Kärcher HDS3.5/20 User manual

9.801-509.0 - C11/02/17
OPERATOR’S MANUAL
To locate your local Kärcher Commercial Pressure Washer Dealer nearest you,
visit www.karchercommercial.com
■ HDS3.5/20 ■ HDS4.0/22 ■ HDS3.9/30
■ HDS5.0/23 ■ HDS4.8/30 ■ HDS6.3/32
■ HDS8.0/32 ■ HDS9.5/30
L
I
S
T
E
D
®
98015080-1
GROUND
8
10
12
14
160
2
4
6
TACH/HOUR
TACH/HOUR
1.Placeallswitchesinthe“OFF”position.
2.Connectpowersupplytoproperlygroundedoutlet.Test
theGFCI(ifequipped)usingtheresetandtestprocedures
providedontheGFCIdevice.TheGFCImustberesetand
testedwitheveryuse.
3.Securehighpressurehose,shut-offgunandwandtoout-
let
4.Connectwatersupplyhoseandturnonwater.
5.GraspwandPlacepumpswitchinthe“ON”position.
6.Turngasvalvecontrolknobto“ON”position.Pilotwilllight
automaticallywhenburnerswitchisturned“ON”.
7.Toheatwater,placeburnerswitchinthe“ON”positionand
adjustthermostattodesiredtemperature.
8.T
urnondetergentandproceedwithcleaning.
9.Aftercleaning:
A. Turnoffdetergentandrinse.
B.Placeburnerswitchinthe“OFF”position.
C.Allowmachinetodischargewaterfor2-3minutesto
coolcoil.
D.Placepumpswitchinthe“OFF”position.
E. Squeezetriggerguntorelievesystempressure.
F
.Turnoffwatersupply.
MODED’EMPLOI
LIRELEMANUELDEL’OPERATEURAVANTUTILISATIONUNE
MAUVAISEUTILISATIONPEUTCAUSERDESBLESSURESOU
DOMMAGESMATÉRIELS.
INSTRUCCIONESDEOPERACION
LEAELMANUALDEOPERACIÓNANTESDEUSARSE.LAOPERACIÓN
INADECUADAPUEDEOCASIONARLESIONESPERSONALESODAÑOS
ALASPROPIEDADES.
OPERATINGINSTRUCTIONS
READOPERATINGMANUALBEFOREOPERATINGMACHINE.
IMPROPEROPERATIONMAYRESULTINPERSONALINJURYOR
PROPERTYDAMAGE.
1.Coloquetodoslosinterruptoresenla posición“OFF”(APAGADO).
2.Conectelafuentedeenergíaauntomacorrienteconectadoatierrademodoad-
ecuado.PruebeelInterruptorAccionadoporCorrientedePérdidaaTierra(GFCI
porsussiglasenInglés)(sihubiera)mediantelosprocedimientosdereinicioy
pruebaincorporadosendichodispositivo.ElGFCIdebereiniciarseyponersea
pruebacadavezqueseuse.
3.Asegurelamangueradealtapresión,pistolayvarillaalacopladordeltomacor-
riente.
4.Conectelamangueradesuministrodeaguayabralallave.
5.Sujete lavarilla.Coloqueelinterruptordelabombaenlaposición
“ON”(ENCENDIDO).
6.Coloquelaperilladecontroldelaválvuladegasenlaposición“ON”(ENCENDI-
DO).Elpilotoseencenderáautomáticamentecuandoelquemadorseencienda.
7.Adecalentarelagua,coloqueelinterruptordelquemadorenlaposición“ON”
(ENCENDIDO)yajusteeltermostato a latemperaturadeseada.
8.Enciendaeldetergenteyprocedaconlalimpieza.
9.Despuésdelimpiar:
A.Apagueeldetergenteyenjuague.
B.Pongaelinterruptordelquemadorenlaposición“OFF” (APA GADO).
C.Deje quelamáquinadescargueaguapor 2 ó3 minutosparaquese
enfríeelserpentín.
D.Pongaelinterruptordelabombaenlaposición“OFF”(APAGADO).
E.Presionelapistolaparaaliviarlapresióndelsistema.
F
.Cierreelsuministrodeagua.
1.Metteztouslesinterrupteursenposition“OFF”.
2.Connectezleblocd’alimentationélectriqueàuneprisecorrectement
miseàlaterre.Testezledisjoncteurdefuitedeterre(lecaséchéant)
àl’aidedesprocéduresderéinitialisationetd’essaiindiquéessurle
disjoncteur.Ledisjoncteurdoitêtreréinitialiséettestéà chaque utili-
sation.
3.Fixezletuyauàhautepression,lepistoletetletuberigideauraccord
desortie.
4.Connectezletuyauàeauetfaitescoulerl’eau.
5.Tenezletuberigidefermement.Mettezl’interrupteurdelapompeen
position“ON”.
6.Tournezleboutondurobinetdegazenposition“ON”.Laveilleuse
s’allumeautomatiquementlorsquel’interrupteurdubrûleurestmissur
“ON”.
7.Pourchaufferl’eau,mettezl’interrupteurdubrûleursur“ON”etréglez
lethermostatàlatempératurevoulue.
8.Activezledétergentetcommencezlenettoyage.
9.Aprèslenettoyage:
A. Coupezledétergentetrincez.
B. Mettezl’interrupteurdubrûleursur“OFF”.
C.Laissezlamachineévacuerl’eaupendant2à3minutes,le
tempsquelabobinerefroidisse.
D.Mettezl’interrupteurdelapompesur“OFF”.
E.Actionnezlepistoletpourréduirelapressiondusystème.
F
.Coupezl’eau.
WARNING
PRECAUCION/AVERTISSEMENT
TOREDUCETHERISK
OFINJURYREAD
OPERATOR’SMANUAL
CAREFULLYBEFORE
USING.THISMACHINE
TOBEUSEDONLYBY
QUALIFIEDOPERATORS.
LEAELMANUALOPERACIONANTES
DEUSARSE.ESTEEQUIPODEBESER
USADOSOLAMENTEPOROPERA-
DORESCALIFICADOS.
LIRELEMANUELDEL’OPERATEUR
AVANTUTILISATION.CETAPPAREIL
DOITETREUTILISEPARDESOPERA-
TEURSQUALIFIES.
RISKOFINJURY—
PROTECTIVEEYE-
WEARANDCLOTHING
MUSTBEWORN.
whenoperatingthis
machine.
PROTEJASELOSOJOSCU-
ANDOseopereesteequipo.
DESLUNETTESDESECURITE
DOIVENTETREPORTEES
lorsquevousoperezcetappareil.
RISKOF
ASPHYXIATION.Use
onlyinwellventi-
latedarea.
RIESGODEASFIXIA.Useel
productoenunareadeventi-
laciónadecuada.
RISQUED’ASPHYXIE.Utiliser
dansunendroitbienaéré.
RISKOF
ELECTROCUTION.Connectonlyto
properlygroundedoutlet.Keepallcon-
nectionsdryandofftheground.Keep
sprayawayfromelectricalwiringand
components.Disconnectfromelectrical
supplybeforeservicing.
RIESGODEELECTROCUCIÓN—Co-
necteelenchufeenuncontactoadecuado.
Mantengatodaslasconneccionessecas
yarribadelsuelo.Norociecomponentes
eléctricos.Desconectela
corrienteeléctricaantesde
darservicio.
RISQUE
D’ELECTROCUTION
—Relieràdesprisesavec
miseàlaterreseulement.
Touslesdoiventêtre
maintenussecsetétresus-
pendus.Nojamaisprojeter
del’eausurlescom-
posantesetélectriques.
Couperl’alimentatation
électriqueavantdefaireune
réparation.
RISKOFINJECTIONORSE-
VEREINJURYTOPERSONS.
Keepclearofnozzle.
HOTDISCHARGEFLUID —Do
nottouchordirect discharge
streamatpersons.
RIESGODEPENETRACIÓNO
LESIONESSEVERASAPERSO-
NAS.Manténgasefueradelalcance
deboquilla.
DESCARGADEAGUACALIENTE
AALTAPRESION—Notoque
nidirijaeldelaguaaotras
personas.
RISQUEDEBLESSURES.Setenir
loindesbuses.
EAUCHAUDESOUSPRESSIONA
LASORTIE—Nepasdirigerle jet
d’eauversdespersonnes.
SPRAYGUNKICKSBACK
—Holdwithbothhands.
LAPISTOLASEMUEVECON
LAPRESIÓN—Sostengaconlas
dosmanos.
LAPOIGNEEPISTOLETRE-
POUSSE—Teniràdeuxmains.
RISKOFINJURY—HOT
SURFACESCANCAUSE
BURNS—Useonly
designedgrippingareasof
spraygunandwand.
SUPERFICIESCALIENTES
—Usesolamentelasáreas
aisladasdelgatilloylalanza.
SURFACESCHAUDES—
Toucherseulementlesparties
isoléesdespoignéepistolets
etlances.
RIESGODEEXPLOSION—Use
elproductoenáreasdondeelfuego
ollamaseanpermitidos.Norocie
liquidos
RISQUED’EXPLOSION—Utiliser
auxendroitsoùunenueest
permise.Nepasvaporiserdeliquides
RISKOF
EXPLOSION.Operateonly
whereopen
ortorchispermitted.
Donotspray
liquids.
RISQUEDEFEU OUD’EXPLOSION
RIESGODEINCENDIOOEXPLOSIÓN
RISKOFFIREOREXPLOSION
•Machineneedstobeinstalledonnon-combustible
withminimumclearanceof 18”.
Beforelighting,smellallaroundtheapplianceareafor
gas.Besuretosmellnexttothebecausesomegas
isheavierthanairandwillsettleontheIfyousmell
gas,immediatelycallyourgassupplierforinstructions.If
gassuppliercannotbereached,callthedepartment.
Do notusetoolstopushin orturnthegascontrol knob.
Ifknobwillnotpushinorturnbyhand,calla
servicetechnician.Usingforceorattemptingrepairmay
resultina orexplosion.
Shouldpilotoutage occur,turncontrolknobtoOFF
position.Wait5minutesbeforerelighting.
Donot usethisequipmentifanyparthasbeenunder
water.Immediatelycallaservicetechniciantoinspect
forrepair.
Elequipodebe serinstaladosobre unpisoresistente
alincendio,conunespaciolibrede18”minimo.
Antesdeencender,olfateealrededordelaparatopara
detectargas.Estéseguroderevisarcercadelpiso,
porqueciertosgasessonmáspesadosqueelaire.Si
olfateagas,aviseinmediatamenteasuproveedorde
gas.Alnolocalizarelproveedor,llamealosbomberos.
Nouseherramientaspara mover elcontroldelgas.
Silamanijanosepuedeoperarconlamano, llamea
untécnicocapacitado.Forzarointentarreparareste
controlpuederesultarenunincendioo explosión.
Enelcaso deapagarseelpiloto,apagueyespere5
minutosantesdeencender.
Noutiliceesteequipoenelcasoquehubieraestado
sumergidoenagua parcial ototalmenteun compo-
nente.Consulte conun técnicodeservicio.
N
epasinstallercemachineauxe
ndroitsoùilyades
combustibles(mêmelesplancher)dedansundemi-mètre.
A
vantl’allumage,autourdel’appareilpourdes
senteursdegaz.lesodeursprèsduplanchercar
certainsgazsontpluslourdsquel’airets’accumulentsur
leplancher.Sivousdétectezuneodeurdegaz, appelez
immédiatementvotrefournisseurdegaz.Sicelui-cine
peutêtrejoint,appelerledépartement desincendies.
Nepasutiliserd’outilspourpousseroutournerlasoupape
decontrôledugaz.Silasoupapenepeutêtreenfoncéeou
tournéeàlamain,appeleruntechnicienForcerou
essayerderéparerpeutcauserunfeuouuneexplosion.
Silepilotes’éteint,tournerlasoupape decontrôleen
positionOFF
.Attendre5minutesavantderéallumer.
Nepasutilisercetéquipement siunepartieaétéimmergée
dansl’eau.Appeleruntechnicienpourinspectercelui-ci.
8.900-990.0
CHAUD!
WARNING:
This product and accessories may contain a chemical known to the State of
California to cause cancer and birth defects or other reproductive harm.
For more information about this regulation: www.P65Warnings.ca.gov

9.801-509.0 - C • Karcher Operator's Manual
SYMBOLS
Pump Switch
Detergent
Steam Combination
Hour Meter
Motor Overload
When the light is on, it means the overload is tripped.
Reset overload.
Pilot Light
When the light is on, it means there is power to the pilot control.
If there is no light, see troubleshooting guide.
Voltage
When the light is on, it means power supply is on
Burner Switch
Not all machines have all symbols
Identification of Operational Label Symbols

3
CONTENTS
9.801-509.0 - C • Karcher Operator's Manual
Identification of Operational Label Symbols 2
Introduction & Safety Information 4-6
Component Identification-All Models 7
Installation HDS 3.5/20, 4.0/22, 3.9/30, 5.0/23, 4.8/30 8
Installation HDS 6.3/32, 8.0/32, 9.5/30 19
Installation 10-16
Assembly Instructions 17
Operating Instructions 18
Applying Detergent & General Washing Techniques 19
Shutting Down & Cleanup 20
Storage 20
Troubleshooting 21-24
Maintenance & Service 25
Heating Coils 25
Propane Gas 16
Burner Features 26-27
Basic Facts and Equivalents 28
Equivalents and Oil Change 29
Preventive Maintenance 30

9.801-509.0 - C • Karcher Operator's Manual
MANUAL PRESSURE WASHER
4
INTRODUCTION & IMPORTANT SAFETY INFORMATION
Thank you for purchasing this Pressure Washer.
We reserve the right to make changes at any time
without incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understand-
ing of the manufacturer’s operating instructions and
warnings before using this pressure washer. Warning
information should be emphasized and understood.
If the operator is not fluent in English, the manufac-
turer’s instructions and warnings shall be read to and
discussed with the operator in the operator’s native
language by the purchaser/owner, making sure that
the operator comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
The operator must know how to stop the machine
quickly and understand the operation of all controls.
Never permit anyone to operate the engine without
proper instructions.
SAVE THESE INSTRUCTIONS
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and
serial number. Use only identical replacement
parts.
This machine is to be used only by trained operators.
IMPORTANT SAFETY
INFORMATION
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result, causing
property damage, personal injury or loss of life.
WARNING:To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1. Read the owner's manual
thoroughly. Failure to follow
instructions and warnings
could cause malfunction of
the machine and result in
death, serious bodily injury
and/or property damage.
2. Know how to stop the machine and bleed pressure
quickly. Be thoroughly familiar with the controls.
3. Stay alert — watch what you are doing.
4. Use only your hand to push in or turn the gas
control knob. Never use a tool. If the knob will not
push in or turn by hand, don't try to repair it; call
a qualified service technician.
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.
5. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling distributor for specific details.
DANGER: Improper connection of the equipment-
grounding conductor can result in a risk of electro-
cution. Check with a qualified electrician or service
personnel if you are in doubt as to whether the
outlet is properly grounded.
WARNING: Keep wand, hose,
and water spray away from
electric wiring or fatal electric
shock may result.
6. To protect the operator from
electrical shock, the machine
must be electrically ground-
ed. It is the responsibility
of the owner to connect this
machine to a grounded receptacle of proper
voltage and amperage ratings. Do not spray
water on or near electrical components.
Do not touch machine with wet hands or while
standing in water. Always disconnect power
before servicing.
RISK OF EXPLOSION:
IF GAS SMELL
PRESENT TURN OFF
SUPPLY
WARNING
WARNING: Flammable liquids
can create fumes which can
ignite, causing property dam-
age or severe injury.
WARNING: Risk of explosion —
Operate only where open flame
or torch is permitted. Do not
spray flammable liquids.
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING
WARNING: Risk of fire — Do not
change LP tanks when the
product is operating or still hot.
WARNING: Use vapor fuel only.
7. Gas appliances shall be
installed only in locations
where combustible dusts and
flammable gases or vapors
are not present. Do not store
or use gasoline near this
machine.
WARNING: In the event of a pilot outage, wait
at least five minutes to clear out any gas before
relighting.
8. Keep operating area clear of all persons.
WARNING
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.

9.801-509.0 - C • Karcher Operator's Manual
5
PRESSURE WASHER MANUAL
IMPORTANT SAFETY INFORMATION
WARNING
USE PROTECTIVE
EYE WEAR
AND CLOTHING
WHEN OPERATING
THIS EQUIPMENT.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne
and fly at high speeds.To avoid
personal injury, eye, hand and
foot safety devices must be
worn.
9. Eye, hand, and foot protec-
tion must be worn when
using this equipment.
WARNING
EAR PROTECTION
MUST BE WORN
WARNING: This machine ex-
ceeds 85 db appropriate ear
protection must be worn.
WARNING
RISK OF INJURY.
HOT SURFACES
CAN CAUSE BURNS
WARNING: Risk of injury. Hot
surfaces can cause burns. Use
only designated gripping areas
of spray gun and wand. Do not
place hands or feet on non-in-
sulated areas of the pressure
washer.
10. To reduce risk of injury, close supervision is neces-
sary when a machine is used near children. Do not
allow children to operate pressure washer. This
machine must be attended during operation.
TRIGGER GUN KICKS
BACK - HOLD WITH
BOTH HANDS
WARNING
WARNING: Grip cleaning wand
securely with both hands be-
fore starting. Failure to do this
could result in injury from a
whipping wand.
11. Never make adjustments on
machine while in operation.
12. Be certain all quick coupler
fittings are secured before
using pressure washer.
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.
WARNING
WARNING: High pressure de-
veloped by these machines will
cause personal injury or equip-
ment damage. Keep clear of
nozzle. Use caution when op-
erating. Do not direct discharge
stream at people, or severe
injury or death will result.
WARNING
PROTECT FROM
FREEZING
WARNING: Protect machine
from freezing.
13. To keep machine in best
operating conditions, it is
important you protect machine
fromfreezing.Failure toprotect
machine from freezing
could cause malfunction of the
machine and result in death,
serious bodily injury, and/or property damage. Fol-
low storage instructions specified in this manual.
WARNING
RISK OF
ASPHYXIATION. USE
THIS PRODUCT ONLY
IN A WELL
VENTILATED AREA.
WARNING: Risk of asphyxiation.
Use this product only in a well
ventilated area.
14. Avoid installing machines in
small areas or near exhaust
fans. Adequate oxygen is
needed for combustion or
dangerous carbon monoxide
will result.
15. Manufacturer will not be liable for any changes
made to our standard machines or any compo-
nents not purchased from us.
16. The best insurance against an accident is precau-
tion and knowledge of the machine.
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING: Be extremely careful
when using a ladder, scaffold-
ing or any other relatively un-
stable location. The cleaning
area should have adequate
slopes and drainage to reduce
the possibility of a fall due to
slippery surfaces.
17. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
18. Do not operate this machine when fatigued or
under the influence of alcohol, prescription medi-
cations, or drugs.
19. Follow the maintenance instructions specified in
the manual.
WARNING: Use vapor fuel only.
20. The LP models are designed to run on vapor pro-
pane fuel. Do not use liquid fuel. Have a qualified
serviceman install and service your equipment.
21. Never expose a spark or flame where there may
be unburned gas present.