Karcher K 6.91 M User Manual

K 6.91 M

Operating
Instructions

Before first use of the
unit read these operating
instructions and act in
accordance with them.

5.962-565 (01/08)

Dear Customer,

Please read and comply with

these instructions prior to the in­itial operation of your appliance. Retain
these operating instructions for future refer­ence 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 dam­ages please contact your dealer.

Contents

Description of the Appliance 2

General information 4

Safety instructions 5

Operation 7

Maintenance and care 9

Troubleshooting 10

Technical specifications 11

Helpline 11

CE declaration 12

Assembly 13

Spare Parts 15

Illustrations on Page 3

1 Appliance switch "0/OFF“/ „I/ON“
2 Mains cable with mains plug
3 High pressure connection
4 High pressure hose
5 Trigger gun
6 Key to detach the high-pressure hose

from the trigger gun
7 Lock trigger gun
8 Water connection
9 Fine filter in the water connection
10 Coupling element for water connection
11 Detergent suction hose (with filter)
12 Dosage regulator for detergent
13 Detergent Tank
14 Storage for trigger gun
15 Storage for spray lance
16 Storage for high-pressure hose
17 Transport handle
18 Bearing wheel
19 Spray lance with pressure regulation

(Vario Power)
20 Spray lance with dirt blaster
21 Washing brush

Special accessories

Special accessories expand the possibili­ties of using your appliance. Please contact
your Kärcher dealer for further information.

2 English

Assembly see page 13

English 3

General information

Hazard levels

 Danger

Immediate danger that can cause severe
injury or even death.

몇 Warning

Possible hazardous situation that could
lead to severe injury or even death.

Caution

Possible hazardous situation that could
lead to mild injury to persons or damage to
property.

Proper Use

This high-pressure cleaner is designed for
domestic use only:
– to clean machines, vehicles, buildings,

tools, facades, terraces, garden equip­ment 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.

Warranty

The warranty terms published by our com­petent 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 fabrication. In the event of a warran­ty claim please contact your dealer or the
nearest authorized Customer Service cent­er. Please submit the proof of purchase.
(See address on the reverse)

Environmental protection

The packaging material can be recy-

cled. Please do not place the packag­ing into the ordinary refuse for disposal, but
arrange for the proper recycling.

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 collection systems

4 English

Safety instructions

 Danger

 Never touch the mains plug and the

socket with wet hands.

 The appliance must not be used if the

power cord or important parts of the ap­pliance, e.g. high-pressure hoses, trig­ger gun or safety devices are damaged.

 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 au­thorized customer service or a skilled
electrician.

 Check the high-pressure hose for dam-

age before every use. Please arrange
for the immediate exchange of a dam­aged high-pressure hose.

 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 corre­sponding safety provisions must be
observed.

 High-pressure jets can be

dangerous if improperly
used. The jet must not be
directed at persons, ani­mals, live electrical equipment or at the
appliance itself.

 The high-pressure jet must not be di-

rected 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. Dam­aged vehicle tyres/tyre valves are high­ly dangerous. Ensure that a distance of
at least 30 cm is observed when clean­ing with the jet!

 Never draw in fluids containing solvents

or undiluted acids and solvents! This in­cludes petrol, paint thinner and heating

oil. The spray mist thus generated is
highly inflammable, explosive and poi­sonous. Do not use acetone, undiluted
acids and solvents as they are aggres­sive towards the materials from which
the appliance is made.

몇 Warning

 The mains plug and the coupling of an

extension cable must be watertight and
must never lay in the water.

 Unsuitable extension cables can be

hazardous. Only use extension cables
outdoors which have been approved for
this purpose and labelled with a suffi­cient cable cross-section:
1 - 10 m: 1.5 mm

 Always fully unroll electrical cables from

the cable drum.

 High-pressure hoses, fixtures and cou-

plings are important for the safety of the
appliance. Only use high-pressure hos­es, fixtures and couplings recommend­ed by the manufacturer.

 This device is not intended for use by

persons (including children) with re­duced physical, sensory or mental abil­ities or lacking experience and/or
knowledge, unless they are supervised
by a person responsible for their safety
or are instructed by these persons on
the use of the device. Children should
be supervised, to ensure that they do
not play with the device.

 The operator must use the appliance

correctly. When working with the appli­ance, he must consider the local condi­tions and pay due care and attention to
other persons, in particular children,
who are nearby.

 Do not use the appliance when there

are other persons around unless they
are also wearing safety equipment.

 Wear protective clothing and safety

goggles to protect against splash back
containing water or dirt.

2

; 10 - 30 m: 2.5 mm

2

English 5

Caution

 Observe a distance of at least 30 cm

when using the jet to clean painted sur­faces to avoid damaging paintwork.

 Never leave the appliance unattended

when it is in operation.

 Make sure that the power cable or ex-

tension cables are not damaged by run­ning over, pinching, dragging or similar.
Protect the power cable from heat, oil,
and sharp edges.

 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.

 The maximum tolerable mains imped-

ance at the electrical contact point (see
Technical Data) must not be exceeded.

 For safety reasons, we recommend that

you operate the appliance only via a
earth-leakage circuit breaker (max.
30 mA).

 Cleaning operations which produce oily

waste water, e.g. engine washes, un­derbody washes, may only be carried
out using washing stations equipped
with an oil separator.

 This appliance was designed to be

used with detergents which are sup­plied or recommended by the manufac­turer. The use of other detergents or
chemicals may compromise the safety
of the appliance.

Safety Devices

Caution

Safety devices protect the user and must
not be modified or bypassed.

Power switch

The appliance switch prevents unintention­al operation of the appliance.

Lock trigger gun

This lock locks the lever of the trigger gun
and prevents the inadvertent start of the ap­pliance.

High pressure hose

The high pressure hose is specially con­structed with reinforced walls to handle wa­ter pressure up to 16 MPa (2400 psi) - it can
be easily damaged and should be stored
carefully.

 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.

6 English

Operation

Before Startup

Mount loose parts delivered with appliance
prior to start-up.

Assemble appliance as shown on
page 13 and 14.

Illustration
Î Insert the transport handle and screw

in.
Î Insert holder for trigger gun.
Illustration
Î Connect the suction hose for detergent

to the dosage regulator.
Illustration
Î Lock the dosage regulator for detergent

into the cover.
Illustration
Î Insert the cover and screw in.
Illustration
Î Pull the suction hose for detergent

through the cover of the detergent tank

until the filter contacts teh bottom of the

tank.
Illustration

Î Close the detergent tank with the lid.
Î Lock the detergent tank in place on the

appliance.
Illustration
Î Attach the accessories holder.
Illustration
Î Push the high pressure hose into the

trigger gun until it locks audibly.

Note: Make sure the connection nipple

is aligned correctly.
Î Check the secure connection by pulling

on the high-pressure hose.

Water supply

According to the applicable regula­tions, the appliance must never be
used on the drinking water supply
without a system separator. Use a
suitable system separator manufactured by
Kärcher; or, as an alternative, a system
separator as per EN 12729 Type BA.

Note: Impurities in the water can damage
the high-pressure pump and accessories.
For protection, the use of the Kärcher water
filter (optional accessory, order no. 4.730-

059) is recommended.

Water supply from mains

Observe regulations of water supplier.
For connection values, see type plate/tech­nical data.
Î Use a fibre-reinforced water hose (not

included) with a standard coupling.
(Minimum diameter 1/2 inch (13 mm),
minimum length 7.5 m).

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 wa­ter supply.

Drawing in water from open reservoirs

This high-pressure cleaner is suited to work
with the Kärcher suction hose with backflow
valve (Optional accessory, order no. 4.440-

238) to draw in surface water, e.g. from wa­ter butts or ponds (see specifications for
max. suction height).
Î Fill the Kärcher suction hose with back-

flow valve with water, screw to water
supply and hang into he water butt.

Î Separate the high pressure hose from

the high pressure connection point of
the appliance.

Î Switch the appliance on "I/ON" and op-

erate until the water exits the high-pres­sure connection without bubbles.

Î Turn off the appliance "0/OFF".

English 7

Start up

Caution

Never operate the high-pressure cleaner
when the tap is turned off as dry running will
damage the high-pressure pump.

Î Connect the high pressure hose to the

high pressure connection of the appli-

ance.
Î Push the spray lance into the trigger

gun and fasten it by turning it through

90°.

Î Completely open the water tap.
Î Insert the mains plug into the socket.
Î Turn on the appliance “I/ON”.

Operation

몇 Danger

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 holding the trigger gun and spray lance
firmly.

Illustration (see page 14)

Î Unlock the lever on the trigger gun.
Î Pull on the lever of the trigger gun; the

device will switch on.
Note: Release the lever of the trigger gun;
the device will switch off again. High pres­sure remains in the system.

Spray lance with pressure regulation

Carrying out the most common cleaning
tasks. The work pressure can be stageless­ly regulated between "Min" and "Max".

Î Release the lever on the trigger gun.
Î Turn the spray lance to the desired po-

sition.

Spray lance with dirt blaster

For particularly dirty items or areas.
Not suitable for use with detergents.

Washing brush

Suitable for use with detergents.

Working with detergent

We recommend the Kärcher cleaning and
care program that will match the respective
cleaning requirements. Please seek con­sultation or request information on the sub­ject.
Î Use spray lance with pressure regula-

tion (Vario Power).

Î Turn the spray lance to "Mix" position.
Î Fill the detergent solution in the deter-

gent tank (observe dosage instructions
on the packaging of the detergent).

Î Adjust the suction volume of the deter-

gent solution by means of the dosage
regulator for detergents.
Turning the regulator to the left: Addi­tional dosage from the left detergent
tank.
Turning regulator to the right: Additional
dosage from the right detergent tank.

Recommended cleaning method

Î Spray the detergent sparingly on the

dry surface and allow it to react, but not
to dry.

Î Spray off loosened dirt with the high-

pressure ray.

Interrupting operation

Î Release the lever on the trigger gun.
Illustration (see page 14)

Î Lock the lever on the trigger gun.
Î During longer breaks (more than 5 min-

utes), also turn the appliance off using
the "0/OFF" switch.

Î Insert the trigger gun in its holder.

8 English

Finish operation

Maintenance and care

Caution

Only separate the high-pressure hose from
the hand spray gun or the appliance while
there is no pressure in the system.

Î After operation with detergent: Fill the

detergent tank with clear water, turn the

spray pipe with pressure regulator to

the position "Mix", switch the appliance

on for about 1 minute and rinse with

clear water.

Î Release the lever on the trigger gun.
Î Turn off the appliance "0/OFF".
Î Turn off tap.
Î Detach the appliance from the water

supply.
Î Press the lever on the trigger gun to re-

lease any remaining pressure in the

system.

Î Lock the lever on the trigger gun.
Î Pull out the mains plug.
Î Roll up the power cord and loop it e.g.

round the handle.
Illustration (see page 14)

Î Insert the trigger gun in its holder.
Î Suspend the high-pressure hose into its

holder.
Illustration (see page 14)
Î Stow away the accessories in the ac-

cessory holder.

Transport

Caution

Empty the detergent tank before transport­ing in horizontal position.

 Danger

Turn off the appliance and remove the
mains plug prior to any care and mainte­nance work.

Maintenance

The appliance is maintenance-free.

Storage

Prior to longer periods of storage, e.g. in
the winter:
Î Completely drain all water from the ap-

pliance: Switch the appliance on with
detached high-pressure hose and de­tached water supply (max. 1 minute)
and wait, until no more water exits at the
high-pressure connection. Turn off the
appliance.

Î Remove filter from suction hose for de-

tergent and clean under running water.

Î Pull out the fine filter in water connec-

tion using flat-nose pliers and clean with
running water.

Frost protection

Caution

Protect the appliance and its accessories
against frost.

The appliance and its accessories can get
destroyed through frost if there are any wa­ter residues in them. To avoid damage to
them:
Î Store the appliance and the entire ac-

cessories in a frost-safe room.

Spare parts

Use only original Kärcher spare parts. You
will find a list of spare parts at the end of
these operating instructions.

English 9

Troubleshooting

You can rectify minor faults yourself with
the help of the following overview.
If in doubt, please consult the authorized
customer service.

 Danger

Turn off the appliance and remove the
mains plug prior to any care and mainte­nance work.
Repair works may only be performed by the
authorized customer service.

Appliance is not running

Î Check whether the voltage indicated on

the type plate corresponds to the volt-

age of the mains supply.
Î Check the mains connection cable for

damages.

Pressure does not build up in the
appliance

Î Check setting at the spray lance.
Î Appliance ventilation: Switch the appli-

ance on with the high-pressure hose

detached and operate until the water

flows through the high-pressure con-

nection without bubbles. Switch off ap-

pliance and reconnect high-pressure

hose.

Î Check the water supply.
Î Pull out the fine filter in water connec-

tion using flat-nose pliers and clean with

running water.

Appliance is leaking

Î Slight leakage from the appliance pump

is normal. If the leakage increases con­tact the authorized customer service.

No detergent infeed

Î Use spray lance with pressure regula-

tion (Vario Power).
Turn the spray lance to "Mix" position.

Î Detach spray lance from the trigger

gun. Work only with the trigger gun.

Î Clean the detergent suction hose filter.
Î Check the detergent suction hose for

kinks.

Î Check the settings at the detergent dos-

aging regulator.

Appliance does not start, motor hums

Cause: Voltage reduction due to weak
mains supply or when using an extension
cable.

Î When switching on, first pull the lever of

the trigger gun and then switch the ap-

pliance switch to "I/ON".

Strong pressure fluctuations

Î Clean high-pressure nozzle: Remove

dirt and debris from the nozzle bore, us-

ing a needle and rinse through with wa-

ter from the front.
Î Check water flow quantity.

10 English

Helpline Technical specifications

Kärcher UK Limited operate a helpline al­lowing customers to discuss any problems
experienced with our products.
The helpline operates during normal busi­ness hours and may be busy at peak peri­ods.If you have difficulty getting through we
would ask that you try to contact us again
later in the day.

The helpline number is 01295 752200,
open from 8.30am to 5.00pm
Monday to Friday.

It helps us if you have the model number
and data plate details to hand before mak­ing your call so that we can assist you with
your query more effectively.

Alternatively you may write to us at the
address below:

Kärcher UK Ltd
Kärcher House
Beaumont Road
Banbury
Oxon, OX16 1TB

or E-mail us:
[e-mail]

Power connection

Voltage 230-240

1~50VHz
Connected load 2,5 kW
Mains fuse (slow-blow) 13 A
Maximum allowed net im-

pedance

0,388

+j0,243

Ohm

Protective class I
Protection class IP X5

Water connection

Max. feed temperature 60 °C
Min. feed volume 10 I/min
Max. feed pressure 0,6 MPa
Max. Suction height 0,5 m

Performance data

Working pressure 13 MPa
Max. permissible pressure 15 MPa
Water flow rate 8,8 I/min
Detergent flow rate 0,2 I/min
Recoil force of trigger gun 20 N
Hand-arm vibration

1,3 m/s

(ISO 5349)
Sound pressure level

73 dB(A)

LpA (EN60704-1)
Sound power level

87 dB(A)

LWA (2000/14/EG)

Dimensions

Length 349 mm
Width 346 mm
Height 869 mm
Weight 16,8 kg

2

Subject to technical modifications!

English 11

CE declaration

CEO

Head of Approbation

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.

Product: High-pressure cleaner
Type: 1.397-xxx

Relevant EU Directives

98/37/EC
2006/95/EC
2004/108/EC
2000/14/EC

Applied harmonized standards

EN 55014–1: 2006
EN 55014–2: 1997 + A1: 2001
EN 60335–1
EN 60335–2–79
EN 61000–3–2: 2000 + A2: 2005
EN 61000–3–11: 2000

Applied conformity evaluation method

Appendix V

Sound power level dB(A)

Measured: 86
Guaranteed: 87

The undersigned act on behalf and under
the power of attorney of the company man­agement.

Alfred Kärcher GmbH Co. KG
Alfred Kärcher-Str. 28 - 40
D - 71364 Winnenden
Phone: [phone]
Fax: [phone]

12 English

Assembly

English 13

Assembly

14 English

Spare Parts

English 15