ENG Series Hot Water Electric Powered Natural Gas or LP Heated Pressure

Washer

Product Information

Specifications

• Product Name: ENG Series Pressure Washer

• Power Source: Electric Powered Natural Gas or LP Heated

• Models: ENG4-2000, ENG4-2200, ENG4-3000, ENG5-2300, ENG5-3000,
  ENG6-3200, ENG8-3200, ENG10-3000

• Manufacturer: Landa

• Website: www.landa.com

Product Usage Instructions

Safety

The safety section contains important information regarding
hazardous or unsafe practices of the machine. It provides levels of
hazards that could result in product damage, personal injury, or
severe injury resulting in death. Please read this section
carefully before using the pressure washer.

Operations

The operations section aims to familiarize the operator with the
operation and function of the machine. It provides detailed
information on component identification and general operating
techniques.

Component Identification – All Models

This section provides a visual guide to identify the different
components of the pressure washer. It helps users understand the
layout and location of various switches, meters, and controls.

General Operating Techniques

This section explains the step-by-step process of using the
pressure washer effectively. It covers topics such as thermal pump
protection, rinsing, shutting down and clean up, and storage.

Maintenance

The maintenance section contains preventive maintenance
procedures to keep the machine and its components in good working
condition. It provides instructions on regular maintenance tasks to
ensure the longevity and optimal performance of the pressure
washer.

FAQ

Q: Where can I find the model and serial number of my

machine?

A: The model and serial number of your machine are located on
the back of the machine.

Q: How can I order repair parts for my pressure washer?

A: Authorized dealers can provide you with the correct repair
parts. When placing an order, make sure to provide the machine
model and machine serial number. You can find this information in
the MACHINE DATA box located on the inside of the front cover of
the manual.

Q: Where can I find more information or contact a Landa

dealer?

A: For more information or to find the nearest Landa dealer, you
can visit the Landa website at www.landa.com.

ENG Series
Hot Water – Electric Powered Natural Gas or LP Heated
Operator’s Manual

Pressure Washer

MODELS

ENG4-2000 ENG4-2200 ENG4-3000 ENG5-2300 ENG5-3000 ENG6-3200 ENG8-3200 ENG10-3000

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For the Landa Dealer nearest you, consult our web page at
www.landa.com
9.801-511.0-F 12/13/19

Machine Data Label

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.
Motor Overload
When the light is on, it means the overload is tripped. Reset overload.

Not all machines have all symbols

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Machine Data Label . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 How To Use This Manual . . . . . . . . . . . . . . . . . . . . . 4
Safety
Introduction & Safety Information . . . . . . . . . . . . . . . 5 Important Safety Information. . . . . . . . . . . . . . . . . . . 6 Propane Tank Safety Instructions. . . . . . . . . . . . . . . 9
Operations
Component Identification – All Models . . . . . . . . . . 11 Installation Eng 4-2000, 4-2200, 4-3000, 5-2300, 5-
3000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Installation Eng 6-3200, 8-3200, 10-3000. . . . . . . . 13 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Gas Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Pipe Sizing Chart for Natural Gas. . . . . . . . . . . . . . 14 LP-Gas (Liquid Petroleum Gas or Propane) . . . . . . 15 Filling the LP-Gas Container. . . . . . . . . . . . . . . . . . 15 Propane Tank Disposal. . . . . . . . . . . . . . . . . . . . . . 15 Exhaust Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Water Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Installations Above 2000 ft . . . . . . . . . . . . . . . . . . . 18 Gas Valve Replacement . . . . . . . . . . . . . . . . . . . . . 18 Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . 21 Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . 22 Applying Detergent &
General Operating Techniques . . . . . . . . . . . . . . 23 Thermal Pump Protection . . . . . . . . . . . . . . . . . . . . 23 Rinsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Shutting Down And
Clean Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance
Maintenance And Service . . . . . . . . . . . . . . . . . . . . 26 Spray Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Unloader Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Winterizing Procedure. . . . . . . . . . . . . . . . . . . . . . . 26 Low Pressure Diagnosis . . . . . . . . . . . . . . . . . . . . . 26 High Limit Hot Water Thermostat . . . . . . . . . . . . . . 26 Pumps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Heating Coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Pressure Relief Valve . . . . . . . . . . . . . . . . . . . . . . . 27 Propane Gas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Burner Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Burner Basic Facts . . . . . . . . . . . . . . . . . . . . . . . . . 29 Pressure Equivalents . . . . . . . . . . . . . . . . . . . . . . . 30 Oil Change Record . . . . . . . . . . . . . . . . . . . . . . . . . 30 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 31 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Landa ENG Operator’s 9.801-511.0 – F

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Table of Contents
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How To Use This Manual

This manual contains the following sections:
· How to Use This Manual · Safety · Operations · Maintenance
The HOW TO USE THIS MANUAL section will tell you how to find important information for ordering correct repair parts.
Parts may be ordered from authorized dealers. When placing an order for parts, the machine model and machine serial number are important. Refer to the MACHINE DATA box which is filled out during the installation of your machine. The MACHINE DATA box is located on the inside of the front cover of this manual.
Model: Date of Purchase: Serial Number: Dealer: Address: Phone Number: Sales Representative:
The model and serial number of your machine are located on the back of the machine.

The SAFETY section contains important information regarding hazardous or unsafe practices of the machine. Levels of hazards are identified that could result in product damage, personal injury, or severe injury resulting in death.
The OPERATIONS section is to familiarize the operator with the operation and function of the machine.
The MAINTENANCE section contains preventive maintenance to keep the machine and its components in good working condition. They are listed in this general order:
· Maintenance And Service · Spray Nozzles · Unloader Valves · Winterizing Procedure · Low Pressure Diagnosis · High Limit Hot Water Thermostat · Pumps · Heating Coils · Pressure Relief Valve · Propane Gas · Burner Features · Basic Facts · Pressure Equivalents · Oil Change Record · Troubleshooting

NOTE: The manual part number is located on the lower right corner of the front cover.

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Introduction & 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 understanding 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 manufacturer’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.

Safety

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Safety

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.

AVERTISSEMENT: Si ces directives ne sont pas suivies à la lettre, un incendie ou une explosion pourrait survenir et entraîner des dommages à la propriété, des lésions corporelles ou la mort.

WARNING: To reduce the risk of WARNING injury, read operating instructions

carefully before using.

SAFETY OPERATIONS
MAINTENANCE

AVERTISSEMENT: Pour réduire le risque de blessures, lire attentive-

ment les instructions de

READ OPERATOR’S MANUAL THOROUGHLY
PRIOR TO USE.

fonctionnement avant l’utilisation
1. Read the owner’s manual thoroughly. Failure to follow instruc-

tions 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.

5. All installations must comply with local codes. Contact your electrician, plumber, utility company or the selling dealer for specific details.

DANGER: Improper connection of the equipmentgrounding conductor can result in a risk of electrocution. Check with a qualified electrician or service personnel if you are in doubt as to whether the outlet is properly grounded.

DANGER: Une mauvaise connexion du conducteur de terre de l’équipement peut entraîner un risque d’électrocution. Vérifier auprès d’un électricien qualifié ou du personnel d’entretien si vous avez des doutes quant à savoir si lasortie est correctement mise à la masse.

DANGER

DANGER: Keep wand, hose, and water spray away from electric wiring or fatal electric shock may result.

KEEP WATER SPRAY AWAY FROM ELECTRICAL WIRING.

AVERTISSEMENT: Garder la lance, le boyau et le jet d’eau à l’écart de tout câblage électrique ou des chocs électriques mortels pourraient survenir

6. To protect the operator from electrical shock, the machine must be electrically grounded. 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.

WARNING: Flammable liquids can create fumes which can ignite, causing property damage or severe injury.

AVERTISSEMENT: Des liquides inflammables peuvent produire des vapeurs qui peuvent s’enflammer, causant ainsi des dommages à la propriété ou des blessures graves.

WARNING

WARNING: Risk of explosion — Operate only where open flame or torch is permitted. Do not spray flammable liquids.

RISK OF EXPLOSION: IF GAS SMELL
PRESENT TURN OFF SUPPLY

AVERTISSEMENT: Risque d’explosion- Utiliser uniquement dans des endroits où l’utilisation d’une flamme nue ou d’une torche est permise.

WARNING WARNING: Risk of fire — Do not change LP tanks when the
product is operating or still hot.

RISK OF FIRE. DO NOT ADD FUEL WHEN OPERATING
MACHINE.

AVERTISSEMENT: Risque d’incendie – Ne pas changer les réservoirs pendant que le produit est en marche ou encore chaud

WARNING: Use vapor fuel only.

AVERTISSEMENT: Utiliser des vapeurs de carburant seulement.
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 flammable materials near this machine.

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Safety

WARNING: In the event of a pilot outage, wait at least five minutes to clear out any gas before relighting.

AVERTISSEMENT: En cas de panne de la veilleuse, attendre au moins cinq minutes pour permettre au gaz de se dissiper avant de rallumer.

8. Keep operating area clear of all persons.

WARNING: High pressure spray WARNING 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.

USE PROTECTIVE EYE WEAR
AND CLOTHING WHEN OPERATING THIS EQUIPMENT.

AVERTISSEMENT: Un jet haute pression peut écailler la peinture ou provoquer l’émission d’autres

particules dans l’air et leur projec-

tion à hautes vitesses. Pour éviter les lésions

corporelles, une protection des yeux, du visage,

des mains et des pieds doit être portée lors de l’util-

isation de cet équipement

9. Always wear properly rated eye protection such as safety goggles or face shield while spraying. (Safety glasses do not provide full protection)

WARNING

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- insulated areas of the pressure washer.

RISK OF INJURY. HOT SURFACES CAN CAUSE BURNS

AVERTISSEMENT: Risque de blessures. Les surfaces chaudes peuvent causer des brûlures.

Utiliser uniquement les zones de prise désignées

du pistolet pulvérisateur et de la lance. Ne pas

placer les mains ou les pieds sur des endroits non

isolés de la laveuse à pression

10. To reduce risk of injury, close supervision is necessary when a machine is used near children. Do not allow children to operate pressure washer. This machine must be attended during operation.
WARNING WARNING: Grip cleaning wand securely with both hands before starting. Failure to do this could result in injury from a whipping wand.

TRIGGER GUN KICKS BACK — HOLD WITH
BOTH HANDS

AVERTISSEMENT: Agripper la lance de nettoyage avec les deux mains avant de commencer. Le nonrespect de cette consigne pourrait mener à des blessures causées par le mouvement violent de la lance

11. Never make adjustments on machine while in operation.

12. Be certain all quick coupler fittings are secured before using pressure washer.

WARNING: High pressure WARNING developed by these machines will
cause personal injury or equipment damage. Keep clear of nozzle. Use caution when operating. Do not direct discharge RISK OF INJECTION stream at people or animals, or OR SEVERE INJURY severe injury or death will result.
TO PERSONS. KEEP
CLEAR OF NOZZLE. AVERTISSEMENT: La haute pression générée par ces
machines causera des lésions corporelles ou des dommages à l’équipement. Se tenir à l’écart de la buse. Faire preuve de prudence lors de l’utilisation. Ne pas décharger directement le jet vers des personnes ou des animaux, car cela risquerait de causer des blessures graves ou même la mort.

WARNING: Protect machine from WARNING freezing.

AVERTISSEMENT: Protéger la machine contre le gel.

13. To keep machine in best

operating conditions, it is

PROCTECT FROM FREEZING

important you protect machine from freezing. Failure to protect

machine from freezing could

cause malfunction of the machine and result in

death, serious bodily injury, and/or property

damage. Follow storage instructions specified in

this manual.

DANGER

DANGER: Risk of asphyxiation. Use this product only in a well ventilated area.

DANGER: Risque d’asphyxie. Ne

pas inhaler les vapeurs.

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.

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Safety

15. Manufacturer will not be liable for any changes made to our standard machines or any components not purchased from us.

16. The best insurance against an accident is precaution and knowledge of the machine.

WARNING: Be extremely careful WARNING when using a ladder, scaffolding

or any other relatively unstable

location. The cleaning area should

have adequate slopes and

drainage to reduce the possibility

of a fall due to slippery surfaces.

RISK OF INJURY FROM FALLS WHEN
USING LADDER.

17. AVERTISSEMENT: Faire preuve d’une extrême

prudence au moment d’utiliser

une échelle, des échafaudages ou toute autre

surface relativement instable. La zone de

nettoyage doit avoir une pente et un drainage

adéquats pour réduire la possibilité d’une

chute due à une surface glissante.

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 medications, or drugs.

19. Follow the maintenance instructions specified in the manual.

20. The LP models are designed to run on vapor propane 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.

22. Install this machine about 2 feet from wall to provide adequate ventilation and servicing space. This equipment incorporates parts such as snap switches or similar parts that tend to produce arcs or sparks. Therefore, when located in a garage, it should be in a room or enclosure provided for the purpose or should be installed 18″ (457mm) or more above the floor.

WARNING: To reduce the risk of electric shock, disconnect all electrical connections and shut-off gas valve before servicing.
AVERTISSEMENT: Pour réduire le risque de choc électrique, débrancher toutes les connexions électriques et la soupape de coupure des gaz avant d’effectuer des opérations d’entretien.
23. Install this machine on non combustible flooring.
24. Exhaust gases should not be vented into a wall, a ceiling or a concealed space of a building. A draft diverter must be installed to prevent down draft and to allow cooling of exhaust temperatures. Down draft diverters shall be installed in the vents and located at a distance from the pressure washer stack to achieve maximum draft of 36″ minimum. Exhaust gases that exceed 470°F (243°C) are not suitable for connection to Type B gas vents.
Example of Down Draft Diverter for Gas Fired Machines

WARNING WARNING: Do not spray machine or any people, animals or electrical parts.

DO NOT SPRAY MACHINE OR ANY PEOPLE, ANIMALS OR ELECTRICAL PARTS.

AVERTISSEMENT: Ne pas vaporiser sur la machine ou les gens, les animaux ou les pièces électriques.

Follow the maintenance instructions specified in the manual.

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Safety

Propane Tank Safety Instructions
CAUTION: Only qualified persons should fill your LP-gas containers.
ATTENTION: Les contenants de gaz de pétrole liquéfié doivent être remplis uniquement par des personnes qualifiées.
1. Never allow your LP-gas container to be filled above the maximum safe level as indicated by a scale or the fixed liquid level gauge (outage). Do not use the visible gauge for filling.
2. Do not use a wrench or pliers to close the service valve or fixed liquid level gauge. These valves are designed to be closed leak-tight by hand or screwdriver as appropriate. If wrenches are necessary to stop a leak, the valve needs repair or replacement.
3. When tightening the POL Nut (left hand thread) on the service valve, draw it up snug with a proper wrench. This is a machined male brass fitting which seats securely against a female seat in the POL valve ­ no pipe dope is necessary. Acme/ Type 1 valves have right handed threads which are secure when hand tight, and on the Quick Disconnect/Type 2 Valves, the male connection is inserted into the female connection on the cylinder valve. (No wrenches required for both the Acme and the Quick Disconnect.)
4. When using container, slowly open service valve all the way. Listen to the regulator. A continuous hiss may indicate a leak or an open valve on an appliance.
5. Check all tank and the line connections periodically to be sure they are tight. When testing for leaks, use approved leak detector solution ­ not matches.
6. Make certain your container is properly fastened in place.
7. Turn container with open part of container guard towards frame. This protects valves and regulator against flying rocks and mud. Transport container in the proper position in which it is used, with the valves closed and POL Plugs inserted for POL Valves or Dust Caps for Acme Valves. Secure the tank against falling or rolling.
8. Check for leaks after connecting. Apply approved leak detector solution to connection, turn off all burners and pilots, and open service valve. Leaks will be detected by the growth of the bubbles. If bubbles grow, tighten or repair the connection as needed. Repeat leak test until problem is corrected.

9. LP-gas is normally non-corrosive ­ you need not worry about the inside of your container. However, the outside should be kept free from rust by a periodic coat of paint in a light reflective color. It is very important to inspect and maintain the bottom and foot ring on the container.
10. Do not store LP-gas containers indoors or in enclosed areas. Do not expose LP-gas container to heat. Always store with service valve closed and plugged as required.
11. Do not attempt to repair any containers, container valves, regulator or appliances by yourself. Use only trained certified LP-gas service personnel to perform repairs.

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Safety

Install optional LP gas regulator assembly, item 9.802633.0 or obtain a proper size regulator.

REF
1 2 3 4
5

PART NO.
9.802633.0 9.802-019.0 8.717-747.0 8.717-746.0 8.711-855.0
8.717-782.0

QTY
1 1 1 1 1
1

DESCRIPTION
REGULATOR, LP ASSEMBLY
NIPPLE, 3/4″ X 2″, BLACK
REGULATOR, R622CFF FOR R932/28 & R932462
REGULATOR, HI PRESSURE, R321H22
HOSE, 1/2″ X 19″, PROPANE
FITTING, PIGTAIL, FISHER, M318 (INCLUDED WHEN ORDERING PART 8.717746.0)

Optional Regulator Kit 9.802-633.0

To BPorottpleane To PreGsassurInelWetasher

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Landa ENG Operator’s 9.801-511.0 – F

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Component Identification – All Models
Gas Inlet located at Rear of Machine

Operations

High Pressure
Nozzle

Spray Wand

Wand Quick Coupler

Water Supply Hose
(not included)

Water Inlet
Hot Water Discharge
Nipple

Exhaust Collar

Pump/Burner Switches

CHAUD!
Trigger Spray Gun

4

2

86

0

10

16

12

14

GROUND TATCAHC/HH/OHUORUR
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’SAoUltFécesFPcwiaaURMpOTRhrcswEeESSSurslxerenshuliFotgetoupelcceleFcriliwyoahaO- crPIREAiauRrEReesAan’tlbSNiLdQIdAsiBRFrKnKoNIesritpetetllNasaiuen”nrEhnGrtnfyNirrhsnttGaHueieEieTiLROtafseE”g”orlàesaTynsseUniioUntnRptrEcErcGfetai.cqatrsiPFelruEtrfonOsO,JtoppCruecEIeaoProneYtgitohFAhvsiEgooualoutt.reFiDteatcEotCBOa.lwo.forCuhpeUnulfusEtrrsrUsiheATeetCuorseN’XFsnFUerTrncantioenTIRaslvsuren.InisU.eRneelmEa.aEnreeRttaulteRidesnSàeOucNo.iiTITeleoiuSRiwLaeHmrDttlniIrAdoocrA”2bsntl.t.CéudO,iDminenN .arYrlavOOdEWhoIrodDdLapijoRTnee- IrderIlucyyecVnadTpnaneve3tnECSnettOeeYtrNI.JNDcno”ossteaagEiemOhelN’eRncdpOseIErO..nionshCtpsSUAtc”tUiOmsf.sg”idrltTseetGovPMthlOcnBlN.atéPgEtocabnwtONaXiReLhpp1sTLeahedeeERtcaiHnNeiitloMbnpenNonhuMlurEsEareaoAeA ”ttinI8etIoOtNhNmrSt- amiP.YOYrteuNeiunaEhlr.dnsces”éptrgrAoRnet”AFpCfneDtctfe.toTLniJctehod.oEi–pNpti,-êaepctmlwCargrLs .oUOrtieAsiURNYtHasoloicHaereotseintcel-sqHnt.irertieiRTljossuiOdnR .iensIeUakaalsI- euIatIltnsBnSiNcYaNeoNucOsltTvgntneloaauAEnidusditelbogreKooeEeSY.IEsOuocGnnsReneterrfaheLnnsc ..rmtt-eddebsResyp- uIttoS.etpoOroabcna.otamiurtuonrliNtieuosrmsekspnRsEcsTDLUAylMDDDDRnlApLPRRdOanntpoamnmpouregi6eera127985E34IEVLRdOISOEOsEIIINarcbeaoRooFSEESfrmp..sc..n…..caaneAU.AireoEOSAnlDdcaIRIóbpEqtFrUQSSsItepyTKVs”CtDCFCA(BDEeACCSlpArpDpEeRtNrreutifipyn.lC.DTOEeuOiEebE.oGLGlcrSroeUEu.n..us..noOooeoLcySoETEeeuurnaNOuSaNnOTarLUnencjAtlflnsnONOEElCPADPPseoeelon)TrgoJaydbtCiwsgQvUpRs”.eedíNeeeReFtoqbbqoCTMeprSaLieeeARdIdeoeuueEDMuec(cDDeeNeEnTg.UannuaaunOEnadEjEoSneAOcourstSétrEAefEtnlsleAd’NEgIcEegreyeeAgedrAoo.AruTApNstELcsiispCLoleEcLaNThDaynoasPsuqrduDUarNaeTLllutlsiIflaS.EoAECIuoaAauidacnelRoa.euESUrUanreFdgeodrLeeeEIeIaTElUiLuoopPfLeendEFeDSDeetCMIslllaEApfeatIAmllrleOmTIasnSaeSureoCoNomEEnIHLdpsbMNdFUOe.iillTpiellElsEerLnnibdeaIver.aassSutPaTaeiIemLACerAeIsYOdADDeoaseIS)etStNenXrSnniNENANgaopEnSdsmccumsnOnEteeOeeelpOaldemDtrzrDTonNvXepOzlREIoytEDg.eNuoogIaotaalloeennrrTeDilennilutoociNAeAfíiRRTriUfisePsrrIOeduEneácudaacaqnoJimEannnlsrfgntEEolenuuSetP.OldntrInAdI.eaeee.irqTOqEcteeorPu.éIQioOjieotu.eSusutRnnntatpupEqgCqunne.énAEl:ccCeeterrLLUuc)hectrsEePurUlaAtRscnglCtngvtttteaU.euaU.tsmoSstrearugéc’eoaiCoRaolirtooceEe.eiUseEtOeoDEenlOSiueetlnleciAesacenUégld.encvtiI.npinpreodrprrCesndUnaDapnTCicPnaEcteSnattdraPrsDlrRgpCdagietpineoceaCdddci.CGeyeudtuncce,anEoeosRO)oUheresfaediauO .EaAtlEuriroeedIKi-igrippIrcocrleoseeyeiaOOrlpooolonaee(ÓgIOn- rswljomeoslCilPRSdeáoPtaOtttuTasearacDleorcrnn,losoueoíeesqraPNl,atCtEmdloNgcitemashAA.PiEespideroeatccearrcEO.rcnudorunlIlnREacAuaeahe.aotibmbAC.oaTqineuspaOsoaiveAAjeoeeBsl–dneDpPnauouAvsSdLRmoeptrnuetEioRElmndonrnceadsgNori.g .auibAEdliEeCImaaleeasgaeAeaezlesNOUciseselradiEEuomsKgnisascCSTetyIlRenpenucascgaitseqbaÓrle- SceNeqclvtopuReuaIdeeoEatcáirnotiEéoaALunasPrualucónáetuNeAtnoletoEaatororaiaetoI- rpaSotieng,Rslenoadnpl- seii.sadm)nRdnreatiRvNncSegpAspiudcao,seOripaldnmtnaounaecmtsuueasoeeeNLaliepoopprolrP.-lavmsnCeaafsscpranllElgseeTsDli.adaroaaIrpetsigeopnoElioaSelEóediuaudp.dintFaecrtEtunaromtnpdDneonInipSvEccéoElrerieitaOoaaróaroeeipAolteteeoiripmecNualnaedDooeamNrnCgsrdtolDyreip2nnGztraenreOE.iapllaEseydocouc”pEtlDdáeamialdzmeóisFeOiSluccirpeoUcibSrivsóosablrerrnPsrlCaaooetieoFaaoc3iSiI.eParnó.rolresocnsoeOrpsanotId,rFvAtErtqnnErtndomeue”idboeonledele”RuROplltclltddervoti”ana,armaeeeeiRns(reaadrOSSnoeeFieqOAodcbmaseampltsaloOdaEunldFeFatmceuPeAaialpoluade.el1t.orNaeaeeF”loAnevqsrdlaanore8srEsdddLAa(PC”esuGitceovobacAgceusnAo”aich.eL(eémipooipoiXAmAanPurcaEótIermleulmrqOpaminopediOiAdDPeisenScarexboatlrrPuPtsaraiiacAniGboiaOendnprpeoa”i.OnuedE.dyNaeoaGObtapLrAlilravq)oooRarnomorsrl.DoeANaeeaDuereasrardA,esOpAadmleorDsen”sscOCddeiTlodaÑtóaylee.ie(pdoOaeoessIiSblse)ElreOÓnilsa.eoeplmrimtee)pmcNrpetNS.eer.tIogrrrnapireoiapeÓaóCen.onssoacoddimnnoSrdettoiE(ssseaeeeo5aGiNoar-,”cii..NnscOciFaedoiDoóNCdarInaydBSsnwRSRREolsD–HKV—“.IiqpteoreUPXEUIIhIOorSSSursteteeHRPRRaRoTniiKtKKapdgryoLroAEFoNemcsDnulcO125463A789OtOYOgd.hSeoIcIl………suNeCSaSFFFdphGwiCCMmpTdàTpdsFs”BPlAACADFENlAsNScipnceNpddt–attseCemJOEIoeeeo.a’eoiireooe.IgI.c.pOie.sooeo.aaoUrsvpeiixeeeltUmNaNansuutpntsS’NHturnnnhmmjrslpreauaisnhtsrLMLCAMCeioMoleUcolèNNeyritrnvteiupprRnneJptJ”azoiteielIAnpntpasanndrcifdnsozooet.aRCebbéAeemdorcaeeàass.ryrUEsRzieiYptcêatli.eéuuzKionmsnRttuntmUhEeuodinlnlccplesresAoztiottee’qelCitwssptpReOeeeeenoeatttlascVlnrtiTosIrdIiGrnot’nL”eeiueraeuehuel.NCsaozluazeuuntAcSOztahtTaYouôegeOàpnsEzzettizusdOizzttgutrEyfeendnltbzeIsuesilnKetltleIhdi.fNl–eb.Sj’l’eeaaCtlQaelleltbMuOalrléliilolisllddFeioea.Lrazadmten’nPeaseerleyrE”SpstuFreoo.etzmrteidAAmi.aeA.ttrFeeNH..nnasrtlàseebmEmaybusldeUseSLre.éeUàgu’ouN.rtsrUBepiaalacdtuoltdaérrT’rOegg(oRylnplcTUaiia,oéAroraUOapchagnethem.bpitgEgsdesAaiSuucéisIcnteavdzaTtinqeSiauEetLotIsir.aensa’ueptenpjRdhnetDroCeE.êorodeuopu,ItLttvnMtegtdOrtlStzu:iere,ie,coDunàne’meeemtumnégfpropKealeufne.rDzaASDr–leuyeceumuNsrreettqeetnlltSepeOdTeEpiei ,putErOrElrrpprmstletueucaéléemStIesofdrimtDpesOrtddMerpLlteou- euevirnnelebedDeooéd.p’eeparaueoNmuouartOFMltazfsineisioemutento5lduotsrclrltdseubsletcEPemAeoPsltiaeuEamrjiruup’rauSlpa–TSReieoRnioeosrrcADnRddpPlRdLLNLELLohicErisromGnéflEcotnteqûeroreeuietcalesrlsniprdnUUioee’iaIoIAEAAAtuusniROAeéatlidEIIAUhUoieetEnldSuErauneDnnlnpqeiexrlAnEStosdcepiesrvélalUtu,adPRnpêSnA.nnnamsUéanSbTeSrisUSezcciuilr.uQeStzmoiPPPuSrdSQt’moLslppenusoMetrdTsamuteEedo.oIocreeuihFs’ieCrt.tuiSqraéCioGOOMTcloOIRsOuUngciuGCudaeeEspejseEeoUauasznqAhpaeardStRaaeMlllvascpsAAluAeisSpeadeeueruieessiAUOrr’uNEEcsauIuRHerneOesEteCseiTuoudlrniFiGsstUzUuMter.neteeccuERassTsdtRhéissaeSulrsnoeeEbeorsrPTAuriOuepdlo.xeaEINnt.DtttolnSDÉlnees.rDN)iDtoeCuGnreueoluzaonlniIlmens”eIaSsarR–iUAate’nedLiSEÓtpReeEPoro’dOpurEnrrqsasusl.eEEid.eféEDniIldEnvAmVelercrtpEuDAReEnfoIr’oeldeeSdu””tNipgeipndFuppiEEnCaeeAeote–aXntiLpTOrpOoEilnBpSPSesuueuEento’edas’aDEgpeaFaDamLeedùsenlueNSeoHtirPle.eXi–EnyFPFgáIELretnntt’auaOssSsdu”ttVègabrpEEnàtprOtsaiCTeSENeartALtu.dlnPrFFortétosIEiodNernil.urleiditSmsaeeEouevirSdXepngnotrOsAnNûeuOéUeee2U””ASuLuulIii.SeêM’sarnEdraze.o.eRtetepTse’lliBànedsTtaLpUrayOestoaGSDtpPstpdfàSadts.une.–TsuliUpOeueandoAurLIugetduIssdocrpaLuSIbestElSeeUUERnrSuend3EenéiOraeeoéEusot”LrLSgpercrIinsaeuáeeOpSsIbSANnNorReiSscAtaeersiùaPsVEOrdusNsumiaplccarérntidrOlAaentriA.StNuleTooynlECel8asxRûéi(ecET–amieoazegaCNdleiniTnNsdgdlUiris–uaelrnrE.fl”SneerFmlmI,eapnnEetrmPe.d9xoiIzieSàA.teÓoR”tsCsuooRguOdmdèS–clt .ioOcuoaitd0apyScEncluetscqomqtleaLielErEeemcONUNhroaSLneI- rrea.0rupialeeôosNcSRuiauriuohIemoSlOcr-a-nasueeast- UeeENlnlerpnUélérprlseOIiicfcc”al9pSes,sueslqes.ueeOur.OrtNèiseoeeéNiavqite9s.l .ilaNdtdgerOiuceeeaeoscesmU-crNetnjlutETe0mtneoeopieéaeercgnsh- iuadenscreer.lEpstceunueoiielszsé0iAémteerrre..s.uecugasuroestlneseirunlltdneiez)-rt

Detergent Valve
Access Panel
Detergent Line

High Pressure Hose

Detergent Bucket
(not included)

Pump — Delivers a specific gpm to the high pressure nozzle which develops pressure. (Not Shown)
Spray Gun — Controls the application of water and detergent onto cleaning surface with trigger device. Includes safety latch.
Detergent Valve– Allows you to siphon and mix detergents.
Wand — Must be connected to the spray gun.
High Pressure Hose — Connect one end to water pump high pressure discharge nipple and the other end to spray gun.

Rupture Disk — Secondary pressure release in the unlikely event the unloader valve fails. (Not Shown)
Unloader Valve — Safety device which, when the spray gun closes, prevents over pressurization. (Not Shown)
NOTE: If trigger on spray gun is released for more than 3 minutes, water will leak from the pump protector. Warm water will discharge from pump protector onto floor. This system prevents internal pump damage.

Landa ENG Operator’s 9.801-511.0 – F

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Operations

Installation Eng 4-2000, 4-2200, 4-3000, 5-2300, 5-3000

12.00″

24.50″

Piping to Outside

Customer Supplied Draft
Diverter

24.00″

19.50″ Dia.

4.00″

36.68″

Exhaust Out 10″ Dia.

36.00″ Minimum

48.54″ 21.30″
12

Control Panel
49.00″ Floor Mounting Dimensions

3/4″ Gas Inlet

24.87″

High Pressure Out 3/8″ QC Nipple
Inlet Electrical Connection
Water In 3/4″ GHF

3.70″

24.00″
NOTE: Draft diverter should be installed 3 ft. above exhaust outlet.

20.61″

20.61″

Landa ENG Operator’s 9.801-511.0 – F

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Installation Eng 6-3200, 8-3200, 10-3000

17.33″

34.79″

17.36″

Operations
Piping to Outside
Customer Supplied Draft
Diverter
19.50″ Dia
36″ Minimum
Exhaust Out 12″ Dia.

61.00″ 31.77″

Control Panel
64.00″ Floor Mounting Dimensions

1″ Gas Inlet
26.18″

High Pressure Out 3/8″ QC Nipple
Inlet Electrical Connection
Water In 3/4″ GHF

3.64″
NOTE: Draft diverter should be installed 3 ft. above exhaust outlet.

26.91″

26.91″

Landa ENG Operator’s 9.801-511.0 – F

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Operations

Installation
Place machine in a convenient location providing ample support, drainage and room for maintenance.
Location
The location should protect machine from damaging environmental conditions, such as wind, rain and freezing.
1. The machine should be run on a level surface where it is not readily influenced by outside sources such as strong winds, freezing temperatures, rain, etc. The machine should be located considering accessibility for the replacing of components and the refilling of detergents, adjustments and maintenance. Normal precautions should be taken by the operator of the machine to prevent excess moisture from reaching the machine.
2. It is recommended that a partition be made between 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 electrical controls will reduce the machine’s life and may cause electrical shorts.
3. During installation of the machine, beware of poorly ventilated locations or areas where exhaust fans may cause an insufficient supply of oxygen. Sufficient combustion can only be obtained when there is a sufficient supply of oxygen available for the amount of fuel being burned. If it is necessary to install a machine in a poorly ventilated area, outside fresh air may have to be piped to the burner and a fan installed to bring the air into the area.
4. Do not locate near any combustible material. Keep all flammable material at least 20 feet away.
Allow enough space for servicing the machine. Local code will require certain distances from floor and walls. (Two feet away should be adequate).
WARNING: Avoid small areas or near exhaust fans.
AVERTISSEMENT: Éviter les petites superficies ou les surfaces à proximité des ventilateurs d’extraction.
Gas Codes
Confer with local gas company and with proper municipal officials regarding any specific code or regulations governing the installation. The installation must conform to local codes (NFPA 54).

Electrical
The machine, when installed, must be electrically grounded in accordance to local codes. Check for proper power supply using a volt meter; check the serial plate for the correct requirements.
Gas Piping
This machine shall be rigidly connected to the gas piping outlet and equipped with external manual shutoff valves adjacent to such machine. All gas piping shall be approved and installed in accordance with the Uniform Mechanical Code.
Install a gas union in the gas line adjacent to and upstream from the control manifold and downstream from the manual main shut-off valve. A 1/8″ NPT plugged tapping accessible for test gauge connection shall be installed immediately upstream of the gas supply connection for the purpose of determining the gas supply pressure to the burner, and to prevent damage to gas valve.
If a manual gas shut off valve is not in the gas supply line within six feet of the machine and in an accessible location, one shall be installed.
Union Location

Drop

Union

Manual Shut-Off
Valve

1/8″ NPT Plugged Pressure Gauge Port Location
Floor Level
Union Connection
The following pipe sizes are just recommendations. Always consult a local plumber and venting contractor for local codes and regulations during installation.
Pipe Sizing Chart for Natural Gas
The following chart is based on gas pressure in the range 0-0.5 psi, specific gravity of 0.6 and pressure loss of 0.5″ W.C. Numbers are for straight schedule 40 pipe; fittings further reduce capacity. For example, in 1″ size, an elbow is equivalent to about 2.6 feet of pipe and a tee is equivalent to about 5.2 feet of pipe.

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Landa ENG Operator’s 9.801-511.0 – F

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Operations

Maximum capacity of pipe in cubic feet/hr of natural gas (Multiply values by 1000 to get nominal BTU/hr capacity).
LP-Gas (Liquid Petroleum Gas or Propane)
LP-gas is gas compressed into liquid form for easy transportation and storage. It is also known as propane or bottle gas. (Propane tanks are not supplied with this equipment.)

Length of

Iron Pipe Size

Pipe (ft.) 3/4″ 1″ 1 -1/4″ 1- 1/2″ 2″

10

360 680 1400 2100 3950

20

250 465 950 1460 2750

30

200 375 770 1180 2200

40

170 320 660 990 1900

50

151 285 580 900 1680

60

138 260 530 810 1520

70

125 240 490 750 1400

80

118 220 460 690 1300

90

110 205 430 650 1220

100 103 195 400 620 1150

150

84 160 325 500 950

200

72 135 280 430 800

LP-gas is flammable, is always contained under pressure and the liquid can freeze skin. Therefore, in the interest of safety, it is important to understand the basic facts about LP-gas and LP-gas containers.

Federal DOT (Department of Transportation) regulations require periodic inspections and re-qualifications of cylinders. DO NOT USE damaged or rusted containers.

DO NOT store LP-gas containers indoors or in enclosed areas. Do not expose LP- gas container to heat. Always store with service valve closed and plugged as required.

CAUTION: Use LP-gas containers in proper position.

ATTENTION: Utiliser des contenants de gaz de pétrole liquéfié en position appropriée.

Most LP-gas pressure washer heaters are designed to operate on LP-gas vapor only. Therefore, all LP-gas containers designed for vapor service must be transported, installed and used in the proper position. Do not transport, install or use a vertical cylinder in a horizontal or upside down position. Proper care must be taken to

position a horizontal container in the correct position for vapor withdrawal. Liquid LP-gas could enter the system designed for vapor only, possibly creating a hazardous condition.
Always use a POL plug installed on a POL valve or a dust cap on an ACME/Type 1 valve when transporting or storing disconnected containers (full or empty). Check for leaks after connecting. Apply approved leak detector solution to connection, turn off all burners and pilots and open service valve. Leaks will be detected by the growth of bubbles. If bubbles grow, tighten or repair the connection as needed. Repeat leak test until problem is corrected.
Check all tank and the line connections periodically to be sure they are tight. When testing for leaks, use approved leak detector solution — not matches.
Improved Regulation: The second stage regulator receives a relatively uniform pressure from the first stage regulator. This helps the second stage regulator to maintain appliance pressure at a nearly constant 11″ W.C.
Filling the LP-Gas Container
Only qualified persons should fill your LP-gas containers.
CAUTION: Overfilling is hazardous!
ATTENTION: Le remplissage excessif est dangereux!
DO NOT allow your LP-gas container to be overfilled. Stop filling when liquid appears at the fixed level gauge. Bleed off excess propane in a safe area. Most LP-gas containers are equipped with a fixed liquid level gauge which contacts the liquid level at 80% of container capacity, allowing 20% for expansion. LP-gas containers not equipped with a fixed liquid level gauge can only be filled by weight.
In cold climates, in order to keep vaporization of LP-gas at the highest level, keep the fuel levels above 50%.
Propane Tank Disposal
Propane tanks present a real danger in the waste stream, so it is essential to properly dispose of old tanks so they do not injure you or sanitation workers. The best way to dispose of unused propane tanks is by calling a propane company to pick it up. Propane tanks are not picked up by garbage collectors, and improper disposal is illegal in some areas. If a propane tank is unfit for service, one should contact a propane company.

Landa ENG Operator’s 9.801-511.0 – F

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Operations

Room Vents for Combustion and Ventilation Air
Properly sized vents are vital for the safe and efficient operation of a pressure washer installed in a confined space. When combustion and ventilation air are supplied from inside the building, each opening must have an area of one square inch for every 1,000 BTUH input. When combustion air is supplied from the outside, each opening must have an area of one square inch for every 2,000 BTUH for horizontal ducts and one square inch for every 4,000 BTUH for vertical ducts (refer to NFPA 54).
NOTE: Air vents for combustion and ventilation and exhaust flue sizing must conform to methods outlined in current American Standard (ANSI-Z223.1), National Fuel Gas Code of National Standard of Canada CSA-149.1 and CSA-149.2 “Installation Code for Gas Burner Appliances”.

have to be built of such great length that they come apart at their joints under their own weight. These should be screwed together at the joints with sheet metal screws, usually three per joint. If the inspector indicates that the vent is too close to combustibles, it may be necessary to chisel away some of the combustible or route the vent pipe around the combustible. The cross- sectional area of any flue shall not be less that the cross-sectional area of the flue vent connection outlet of machine.
Ventilation

Exhaust Stack
The purpose of venting a gas-fired pressure washer is to completely remove all products of combustion and to vent gasses to the outside air without condensation in the vent or spillage at the draft hood (except in cases of downdraft or poor stack conditions). Always use strong, gas-tight, insulated pipe.
The design of this pressure washer depends on natural draft (heat induced) to pull combustion gas out of the combustion chamber. The design of the exhaust stack can have a significant impact on the proper operation of the burner and coil.
During vent installation, avoid sharp turns, long horizontal runs and improper pitches. Maintain proper support of vent connectors and joints, observe clearances from all combustibles and top the vent outlet with an approved cap.
Type “B”, due to its temperature rating, can only be used with natural draft pressure washers. A “B” vent is designed for exhaust temperatures not to exceed 470°F (245°C).
All venting installations must conform to local codes. In the absence of local codes, refer to “National Fuel Gas Code” NFPA 54 and be constructed of materials approved by the Uniform Building Code.
Vents penetrating ceilings or walls should be doublewall approved appliance vents and should be one to two inches from combustibles. Vents passing through enclosed spaces and vents exposed to the weather should also be the double- wall type. Sometimes vents

Illustration showing air openings necessary to supply air for combustion when installed
in an enclosed room.
The pressure washer includes a collar that will mate with standard HVAC ducting. The user will be responsible for installation of an exhaust stack. The exhaust stack should include a Draft Diverter/Inducer, Damper, Sampling Port and Rain Cap. An adapter can be installed between the collar and stack to adjust the diameter from 10″ to 8″ or 12″ to 10″.

Size the stack according to the following (see also applicable local and national standards regarding installation of gas-fired appliances):

· 3.5 to 4.4 gpm · 4.5 to 5.5 gpm · 6.3 gpm · 8 ­ 10 gpm

10″ Collar 10″ Collar 12″ Collar 12″ Collar

8″ Stack 10″ Stack 10″ Stack 12″ Stack

Draft Diverter Required
8.717-728.0 8″ 9.801-040.0 10″ 8.717-730.0 12″
Draft Diverter/Hood The draft required to vent combustion gases is created by the heat inside the pressure washer coil. A draft diverter helps improve draft into the stack without pulling more air through the combustion box and decreasing combustion efficiency.

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Landa ENG Operator’s 9.801-511.0 – F

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Operations

The draft diverter can also help prevent back drafting that can inhibit combustion. The draft diverter should be installed a minimum of 36″ above the flue collar.
Power Vent (Draft Inducer) If this machine is going to be installed on a 90° or extended exhaust vent run length which may restrict air flow it is recommended that a contractor install a power vent. When a contractor has found it impossible to vent straight through the 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 licensed contractor who can calculate size, operation connections and associated dampeners. Since we are a manufacturer and not a licensed contractor and as such we are unable to make recommendations for suitable make and model of power vents and compliance with local building codes.
Damper An exhaust stack can reduce thermal efficiency by drawing in too much combustion air. This can be controlled by adding a damper just below the draft diverter. 8.753-473.0 – 8″ Damper, 8.753-474.0 10″ Damper, 8.753-418.0 – 12″ Damper.
NOTE: Closing the damper can create high levels of CO in the exhaust. Adjustments to the damper should only be performed by a trained technician using a flue gas analyzer. If an analyzer is not used the damper should be set in the fully open position.
Sampling Port A port for sampling flue gases and measuring the flue gas temperature should be placed 18″ above the flue collar. The port should be covered when sampling is not being performed. The size of the port should be only slightly larger than the probe for the flue gas analyzer.
Rain Cap A rain cap should be installed on top of the stack to prevent rain water, leaves and debris from entering the stack. Your installer may also recommend specialty caps for high wind areas or cold weather zones to help prevent back drafting. 8.717-731.0 – 10″ Raincap, 8.717-732.0 – 12″ Raincap
Water Source
The water source for the machine should be supplied by a 5/8″ I.D. garden hose with a city water pressure of not less than 30 PSI. If the water supply is inadequate, or if the garden hose is kinked, the machine will run very rough and the burner will not fire.
Water Connection
Connect the high pressure hose by pulling the coupler collar back and then inserting it onto the discharge nipple. Secure it by pushing the collar forward.

Attach the wand into the spray gun using teflon tape on the pipe threads to avoid leaks.
Inspection and Testing Gas Piping
The building structure should not be weakened by installing the gas piping. The piping should not be supported by other piping, but should be firmly supported with gas hooks, straps, bands or hangers. Butt or lap welded pipe should not be run through or in an air duct or clothes chute.
Before turning gas under pressure into piping, all openings from which gas can escape should be closed. Immediately after turning on gas, the system should be checked for leaks. This can be done by watching the 1/2 cubic foot test dial for 5 minutes for any movement or by soaping each pipe connection and watching for bubbles. If a leak is found, make the necessary repairs and repeat the above test.
Defective pipes or fittings should be replaced and not repaired. Never use a flame or fire in any form to locate gas leaks — use a soap solution.
After the piping and meter have been checked completely, purge the system of air. DO NOT bleed the air inside an enclosed room.
During pressure testing of the system at test pressures in excess of 1/2 PSIG, the pressure washer and its individual shut-off valve must be disconnected from gas supply piping system or damage to the gas valve will occur.
Gas Pressure
The incoming gas pressure must be a minimum of 9.0 wc-in and must not exceed 13.8 wc-in or ½ psig to the control valve. Line pressure above ½ psig must be regulated prior to the machine. The ideal supply pressure is 13.0-13.5 wc-in. If the required BTU input can not be achieved consult the factory for instructions regarding changes to the nozzle orifice size and an appropriate manifold setting.
NOTE: Any changes to the burner and manifold pressure setting should only be performed by a trained technician and adjusted using a flue gas analyzer. The manifold pressure has been preset at the factory according to the table below for optimum operation at sea-level. The manifold pressure and BTU input will be listed on the specification plate for the machine.

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Operations

For Tech Tip Instructions
Combustion efficiency in a natural draft pressure washer is significantly influenced 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 stack sizes and gas manifold pressure settings. These sizes are critical for achieving proper combustion and acceptable emissions.

NG

LP

Model Collar Stack wc-in kBTU-in wc-in kBTU-in 3.5@2000 10″ 8″ 3.6 310 7.8 310

3.9@3000 10″ 8″ 3.4 354 7.4 354 4@2200 10″ 8″ 5.1 364 11.2 364

4.8@3000 10″ 10″ 4.2 415 9.1 415

5.0@2300 10″ 10″ 4.7 437 9.5 439

6.3@3200 12″ 10″ 4.3 507 7.4 507

8@3200 12″ 12″ 3.1 658 7.0 658

9.5@3000 12″ 12″ 5.4 816 10.0 775

Testing has shown that simply adding a 36″ stack extension to the flue adapter on top of the pressure washer can reduce the outlet temperature by 5-10°F.

This occurs by inducing a higher pressure differential at the exit of the coil and increasing the flow of air into the combustion process and through the stack. Most or all of the lost outlet temperature can be recovered by installing and adjusting a damper in the stack. However this adjustment must only be performed by a trained technician using a combustion analyzer. The analyzer must determine percent oxygen and/or percent excess air as a minimum.

The damper should be installed 24-36″ above the flue adapter. The pressure washer can be operated safely with the damper fully open but with the lower outlet temperature. If the damper is closed too far there will not be enough oxygen to burn all of the fuel. This will cause higher and potentially dangerous levels of CO in the flue gas emissions.

To adjust the damper for proper combustion and efficiency perform the following:

1. If there is no sample port for the analyzer probe, drill a hole slightly larger than the combustion analyzer probe through the exhaust stack at a point about 18″ above the flue adapter.

2. Insert the probe of the combustion analyzer so that the tip is at the center of the stack.

3. Open the damper to the fully open position.

4. Start the pressure washer and allow it to heat up for at least 20 minutes before making any adjustments.
5. Note the values for % Excess Air and/or % Oxygen.
6. Close the damper in small increments until % Excess Air is between 20-30% and/or % Oxygen is 4-5%.
This process can also be used when turning down the firing rate for high altitude installations above 2000 ft.
1. Adjust the gas pressure down 4% for every 1000 ft of elevation.
Example: Recommended firing rate for a 4.8@3000 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.
A manometer capable of reading to at least the nearest 0.1 wc-in will be required for this adjustment.
2. Follow steps 1-6 above to optimize the outlet temperature 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. Example: Recommended firing rate for a 4.8@3000 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 technician. A manometer capable of reading to the nearest 0.1 wc-in will be required for this adjustment.
In Canada, certification for installation at altitudes over 4500 feet is the jurisdiction of local authorities.
Gas Valve Replacement
If you replace your gas valve the manifold pressure for the new valve will need to be adjusted to match the specification plate for the machine. Follow the installation and adjustment instructions provided with your replacement valve. A manometer capable of reading to the nearest 0.1 wc-in will be required for this adjustment
CAUTION: All gas conversion must be done by a qualified service person in accordance with these instructions and in compliance with all codes and requirements. In Canada, gas conversion shall be carried out in accordance with requirements of the Provincial Authorities having jurisdiction and in accordance with the requirements of the CAN/GGAB149.1 and .2 installation code.

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Landa ENG Operator’s 9.801-511.0 – F

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Operations

ATTENTION: Toutes les conversions au gaz doivent être effectuées par un technicien qualifié conformément à ces instructions et en conformité avec tous les codes et toutes les exigences. Au Canada, la conversion au gaz doit être effectuée conformément aux exigences des autorités provinciales compétentes et conformément aux exigences du code d’installation CAN/GGA-B149.1 et .2. 2
START-UP
WARNING: Read and follow instructions carefully when installing or servicing machine. Failure to do so may result in damage to property or personal injury.
AVERTISSEMENT: Lire attentivement les directives avant d’installer ou d’effectuer l’entretien de la machine. Le non-respect de cette consigne pourrait causer des dommages matériels ou des blessures corporelles
1. Installation or servicing of gas appliances and controls must only be performed by qualified personnel. After installation or servicing, test the manual valve, operating valves, pressure regulation, and automatic shut-off valve for proper operation.
2. Install in a suitable dry location. Machine must be located in an area properly protected from weather.
3. Shut off gas and electricity before starting installation or service. Turn back on to test or operate.
4. DO NOT connect machine before pressure testing the gas piping. Damage to gas valve may result. (9″ – 14″ W.C.P. or 1/2 PSIG)
5. DO NOT insert any object other than suitable pipe or tubing in the inlet or outlet of the gas valve. Internal damage may occur and result in a hazardous condition.
6. DO NOT short the gas valve terminals.
7. DO NOT grip gas valve body with a pipe wrench or vise. Damage may result causing gas leakage. Use inlet or outlet bosses or a special body wrench.
8. DO NOT allow any flame to impinge on the regulator vent tubing if supplied. It may clog and cause gas valve malfunction.
9. DO NOT use the gas cock to adjust gas flow.
10. If main burner fails to shut off, turn off gas supply.
11. Keep all combustible materials away from gas appliances. DO NOT allow lint or dust to collect in burner area.
12. Dials must only be operated by hand. Never use pliers, wrenches or other tools to turn dials.

13. Leak test with a soap solution after installation or service with the main burner on. Coat pipe and tubing joints, gaskets, etc.
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
“FOR YOUR SAFETY “WHAT TO DO IF YOU SMELL GAS” · Do not try to light any appliance. · Do not touch any electrical switch, do not use any phone in your building. · Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. · If you cannot reach your supplier, call the fire dept.
C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it; call a qualified service technician. Forced or attempted repair may result in a fire or explosion. D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

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Operations
Check List Before Starting
CAUTION! If “NO” has been checked on any of the following sixteen questions, do not operate this machine.
ATTENTION: Si la réponse à l’une des questions cidessus est « NON », ne pas utiliser la machine
YES NO
Has gas supply been inspected by an authorized 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 according to specifications and serial plate notation?
Is the machine electrically grounded?
Is there ample water supply?
Have all flammable liquids or gases been removed from installation location?
Is there adequate gas supply 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 the optional LP
gas regulator assembly 9.802-633.0?
Is the machine properly vented to allow adequate air flow?
Are the propane tanks large enough, according to rating to prevent freezing?
Have gas lines been checked for gas leaks?
Have gas lines been checked with local codes?
Have all operators using this machine been instructed properly and have they read the manual?
Has the machine been installed according to operator’s manual instructions?

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Landa ENG Operator’s 9.801-511.0 – F

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Assembly Instructions
Safety Switch

Pump Discharge
Fitting

Operations
Cold Water Source

High Pressure Hose

Spray Gun

STEP 1: Attach the high pressure hose to the spray gun using teflon tape on hose threads. Move safety latch into locked position to prevent

High Pressure
Hose
STEP 2: Connect the high pressure hose to the discharge fitting. Push coupler collar forward until secure.

Garden Hose
STEP 3: Connect garden hose to the cold water source.

Pressure Nozzle

Coupler Collar

Garden Hose

Pump 9W80a1t5e1r00In-8let

spray gun trigger from activating.
STEP 4: Connect the garden hose to pump water inlet. Inspect inlets.
CAUTION: Do not run the pump without water or pump damage will result.
ATTENTION: Ne pas faire fonctionner la pompe sans eau pour éviter d’endommager la pompe.

STEP 5: Before installing nozzle, turn on the water supply and run machine allowing water to run from the end of the wand until clear. Turn off machine.

Wand Coupler
STEP 6: Pull the spring-loaded collar of the wand coupler back to insert pressure nozzle. Release the coupler collar and push the nozzle until the collar clicks. Pull the nozzle to make sure it is seated properly.

Landa ENG Operator’s 9.801-511.0 – F

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Operations Operating Instructions

16

14

0

12

2

86
4 10

STEP 1: Have an electrician connect power supply into electrical box according to information shown on the serial plate.
Detergent Valve

OFF

ON

STEP 2: Turn on main gas supply and depress and turn control knob to the `ON’ position.

16

14

0

12

2

86
4 10

TATCAHC/HH/OHUORUR

Burner

Switch

TATCAHC/HH/OHUORUR
Burner Switch

INSTRUCCIONES DE OPERACION LNEAADEELCMUAADNAUAPLUEDDEruEOpOPtoCEArRAeasALSuACIeOnSInÓNotPnloNAaRamRApOdaNLooPcEeTsIopEdSiEcroDiISriaOróiAenDNCnDnGtEEeo”tEFeOSrUSlrCoFicS.PesIoFAEnnd”pRRteee(rSSAocbdOEctPeael.NeAdardALPGeociALémioAnaErpOiidDcSeltPiaiinOdeaOEdtarr)ooRrs.DaasreAAddTCdÑyeeieIeOÓplmrrSNtorepoano

Pump Switch

STEP 3: Push pump ON’ switch, or turn to pump position and pull the trigger on the spray gun allowing cold water to flow. To activate the gas control valve for hot water, push the burner switch to theON’ position and pull the trigger on the spray gun.

STEP 4: To apply detergent open the detergent valve counterclockwise making sure that the detergent pick-up tube is in the detergent solution and not sucking air.

Pump

INSTRUCCIONES DE OPERACION LNEAADEELCMUAADNAUAPLUEDDEruEOpOPtoCEArRAeasALSuACIeOnSInÓNotPnloNAaRamRApOdaNLooPcEeTsIopEdSiEcroDiISriaOróiAenDNCnDnGtEEeo”tEFeOSrUSlrCoFicS.PesIoFAEnnd”pRRteee(rSSAocbdOEctPeael.NeAdardALPGeociALémioAnaErpOiidDcSeltPiaiinOdeaOEdtarr)ooRrs.DaasreAAddTCdÑyeeiIeeOÓplmrrSNtorepoano

Switch

STEP 5: To Stop: Turn the burner switch off and place the detergent pick-up tube into fresh water. Open the detergent valve and trigger spray gun allowing detergent lines to be flushed and the burner to cool. Otherwise, coil damage will result. After water has cooled, turn pump switch to OFF position. If the machine is going to be off for an extended period of time, put the manual valve on the gas valve into the OFF position.

Turn the water off. Protect from freezing.

NOTE: Do not allow acids, caustic or abrasive fluids to pass through the pump.
NOTE: Never run pump dry or leave spray gun closed longer than 3 minutes.

High Pressure
Nozzle
22

Wand Trigger

NOTE: High Pressure Nozzle Must Be Attached At End Of Wand To Obtain High Pressure. To Apply Soap, See Applying Detergent & General Operating Techniques.

Landa ENG Operator’s 9.801-511.0 – F

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Operations

Applying Detergent & General Operating Techniques

WARNING

WARNING: Some detergents may be harmful if inhaled or ingested, causing severe nausea, fainting or poisoning. The harmful elements may cause property damage or severe injury.

AVERTISSEMENT: Certains détergents peuvent être dangereux s’ils sont inhalés ou ingérés, provoquant de fortes nausées, des évanouissements et l’empoisonnement. Les éléments dangereux peuvent causer des dommages à la propriété ou des blessures graves.

STEP 1: Use detergent designed specifically for pressure washers. Household detergents could damage the pump. Prepare detergent solution as required by the manufacturer. Fill a container with pressure washer detergent. Place the filter end of detergent suction tube into the detergent container.

STEP 2: Open detergent valve counterclockwise until you obtain desired mixture. Detergent will mix with the high pressure water stream.

Detergent Valve

STEP 3: With the motor running, pull trigger to operate machine. Liquid detergent is drawn into the machine and mixed with water. Apply detergent to work area. Do not allow detergent to dry on surface.
IMPORTANT: You must flush the detergent from your pressure washer after each use by placing the suction tube into a bucket of clean water, then run the pressure washer for 2 minutes.
NOTE: If you remove detergent siphon tube from container or allow container to empty, it will cause low pressure by sucking air, which will damage the pump.

Thermal Pump Protection
If you run the engine for 3-5 minutes without pressing the trigger on the spray gun, circulating water in the pump can reach high temperatures. When the water reaches this temperature, the pump protector engages and cools the pump by discharging the warm water onto the ground. This thermal device prevents internal damage to the pump.
Cleaning Tips
Pre-rinse cleaning surface with fresh water. Place detergent suction tube directly into cleaning solution and apply to surface. For best results, limit your work area to sections approximately 6 feet square and always apply detergent from bottom to top. Allow detergent to remain on surface 1-3 minutes. Do not allow detergent to dry on surface. If surface appears to be drying, simply wet down surface with fresh water. If needed, use brush to remove stubborn dirt. Rinse at high pressure from top to bottom in an even sweeping motion keeping the spray nozzle approximately 1 foot from cleaning surface. Use overlapping strokes as you clean and rinse any surface. For best surface cleaning action spray at a slight angle.
Recommendations:
· Before cleaning any surface, an inconspicuous area should be cleaned to test spray pattern and distance for maximum cleaning results.
· If painted surfaces are peeling or chipping, use extreme caution as pressure washer may remove the loose paint from the surface.
· Keep the spray nozzle a safe distance from the surface you plan to clean. High pressure wash a small area, then check the surface for damage. If no damage is found, continue to pressure washing.
CAUTION – Never use:
· Bleach, chlorine products and other corrosive chemicals
· Liquids containing solvents (i.e., paint thinner, gasoline, oils)
· Tri-sodium phosphate products · Ammonia products or acid-based products
ATTENTION: Ne jamais utiliser :
· Eau de Javel, produits à base de chlore et autres produits chimiques corrosifs
· Liquides contenant des solvants (c.-à-d. diluant à peinture, essence, huiles, etc.)
· Produits à base de tripolyphosphate de sodium · Ammoniac ou produits à base d’acide
These chemicals will harm the machine and will damage the surface being cleaned.
Rinsing
Turn detergent valve clockwise to close. Operate pressure washer and allow a few seconds for the detergent to clear.

Landa ENG Operator’s 9.801-511.0 – F

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Operations Shutting Down And Clean Up
Burner Switch
RUCCEIROACONIÓNENARSAONLPETDIESE
STEP 1: Turn the burner switch to the `OFF’ position.

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,uetcrEééEapemtofluulStrddesprrmdiopDueevsruneeeblto- enielaueeomaoté.petzarpsiiuoalemFntfudscrloutsubell5otomloltitaeesceriuee’niesrurriEpmuilToSa–ReepaSRroufntdlLPEDARpdRdLLNLcLonheûresicremcncsalsopnqornitleuélerdrUUi’teeoaoIIAAlAAErduustineOAaqleEhIIAdieoeietUeeuEvSnanulpte,rxldnASEd.isprséallUeuaczluenR.PpSnmnamoUnésarunSbir’UsScrlieuuSQzMSiPPPdeQSmer.oeLpsenesosrdsuuamerdEcuoooIFhitCugit.ptiiSqoaGcOzTOIlROrsnOUcuGCadeejseseelUosahuAqnpspeaaclStdRpaaeauMevaus’AAieuSdeeeustsiOirrEluNEcoseRaIHuirueOentzECeesneteuTdnFGssueltr.eeUcReuassEsrpuhsisanSsuor.bEetrrTeoPAeOdulo.xeIENnuDtueelDnznlnsee).lN”rDDeoCnGluoainleIsImeasSaR–OrUpartrrneS’LedptÓEenedr’ouEsuss.laEiEderr.éEIlEndDvArm’dce”tpEDAdEFueoifoeleeeSdNtpegOpnppiplnnEaeCeo–euXniTopo’ErapBpFSPueSssEeuednesaDogEetaa’madùneuFSyHinPetrleeXs.–“nbPargEáIELntsatae’usduaVprègEn.rptOtFCiatrSiNEerLtutArunirPlootIosouEirndNegrtlemiteeûsaEev2i”SdnpnXourOiAnNs.OeéeneUrASuL.uoileêsSMealrEadztRetspTepelià’edàsdaLn.UsryaOtGoSDaptspddafSsP.–euTlptiuOUuoanruAuegudIsesdropaucS3IeElSeUEU”rRneSdnéeniOaoreésEuotLuSOLergbisncáeeSpsIsAsNonNmcrRitAaeesrùPariEVdOurNsuplaccarénNutydinealûOtA.TeoolnllCEe8xaRieTEa–ceeomaszgrCaNlenidNsnl”diiu–ralE.refSnrmtel.mFIer,aEn”pntmuPi9.oxezAèeSRÓotCssooguOumdS–c .tliotdoyta0apScnEmleutscmLoqieeaLrrlEeeOUNrhSN-rn .0erIeuiapleôcosSaaRisurieoumIeloec-Oan-uetU- eEeNl”nllrnép,rlsesIOiifclcc9.puSseseslq.eeOvurerèlNtisteeiati9e.s .lidaiederguONeetaeom-sctNejnlT0eeieonoieprceeégnrsl- duanscer.éEitinueouesiszs0eAteerr.r..gssleuzr

Detergent Tube

Fresh Water

STEP 2: Place the detergent tube in fresh water and open the detergent valve and spray gun, allowing the detergent lines to be flushed and the burner to cool. Otherwise coil damage may occur.

Pump Switch
RUCCEIROACONIÓNENARSAONLPETDIESE
STEP 3: After water has cooled, push or turn pump switch to OFF’ position. If the machine will be turned off for an extended period of time, put the gas cock on the gas valve in theOFF’ position.

STEP 4: Turn off water.

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Landa ENG Operator’s 9.801-511.0 – F

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Operations

Storage
CAUTION: Always store your pressure washer in a location where the temperature will not fall below 32°F (0°C). The pump in this machine is susceptible to permanent damage if frozen. FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
ATTENTION: Toujours entreposer la laveuse à pression dans un endroit où la température ne sera pas inférieure à 32°C (0 °F). La pompe sur cette machine est susceptible de subir des dommages si elle est exposée au gel. LES DOMMAGES DUS AU GEL NE SONT PAS COUVERTS PAR LA GARANTIE.
1. Stop the pressure washer, squeeze spray gun trigger to release pressure.
2. Detach water supply hose and high pressure hose.
3. Turn on the machine for a few seconds, until remaining water exits. Turn pump off immediately.
4. Do not allow high pressure hose to become kinked.
5. Store the machine and accessories in a room which does not reach freezing temperatures.

CAUTION: Failure to follow the above directions will result in damage to your pressure washer.
ATTENTION: Le non-respect des directives ci-dessus entraînera des dommages à la laveuse à pression
After Extended Storage
CAUTION: Prior to restarting, thaw out any possible ice from pressure washer hoses, spray gun or wand.
ATTENTION: Avant de redémarrer, faire fondre la glace se trouvant sur les boyaux, le pistolet pulvérisateur ou la lance de la laveuse à pression.

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Maintenance

Maintenance And Service
Spray Nozzles
Each machine is equipped with one or more spray nozzles, depending on the model. Different spray nozzles are calibrated for each machine, depending on the flow and pressure of that particular model. Spray nozzles vary in bore size and angle of spray. Popular spray angles are 0°, 15°, 25°, 40°. When ordering, please specify size and angle of nozzle. Nozzle size for each machine is located on the serial plate.
Unloader Valves
Unloader valves relieve pressure in the line when a spray gun is closed. Unloader valves are preset and tested at the factory before shipping. Occasional adjustment of the unloader may be necessary to maintain correct pressure. For valve adjustment contact your nearest dealer or call technical support. Tampering with the factory setting may cause personal injury and/or property damage, and will void the manufacturer’s warranty.
Winterizing Procedure
Damage due to freezing is not covered by warranty. Adhere to the following cold weather procedures whenever the washer must be stored or operated outdoors under freezing conditions.
It is necessary to protect your machine against freezing when temperatures drop below 32° F. Siphoning a small amount of antifreeze into the system is recommended. This is done by pouring a 50-50 mix of antifreeze and water into the float tank and then siphoning 100% antifreeze through the detergent line with the pump on. If compressed air is available, an air fitting can be screwed into the float tank strainer fitting, and by injecting compressed air, all water will be blown out of the system. The use of a draft diverter will prevent the wind chill factor from freezing the coil.
Low Pressure Diagnosis
(Machines with spray gun)
Refer to Troubleshooting Chart for low pressure. If the trouble is found to be either the unloader or the pump, your next step is to determine which is the problem. This can be done by eliminating the unloader from the system and attaching the 50′ discharge hose directly to the pump. If high pressure is developed in this manner,

the pump is good and the unloader needs to be repaired or replaced. If low pressure is still present, then the pump needs repairing.
CAUTION: When using this procedure to test components keep the spray gun open at all times.
ATTENTION: Lorsque cette procédure est utilisée pour tester les composants, garder le pistolet pulvérisateur ouvert en tout temps
High Limit Hot Water Thermostat
For safety, each machine is equipped with a high limit control switch. In the event the temperature of the water should exceed its operating temperature, the high limit control will turn the burner off until the water cools.
Pumps
Use only SAE 10W-40 weight non-foaming oil. Change oil after first 50 hours of use. Thereafter, change oil every year or at 500 hour intervals. Oil level should be checked through use of the dipstick found on the top of the pump or by the red dot visible through the oil gauge window. Oil should be maintained at that level.
Heating Coils
To Check Water Heater Coil for Leaks
With the main burners “OFF” start the pumping unit and allow it to run for a few minutes. Check into the burner compartment with a drop light or flashlight. If no leaks are visible, then water dripping from coils is condensation from the flue gases when the burners are on.
Condensation from Heating Coil
When cold water is being pumped into the water heater coils, and the burners are on, condensation will form on the coils and drip down into the burner compartment, giving the appearance of a leaking coil, particularly on cold humid days.
Descaling Coils
In alkaline water areas, lime deposits can accumulate rapidly inside the coil pipes. This growth is increased by the extreme heat build up in the coil. The best prevention for liming conditions is to use high quality cleaning detergents. In areas where alkaline water is an extreme problem, periodic use of Landa Coil Descaler (part # 8.914-296.0) will remove lime and other deposits before coil becomes plugged.

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Maintenance

Periodic descaling of the heating coil is recommended so please consult your local Landa Dealer for instructions.
Gas Valve Regulator Adjustment
Adjustment of the built-in regulator isn’t normally necessary, since it is preset at the factory. However, field adjustment may be accomplished as follows:

Lines To Pilot Light
Outlet

On/Off Switch
Gas Valve Regulator Adjustment

Inlet View
Manifold Pressure Adjustment Screw
Under Cap
1. Attach manometer at pressure tap port.
2. Remove regulator adjustment screw cap.
3. With a small screwdriver, rotate the adjustment screw clockwise to increase or counterclockwise to decrease gas pressure.
4. Replace regulator adjustment screw cap.
Pressure Relief Valve
Each machine is equipped with a relief valve to relieve pressure in the system when higher than normal operating pressures are encountered. If operating pressure of machine is found to be normal and relief valve continues to leak, repair or replace the valve.
CAUTION: Relief valve can become obstructed by deposits and must be unscrewed at least once per year to allow discharge.
ATTENTION: La soupape de décharge peut devenir obstruée par des dépôts et doit être dévissée au moins une fois par année pour permettre le rejet.

Propane Gas
General Safety Precautions
Have a qualified gas service person assist in any gas burner installation or service. Few maintenance people or mechanics are knowledgeable in gas controls or related safety practices. Propane gas is heavier than air; unburned propane gas will gravitate to the floor rather than rise out of the stack. Hence, adequate floor space and good ventilation are especially important with propane systems.
Gas Pressure Requirements
All propane fired machines operate on vapor propane fuel only. They are designed to operate at a pressure of 11 w.c.i. (between 1/3 and 1/2 of one psi), and are often operated at even higher pressures when extra heat is needed.
Exterior regulators are needed to control gas pressure. Propane bottles are not included with the machine. A pressure regulator should be installed between propane 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 burner operates on propane as a vapor gas. As gas is used from the propane cylinder, the liquid in the cylinder boils to maintain vapor gas pressure. This boiling process cools the liquid, and in a heavy, continuous-demand situation, the liquid temperature can fall to the point at which it cannot provide vapor gas as rapidly as is needed. In this case, it may be necessary to warm the propane cylinder by directing a warm spray, not over 120°F, on the cold cylinder or by manifolding two propane bottles together to increase total vaporization capacity. It is recommended that a minimum 100 lb. vapor propane bottle be used on the machine, depending on the length of running time desired.

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Maintenance
Burner Features
Operated Automatic Valve
This machine is equipped with an Intermittent Pilot Ignition System. This system is designed to eliminate the need for a constant burning pilot. Lighting of the pilot is accomplished through electronic spark ignition each time the burner switch is turned on. Do not attempt to light the appliance manually as a burn injury or electrical shock may result. The pilot light will remain on and the main gas valve is turned off when the spray gun is closed.
Care of Main Burner
Due to condensation from heater coils dripping down on the burners, scale build-up may occur in the burner jet orifices.
1. To Remove Burner Manifold From Water Heater Coil
Turn off the gas to the main burner by turning the knob to the “OFF” position on the gas valve and the main gas supply.
Disconnect the pilot and ignition lines from the gas valve. Disconnect union in main burner line below thermostat. Slide burner manifold out through shell opening.
2. To Clean Burner Jets
Select proper size drill for type gas involved. Use pin vise to hold drill and ream out each jet orifice.
CAUTION: Do not ream out orifices to a larger size.
ATTENTION: Ne pas agrandir les orifices.
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.

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Burner Basic Facts
Based on 60° 1 Cu. Ft. NG Approx 1000 BTU Formula Vaporization Point (°F) Specific Gravity (Vapor) Specific Gravity (Liquid) Lbs. per Gal. (Liquid) BTU per Cu. Ft. (Vapor) BTU per Gal. (Liquid) BTU per Lb. (Liquid) Cu. Ft. per Lb. (Liquid) Cu. Ft. per Gal. (Liquid) Octane Number Molecular Weight To Calculate Running Cost:
Example Using Natural Gas at 50¢ Therm:

Maintenance

Propane

Butane

C3H8 -43.7 1.522 0.508 4.23 2.563 91.547 21.591 8.607 36.45 125 44.09 1,000 BTU = 1 Cu. Ft. 100 Cu. Ft. = 1 Therm 1 Therm = 1 Hour Cost of Gas per Therm = Cost to Run

C4H10 31.1 2.006 0.584 4.87 3.39 102.032 21.221 6.53 31.8 91 58.12

400,000 BTU Machine 400 Cu. Ft. (400,000 / 1,000) 4 x 50¢ = $2.00 / Hour to Run ((400 / 100) x cost of gas)

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Maintenance
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. 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 square inch (125 psi).

1″ Water Column

=

11″ Water Column

=

1 lb./sq. in.

=

1 Std. Atmosphere

=

50 oz./sq. in. 11″ Water Column 4 lb./sq. in. 1 lb./sq. in.
14.73 lbs./sq.in 1″ Mercury 14.73 lbs./sq. in.

=

6.35 oz./sq. in.

=

27.71″ Water Column

=

.39 lb./sq. in

Oil Change Record

Date Oil Changed Month/ Estimated Operating Hours

Day/Year

Since Last Oil Change

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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. Regular preventative maintenance will add many hours to the 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

10W-40 Non-foaming

Change

After first 50 hours, then every 500 hours or annually

Clean Burner Filter

Annually

Remove Burner Soot From Heating Coil

Annually

Check Belt Tension

Monthly

De-scale Coil

Annually – (more often if required)

Replace High Pressure Nozzle

Every 6 months

Replace Quick Connects

Annually

Clean Water and Chemical Screen/Filter

Weekly

Clean Float/Supply Tank

Every 6 months

Replace HP Hose

If there is any sign of wear

Grease Motor

Every 10,000 hours

Check Burner Pilot Jets

Annually

Pressure Relief Valve

Annually

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Maintenance

Troubleshooting

PROBLEM
WATER TEMPERATURE
TOO HOT
PRESENCE OF WATER IN OIL
WATER DRIPPING FROM UNDER
PUMP
DETERGENT NOT
DRAWING
PUMP RUNNING NORMALLY BUT PRESSURE LOW ON INSTALLATION
FLUCTUATING PRESSURE
PUMP NOISY

POSSIBLE CAUSE Incoming water to machine warm or hot Gas pressure too high
Detergent line sucking air
Defective high limit switch Incorrect burner nozzle size Insufficient water supplied Restricted water flow Oil seal worn High humidity in air Piston packing worn

SOLUTION
Lower incoming water temperature. See specifications for proper gas pressure. Tighten all clamps. Check detergent lines for holes. Replace. See serial plate. Check water GPM to machine. Check nozzle for obstruction, proper size. Check and replace if necessary. Check and change oil twice as often. Check and replace if necessary.

O-Ring plunger retainer worn

Check and replace if necessary.

Air leakTighten all clamps.

Check detergent lines for holes.

Detergent metering valve packing not tight or packing worn

Tighten nut. Replace valve or packing.

Filter screen on detergent suction hose plugged

Clean or replace.

Dried up detergent plugging 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 line(s)

Repair hole.

Strainer basket plugged

Remove and clean.

Connections on selector valve loose

Put teflon tape on all pipe connections.

Detergent solenoid not opening (where applicable)

Check flow switch, replace detergent solenoid.

Pump sucking air

Check water supply and possibility of air.

Valves sticking

Check and clean or replace if necessary.

Unloader valve seat faulty

Check and replace if necessary.

Nozzle incorrectly sized

Check and replace if necessary (See serial plate for proper size).

Worn piston packing

Check and replace if necessary.

Valves worn

Check and replace if necessary.

Blockage in valve

Check and replace if necessary.

Pump sucking air

Check water supply and air seepage at joints in suction line.

Worn piston packing

Check and replace if necessary.

Air in suction line

Check water supply and connections on suction line.

Broken or weak inlet or discharge valve springs

Check and replace if necessary.

Excessive matter in valves

Check and clean if necessary.

Worn bearings

Check and replace if necessary.

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Maintenance

PROBLEM

POSSIBLE CAUSE

SOLUTION

OIL DRIPPING Oil seal worn

Check and replace if necessary.

Faulty pressure gauge

Install new gauge.

Insuffient water supply Old, worn or incorrect spray nozzle

Use larger garden hose. Clean filter washer at water inlet.
Match nozzle number to machine and /or replace new nozzle.

LOW OPERATING PRESSURE

Belt Slippage

Tighten or replace. Use correct belt.

Plumbing or hose leak

Check plumbing system for leaks. Retape leaks with teflon tape.

Faulty or misadjusted unloader valve

Adjust unloader for proper pressure. Install repair

(where applicable)

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 valve kit.

Obstruction in spray nozzle

Remove obstruction.

Leaking pressure control valve (where applicable) Detergent metering valve left open sucking air or faulty metering valve
Slow motor RPM

Rebuild or replace as needed. Close and /or replace metering valve. Check incoming voltage.

Improper size of gas lines

See sizing gas lines.

Low gas pressure

Increase gas pressure to machine.

LOW WATER Improper pressure regulator TEMPERATURE Low gas pressure

Specify BTU, building gas pressure 11 w.c.i. to machine for correct sizing of regulator.
Increase gas pressure

Soot buildup on coils not allowing heat transfer
Improper burner nozzle

Clean coils. See serial plate.

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Maintenance

PROBLEM
FLOW & BURNER SWITCH ON; NO SPARK,
NO PILOT GAS
HAVE SPARK, NO PILOT GAS FLOW
HAVE PILOT GAS, NO SPARK

POSSIBLE CAUSE A. No main power B. Faulty transformer C. Faulty burner & flow switch D. Faulty ignition control unit
Main gas supply turned off
A. Defective ignitor/ sensor and or its wiring
B. Faulty ignition control unit

SOLUTION
With power switch on, open trigger on spray gun and set your test meter to the 24 volt scale. Probe terminals 24V and 24V(GND). If you do not read 24 volts, the problem is not the ignition system. Perform normal system checks of main power, transformer, thermostat and the limit control. If you do read 24 volts at TH and GND, the problem is in the ignition system. Check for loose or defective wiring. If wiring is good, replace the ignition control unit.
Set test meter to 24 volt 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, replace gas valve.
3. Probe terminals PV and MV/PV. If 24 volts not present, replace ignition control box.
Set test meter to ohm scale.
1. Disconnect the wire from the IGN terminal on the ignition control unit.
2. Touch one meter probe to the tip of the ignitor/ sensor rod in the pilot. Touch the other probe to the quick connect at the other end of ignitor/sensor wire.
3. If you have continuity from the tip of the ignitor/ sensor rod to the connector and no spark, replace the ignition control unit.
4. If you do not have continuity through wire and the ignitor/sensor, check for a loose wire connection in the wire. Repair as needed.
5. Check to see if spark shorts to burner ring through a cut in the ignitor wire.

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Maintenance

PROBLEM

POSSIBLE CAUSE Faulty main valve coil in the gas valve
Faulty ignitor/sensor and/or its wiring

HAVE PILOT FLAME, MAIN BURNER WILL
NOT TURN ON

Ground wire not attached to machine chassis

Faulty ignition control unit

Draft condition pulls flame from ignitor/sensor rod.

SHORT-CYCLING

OF MAIN BURNER. MAIN

BURNER

TURNS OFF BEFORE

THE BURNER SWITCH

OR FLOW SWITCH IS TURNED OFF

Faulty thermostat or water temperature is too high

SOLUTION
Set test meter to 24 volt scale.
With pilot flame on ignitor/sensor, probe terminals MV and MV/PV on the ignition control unit. If you read 24 volts here, but not at the gas valve, there is a loose wiring connection. Repair or replace as needed.
If you do read 24 volts at MV and MV/PV and the pilot flame is impinging on the ignitor/sensor rod, the problems may be:
a. Faulty ignitor/sensor and/or its wiring.
b. Faulty ignition control unit.
Set test meter to the ohm scale. Turn burner switch off.
Check continuity through the green ground wire and its connections.
Reconnect the ignitor/sensor wire and the ground wire.
Turn burner 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.
Check the thermostat by bypassing at terminals P1 & 1.
Set thermostat high. With main burner on, observe the pilot flame impingement on the ignitor/sensor.
If pilot flame is small and draft condition pulls flame from ignitor sensor rod, the burner will turn off and then on again. a. Adjust pilot flame higher or clean pilot orifice. b. Bend ignitor/sensor rod closer to pilot flame.
If flame impingement on the ignitor/sensor is stable and the system short- cycles, check the limit switch.
Set test meter to 110 volt scale; a. When the system cycles off, probe the switch terminals of the limit switch. b. If you read 24V across the switch terminals the limit switch is open. Replace the limit switch.
A pilot flame set too high will also cause burner to short cycle. Pilot flame lifts over ignitor/sensor.

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9.801-511.0 · Printed in U.S.A.

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