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 9.801-509.0 - C  •  Karcher Operator's Manual

MANU

AL

   

PRESSURE W

ASHER 

 

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 fl uent 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 fi re 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 qualifi ed 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 specifi c details.

DANGER: Improper connection of the equipment-
grounding conductor can result in a risk of electro-
cution. Check with a qualifi ed 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 electr ical 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 fl ame 
or torch is permitted.

 

Do not 

spray fl ammable liquids.

RISK OF FIRE. 

DO NOT ADD FUEL 
WHEN OPERATING 

MACHINE.

WARNING

WARNING: Risk of fi re — 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 
fl ammable 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 fi ve minutes to clear out any gas before 
relighting.

  8.  Keep operating area clear of all persons.

WARNING

KEEP WATER

SPRAY AWAY FROM 

ELECTRICAL WIRING.

Summary of Contents for HDS3.5/20

Page 1: ...DES LUN ETTE S DE SEC URIT E DOIV ENT ETR E POR TEES lorsq ue vous oper ez cet appa reil RISK OF ASP HYX IATI ON Use only in well vent i lated area RIES GO DE ASF IXIA Use el prod ucto en un area de...

Page 2: ...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 lig...

Page 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 Clea...

Page 4: ...ly 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...

Page 5: ...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 importantyou...

Page 6: ...WARNING If connection is made to potable water supply a back flow device must be provided 27 Exhaust gases should not be vented into a wall a ceiling or a concealed space of a building A draft diverte...

Page 7: ...DOR ES CAL IFIC ADO S LIRE LE MAN UEL DE L OP ERA TEU R AVA NT UTIL ISAT ION CET APP ARE IL DOIT ETR E UTIL ISE PAR DES OPE RA TEU RS QUA LIFIE S RIS K OF INJU RY PRO TEC TIVE EYE WEA R AND CLO THIN G...

Page 8: ...9 50 Dia Customer Supplied Draft Diverter 24 00 24 87 4 00 High Pressure Out 22mm Screw Connection 48 54 36 68 24 50 24 00 12 00 49 00 Water In 3 4 GHF 21 30 20 61 20 61 Exhaust Out 10 Dia NOTE Draft...

Page 9: ...side Floor Mounting Dimensions 19 50 Dia Customer Supplied Draft Diverter Control Panel 61 00 17 33 34 79 17 36 26 18 3 64 High Pressure Out 22mm Screw Connection 31 77 64 00 26 91 26 91 Water In 3 4...

Page 10: ...s recommended that a partition be made be tween the wash area and machine to prevent direct spray from the spray gun from coming in contact with the machine Excess moisture reaching the power unit or...

Page 11: ...roved by the Uniform Building Code Vents penetrating ceilings or walls should be double wall approved appliance vents and should be one to INSTALLATION LP Gas Liquid petroleum gas or propane LP gas is...

Page 12: ...e roof power venting is recommended to help eliminate exhaust restriction of this natural draft machine This draft inducer power vent must be installed by a li censed contractor who can calculate size...

Page 13: ...fluenced by the heat created inside the coil the design of the coil and flue and the length and diameter of the exhaust stack The table below shows data included in the operator s manual for flue and...

Page 14: ...is 4 2 wc in For an installation at 3500 feet reduce this pressure by 16 by setting the manifold pressure to 4 2 84 3 5 wc in This adjustment should only be made by a properly trained service technici...

Page 15: ...ollow instructions carefully when installing or servicing machine Failure to do so may result in damage to property or personal injury 1 Installation or servicing of gas appliances and controls must o...

Page 16: ...y for the BTU rating of the burner Is incoming gas supply pressure between 6 14 water column inches or 1 2 PSIG Has the proper gas regulator been installed for pressure and volume Have you installed t...

Page 17: ...will result Safety Latch Spray Gun High Pressure Hose 98015080 7 STEP 3 Connect garden hose to the cold water source Cold Water Source Garden Hose 98015080 10 STEP 6 Attach the Power Nozzle to end of...

Page 18: ...rgent Valve STEP 4 To apply detergent open the detergent valve counterclock wise making sure that the deter gent pick up tube is in the detergent solution and not sucking air 98016360 17 NOTE High pre...

Page 19: ...his thermal device prevents internal damage to the pump CLEANING TIPS Pre rinse cleaning surface with fresh water Place detergent suction tube directly into cleaning solu tion and apply to surface For...

Page 20: ...du syst me F Coupez l eau W ARNIN G PRE CAU CION AVE RTIS SEM ENT SK AL E NE BY ORS LEA EL MANUA L OPERA CION ANTES DE USARS E ESTE EQUIPO DEBE SER USADO SOLAM ENTE POR OPERA DORES CALIFIC ADOS LIRE L...

Page 21: ...ugging metering valve Disassemble and clean thoroughly High viscosity of detergent Dilute detergent to specifications Restriction behind float tank screen removed Install restriction Hole in detergent...

Page 22: ...all repair kit when needed Worn packing in pump Install new packing kit Fouled or dirty inlet or discharge valves in pump Clean inlet and discharge valve Worn inlet or discharge valves Replace with va...

Page 23: ...scale 1 Be sure main gas valve gas cock or selector arm is turned on 2 With gas on and system sparking probe terminals PV and 24V GND If pilot gas does not flow with 24 volts at these terminals repla...

Page 24: ...switch on With the pilot burning and the flame on the ignitor sensor rod the main burner should turn on If it does not replace the ignition control unit SHORT CYCLING OF MAIN BURNER MAIN BURNER TURNS...

Page 25: ...ump needs repairing CAUTION When using this procedure to test components keep the spray gun open at all times High Limit Hot Water Thermostat For safety each machine is equipped with a high limit cont...

Page 26: ...installed between pro pane bottle and gas valve Propane Cylinder Capacity An important consideration with propane systems is the capacity of the supply cylinder relative to the needs of the burner The...

Page 27: ...through the coil by whatever means are available for the particular system the water heater is used on To Adjust Pressure Regulator Adjustment of the pressure regulator is not normally necessary since...

Page 28: ...Lbs per Gal Liquid 4 23 4 87 BTU per Cu Ft Vapor 2 563 3 39 BTU per Gal Liquid 91 547 102 032 BTU per Lb Liquid 21 591 21 221 Cu Ft per Lb Liquid 8 607 6 53 Cu Ft per Gal Liquid 36 45 31 8 Octane Numb...

Page 29: ...essure gauge At the lower levels it is expressed in water column inches i e 11 w c i Higher pressures are expressed in terms of the force exerted against a square inch of area for example 125 lbs per...

Page 30: ...e life of your pressure washer Perform maintenance more often under severe conditions MAINTENANCE SCHEDULE Replace Fuel Lines Annually Pump Oil Inspect Daily inspect the oil level Change After first 5...

Page 31: ......

Page 32: ...HDS 9 801 509 0 Printed in U S A...

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