K 2.91 MD
Operating
Instructions
Before first use of the unit
read these operating
instructions and act in
accordance with them.
5.961-864.0 (05/07)
Dear Customer,
Please read and comply with
these instructions prior to the
initial operation of your appliance. Retain
these operating instructions for future refer-
ence or for subsequent possessors.
Description of the Appliance
When unpacking the product, make sure
that no accessories are missing and that
none of the package contents have been
damaged. If you detect any transport dam-
ages please contact your dealer.
Illustrations on Page 2
Proper Use
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High pressure outlet
This high-pressure cleaner is designed for
domestic use only:
Connection for water supply with filter
ON/OFF switch for appliance
Detergent suction hose with filter
Detergent tank
–
to clean machines, vehicles, buildings,
tools, facades, terraces, garden equip-
ment etc. using a high-pressure water
jet (and detergents if required).
with accessories, replacement parts
and detergents approved by Kärcher.
Observe the instructions provided with
these detergents.
Carrying handle
Transport handle, adjustable height
Support for spray lance
Storage, trigger gun
–
10 Power cable with plug
11 Bearing wheel
12 Trigger gun with safety catch
13 High pressure hose
14 Spray lance with dirt blaster
15 Spray lance with pressure regulation
(Vario Power)
Environmental protection
The packaging material can be recy-
cled. Please do not place the packag-
ing into the ordinary refuse for
disposal, but arrange for the proper
recycling.
16 Coupling element for water connection
Old appliances contain valuable ma-
terials that can be recycled. Please
arrange for the proper recycling of old
appliances. Please dispose your old
appliances using appropriate collec-
tion systems
Warranty
The terms of the guarantee applicable in
each country have been published by our
respective national distributors. We will re-
pair possible faults on your unit free of
charge within the warranty period, insofar
as the faults are caused by material defects
or defective workmanship. Guarantee
claims should be addressed to your dealer
or the nearest authorized customer service
centre, and supported by documentary evi-
dence of purchase.
English 3
sive towards the materials from which
the appliance is made.
Safety instructions
ƽ Danger
ṇ Warning
„ Never touch the mains plug and the
socket with wet hands.
„ Check the high-pressure hose for dam-
age before every use. Please arrange
for the immediate exchange of a dam-
aged high-pressure hose.
„ The appliance must not be used if the
power cable or important parts of the ap-
pliance, e.g. safety devices, high-pres-
sure hoses, spray guns, are damaged.
„ The appliance may not be used in areas
where a risk of explosion is present.
„ If the appliance is used in hazardous ar-
eas (e.g. filling stations) the corre-
sponding safety provisions must be
observed.
„ High-pressure hoses, fixtures and cou-
plings are important for the safety of the
appliance. Only use high-pressure hos-
es, fixtures and couplings recommend-
ed by the manufacturer.
„ Do not use the appliance when there
are other persons around unless they
are also wearing safety gear.
„ Unsuitable extension cables can be
hazardous. Only use extension cables
outdoors which have been approved for
this purpose and labelled with a suffi-
cient cable cross section:
„ Check the power cord with mains plug
for damage before every use. If the
power cord is damaged, please arrange
immediately for the exchange by an au-
thorized customer service or a skilled
electrician.
2
2
1 - 10 m: 1,5 mm ; 10 - 30 m: 2,5 mm
„ High-pressure jets can be
Note
dangerous if improperly
used. The jet must not be
directed at persons, ani-
„ The appliance must not be operated by
children or persons who have not been
instructed accordingly.
mals, live electrical equipment or at the
appliance itself.
„ The operator must use the appliance
properly. When working with the appli-
ance, he must consider the local condi-
tions and pay due care and attention to
other persons, in particular children,
who are nearby.
„ Observe a distance of at least 30 cm
when using the jet to clean painted sur-
faces to avoid damaging paintwork.
„ Cleaning operations which produce oily
waste water, e.g. engine washes, un-
derbody washes, may only be carried
out using washing stations equipped
with an oil separator.
„ Wear protective clothing and safety
goggles to protect against back spray
containing water or dirt.
„ Never leave the appliance unattended
when it is in operation.
„ Make sure that the power cable or ex-
tension cables are not damaged by run-
ning over, pinching, dragging or similar.
„ The jet must not be directed at other
persons or directed by the user at him/
herself to clean clothing or footwear.
„ Never use the appliance to clean ob-
jects containing hazardous substances
(e.g. asbestos).
„ Vehicle tyres or tyre valves are suscep-
tible to damage from the high-pressure
jet and may burst. The first indication of
this is a discolouration of the tyre. Dam-
aged vehicle tyres/tyre valves are high-
ly dangerous. Ensure that a distance of
at least 30 cm is observed when clean-
ing with the jet!
„ Never draw in fluids containing solvents
or undiluted acids and solvents! This in-
cludes petrol, paint thinner and heating
oil. The spray mist thus generated is
highly inflammable, explosive and poi-
sonous. Do not use acetone, undiluted
acids and solvents as they are aggres-
4 English
Protect the power cable from heat, oil,
and sharp edges.
Safety Devices
Safety devices serve to protect the user
and must not be rendered inoperational or
their functions bypassed.
„ The connection between the power cable
and extension cable must not lie in water.
„ All current-conducting parts in the work-
ing area must be protected against jet
water.
„ The appliance may only be connected
to an electrical supply which has been
installed in accordance with IEC 60364.
„ The appliance may only be connected
to alternating current. The voltage must
correspond with the type plate on the
appliance.
Power switch
The switch prevents unintented starting of
the appliance. Stop the appliance during
breaks or after operation.
Safety catch
The safety catch on the trigger gun pre-
vents the appliance from being switched on
unintentionally.
High pressure hose
„ The minimum fuse rating required at the
socket outlet is 10 A (slow-blow).
„ To avoid accidents due to electrical
faults we recommend the use of sock-
ets with a line-side current-limiting cir-
cuit breaker (max. 30 mA nominal
tripping current).
„ The plug and coupling of the extension
cable used must be watertight.
„ Always fully unroll electrical cables from
the cable drum.
The high pressure hose is specially con-
structed with reinforced walls to handle wa-
ter pressure up to 11 MPa (1600 psi) - it is
easily damaged and should be stored care-
fully.
„ Do not kink.
„ Do not drive vehicles over the hose.
„ Do not expose the hose to sharp edges
or corners.
Misuse will lead to ballooning or premature
failure and will invalidate warranty.
„ This appliance was designed to be
used with detergents which are sup-
plied or recommended by the manufac-
turer. The use of other detergents or
chemicals may compromise the safety
of the appliance.
English 5
the trigger gun and fasten it by turning it
through 90°.
Commissioning and operation
Î Open tap.
Î Plug in the main plug.
Before Startup
Î Assemble appliance as shown on
page 10.
Note: When the appliance is delivered, the
HP hose and handgun are not attached.
Please mount these before using the appli-
ance for the first time.
Î Push out the safety clip in the trigger
gun using e.g. a small screwdriver.
Î Join HP hose and trigger gun together.
Î Push clip in until it engages and check
that it is securely fastened by pulling on
the high pressure hose.
Î Set main switch to “I/ON”.
Î Press safety catch on the trigger gun to
release it and pull lever.
High pressure operation
ṇ Risk of injury
The trigger gun is subjected to a recoil force
when the water jet is discharged. Make sure
that you have a firm footing and are also hold-
ing the trigger gun and spray lance firmly.
Spray lance with pressure regulation
Carrying out the most common cleaning
tasks. The work pressure can be stageless-
ly regulated between "Min" and "Max".
Î Release the lever on the trigger gun.
Î Turn the spray lance to the desired po-
sition.
Water supply
The device is not suitable for being
operated in the drinking water net-
work. A suitable system separator
as per EN 12729 type BA is needed
to operate it on the drinking water network.
Spray lance with dirt blaster
For strong contaminations.
Water supply from mains
For connection values, see type plate/tech-
nical data.
Observe regulations of water supplier.
Î Use a fibre-reinforced hose (not included)
with a standard coupling:
Operation with detergent
Note
Detergent can only be added when the appli-
ance is being operated in low pressure mode.
Î Use spray lance with pressure regula-
tion (Vario Power).
- Minimum diameter, 1/2 inches (13 mm)
- Minimum length, 7.5 m
Î Turn the spray lance to "Mix" position -
Î Screw the coupling unit (supplied) to
the water connection on the appliance.
Î Push the water supply hose onto the
coupling unit, then connect it to the tap.
low pressure.
Detergent infeed from detergent tank
Î Fill the detergent tank with detergent
tablet and water or detergent
concentrate and water (Observe
metering recommendations on the
packaging label of the detergent.)
Î During low pressure operation, deter-
gent is automatically drawn in from the
filled detergent tank.
ṇ Caution
Never operate the high-pressure cleaner
when the tap is turned off as dry running will
damage the High pressure pump.
If the water supply is not clean, the Kärcher
water filter must be used (special accesso-
ry - order No. 4.730-059).
Recommended Cleaning Method
Start up
1
Spray a small dose of the detergent on
the dry surface, and allow it to react
(make sure the detergent does not dry
up).
Î Screw high pressure hose on to high
pressure outlet on appliance.
Î Push the appropriate spray lance on to
6 English
2
Wash off the loosened dirt using the
high-pressure jet.
Maintenance and care
ƽ Risk of electric shock
Detergents
Always switch off the appliance and pull out
the mains plug before care and mainte-
nance work.
To ensure a trouble-free operation of the appli-
ance and to match the individualcleaning task,
we recommend our Kärcher detergent and
maintenance agents. Please ask for our ad-
vice, or request information on the products.
Cleaning
Prior to longer periods of storage, e.g. in
the winter:
Interrupting operation
Î Remove filter from suction hose for de-
tergent and clean with running water.
Î Pull out filter in water connection using
flat-nose pliers and clean with running
water.
Î Release the lever on the trigger gun.
Î During breaks, use the safety catch to
secure the trigger gun lever.
Î During longer breaks (more than 5 min-
utes), also turn the appliance off using
the ON/OFF switch.
Maintenance
The appliance is maintenance-free.
Finish operation
Frost protection
Î If detergent has been added:
Fill detergent tank with clear water, switch
the appliance on for approximately one
minute once the spray lance has been re-
moved and rinse until water runs clear.
Î Release the lever on the handgun.
Î Switch the appliance switch to "0/OFF“.
Î Turn off tap.
ṇ Risk of frost
Protect the appliance and accessories
against frost.
The appliance and its accessories can get
destroyed through frost if there are any wa-
ter residues in them. To avoid damage to
them:
Î Press the lever on the handgun to re-
lease any remaining pressure in the
system.
Î Disconnect the appliance from the wa-
ter supply.
Î Detach spray lance from the handgun.
Î Briefly switch the appliance on ("I/ON“),
press the handgun lever until no further
water is discharged (approx. 1 min).
Î Switch the appliance switch to "0/OFF“.
Î Use the safety catch to secure the
handgun lever.
Î Store the appliance and the entire ac-
cessories in a frost-safe room.
Spare Parts
Only use original Kärcher spare parts. You
will find a list of spare parts at the end of this
document.
Special accessories
Special accessories expand the possibili-
ties of using your appliance. Please contact
your Kärcher dealer for further information.
Î Pull out the mains plug.
Î Store the power cord, the high pressure
hose and the accessories on the appli-
ance.
ṇ Caution
Please remove the detergent from the de-
tergent tank if the application is transported
in a reclined position.
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Î Clean the filter of the detergent suction
Troubleshooting
hose.
You can rectify minor faults yourself with
the help of the following overview.
If in doubt, please consult the authorized
customer service.
Î Check the Detergent suction hose for
kinks.
Specifications
ƽ Risk of electric shock
Always switch off the appliance and pull out
the mains plug before care and mainte-
nance work.
Power connection
Voltage
(1~50 Hz) 230-240 V
1,4 kW
13 A
Connected load
ƽ Warning
Mains fuse (slow-blow)
Protective class
Repair works may only be performed by the
authorized customer service.
I
Protection class
IPX5
Appliance does not start
Î Check whether the voltage indicated on
the type plate corresponds to the volt-
age of the socket.
Water connection
Max. feed temperature
Min. feed volume
40 °C
8 l/min
Î Check the power cable for damage.
Max. feed pressure
Performance data
Working pressure
1,2 MPa
Pressure does not build up in the appli-
ance
8 MPa
10 MPa
5,5 l/min
0,4 l/min
12 N
Î Check the setting at the spray lance.
Î Evacuate air from the appliance: Switch
on the appliance when the high pres-
sure hose is not connected and allow it
to run until the water which discharges
from the high pressure outlet is free of
bubbles. Then connect the high pres-
sure hose again.
Max. permissible pressure
Water flow rate
Detergent flow rate
Recoil force of trigger gun
2
Hand-arm vibration
(ISO 5349)
0,8 m/s
Î Clean the filter in the water supply con-
nection: This can be easily removed us-
ing flat-nose pliers.
Î Check all supply lines to the High pres-
sure pump for leaks or blockages.
Sound pressure level
LpA (EN60704-1)
72 dB(A)
86 dB(A)
Sound power level
LWA (2000/14/EG)
Dimensions
Length
Strong pressure fluctuations
284 mm
294 mm
566 mm
8,1 kg
Î Clean the high-pressure nozzle: Re-
move dirt and debris from the nozzle
bore with a needle and rinse through
with water towards the front.
Width
Height
Weight
Î Check the volume of incoming water.
Subject to technical modifications!
High pressure pump leaking
Î Slight leakage from the high pressure
pump is normal. If the leakage increas-
es contact the authorized customer
service.
No detergent infeed
Î Select the low-pressure setting for the
spray lance.
8 English
Help-Line
CE declaration
Karcher (UK) Limited operate a help-line
allowing customers to discuss any
problems experienced with our products.
The help-line operates during normal
business hours, if you have difficulty getting
through, please understand that there are
peak periods during the day when our
consultants are unable to take all calls
coming in. In these circumstances we
would ask that you try to contact us again
later in the day.
We hereby declare that the machine de-
scribed 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.
Product:
Type:
High-pressure cleaner
1.400-xxx
Relevant EU Directives
98/37/EC
2006/95/EC
89/336/EEC (+91/263/EEC, 92/31/EEC,
93/68/EEC)
2000/14/EC
Applied harmonized standards
EN 60335–1
EN 60335–2–79
EN 55014–1:2000 +A1:2001 +A2:2002
EN 55014–2:1997 +A1:2001
EN 61000–3–2:2000 +A2:2005
EN 61000–3–3:1995 +A1:2001
Applied conformity evaluation method
Appendix V
The help-line number is 0906 6800632
(calls to this number are charged at 25p
per minute) from 8.30 am to 5.00 pm
Monday - Friday.
It helps us if you have the model number
and data plate details to hand before
making your call as there are very many
different models of Karcher Pressure
Washers in use.
Alternatively you may write or e-mail to the
address below:
Sound power level dB(A)
Measured:
Guaranteed: 86 dB(A)
84 dB(A)
Karcher (UK) Limited
Karcher House
Beaumont Road
Banbury
Oxon, OX16 1TB
FAX: 01295 752030
E-mail:
The undersigned act on behalf and under
the power of attorney of the company man-
agement.
Alfred Kärcher GmbH Co. KG
Alfred Kärcher-Str. 28 - 40
D - 71364 Winnenden
Phone: +49 7195 14-0
Fax: +49 7195 14-2212
English 9
Assembly
10 English
Spare Parts
English 11
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