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ition
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TI SS
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tor
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lad
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ner
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tem
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RFA
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Tou
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las
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TE
S
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l coil
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98015080-1
HDS3.9/30
HDS6.3/32
9.801-509.0 - E

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  • Page 1 If kno e tec t out it 5 pilo itio this ter. air. 98015080-1 ® HDS3.5/20 HDS4.0/22 HDS3.9/30 HDS5.0/23 HDS4.8/30 HDS6.3/32 HDS8.0/32 HDS9.5/30 To locate your local Kärcher Commercial Pressure Washer Dealer nearest you, visit www.karchercommercial.com 10/31/24 9.801-509.0 - E...
  • Page 2: Identification Of Operational Label Symbols

    SYMBOLS Identification of Operational Label Symbols Burner Switch Pump Switch Hour Meter Steam Combination Detergent Voltage When the light is on, it means power supply is on Pilot Light When the light is on, it means there is power to the pilot control. If there is no light, see troubleshooting guide.
  • Page 3: Table Of Contents

    CONTENTS Identification of Operational Label Symbols Introduction & Safety Information Component Identification-All Models Installation HDS 3.5/20, 4.0/22, 3.9/30, 5.0/23, 4.8/30 Installation HDS 6.3/32, 8.0/32, 9.5/30 Installation 10-16 Assembly Instructions Operating Instructions Applying Detergent & General Washing Techniques Shutting Down & Cleanup Storage Troubleshooting 21-24...
  • Page 4: Introduction & Safety Information

    INTRODUCTION & IMPORTANT SAFETY INFORMATION 5. All installations must comply with local codes. Thank you for purchasing this Pressure Washer. Contact your electrician, plumber, utility com- We reserve the right to make changes at any time without pany or the selling distributor for specific details. incurring any obligation.
  • Page 5 IMPORTANT SAFETY INFORMATION 8. Keep operating area clear of all persons. WARNING: Protect machine from WARNING WARNING: High pressure spray freezing. WARNING can cause paint chips or other 13. To keep machine in best op- particles to become airborne erating conditions, it is important and fly at high speeds.
  • Page 6 IMPORTANT SAFETY INFORMATION Example of Down Draft Diverter for Gas Fired 23. Install this machine about 2 feet from wall to Machines provide adequate ventilation and servicing space. This equipment incorporates parts such as snap switches or similar parts that tend to produce arcs or sparks.
  • Page 7: Component Identification-All Models

    COMPONENT IDENTIFICATION - ALL MODELS Gas Inlet located at Rear of Machine Pump/Burner Exhaust Switches Spray Wand Collar Detergent High Valve Pressure Power Nozzle Access S OU M PL T UT ILIS D ’E S BL éa TÉ éch L’O ”.
  • Page 8: Installation Hds 3.5/20, 4.0/22, 3.9/30, 5.0/23, 4.8/30

    INSTALLATION HDS 3.5/20, 4.0/22, 3.9/30, 5.0/23, 4.8/30 Piping to Outside 24.50" Customer Supplied Draft Diverter 12.00" 19.50" Dia. 24.00" 36.00" (Recommended) 36.68" Exhaust Out 4.00" 10" Dia. 3/4" Gas Inlet Connection Control Panel High Pressure 48.54" Out 22mm Screw Connection Inlet Electrical Connection 24.87"...
  • Page 9 INSTALLATION HDS 6.3/32, 8.0/32, 9.5/30 Piping to Outside 17.33" 34.79" Customer Supplied Draft Diverter 17.36" 19.50" 36" (Recommended) Exhaust Out 12" Dia. Control Panel 1" Gas Inlet Connection High Pressure Out 22mm Screw 61.00" Connection Inlet Electrical Connection 26.18" Water In 3/4"...
  • Page 10: Gas Piping

    INSTALLATION Place machine in a convenient location providing ample This machine shall be rigidly connected to the gas pip- support, drainage and room for maintenance (pgs 8-9). ing outlet and equipped with external manual shut-off valves adjacent to such machine. All gas piping shall be Location: approved and installed in accordance with the Uniform Mechanical Code.
  • Page 11: Lp-Gas (Liquid Petroleum Gas Or Propane)

    INSTALLATION further reduce capacity. For example, in 1" size, an elbow is are equipped with a fixed liquid level gauge which con- equivalent to about 2.6 feet of pipe and a tee is equivalent tacts the liquid level at 80% of container capacity, allowing to about 5.2 feet of pipe.
  • Page 12: Water Source

    INSTALLATION together at the joints with sheet metal screws, usually length which may restrict air flow it is recommended three per joint. If the inspector indicates that the vent is that a contractor install a power vent. When a contractor too close to combustibles, it may be necessary to chisel has found it impossible to vent straight through the roof away some of the combustible or route the vent pipe...
  • Page 13: Gas Pressure

    INSTALLATION Before turning gas under pressure into piping, all open- can be purchased for a little at $500 (Bacharach Fyrite Tech, ings from which gas can escape should be closed. Im- Testo 310). The analyzer must determine percent oxygen mediately after turning on gas, the system should be and/or percent excess air as a minimum.
  • Page 14: Installations Above 2000 Ft

    INSTALLATION Follow steps 1-6 above to optimize the outlet tem- perature of the pressure washer. Installations Above 2000 ft: Installation at altitudes greater than 2000 ft will require adjustments to the gas manifold pressure. For installations above 2000 feet the firing rate should be reduced by 4% per 1000 feet.
  • Page 15: For Your Safety

    INSTALLATION START-UP FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: Read and follow instructions carefully WARNING when installing or servicing machine. Failure to do If you do not follow these instructions exactly, a fire or so may result in damage to property or personal explosion may result, causing property damage, personal injury.
  • Page 16 INSTALLATION Has gas supply been inspected by an au- thorized contractor to meet local codes? Is machine protected from downdraft and excessive wind? Is machine shielded from moisture or water spray? Is the voltage correct and are the circuit breaker and supply cord adequate ac- cording to specifications and serial plate notation? Is the machine electrically grounded?
  • Page 17: Assembly Instructions

    ASSEMBLY INSTRUCTIONS Pump Discharge Safety Latch Fitting Cold Water Source High Pressure Hose High Garden Pressure Spray Hose Hose 98015080-6 98015080-7 98015080-5 STEP 1: Attach the high pressure hose STEP 2: Connect the high pressure STEP 3: Connect garden hose to to the spray gun.
  • Page 18: Operating Instructions

    OPERATING INSTRUCTIONS STEP 2: Turn on main gas supply and depress and turn control knob to the ‘ON’ position. 98015080-12 STEP 1: Have an electrician connect power supply into electrical box ac- cording to information shown on the serial plate. 98015080-13 Detergent Valve...
  • Page 19: Applying Detergent & General Operating Techniques

    APPLYING DETERGENT & GENERAL OPERATING TECHNIQUES WARNING: Some detergents THERMAL PUMP PROTECTION WARNING may be harmful if inhaled If you run the engine for 3-5 minutes without pressing the or ingested, causing severe trigger on the spray gun, circulating water in the pump nausea, fainting or poisoning.
  • Page 20: Shutting Down & Cleanup

    SHUTTING DOWN AND CLEANUP ecte terre cteu r l’eau veil OPER DAÑO Conn mise à la . Le procé disjon press ion, coule z l’inter rupte “ON” . La USAR ONAL à l’aide disjon cteur à haute faites . Mette posit brûle “ON”...
  • Page 21: Troubleshooting

    TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION WATER Incoming water to machine warm or hot Lower incoming water temperature. TEMPERATURE Gas pressure too high See specifications for proper gas pressure. TOO HOT Detergent line sucking air Tighten all clamps. Check detergent lines for holes.
  • Page 22 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Oil seal worn Check and replace if necessary. DRIPPING Faulty pressure gauge Install new gauge. OPERATING Insuffient water supply Use larger garden hose. Clean filter washer at water PRESSURE inlet. Old, worn or incorrect spray nozzle Match nozzle number to machine and /or replace new nozzle.
  • Page 23 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION FLOW & BURNER SWITCH A. No main power With power switch on, open trigger on spray gun and set your test meter to the 24 volt scale. Probe NO SPARK, B. Faulty transformer terminals 24V and 24V(GND). If you do not read 24 NO PILOT GAS volts, the problem is not the ignition system.
  • Page 24 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION HAVE PILOT FLAME, Faulty main valve coil in the Set test meter to 24 volt scale. MAIN BURNER WILL NOT gas valve TURN ON Faulty ignitor/sensor and/or its With pilot flame on ignitor/sensor, probe terminals wiring MV and MV/PV on the ignition control unit.
  • Page 25: Maintenance And Service

    MAINTENANCE AND SERVICE Spray Nozzles: should exceed its operating temperature, the high limit control will turn the burner off until the water cools. Each machine is equipped with one or more spray nozzles, depending on the model. Different spray nozzles are Pumps: calibrated for each machine, depending on the flow and Use only SAE 10W-40 non-foaming oil.
  • Page 26: Propane Gas

    MAINTENANCE & SERVICE 11 w.c.i. (between 1/3 and 1/2 of one psi), and are often ADJUSTMENT operated at even higher pressures when extra heat is needed. Adjustment of the built-in regulator isn’t normally neces- sary, since it is preset at the factory. However, field adjust- Exterior regulators are needed to control gas pressure.
  • Page 27 MAINTENANCE & SERVICE CAUTION: Do not ream out orifices to a larger size. If the water heater will be exposed to freezing weather, an anti-freeze solution should be circulated through the coil by whatever means are available for the particular system the water heater is used on.
  • Page 28: Basic Facts And Equivalents

    MAINTENANCE AND SERVICE BASIC FACTS Based on 60° Propane Butane 1 Cu. Ft. NG Approx 1000 BTU Formula C3H8 C4H10 Vaporization Point (°F) -43.7 31.1 Specific Gravity (Vapor) 1.522 2.006 Specific Gravity (Liquid) 0.508 0.584 Lbs. per Gal. (Liquid) 4.23 4.87 BTU per Cu.
  • Page 29: Pressure Equivalents

    MAINTENANCE AND SERVICE PRESSURE EQUIVALENTS Simply stated, pressure is the force exerted by a gas or liquid attempting to escape from a container. It is useful to know how strong this “attempt to escape” is. Pressure can be measured with a manometer or with a pressure gauge. At the lower levels, it is expressed in water column inches i.e.
  • Page 30: Preventive Maintenance

    PREVENTATIVE MAINTENANCE This pressure washer was produced with the best available materials and quality craftsmanship. However, you as the owner have certain responsibilities for the correct care of the equipment. Attention to regular preventative maintenance procedures will assist in preserving the performance of your equipment. Contact your dealer for maintenance.
  • Page 32 THANK YOU! DANKE! MERCI! GRACIAS! Register your product and benefit from many advantages. Enregistrez votre produit et bénéficiez de nombreux avantages. Registre su producto y aproveche de muchas ventajas. Registrieren Sie Ihr Prudukt und Sie von vielen Vorteilen. www.kaercher.com/welcome Rate your product and tell us your opinion. Évaluez votre produit et donnez-nous votre opinion.

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