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Failure to do this will seriously damage your machine and
invalidate the warranty.

• Connect the water supply hose and, without the lance attached,

squeeze the Spray Gun lever to run water through your pressure
washer until the water flow is constant. Then plug in to the electric
supply.

• Unless drawing water from an open water source such as a water

butt, always have a minimum of 10 metres (25 feet) of uncoiled hose
between the water tap and your machine. The internal diameter of
the feed water hose should be 12 mm (1/2”).

• Water Regulations require the use of a back-flow preventer valve at

the tap end of the supply hose.

Only use a full flow connector to connect the hose to the machine.

Electricity

• If using an electrical extension lead it must be rated at a minimum

of 13 amps.

• Always fully uncoil any extension lead when used.

Chemicals

Use of chemicals other than those recommended by Karcher could
cause significant damage which may not be covered by your warranty.

• After using chemicals, always run fresh water through your machine.

• The high pressure hose of your Karcher Pressure Washer should not

be mistreated. It is designed to withstand high pressure operation so
vehicles should NOT run over it, nor should it be pulled across sharp
or abrasive edges. These actions may weaken the hose and cause
ballooning.

IMPORTANT

REMEMBER FROST WILL DAMAGE YOUR KARCHER
PRESSURE WASHER IF IT HAS NOT BEEN COMPLETELY
EMPTIED OF WATER AFTER USE.  ALWAYS STORE IN A
FROST FREE AREA.

Summary of Contents for B 503

Page 1: ...B 503 5 960 623 11 02 2004528 Caution Do not use the unit without first having read the operating instructions...

Page 2: ...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 suitable cold...

Page 3: ...ent 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 4 5 Storage 5 IMPORTANT CARE AND MA...

Page 4: ...seful 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 surroundin...

Page 5: ...d 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 a...

Page 6: ...h Pressure Hose 4 Power Switch On Off 5 Detergent Tank 6 Detergent Suction Tube with Filter And Dosing Ring 7 Mains Electric Lead with Plug 8 Mains Lead Storage 9 Support Leg 10 Hosepipe Connector 11...

Page 7: ...void this risk always use the water filter No 16 3 3 Electrical Connection Ensure the Power Switch No 4 is in the OFF position before connecting the factory fitted Plug attached to the Mains Electric...

Page 8: ...before application Universal Cleaner Profi RM 555 ASF 3 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...

Page 9: ...machine you may now switch on your Karcher Pressure Washer using the Power Switch No 4 You can regulate the working pressure on the spray by turning the nozzle end of the Spray Lance No 14 in a or dir...

Page 10: ...etergent Tank No 5 with the selected detergent ensuring it is the correct concentration See Page 8 or read recommended dosage on label or Dilute the detergent to the required concentration before fill...

Page 11: ...ng adopt the following procedure Washing loose dirt away with the clean water high pressure spray Apply the detergent in low pressure mode by setting the bayonet fit spray lance No 14 to its lowest se...

Page 12: ...sure from the machine Release the lever and then secure the trigger with the Safety Locking Device to prevent accidental opening 4 5 STORAGE The Spray Gun No 12 the Spray Lance No 14 and the Wash Brus...

Page 13: ...flow connector to connect the hose to the machine Electricity If using an electrical extension lead it must be rated at a minimum of 13 amps Always fully uncoil any extension lead when used Chemicals...

Page 14: ...m Hose A flexible hose with backwards firing high pressure jet to create turbulence and dislodge blockages 2 637 728 Sandblaster Used to remove paint rust and cement from metallic and stone surfaces...

Page 15: ...ase refer to the diagram below AND identify the particular model of your machine by reference to the data plate on the underside Please write email or fax Karcher see page 17 with any parts order you...

Page 16: ...dequate mains water Clean dirt from nozzle hole with needle and rinse from the front Check inlet water flow rate Machine does not reach operating pressure Nozzle blocked worn out Inadequate mains wate...

Page 17: ...oming in In these circumstances we would ask that you try to contact us again later in the day The help line number is 0906 6800632 This help line is charged at 25p per minute It helps us if you have...

Page 18: ...ressure Max 130 bar 13 MPa at bypass Operating Pressure 20 120 bar 2 12 MPa Flow Rate 420 l h 7 0 litres per minute Detergent Intake 0 4 litres per minute Recoil Force of Spray Gun at Operating Pressu...

Page 19: ...19 10 ASSEMBLY 10 1Changing the High Pressure Hose No 3...

Page 20: ...ility 89 336 EEC amended by 91 263 EEC 92 31 EEC 93 68 EEC EU Directive on Noise Emission 2000 14 EC Harmonised standards applied DIN EN 55014 1 1999 DIN EN 60335 1 DIN EN 61000 3 2 1995 DIN EN 55014...

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