM 555 ASF

2. The following cleaning agents are available as concentrate

and must be diluted with 9 parts of water (1 : 9) before use:

Universal Cleaner.............................. Profi RM 555 ULTRA

Automotive Cleaner........................... Profi RM 565 ULTRA

House & Garden Cleaner.................. Profi RM 570 ULTRA

Boat Cleaner ..................................... Profi RM 575 ULTRA

3. Detergent tablets are also available from some stores.

Karcher Clean Tabs (10 tablets per box):

10 Tablets dissolved in clean water provide 5 litres of cleaning

detergent.

DETAILS OF THE FULL RANGE OF DETERGENTS AND

CHEMICALS ARE AVAILABLE BY CALLING THE KARCHER

CUSTOMER HELPLINE ON 0906 6800632

4. OPERATING YOUR PRESSURE WASHER

If you have followed all the instructions so far, you are

now ready to have fun cleaning the KARCHER way!!!

• Turn on the supply water and press the Spray Gun lever (No.3) until

the water flows freely and removes all air locks from the hoses.

• You may now attach the bayonet fit Spray Lance (No.4) or required

accessory to the Spray Gun.

All accessories are bayonet fit, simply push in and twist

until they click into position !

•Once water is flowing through the machine, you may now switch

on your Karcher Pressure Washer using the Power Switch (No.13)

• You can regulate the working pressure on the spray by turning the

nozzle end of the Spray Lance (No.4) in a “+” or “-” direction.

WHEN USING YOUR KARCHER PRESSURE WASHER ON THE

HIGH PRESSURE SETTING, THE RECOMMENDED WORKING

DISTANCE BETWEEN THE NOZZLE AND THE OBJECT OR

SURFACE TO BE CLEANED IS 30 CM. IT CAN BE CLOSER IF

REQUIRED FOR PATIOS OR MASONERY.

When cleaning painted surfaces, ensure that the paint is sound and

there are no signs or rusting or blistering.

It is your responsibility to check the suitability of the surface to be cleaned.

Karcher (UK) Ltd. cannot be held responsible for any damaged caused.

4.1 High Pressure Operation

• Switch on the pressure washer (No.13)

• EnsuretheSprayLancewiththePressureRegulator(No.4)isattached

securely to the Spray Gun (No.3) and the nozzle is set to the required

setting.

• Aim the lance towards the object to be cleaned making sure the

recommended working distance is used (for reference see Page 9).

Release the Safety Lock Device (No.2) on the Spray Gun and

squeeze the lever.

The pressurised water jet alone is capable of fulfiling most

cleaning tasks around the garden or on building work but

detergent and wash brush are advantageous when cleaning

vehicles or other paint finishes.

4.2 Low Pressure Operation without Brush

• Dilute the detergent in a suitable container to the required concentra-

tion before using. (The correct dilution is dependent on the degree of

soiling of surface and is best determined by experience).

• Hang the Detergent Suction Tube (No.7) in the Detergent container.

Always ensure the Spray Gun is closed before changing the nozzle setting

• Set the nozzle to the lowest working pressure setting (-).

• Switch on the pressure washer (No.13)

• Aim the nozzle towards the object to be cleaned, release the Safety

Locking Device on the Spray Gun and squeeze the lever to apply the

detergent to the working area.

• To rinse the detergent away, close the Spray Gun, increase the

nozzle setting towards “+” setting. No detergent can be drawn in

with a high working pressure. Spray with the required jet spray

setting until no trace of detergent can be found.

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