Kärcher HDS 945 User manual

HDS 945
HDS 1000
HDS 1055
www.karcher.com 5.956-780 A 2005729 (06/03)

2
IMPORTANT SAFETY INSTRUCTIONS
- SAVE THESE INSTRUCTIONS -
WARNING
When using this product basic precautions should always be
followed, including the following:
•Read all the instructions before using the product.
•To reduce the risk of injury, close supervision is necessary when a product
is used near children.
•Know how to stop the product and bleed pressure quickly. Be thoroughly
familiar with the controls.
•Stay alert – watch what you are doing.
•Do not operate the product when fatigued or under the influence of alcohol
or drugs.
•Keep operating area clear of all persons.
•Do not overreach or stand on unstable support. Keep good footing and
balance at all times.
•Follow the maintenance instructions specified in the manual.

3
IMPORTANT SAFETY INSTRUCTIONS
GROUNDING INSTRUCTIONS
This product must be grounded. If it should
malfunctionorbreakdown,groundingprovidesa
path of least resistance for electric current to
reduce the risk of electric shock. This product is
equipped with a cord having an equipment-
grounding conductor and a grounding plug. The
plug must be plugged into an appropriate outlet
that is properly installed and grounded in
accordancewithalllocalcodesandordinances.
DANGER
- Improper connection of the equipment-
groundingconductor canresult ina riskof
electrocution. Check with a qualified
electrician or service personnel if you are
indoubtastowhethertheoutletisproperly
grounded.Donotmodifytheplugprovided
with the product
- if it will not fit the outlet, have a proper
outlet installed by a qualified electrician.
Do not use any type of adaptor with this
product.
EXTENSION CORDS
Use only 3-wire extension cords that have
3-prong grounding-type plugs and 3-pole cord
connectorsthataccepttheplugfromtheproduct.
Use only extension cords that are intended for
outdooruse.Theseextensioncordsareidentified
by a marking “Acceptable for use with outdoor
appliances; store indoors while not in use.” Use
only extension cords having an electrical rating
notlessthantheratingoftheproduct.Donotuse
damaged extension cords. Examine extension
cord before using and replace if damaged. Do
notabuseextensioncordanddonotyankonany
cord to disconnect. Keep cord away from heat
and sharp edges. Always disconnect the
extension cord from the receptacle before
disconnecting the product from the extension
cord.
Important: Whenusinganextensioncordalways
unwind cord completely.
WARNING
To reduce the risk of electrocution, keep all
connections dry and off the ground. Do not
touch plug with wet hands.
WARNING
-Risk of Injection or Injury
-DoNotDirectDischargeStreamAtPersons.
HighPressurejetscanbedangerousifsubjectto
misuse.Thejetmustnotbedirectedatpersons,
animals or machine itself. This machine has
been designed for use with cleaning chemicals
supplied or recommended by the manufacturer.
The use of other cleaning chemicals may affect
the operation of the machine and void the
warranty.

4
15 Elec. connecting cables
16 Water connection with strainer
17 High-pressure connection
18 Hand-held spray gun with
high-pressure hose
19 Spray lance
20 High-pressure nozzle
21 Appliance switch
22 Thermostat
23 Fuel indicator light
24 Engine indicator light
25 Liquid softener indicator light
26 Manometer
27 Detergent metering valve
1 Filling orifice for fuel
2 Handle
3 Instrument panel
4 Button for overcurrent protective relay
5 Compartment for accessories
6 Short-time operation instructions
7 Cover flap for compartment
8 Appliance hood
9 Cover flap for filling orifices
10 Filling orifice for liquid softener
11 Filling orifice for detergent
12 Recessed grips in the bottom pan
13 Pressure and volume control
14 Guide roller with parking brake
1. Diagram of the appliance
2. Controls

5
3.Technical Data
HDS
945
HDS
1000
HDS
1055
Power connection
Voltage 240 240 240 V
Type of current 1~ 60 1~ 60 1~ 60 Hz
Connected load 8 9.5 9.5 hp
ains fuse (slow) 30 30 30 A
Water connection
Supply temperature (max.) 86 86 86 °F
Supply rate (min.) 5 6 5 gpm
Suction height fom open tank at a water temp. of 86 °F 0.5 0.5 0.5 m
Performance data
Operating pressure 4602000 460-2250 4603000 psi
Flow rate 2  4 2.4  4.5 2  3.5 gpm
Operating temperature (max.) 285/175 285/175 285/175 °F
Detergent intake 0  0.25 0  0.25 0  0.25 gpm
Burner capacity 85 92 72 hp
Recoil force of spray gun at operating pressure (max.) 30 32 32 N
Sound pressure level (EN 60704-1) 79 79 79 dB(A)
Dimensions
Length 1285 1285 1285 mm
Width 690 690 690 mm
Height 835 835 835 mm
Weight without accessories 120 120 120 kg
Fuel tank (EL fuel oil or diesel) 25 25 25 l
Detergent tank 20 20 20 l
Pump oil 15W40 (Order-No. 6.288-050) 0.6 0.6 0.6 l

6
4. Start-up
4.1 Environmental protection
·Pleasedisposeofpackagingenvironmentally
responsibly.
The packaging materials are recyclable.
Please do not throw the packaging in with
household rubbish but take it to a recycling
centre.
·Please dispose of scrapped units
environmentally-responsibly.
Scrappedunitsconsistofvaluablerecyclable
materials that should be taken to a recycling
centre. Batteries, oil and similar products
must not be allowed to contaminate the
environment. Therefore, please dispose of
scrapped units via appropriate disposal
systems.
·Please ensure engine oil, fuel oil, diesel and
petroltocontaminatetheenvironment.Please
protect the ground and dispose of used oil
ecologically.
4.2 Unpacking the appliance
·Pleasecontactyourdealerimmediatelyif,on
unpacking the appliance, you discover
damage has been caused during
transportation.
4.3 Attaching the accessories
·Attach the two handles to the appliance.
·Connect the spray lance to the gun.
·Attach the high-pressure nozzle to the spray
lance.
·Tighten all union nuts hand-tight.
4.5 Pouring in the fuel
·The appliance is delivered with an empty fuel
tank.
·Fill the fuel tank with diesel or a light fuel oil
before the initial start-up.
When the fuel tank is empty, the fuel pump
will operate dry and will be damaged.
4.6 Pouring in the liquid softener
·Theliquidsoftenerpreventstheheatingelement
from becoming calcified when operating with
hardsupplywater.Theliquidsoftenerisaddedin
drops to the supply water in the water tank. The
meteringissettoanaveragevalueatthefactoy.
This setting may be adjusted to local conditions
by customer service.
·Pour the RM 110 liquid softener (included in
standard delivery) into the filling orifice of the
white tank.
·You can also work without liquid softener when
operating with soft water, e.g. rain water. In this
caseyoushouldremovethesmall(!)coverfrom
the white tank and place the supplied spring
underneath on the cover support. Then replace
thecover.Thispreventstheindicatorlightonthe
instrument panel from continually flashing. This
spring must be removed when operating with
supply water.
4.4 Checking the oil level of the
high-pressure pump
·Before the initial start-up, open the appliance
hoodandcutthetipofftheoiltankcover(venting
the oil housing).
·Checktheoillevelinthe oiltank.Do notstartthe
appliance if the oil level has dropped below
“MIN”.Topuptheoilasrequired(seetech.data,
chap. 3).

7
4.7 Connecting the water
·See technical data, chap. 3 for connected
loads.
·Attachthesupplyhosetotheapplianceandto
thewaterline.Thesupplyhoseisnotincluded
in standard delivery.
·If you draw in the water from an open tank,
you should
– disconnectthewatersupplyfromthepump
head
– unscrew the upper supply hose from the
watertankandconnecttothepumphead.
– use a water supply hose which has a
minimum diameter of 3/4" and a suction
filter.
·Until the pump has drawn in the water, you
should:
– rotate the pressure and volume control to
“MAX”,
– close the detergent metering valve.
4.8 Connecting the power
·See technical data, chap. 3 for connected
loads
·The voltage stated on the rating plate must
correspondtothevoltageofthepowersource.
·The electric plug must only be fitted by an
authorized customer service/electrical
engineer.Thedirectionofrotationoftheengine
must also be observed. If the direction of
rotation is correct, there will be a powerful air
flow from the exhaust gas opening of the
burner.
·First,positiontheapplianceswitchto“STOP”
and then put the electric plug into the socket.
·If you are using an extension lead, it should
alwaysbecompletelyunwoundfromthecable
drum and have an adequate cross-section
(25 ft = 12 AWG, 50 ft = 10 AWG).
4. Start-up
4.9 Intended use
·Use the appliance to clean machines, vehicles,
buildings, tools, etc.
·Clean facades, patios, garden implements, etc.
with the high-pressure spray only, i.e. without
detergent. We recommend the dirt blaster, a
special accessory, for stubborn dirt.
·If the machine is used at petrol stations or in
other hazardous areas, the appropriate safety
regulations must be observed.
·Please ensure waste water containing mineral
oildoesnotcontaminatesoil,lakesandriversor
the sewerage system. Therefore, please wash
engines and underbodies only in appropriate
washing installations provided with oil traps.

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5.1 Venting the appliance
·Open the water intake.
·Allow the appliance to run without the high-
pressurehoseuntilthewateremergeswithout
bubbles.
·Then connect the high-pressure hose.
·If the spray lance and high-pressure nozzle
have already been fitted to the high-pressure
hose, you can vent the appliance as follows:
With the hand-held spray gun open, switch
the appliance on and off several times at
intervalsof10secondsuntilthewateremerges
fromthehigh-pressurehosewithoutbubbles.
5.2 High-pressure nozzle
·The effectiveness of the high-pressure jet
dependstoagreatextentonthesprayangle.
A 25° fan jet nozzle is usually employed
(included in standard delivery).
·Other nozzles are available as accessories.
0° full jet nozzle
for stubborn dirt.
40° fan jet nozzle
for sensitive surfaces.
Dirt blaster
for thick layers of dirt.
Variable angle nozzle
with adjustable spray angle
·At first always direct the high-pressure jet
from a greater distance at the object which is
to be cleaned, thereby preventing damage
from excessive pressure.
5. Operation
5.3 Adjusting the operating pressure
and flow rate
·You can adjust the operating pressure and
flow rate steplessly with the pressure and
volume control on the pump head:
Screwing in the adjusting screw - operating
pressure and flow rate higher
Unscrewing the adjusting screw - operating
pressure and flow rate lower
5.4 Operating with cold water
·Set the thermostat to 30°C.
·Switch the appliance switch to “ ”.
5.5 Working temperature
·The working temperature can be adjusted to
any temperature required.
86°–122°F For light contamination
max. 140°F For contamination containing
albumen in the food-stuff
industry
140-175°F Vehiclebodyworkandmachine
cleaning
210-230°F Removing preservatives and
grease-based dirt
app.285°F Thawing aggregate and some
types of facade cleaning

9
5. Operation
5.6 Operating with detergent
·Fill the detergent tank.
·Setthedetergentmeteringvalvetothedesired
concentration.
·In order to protect the environment, we
recommend that detergent is used sparingly.
Comply with the metering recommendation
on the detergent container label.
·We offer an individual range of detergents
and preservatives and therefore guarantee
trouble-freeoperation.Pleaseaskforadvice,
or request our catalogue or detergent
information leaflets.
·Only those detergents may be used which
havebeenauthorizedbythemanufacturerof
the appliance.
·Unsuitable detergents can damage the
applianceandtheobjectwhichistobecleaned.
·We recommend the following cleaning
method:
Step 1: Loosening the dirt
Spray on detergent sparingly and allow to
react for 1–5 minutes.
Step 2: Removing the dirt
Spray off the dissolved dirt with the high-
pressure jet.
·When you have finished working with
detergent, you should set the detergent
metering valve to “0” and rinse the appliance
thoroughly with the gun open for approx.
1 minute.
5.7 Interrupting operation
·If you release the trigger of the hand-held
spray gun, the appliance switches off. If the
triggerispulledagain,theapplianceswitches
on again.
5.8 Switching off the appliance
Warning!
·Danger of scalding with hot water.
After operating it with hot water or steam the
unitmustbecooledforatleasttwominutesby
operating it with cold water and its open
handgun.
·Switch the appliance off and pull the electric
plug out of the socket.
·Close the water intake.
·Pull the gun trigger until the appliance is
depressurized.
·Securetheguntriggerwiththesafetycatchto
prevent the gun from accidentally opening.

10
6. Care and maintenance
Always disconnect the appliance from
the electric mains supply before carrying
out any maintenance work.
·You can arrange a regular safety inspection
with your dealer or take out a maintenance
contract. Please ask for advice.
·Diagrams can be found at the end of these
operating instructions.
6.1 Weekly
·Check the oil level (diagram 1).
If the oil is milky (water in the oil), contact
customer service immediately.
·Clean the strainer in the water connection.
6.2 Monthly or as required
·Clean the strainer in the low water safety
device (diagram 2).
·Cleanthefilteronthedetergentsuctionhose.
6.3 Annually, after 500 operating hours
or as required
·Changing the oil (diagram 1).
·Unscrew the oil drain plug and dispose of the
old oil via an authorized collecting point
(protection of the environment).
·When the oil has completely drained, screw
theoildrainplugbackinandslowlypourinoil
up to the “MAX” position on the oil tank (air
bubbles must escape).
·Seetechnicaldata,chapter3forquantityand
type of oil.
6.4 Decarbonizing the heating element
·Iftheheatingelementbecomessootedwithin
a short time, you should have the burner
setting checked by the authorized customer
service.Iftheburnersettingisincorrectlyset,
the fuel consumption will be increased,
polluting the environment unnecessarily.
6.5 Decalcifying the heating element
·If the appliance continually switches on and
off at max. operating pressure, or if the
pressure on the appliance manometer
increases to more than 10 bar without the
high-pressure hose at the maximum water
flow, internal deposits/calcification are the
probable cause.
·We recommend that you contact the
authorized customer serrvice to carry out
decalcification, as the metering of the liquid
softener should then be checked.
6.6 Cleaning the fuel tank
·Remove the tank from the appliance (first
unscrewthehandle,appliancehoodandcover
from the switch box).
·Dispose of the remaining fuel.
·Rinseoutthe tankthoroughly.Ifyou rinseout
thetankwithwater,allowit to dry completely.
·Replace the fuel filter (if required).

11
6. Care and maintenance
6.7 High-pressure hose
·The high-pressure must not be damaged
(danger of bursting). A damaged high-
pressurehosemustbereplacedimmediately.
Only use a Kärcher high-pressure hose
replacement.
6.8 Connecting cable
·The connecting cable must not be damaged
(danger of electric shock). A damaged
connecting cable must be replaced
immediately by the authorized customer
service/electrical engineer.
6.9 Protection from frost
·Frost will damage the appliance if it is not
drained completely of water. In winter the
appliance should be kept in a room which is
above freezing point. Otherwise, it is
recommended to drain the appliance or rinse
it thoroughly with anti-freeze.
·Draining the appliance
– Unscrew the water intake hose and high-
pressure hose from the appliance.
– Unscrew the supply line from the base of
theboilerandallowtheheatingelementto
drain.
– Allow the appliance to run for a max. of 1
minute until the pump and the lines have
drained.
·Anti-freeze
During extended down-time periods, it is
recommendedtopumpananti-freezethrough
theappliance.Thisalsoprotectstheappliance
to a certain degree from corrosion.
·Observe the following if the unit is connected
to a flue:
Dangerofdamagecausedbycoldairentering
through the flue. Disconnect unit from flue at
outside temperatures below 0°C.

12
7.Troubleshooting
7.3 The appliance does not come up to
pressure
·Rotatethepressureandvolumecontroltothe
maximum value.
·Fill the detergent tank or set the metering
valve to zero.
·Vent the appliance (see chap. 5).
·Clean the strainer in the water connection.
·Checkthewaterintakevolume(seetechnical
data, chap. 3).
·Check all the supply lines to the pump for
leaks and blockages.
7.4 Pump leaks
·3dropsperminutearepermissible.Youshould
contact customer service if the leakage is
more rapid.
7.5 The pump is knocking
·Check all the supply lines to the pump, also
thedetergentsystem,forleaksandblockages.
·Vent the appliance.
7.6 Detergent is not being drawn in
·Let the appliance run with opened metering
valve(max.setting)andwithouthigh-pressure
hose, until the detergent visibly emerges at
the appliance outlet.
·Clean the detergent suction hose and filter.
·Clean the metering valve for cleaning agent.
·Cleanthenon-returnvalveonthepumphead
and the connection for the detergent suction
hose.
·Checkallthedetergenthosesandconnections
for leaks.
Always disconnect the appliance from
the electric mains supply before carrying
out any repair work.
The electrical components must only be
checked by the authorized customer
service.
·Inthischapterweshallprovideinformationon
how you can rectify simple malfunctions
yourself. In all other cases or in the event of
electrical malfunctions, please contact the
authorized customer service.
·Diagrams can be found at the end of these
operating instructions.
7.1 Indicator lights
·Indicator light for fuel tank lights up
– Refill with fuel.
– Check that the fuel level sensor is
functioning correctly.
·Indicator light for engine-overheating lights
up
– Eliminate the cause of the overload.
– Allow the engine to cool down to room
temperature.
– Press the overcurrent relay button in the
accessories compartment.
·Indicator light for liquid softener lights up
– Refill with RM 110 liquid softener.
– Clean the electrodes in the liquid softener
tank.
7.2 The appliance will not start
·Check the mains voltage.
·Check whether the connecting cable is
damaged.
·Press the overcurrent relay button in the
accessories compartment.
·Contact customer service in the event of an
electrical malfunction.

13
7.7 The appliance switches on and off
continuously
·Clean the high-pressure nozzle.
·Checkwhethertheheatingelementiscalcified
(see chap. 6).
·Attach a larger nozzle when using high-
pressure extension hoses.
7.8 Burner does not ignite
·The ignition sparks can be observed through
the inspection window in the burner cover.
The appliance has a continuous ignition., i.e.
evenwhenoperatingwithcoldwateranignition
sparkmustbevisible.Clean,adjustorreplace
the ignition electrodes as required
– Fill the fuel tank.
– Check that the fuel pump and the fuel
solenoid valve function correctly.
– Clean the strainer in the low-water safety
device (diagram 2).
– Change the fuel filter.
– Checkthedirectionofrotationoftheengine.
If the direction of rotation is correct, there
willbea powerfulairflowfromtheexhaust
gas opening of the burner.
7.9 The temperature is not reached
when operating with hot water/steam
·Set the thermostat higher.
·Reduce the operating pressure and the flow
rate.
·Checkwhethertheheatingelementissooted
(see chap. 6).
7.Troubleshooting

14
8. General Information
8.1 Safety equipment
Pressure switch
When the operating pressure is exceeded, e.g.
when the gun is closed, when the nozzle is dirty or
when the heating element is calcified, the pressure
switchswitchesofftheapplianceandswitchesit on
again when the pressure falls below a specific
pressure. The pressure switch is set and lead-
sealed at the factory. Adjustments may only be
carried out by customer service.
Safety valve
Thesafetyvalveopenswhenthepressureswitchis
defective.Thesafetyvalveissetandlead-sealedat
thefactory.Adjustmentsmayonlybecarriedoutby
customer service.
Low-water safety device
The low-water safety device prevents the burner
from switching on when the water is low. A strainer
prevents the safety device from becoming fouled
and must be cleaned regularly.
8.2 Accessories
Incorrect,badlyfittingordefectiveaccessoriesimpair
the function of the appliance and are dangerous. It
is advisable to use Kärcher accessories which are
made-to-order. Your dealer will be glad to advise
8.3 Spare parts
PleasenotethattheuseofotherthanKärcherspare
parts can result in damage and even serious
accidents if these parts have not been correctly
manufactured, if they do not replace the Kärcher
sparepartexactlyoriftheyresultinunsafeoperation
of the appliance.
Kärcher spare parts guarantee that the appliance
can be operated safely and trouble-free.
Aselectionofthemostcommonspare-partnumbers
arelistedatthe end oftheseoperatinginstructions.
8.4 Guarantee
The terms of guarantee issued by our competent
distribution company are valid in every country. If
the appliance malfunctions in any way, we shall
rectify the fault free of charge within the period of
guarantee, provided the cause can be attributed to
faulty material or a manufacturing error.
The guarantee will only come into force when your
dealerhascompletelyfilledout,stampedandsigned
the enclosed reply card on completion of sale and
whenyouhavesentthereplycardtothedistribution
company in your country.
In the event of a claim on the guarantee, please
consult your dealer with accessories and receipt of
purchase or contact your nearest authorized
customer service centre.

28
2.880-296.0
HDS 1055
1.027-681.0 USA
6.414-028.0
5.321-377.0
5.321-379.0
5.321-150.0
5.731-039.0
5.321-150.0
6.303-025.0
6.303-025.0
2.880-296.0
5.305-204.0
6.362-496.0
6.303-025.0
6.303-025.0
5.401-210.0
7.306-049.0
5.321-403.0
5.337-021.0
5.363-290.0
5.063-447.0
6.313-014.0
5.321-378.0
6.313-014.0
5.030-834.0
6.388-225.0
5.063-448.0
5.042-463.06.388-559.0
5.392-017.0
7.312-004.0
5.363-300.0
4.775-026.0
4.760-101.0
4.760-101.0
4.760-101.0
6.390-010.0 04/97
6.390-010.0
6.647-904.0

29
2.880-296.0
HDS 1000
1.027-851.0 USA
6.414-028.0
5.321-377.0
5.321-379.0
5.321-150.0
5.731-039.0
5.321-150.0
6.303-025.0
6.303-025.0
2.880-296.0
5.305-204.0
6.362-496.0
6.303-025.0
6.303-025.0
5.401-210.0
7.306-049.0
5.321-403.0
5.337-021.0
5.363-290.0
5.063-447.0
6.313-014.0
5.321-378.0
6.313-014.0
5.030-834.0
6.388-225.0
5.063-448.0
5.042-463.06.388-559.0
5.392-017.0
7.312-004.0
5.363-300.0
4.775-026.0
4.760-101.0
4.760-101.0
4.760-101.0
6.390-010.0 09/98
6.390-010.0
6.647-904.0

30