Watermark 1 Model WM-1 Waterborne Air Spray Gun...WARNING: Hot! Risk of burns. Wear heat-protective...

Watermark� 1 Model WM-1Waterborne Air Spray Gun

Customer Product ManualPart 106 915C

NORDSON CORPORATION � AMHERST, OHIO � USA

� 1997 Nordson CorporationAll rights reserved

106 915CIssued 11/97

Manual 21-27

Nordson Corporation welcomes requests for information, comments and inquiries about its products.

Address all correspondence to

Nordson Corporation555 Jackson StreetAmherst, OH 44001

Notice

This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1995. No part ofthis document may be photocopied, reproduced, or translated to another language without the prior written consent

of Nordson Corporation. The information contained in this publication is subject to change without notice.

Trademarks

100 Plus, Blue Box, ChromaFlex, CleanSleeve, CleanSpray, Control Coat, Cross-Cut, Easy Coat, Econo-Coat,Excel 2000, Flow Sentry, Isocoil, Isocore, Iso-Flo, Nordson, the Nordson logo, PRX, Pro-Flo, RBX, Ready-Coat,Rhino, Select Coat, Select Cure, Shur-Lok, Smart Spray, System Sentry, Thread Coat, Tribomatic, Versa-Spray,

and Watermark are registered trademarks of Nordson Corporation.

CPX, CanWorks, Excel 2000, PowderGrid, Pulse Spray, SCF, Versa-Coat, Versa Screen, Package of Values, andSwirl Coat are trademarks of Nordson Corporation.

Loctite is a registered trademark of Loctite Corporation.

Kalrez and Viton are registered trademarks of E.I. DuPont de Nemours & Co.

Table of Contents i


106 915CIssued 11/97

Manual 21-27

Table of Contents

1. Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Safety Symbols 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Qualified Personnel 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Intended Use 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Installation 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. Operation 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7. Less-Obvious Dangers 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. Action in the Event of a System or Component Malfunction 1-8. . . . .

9. Maintenance and Repair 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10. Material and Solvent Precautions 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . .

11. Disposal 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Hose and Tube 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Connections and Controls 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Standard Nozzle Installation 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Nordson Air and Fluid Hose Installations 3-4. . . . . . . . . . . . . . . . . . . . .

1. Introduction 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Preparation 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Setting Flow Rate 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Spraying the Substrate 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Maintenance 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety

Description

Installation

Operation

Maintenance

Table of Contentsii


106 915CIssued 11/97

Manual 21-27

1. Introduction 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Troubleshooting Procedures 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Spray Pattern Faults 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Disassembly 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial Disassembly 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packing Cartridge and Fluid Needle 7-4. . . . . . . . . . . . . . . . . . . . . . .

Air Valve 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Thumb Wheel and Air Needle 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Assembly 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packing Cartridge and Fluid Needle 7-7. . . . . . . . . . . . . . . . . . . . . . .

Air Valve 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Thumb Wheel and Air Needle 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Final Assembly 7-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Illustrated Parts List 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. WM-1 Manual Waterborne Air Spray Gun without Hoses 8-2. . . . . . .

Tools Illustration for WM-1 Manual Waterborne Air Spray Gun without Hoses 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. WM-1 Manual Waterborne Air Spray Gun with Hoses 8-7. . . . . . . . . .

Tools Illustration for WM-1 Manual Waterborne Air Spray Gun with Hoses 8-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Kit Parts List 8-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Needle Service Kit 8-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packing Cartridge Service Kit 8-12. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Valve Service Kit 8-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Seal Service Kit 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Seal Service Kit 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid and Air Seal Service Kits Illustration 8-15. . . . . . . . . . . . . . . . .

5. Accessory Parts List 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Hose Accessory 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grounded Air Hose Accessory 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid and Grounded Air Hose Accessories Illustration 8-17. . . . . . .

Troubleshooting

Repair

Parts

Table of Contents iii


106 915CIssued 11/97

Manual 21-27

1. Physical 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Weight 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Operating Capacities 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Quality 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Flow Rate 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Temperature 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications

Table of Contentsiv


106 915CIssued 11/97

Manual 21-27


Issued 11/95 A1EN−03−[SF−LIQD]−3

Section 1

Safety

Safety1-0


Issued 11/95A1EN−03−[SF−LIQD]−3

Safety 1-1



Section 1Safety

This section contains general safety instructions for using your Nordsonequipment. Task- and equipment-specific warnings are included in othersections of this manual where appropriate. Note all warnings and followall instructions carefully. Failure to do so may result in personal injury,death, or property damage.

To use this equipment safely,

� read and become familiar with the general safety instructionsprovided in this section of the manual before installing, operating,maintaining, or repairing this equipment.

� read and carefully follow the instructions given throughout this manualfor performing specific tasks and working with specific equipment.

� store this manual within easy reach of personnel installing, operating,maintaining, or repairing this equipment.

� follow all applicable safety procedures required by your company,industry standards, and government or other regulatory agencies.Refer to the National Fire Protection Association (NFPA) standard 33and to federal, state, regulatory agency, and local codes for rules andregulations covering installation and operation of spray systems.

� obtain and read Material Safety Data Sheets (MSDS) for all materialsused.

Become familiar with the safety symbols presented in this section. Thesesymbols will alert you to safety hazards and conditions that may result inpersonal injury, death, or property and equipment damage.

WARNING: Failure to observe this warning may result inpersonal injury, death, or equipment damage.

1. Introduction

2. Safety Symbols

Safety1-2



WARNING: Risk of electrical shock. Failure to observe thiswarning may result in personal injury, death, or equipmentdamage.

WARNING: Disconnect equipment from line voltage. Failure toobserve this warning may result in personal injury, death, orequipment damage.

WARNING: Risk of explosion or fire. Fire, open flames, andsmoking prohibited.

WARNING: Wear protective clothing, safety goggles, andapproved respiratory protection. Failure to observe may resultin serious injury.

WARNING: Hot! Risk of burns. Wear heat-protective clothing,safety goggles with side shields and/or heat-protective glovesdepending on the symbol shown.

WARNING: System or material pressurized. Relieve pressure.Failure to observe this warning may result in serious injuryor death.

WARNING: Injection. Do not point this device at yourself orother personnel. Failure to observe this warning may result inserious injury or death.

2. Safety Symbols (contd.)

Safety 1-3



CAUTION: Failure to observe may result in equipmentdamage.

CAUTION: Hot surface. Failure to observe may result inburns.

“Qualified personnel” is defined here as individuals who thoroughlyunderstand the equipment and its safe operation, maintenance, andrepair. Qualified personnel are physically capable of performing therequired tasks, familiar with all relevant safety rules and regulations, andhave been trained to safely install, operate, maintain, and repair theequipment. It is the responsibility of the company operating thisequipment to see that its personnel meet these requirements.

WARNING: Use of this equipment in ways other thandescribed in this manual may result in personal injury, death, orproperty and equipment damage. Use this equipment only asdescribed in this manual.

Nordson Corporation cannot be responsible for injuries or damagesresulting from nonstandard, unintended applications of its equipment.This equipment is designed and intended only for the purpose describedin this manual. Uses not described in this manual are consideredunintended uses and may result in serious personal injury, death, orproperty damage. Unintended uses may result from taking the followingactions:

� making changes to equipment that have not been recommended ordescribed in this manual or using parts that are not genuine Nordsonreplacement parts

� failing to make sure that auxiliary equipment complies with approvalagency requirements, local codes, and all applicable safety standards

� using materials or auxiliary equipment that are inappropriate orincompatible with your Nordson equipment

� allowing unqualified personnel to perform any task

2. Safety Symbols (contd.)

3. Qualified Personnel

4. Intended Use

Safety1-4



Read the installation section of all system component manuals beforeinstalling your Nordson equipment. A thorough understanding of systemcomponents and their requirements will help you to install this equipmentsafely and efficiently.

WARNING: Failure to follow these safety procedures can resultin personal injury or death.

� Allow only qualified personnel to install Nordson equipment.

� Use only approved equipment. Using unapproved equipment in anapproved system may void agency approvals.

� Make sure all equipment is rated and approved for the environment inwhich you are using it.

� Follow all instructions for installing components and accessories.

� Install all electrical, pneumatic, gas, and hydraulic connections tolocal code.

� Install locking, manual, shutoff valves in the air supply lines to thesystem. This allows you to relieve air pressure and lock out thepneumatic system before undertaking maintenance and repairs.

� Install a locking disconnect switch or breaker in the service line aheadof any electrical equipment.

� Use only electrical wire of sufficient gauge and insulation to handlethe rated current demand. All wiring must meet local codes.

� Ground all electrically conductive equipment. Ungroundedconductive equipment can store a static charge which could ignite afire or cause an explosion if a hot spark is discharged.

� Route electrical wiring, electrostatic cables, and air hoses and tubingalong a protected path. Make sure they will not be damaged. Do notbend electrostatic cables around a radius of less than 6 in. (152 mm).

� Install safety interlocks and approved, fast-acting fire detectionsystems. These shut down the spray system and any flammableliquid supply if a ventilation or electrical problem occurs, a fire isdetected, or other emergency situation develops.

5. Installation

Safety 1-5



� Make sure the spray area floor is conductive to ground and that theoperator’s platform is grounded.

� Use only designated lifting points or lugs to lift and move heavyequipment. Always balance and block loads when lifting to preventshifting. Lifting devices must be inspected, certified, and rated for agreater weight than the equipment being lifted.

� Do not use unapproved fluid hoses. Solvents may cause them todeteriorate rapidly which may allow flammable or pressurized materialto escape.

� Protect components from damage, wear, and harsh environmentalconditions.

� Allow ample room for maintenance, material supply container drop-offand loading, panel accessibility, and cover removal.

� Protect equipment with safety devices as specified by applicablesafety regulations.

� If safety devices must be removed for installation, install themimmediately after the work is completed and check them for properfunctioning.

Only qualified personnel, physically capable of operating the equipmentand with no impairments to their judgement or reaction times, shouldoperate this equipment.

Read all component manuals before operating this equipment. Athorough understanding of system components and their operation willhelp you operate the system safely and efficiently.

� Use this equipment only in the environments for which it is rated. Donot operate this equipment in humid, flammable, or explosiveenvironments unless it has been rated for safe operation in theseenvironments.

� Before starting this equipment, check all safety interlocks,fire-detection systems, and protective devices such as panels andcovers. Make sure all devices are fully functional. Do not operate thesystem if these devices are not working properly. Do not deactivateor bypass automatic safety interlocks, locked-out electricaldisconnects, or pneumatic valves.

5. Installation (contd.)

6. Operation

Safety1-6



� Know where EMERGENCY STOP buttons, shutoff valves, and fireextinguishers are located. Make sure they work. If a componentmalfunctions, shut down and lock out the equipment immediately.

� Before operating, make sure all conductive equipment, objects beingsprayed, and fluid containers are connected to a true earth ground.

� Never operate equipment with a known malfunction or leak.

� Never point handguns or applicator nozzles at yourself or otherpersons.

� Never touch exposed electrical connections on equipment while thepower is ON.

� Do not operate the equipment at pressures higher than the ratedmaximum working pressure of any component in the system.

� Shut off moving equipment before taking measurements or inspectingworkpieces.

� Know the pinch points, temperatures, pressures, and materialcomposition for all equipment that you are working with. Recognizepotential hazards associated with these and exercise appropriatecaution.

� Wear shoes with conductive soles, such as leather, or use groundingstraps to maintain a connection to ground when working with oraround electrostatic equipment.

� Do not wear or carry metallic objects (jewelry or tools) while workingwith or around electrostatic equipment. Ungrounded metal can storea static charge and cause harmful shocks.

� Maintain skin-to-metal contact between your hand and the gun handleto prevent shocks while operating manual electrostatic spray guns. Ifwearing gloves, cut away the palm or fingers.

� Shut off electrostatic power supplies and ground gun electrodesbefore making adjustments to powder spray guns.

� If you notice electrical arcing in a spray area, shut down the systemimmediately. An arc can cause a fire or explosion.

� Keep parts of the body or loose clothing away from rotating parts.Remove personal jewelry and cover or tie back long hair.

6. Operation (contd.)

Safety 1-7



� Wear National Institute of Occupational Safety and Health (NIOSH)approved respirators while operating spray equipment and whenperforming maintenance and cleaning tasks.

� Wear eye protection when operating spray equipment.

� Wear gloves and protective clothing to protect your skin frommaterials.

� Keep paint pumps, pressure pots, and containers of flammablecoating materials or solvents far enough away from spray booths toprevent their inclusion in a booth fire.

� Do not smoke in the spray area. A lit cigarette could ignite a fire orcause an explosion.

� Treat all high-pressure fittings and hoses as if they could leak.High-pressure compressed air can be injected under the skin andcause serious injury or death.

� Do not use materials that will corrode the equipment.

� Do not attempt to operate electrical equipment if standing water ispresent.

� Wash exposed skin frequently with soap and water, especially beforeeating or drinking. Do not use solvents to remove coating materialsfrom your skin.

Operators should also be aware of less-obvious dangers in the workplacethat often cannot be completely eliminated:

� exposed surfaces on the equipment which may be hot or have sharpedges and cannot be practically safeguarded

� electrical equipment which may remain energized after the equipmenthas been shut off

� vapors and materials which may cause allergic reactions or otherhealth problems

� automatic hydraulic, pneumatic equipment, or mechanical parts thatmay move without warning

� unguarded, moving mechanical assemblies

6. Operation (contd.)

7. Less-Obvious Dangers

Safety1-8



Do not operate a system that contains malfunctioning components. If acomponent malfunctions, turn the system OFF immediately.

� Disconnect and lock out electrical power. Close and lock outhydraulic and pneumatic shutoff valves and relieve pressures.

� Allow only qualified personnel to make repairs. Repair or replace themalfunctioning component according to instructions provided in itsmanual.

Allow only qualified personnel to perform maintenance, troubleshooting,and repair tasks. Only persons who are properly trained and familiar withNordson equipment are permitted to service this equipment.

� Always wear appropriate protective clothing and use safety deviceswhen working on this equipment.

� Follow the recommended maintenance procedures in your equipmentmanuals.

� Do not service or adjust any equipment unless another person trainedin first aid and CPR is present.

� Disconnect, lock out, and tag electrical power at a disconnect orbreaker in the service line ahead of electrical equipment beforeservicing.

� Relieve air and fluid pressures before servicing equipment. Followthe specific instructions in this manual.

� Use only genuine Nordson replacement parts. Using unapprovedparts or making unapproved modifications to equipment may voidagency approvals and create safety hazards.

WARNING: Note the flash point of the cleaning solvent used.Only use controlled methods and equipment, such astemperature-controlled or explosion-protected heaters, to heatcleaning solvent. Observe explosion-prevention regulationsand follow applicable safety instructions.

� Refer to the MSDS before using solvents to clean this equipment.The MSDS will provide use, storage, and disposal information aboutthe solvent. Read this information carefully and follow instructions.

8. Action in the Event of aSystem or ComponentMalfunction

9. Maintenance and Repair

Safety 1-9



� Never use an open flame to clean the unit or components of the unit.

� Do not store flammable materials in the spray area or room. Keeppaint pumps, pressure pots, and containers of flammable coatingmaterials or solvents far enough away from spray booths to preventtheir inclusion in a booth fire. If a fire or explosion occurs, flammablematerials in the area will increase the chances and the extent ofpersonal injuries and property damage.

� Make sure that the room where you are working is sufficientlyventilated. Avoid breathing vapors over prolonged periods of time.

� Check interlock systems periodically to ensure their effectiveness.

WARNING: Operating faulty or electrostatic equipment ishazardous and can cause electrocution, fire, or explosion.Make resistance checks part of your periodic maintenanceprogram.

� Check all ground connections periodically with a megohm meter.Resistance to ground must not exceed one megohm. If sparks orarcing occur, shut down the system immediately.

� Connect all disconnected equipment ground cables and wires afterservicing the equipment. Ground all conductive equipment.

WARNING: Service lines connected to panel disconnectswitches will still be energized unless power is shut off atanother disconnect ahead of the panel. Make sure the power isoff before servicing. Wait 5 minutes for capacitors to dischargeafter shutting off the electrical power.

� Turn off the electrostatic power supply and ground the gun electrodebefore adjusting or cleaning the nozzles, fluid tips, or air caps.

� If a “power on” test is required, perform the test carefully and thenshut off and lock out power as soon as the test is over.

� Never troubleshoot the power supply without first disconnecting allexternal power supplies and discharging the high-voltage capacitorswith an insulated screwdriver.

� Ground electrodes and electrostatic cable ends before touching them.

9. Maintenance and Repair (contd.)

Safety1-10



� Do not attempt to service electrical equipment if there is standingwater present. Do not service electrical equipment in a high-humidityenvironment.

� Use tools with insulated handles when working with electricalequipment.

� Keep high-voltage connection points clean and insulated withdielectric grease or oil.

� Do not attempt to service a moving piece of equipment. Shut off theequipment and lock out power. Secure equipment to preventuncontrolled movement.

WARNING: Hot! Risk of burns. Wear heat-protective clothing,eye protection with side shields and/or heat-protective gloves.

Heated materials may cause severe burns on contact. Remember thatsome materials, even solid materials, may retain heat for some time. Ifyou are burned by a heated material, immediately cool the affected skinwith lots of cool, clean water. Do not try to remove hot, melted materialfrom the skin. Seek immediate medical attention.

High-pressure fluids, unless they are safely contained, are extremelyhazardous. A jet of high-pressure fluid can act like a knife or needle,penetrate skin and muscle, and inject itself into your body. Injected fluidscan cause toxic poisoning.

Do not treat an injection injury as minor. Seek medical care immediately.Inform the medical staff at the hospital that you have an injection injuryand identify the fluid that was injected. If possible, give the doctor copiesof the MSDS for the injected fluid and for any additives, such as solvents,that are in the injected fluid.

Also, Nordson recommends that you carry a National Safety EquipmentManufacturers Association (NSEMA) wallet card to give to emergencymedical staff in the event of an injection injury. These cards are suppliedwith the equipment. Additional cards are available free from NordsonCorporation.

9. Maintenance and Repair (contd.)

10. Material and SolventPrecautions

Safety 1-11



WARNING: Injection hazard. Do not go near a known leak in ahose or fitting, and stay clear of all spray nozzles or orifices. Donot point an applicator at yourself or other personnel. Thehigh-pressure fluid stream can penetrate skin and inject fluidinto the body causing serious injury or death.

To prevent an injection injury, take some basic safety precautions whenoperating your equipment.

� Always handle spray applicators carefully. Do not point a pressurizedgun at yourself or other personnel.

� Never place hands, fingers, or other parts of your body directly over aspray nozzle or in front of a leak in a high-pressure system.

� Never “back-flush” the nozzles. Blocking a nozzle causes thehigh-pressure fluid to reverse direction and can lead to an injectioninjury.

� Always relieve system pressure before servicing equipment. Triggerall applicators and bleed off system pressure.

Halogenated hydrocarbon solvents can cause an explosion when usedwith aluminum components in a pressurized fluid pumping system(pumps, heaters, filters, valves, spray guns, and tanks). The explosioncould cause serious bodily injury, death, or substantial property damage.No available stabilizers will prevent this violent reaction from happening.

WARNING: Never use halogenated hydrocarbon solvents toclean aluminum parts or to flush any system. Cleaning agents,coatings and paints, or adhesives may contain halogenatedhydrocarbon solvents. Obtain and read the MSDS for eachmaterial and solvent being used.

� Use nonhalogenated solvents.

� Contact your solvent supplier to determine whether your existingmaterials and solvents contain halogenated hydrocarbons or to obtaina suitable, nonhalogenated hydrocarbon solvent for cleaning andflushing your system.

10. Material and SolventPrecautions (contd.)

Safety1-12



� See Table 1-1. Check the labels on your solvent containers.Halogenated hydrocarbon solvents can be recognized if any of thefollowing elements are listed in the name of the product or as aningredient:

Element Symbol Prefix

Flourine F “Flouro-”

Chlorine Cl “Chloro-”

Bromine Br “Bromo-”

Iodine I “Iodo-”

If you are now using halogenated hydrocarbon solvents in pressurizedsystems with aluminum components, perform the following steps:

� Pump the system empty, shut off the pumps, and relieve the systempressure.

� Disassemble and inspect the system components. Replace anydamaged or corroded parts.

� Thoroughly clean all noncorroded parts with nonhalogenatedhydrocarbon.

� Contact your coatings, solvent, or adhesive supplier for anonhalogenated solvent to thoroughly flush the entire system beforeoperating it.

� If you must continue to use halogenated hydrocarbon solvents,consult your Nordson representative about compatible Nordsoncomponents.


Safety 1-13



Table 1-1 Solvents Containing Halogenated Fluids

Chlorinated Solvents Iodinated Solvents Brominated Solvents Fluorocarbon Solvents

Carbon Tetrachloride Ethyl Iodide Ethylene Dibromide Dichlorofluoromethane

Chloroform Methyl Iodide Methyl Bromide Trichlorofluoromethane

Ethylene Dichloride N-butyl Iodide Methylene Chlorobromide Freon

Methylene Chloride Propyl Iodide

1-1-1 Trichloroethane

Monochlorobenzene

Orthodichlorobenzene

Perchloroethylene

Trichloroethylene

Dispose of equipment and materials used in operation and cleaningaccording to your local regulations.


11. Disposal

Safety1-14




106 915CIssued 11/97

Manual 21-27

Section 2

Description

Description2-0


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Description 2-1


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Manual 21-27

Section 2Description

See Figure 2-1. The Watermark 1 Model WM-1 Manual Waterborne AirSpray Gun (WM-1 spray gun) is a lightweight, well-balanced, manualspray gun. The WM-1 spray gun is used to apply non-flammable,externally-charged, waterborne coating materials.

CAUTION: Do not use a power supply that produces morethan 60 kV. Operating at higher voltages will damage the spraygun and decrease the life of internal components.

The WM-1 spray gun is designed to operate at a maximum voltage of60 kV. The Nordson EPS6 power supply is specially designed to provideelectrostatic power to the spray gun. Most waterborne materials achieveoptimum transfer efficiency around 40 kV.

The WM-1 spray gun is shipped with a package of repair tools. Nordsonalso provides 8-meter (26-foot) or 12-meter (39-foot) air and fluid hosesas accessories to the gun. Refer to the Parts section for fluid hose andgrounded air hose ordering information.

The fluid hose has the high-dielectric strength required for chargedwaterborne coating materials. Without this strength, the high-voltagecoating material could burn through the hose and cause a serious safetyhazard for personnel.

1. Introduction

Fluid Hose and Tube

Description2-2


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Manual 21-27

Table 2-1 describes each connection and control of the WM-1 spray gun.Numbers in the Item column correspond to the numbers on Figure 2-1.Familiarize yourself with the location and function of each connection andcontrol.

Table 2-1 Connections and Controls

Item Connections andControls Function

1. Thumb wheel Varies the amount of pattern/horn air flow of the spray pattern

NOTE: Turning the thumb wheel downward increases the flatness of the spraypattern on a standard nozzle.

2. Male connector Attaches a grounded air hose to the WM-1 spray gun

3. Trigger lock Prevents trigger movement

NOTE: Sliding the trigger lock all the way up prevents trigger movement. Slidingthe trigger lock all the way down enables trigger movement and opens the air flowto the pattern and atomizing air.

4. Trigger Controls coating material flow from the WM-1 spray gun

NOTE: Always fully draw the trigger during WM-1 spray gun operation and alwayslock out the trigger when the spray gun is not in use. Air flow will energize thepower system.

2. Connections andControls

Description 2-3


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Manual 21-27

2127003B

2

4

3

1

Fig. 2-1 Side view of the WM-1 spray gun

1. Thumb wheel2. Male connector

3. Trigger lock 4. Trigger

2. Connections andControls (contd.)

Description2-4


106 915CIssued 11/97

Manual 21-27


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Manual 21-27

Section 3

Installation

Installation3-0


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Installation 3-1


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Section 3Installation

WARNING: Allow only qualified personnel to perform thefollowing tasks. Follow the safety instructions in this documentand all other related documentation.

WARNING: Risk of electrical shock. Spray gun operationrequires the use of a grounded air hose and a high-dielectricstrength fluid tube. Failure to observe this warning may resultin personal injury, death, or equipment damage.

CAUTION: Do not overtighten parts. Failure to observe thisprecaution will result in equipment damage.

Before proceeding, fully read and understand the information in thismanual. This section contains the tasks required to install a WM-1 spraygun. Before performing these tasks, make sure you have:

� Removed the WM-1 spray gun, tools, and Nordson gun cover fromthe shipping container.

� Obtained a standard nozzle (fluid tip and air cap) for the WM-1 spraygun.

� Installed a Nordson air hose on the grounded supply air regulator.

� Installed a Nordson fluid hose on your fluid delivery system.

1. Introduction

Installation3-2


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Manual 21-27

2127004C

7

16 5

6

8

10

11

12

15

1

13

14

9

42 3

Fig. 3-1 WM-1 spray gun installation

1. Retaining ring2. Air cap3. Fluid tip4. Extension5. Captive screw6. Rear slide

7. Dielectric grease application8. Fluid hose9. Hose strain relief lug

10. Grounded air hose11. Grounded air hose connector

12. Connector13. Trigger14. Screw (2)15. Captive screw (3)16. O-ring (2)

1. Introduction (contd.)

Installation 3-3


106 915CIssued 11/97

Manual 21-27

See Figure 3-1. To install a standard nozzle, perform the following steps:

NOTE: The Parts section of this manual contains a list of tools suppliedwith the WM-1 spray gun.

1. Remove all shipping caps from the WM-1 spray gun.

2. Remove the retaining ring (1).


3. See Figure 3-1. Trigger the WM-1 spray gun. Thread the fluid tip (3)into the extension (4) until the fluid tip is seated, and then tightenanother quarter turn maximum. Use the Nordson-supplied wrench tosecure the tip. Do not overtighten.

4. Place the air cap (2) on the fluid tip (3) and the retaining ring (1) overthe air cap.

5. Position the air cap (2) and hand-tighten the retaining ring (1) onto theextension (4). Do not overtighten.

2. Standard NozzleInstallation

Installation3-4


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Manual 21-27

Nordson air and fluid hoses for the WM-1 manual spray gun are bothavailable in either 8-meter (26-foot) and 12-meter (39-foot) lengths.Nordson high-dielectric strength fluid hoses each have an attached 3/8-in.NPSF hose connector. Nordson grounded air hoses each have two1/4-in. NPSF fittings.

Perform these steps if you ordered the WM-1 spray gun without hoses:

1. See Figure 3-1. Loosen the captive screw (5) securing therear slide (6). Remove the rear slide by sliding upward.

2. Remove the screws (14) securing the trigger (13). Remove thetrigger.

3. Loosen the captive screws (15) securing the extension (4). Removethe extension.

4. Carefully insert the fluid hose (8) through the gun body.

CAUTION: Do not allow dielectric grease to enter the coatingmaterial stream. Failure to observe this precaution will result incontamination of the coating material.

5. Apply a thin film of dielectric grease (7) onto the fluid hose (8) whereindicated.

6. Carefully insert the fluid hose (8) into the extension (4).


NOTE: Make sure the O-rings (16) are seated in the gun body wheninstalling the extension (4).

7. Install the extension (4) and secure using the captive screws (15). Donot overtighten.

8. Install the trigger (13) and secure using the screws (14). Do notovertighten.

9. Insert the fluid hose strain relief lug (9) into the pocket in the gunhandle.

NOTE: A small amount of lubricant on the rear slide sliding surface willfacilitate installation.

10. Pull out on the captive screw. Install the rear slide (6) and tighten thecaptive screw (5). Do not overtighten.

11. Connect the grounded air hose connector (11) to the connector (12).Do not overtighten. Make sure the hose is properly grounded.

3. Nordson Air and FluidHose Installations


106 915CIssued 11/97

Manual 21-27

Section 4

Operation

Operation4-0


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Operation 4-1


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Section 4Operation


WARNING: Risk of electrical shock. Spray gun operationrequires the use of a grounded air hose and a high-dielectricstrength fluid tube. Failure to observe this warning may resultin personal injury, death, or equipment damage.

WARNING: Risk of electrical shock. The operator’s bare handmust be in contact with the gun handle to prevent shocks whileoperating manual electrostatic spray guns. If wearing gloves,cut away the palm or fingers. Failure to observe this warningmay result in personal injury, death, or equipment damage.

WARNING: Ignition hazard. Do not use this handgun to spraycoating materials having a fire point below 60 �C (140 �F).Failure to observe this warning may result in serious injury andequipment damage.

WARNING: Connecting more than one spray gun to a fluiddelivery system not approved by the Nordson Corporation maybe unsafe and in possible violation of National Fire ProtectionAgency (NFPA) regulations.

CAUTION: Dirty, moist air. Use only clean, dry air. Failure toobserve this caution may reduce electrostatic efficiency andcause equipment damage.

Follow all startup procedures. These procedures vary according to yourlocal regulations and system requirements. Daily operation is describedin three stages: preparation, setting flow rate, and spraying thesubstrate.

1. Introduction

Operation4-2


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Manual 21-27

WARNING: Before operating, perform any and all operationalchecks on your delivery system and the spray gun. Failure toobserve this warning could result in personal injury, death, orequipment damage.

WARNING: Wear protective clothing, saftey goggles, andapproved respiratory protection. Failure to observe may resultin serious injury.

Before operating the spray gun, perform the following tasks:

1. Perform the necessary tasks to start up the fluid delivery system.

2. Check all fluid and air lines for leaks.

WARNING: Risk of electrical shock. Make sure that theelectrostatic power unit is turned off and the fluid supply hasbeen properly grounded. Failure to observe this warning mayresult in personal injury, death, or equipment damage.

To set the fluid flow rate of the WM-1 spray gun, perform the followingsteps:

1. See Figure 4-1. Disconnect the grounded air hose (2) from theconnector (3).

2. Slide the trigger lock (4) all the way down.

3. Perform the tasks necessary to set fluid pressure in the fluid deliverysystem.

� Use the lowest fluid pressure possible to obtain a satisfactory flowrate for your coating material.

� Set the fluid pressure to obtain a fluid stream which begins tobreak at 304.8−406.4 mm (12−16 in.) from the tip of the spraygun.

4. Point the WM-1 spray gun into a graduated container. Pull thetrigger (5). Use a stop watch to establish the time needed to collectthe desired amount of fluid.

2. Preparation

3. Setting Flow Rate

Operation 4-3


106 915CIssued 11/97

Manual 21-27

5. Repeat steps 3 and 4 until the desired flow rate per minute isobtained,

� If the flow rate is too high, repeat steps 3 and 4 with the next sizesmaller fluid tip.

� If the flow rate is too low, repeat steps 3 and 4 with the next largersize fluid tip.

2127005B

1

4

2

3

5

Fig. 4-1 WM-1 spray gun adjustments

1. Thumb wheel2. Grounded air hose3. Connector

4. Trigger lock5. Trigger

3. Setting Flow Rate (contd.)

Operation4-4


106 915CIssued 11/97

Manual 21-27

Finishing technique and application efficiency is a combination ofoperator experience and experimentation. To spray your substrate,perform the following steps:


1. See Figure 4-1. Connect the grounded air hose (2) to theconnector (3). Do not overtighten.

2. Perform the tasks necessary to set the supply air pressure to theWM-1 spray gun. Use the lowest air pressure possible to obtainsatisfactory atomization of your coating material.

WARNING: Risk of electrical shock. The operator’s bare handmust be in contact with the gun handle to prevent shocks whileoperating manual electrostatic spray guns. If wearing gloves,cut away the palm or fingers. Failure to observe this warningmay result in personal injury, death, or equipment damage.

3. Fully trigger the WM-1 spray gun.

4. Turn the thumb wheel (1) to achieve your desired spray pattern.

5. Repeat steps 2, 3, and 4 until the desired spray pattern andatomization is obtained. If necessary, adjust your delivery systemfluid and air pressure.

6. Cover the exterior of the WM-1 spray gun with a Nordson cover.

7. Turn on the electrostatic power supply.

8. The system is now operational.

CAUTION: Do not allow the current draw to increase. Anincrease in current draw is an indication that the gun extensionor packing cartridge is dirty or wet and should be cleaned.Operating the spray gun while shorted will cause extensivecomponent damage.

9. Record the current draw reading on the power supply at start up.Check the current draw daily to ensure that it does not begin toincrease.

4. Spraying the Substrate


106 915CIssued 11/97

Manual 21-27

Section 5

Maintenance

Maintenance5-0


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Manual 21-27

Maintenance 5-1


106 915CIssued 11/97

Manual 21-27

Section 5Maintenance

WARNING: Allow only qualified personnel to perform thefollowing tasks. Observe and follow the safety instructions inthis document and all other related documentation.


WARNING: System or material pressurized. Relieve pressure.Failure to observe this warning may result in serious injury ordeath.

To keep the WM-1 spray gun operating properly, set up and follow aregular cleaning schedule. Proper use of the disposable covers willreduce cleanup time. A dirty or material-coated extension will allow theelectrostatic charge to bleed back toward the grounded handle. Thischarge decreases transfer efficiency and could endanger the operator.

To clean the WM-1 spray gun, perform the following steps:

1. Relieve the air and fluid pressure. Turn the electrostatic unit off.

2. Trigger the WM-1 spray gun into a suitably grounded container todrain the fluid tube. Lock the trigger lock.

3. Point the WM-1 spray gun downward and remove the retaining ring,air cap, and fluid tip.

4. Adjust the solvent supply to the lowest possible pressure.

1. Introduction

2. Maintenance

Maintenance5-2


106 915CIssued 11/97

Manual 21-27

5. Unlock the trigger lock. Flush the WM-1 gun into a suitably groundedcontainer.

6. Turn off the solvent supply and relieve pressure. Disconnect the fluidand air hoses.

WARNING: Do not point the spray gun toward you or otherpersonnel. The gun may discharge and cause personal injuryor death.

WARNING: Do not submerge the WM-1 spray gun in cleaningsolvent or use an excessive amount of cleaning solvent on acleaning cloth. Failure to observe this warning may result inpersonal injury, death, or equipment damage.

CAUTION: Use of metal objects to clean the air spray nozzleor rough handling the air spray nozzle during cleaning willcause equipment damage and result in faulty spray patterns.

7. Point the gun downward and clean the front with a soft-bristled brushdampened with a compatible cleaning solvent.

8. Dampen a soft cloth with a compatible cleaning solvent. Point thegun downward and wipe off the outer surfaces.

9. Clean the retaining ring, air cap, and fluid tip with a soft-bristledbrush. Dry the components.


10. Trigger the WM-1 spray gun. Thread the fluid tip into the extensionuntil the fluid tip is seated, and then tighten another quarter turnmaximum. Use the supplied Nordson wrench to secure the tip. Donot overtighten.

11. Place the air cap on the fluid tip and the retaining ring over the aircap.

12. Position the air cap and hand-tighten the retaining ring onto theextension. Do not overtighten.

13. Hang up the gun until ready for use.

2. Maintenance (contd.)


106 915CIssued 11/97

Manual 21-27

Section 6

Troubleshooting

Troubleshooting6-0


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Manual 21-27

Troubleshooting 6-1


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Manual 21-27

Section 6Troubleshooting


WARNING: Risk of electrical shock. Make sure that theelectrostatic power unit is turned off and the fluid supply hasbeen properly grounded. Failure to observe this warning mayresult in personal injury, death, or equipment damage.

WARNING: System or material pressurized. Relieve pressure.Failure to observe this warning may result in serious injury ordeath.

This section contains troubleshooting procedures and identifies commonspray pattern faults. These procedures cover only the most commonproblems that you may encounter. If you cannot solve the problem withthe information given here, contact your local Nordson representative forhelp.

Problem Page

1. Air leaks 6-2

2. Coating material leaks 6-2

3. Excessive bounce back 6-2

4. Excessive dry spray 6-2

5. Excessive overspray 6-2

6. Irregular (faulty) spray pattern 6-3

7. Spray not affected by WM-1 spray gun air adjustments 6-3

8. Low or erratic fluid flow 6-3

9. Spitting 6-3

1. Introduction

Troubleshooting6-2


106 915CIssued 11/97

Manual 21-27

Problem Possible Cause Corrective Action

1. Air leaks Foreign matter on the air valve stemor seat

Remove, inspect, and clean air valve.

Worn or damaged air valve seat,spring, stem, or O-rings

Order air valve service kit and air sealservice kit.

2. Coating material leaks Dried material around needle seat orworn or damaged fluid tip

Remove, soak, clean, and inspect fluidtip. Replace if necessary.

Worn fluid needle Remove, clean, and inspect fluid needle.Replace if necessary. Order fluid needleservice kit.

Loose packing cartridge Tighten the packing cartridge retainer.

Packing cartridge seals and O-rings Remove, disassemble, and inspectpacking cartridge and spring. Replaceany defective parts; order packingcartridge service kit.

3. Excessive bounce back Air and coating material pressurestoo high

Reduce pressures.

Pattern/horn air flow too high Adjust the pattern/horn air.

4. Excessive dry spray WM-1 spray gun held too far awayfrom substrate

Move closer to the substrate.

Pattern/horn air too high Adjust the pattern/horn air.

Coating material flow too low Increase coating material flow rate ordecrease air pressure. Check for properair cap and fluid tip.

5. Excessive overspray Spray pattern too wide Reduce pattern/horn air flow.

Atomizing air flow too high Reduce atomizing air flow.

Erratic booth air flow Dampen air movement within booth;check and correct air movement withinbooth.

Loss of electrostatics Check for electrostatic power supplymalfunction. Check substrate earthground.

Fluid pressure too high Decrease coating material flow rate.Check for proper air cap and fluid tip.

2. TroubleshootingProcedures

Troubleshooting 6-3


106 915CIssued 11/97

Manual 21-27

Problem Possible Cause Corrective Action

6. Irregular (faulty) spraypattern

Air pressure too low for coatingmaterial flow

Decrease coating material flow rate orincrease air pressure. Check for properair cap and fluid tip.

Poor atomization due to coatingmaterial viscosity

Reduce viscosity.

Pattern/horn and atomizing air notproperly adjusted

Adjust pattern/horn and atomizing air.

Obstructed atomizing air orifice Remove, soak, and clean air cap andfluid tip.

Damaged fluid tip or air cap Inspect and replace if necessary.

Foreign object inside fluid tip Remove, soak, and clean air cap andfluid tip. Inspect and replace ifnecessary.

Dirty air cap Clean air cap.

Loose air cap Tighten retaining ring.

Puller out of adjustment Adjust puller.

7. Spray not affected byWM-1 spray gun airadjustments

Malfunctioning air adjust thumb wheeland needle

Disassemble and inspect air adjustthumb wheel and needle; replace, ifnecessary.

No air to spray gun Supply air to spray gun.

Erratic supply air Check for blockage in air supply line;adjust supply air regulator.

8. Low or erratic fluid flow Delivery system malfunction Check out the entire delivery system (airand fluid).

Blockage within the spray gun, fluidhose, or fluid system

Flush the system. If necessary, repairthe system.

Low fluid pressure If within the fluid pressure limit of thespray gun, slowly raise fluid pressure.

NOTE: The WM-1 spray gun is rated fora fluid pressure of 5.17 bar (75 psi)maximum.

Coating material too viscous Check that coating material is mixedproperly.

9. Spitting Air bubbles in the fluid stream Remove air from delivery system fluid;check for excessive agitation in the fluidreservoir.

Improper fluid flow adjustment Adjust fluid flow.

2. TroubleshootingProcedures (contd.)

Troubleshooting6-4


106 915CIssued 11/97

Manual 21-27

Figure 6-1 shows some common spray pattern faults of the WM-1 spraygun. Troubleshooting procedures for these and other common film-buildfaults are listed in Table 6-1. If you cannot solve your problems with theinformation given here, contact your local Nordson representative forhelp.

2127021A

ÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎ


ÎÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ


ÎÎÎÎ

ÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎ

1 2 3 4 5 76

Fig. 6-1 Common spray pattern faults

1. Blown pattern2. Heavy bottom pattern3. Heavy top pattern

4. Heavy left side pattern5. Heavy right side pattern

6. Heavy center pattern7. Spitting pattern

Table 6-1 Spray Pattern/Film Fault Corrections

Spray Pattern/FilmFaults

Corrective Action

Blown pattern Reduce pattern/horn air; increase coating material pressure.

Heavy top or heavybottom

Rotate air cap and trigger spray gun; if problem exists, clean air cap; if problem doesnot exist, clean fluid tip or replace air cap; change coating material mixture ifnecessary.

Heavy left side or heavyright side

Rotate air cap and trigger spray gun; if problem exists, clean air cap; if problem doesnot exist, clean fluid tip or replace air cap; change coating material mixture ifnecessary.

Heavy center Increase atomizing air, increase pattern/horn air, or reduce coating material viscosity.

Spitting Purge air bubbles in fluid line; adjust puller; raise atomizing air and fluid pressure;increase pattern/horn air; raise coating material temperature.

Runs and sags Purge air bubbles in fluid line; adjust puller; raise atomizing air and fluid pressure;move farther from substrate, increase pattern/horn air; raise coating materialtemperature.

Dry spray Reduce atomizing air; move closer to substrate; reduce pattern air; change coatingmaterial mixture.

Poor or no wrap Check electrostatic power supply; clean spray gun; remove water from supply air;check substrate ground; remove spray gun grounding path.

Poor coverage inrecesses

Raise atomizing air and coating material pressure; reduce electrostatic power supplyvoltage; move closer to substrate.

3. Spray Pattern Faults


106 915CIssued 11/97

Manual 21-27

Section 7

Repair

Repair7-0


106 915CIssued 11/97

Manual 21-27

Repair 7-1


106 915CIssued 11/97

Manual 21-27

Section 7Repair

WARNING: Allow only qualified personnel to perform thefollowing tasks. Observe and follow the safety instructions inthis document and all other related documentation.


WARNING: System or material pressurized. Relieve pressure.Failure to observe this warning may result in serious injury.


Repair instructions for the WM-1 spray gun are described in theDisassembly and Assembly sections. Before replacing any worn ordamaged part(s), remove the spray gun from the fluid delivery system.

To disconnect the spray gun from a fluid delivery system, perform thefollowing tasks:

1. Turn off the electrostatic power supply.

2. Flush the fluid delivery system through the WM-1 spray gun.

3. Relieve coating material and air pressure within the fluid deliverysystem.

4. See Figure 7-1. Disconnect the grounded air hose (4) from the WM-1spray gun connector (5).

5. Loosen the captive screw (1) securing the rear slide (2). Remove therear slide by sliding upward.

6. Remove the screws (7) securing the trigger (6). Remove the trigger.

1. Introduction

Repair7-2


106 915CIssued 11/97

Manual 21-27

7. Loosen the captive screws (8) securing the extension (9). Removethe extension.

8. Remove the fluid hose (3) from the WM-1 spray gun.

9. Remove the O-ring (10) from the fluid hose (3).

10. Clean, inspect, and replace any worn or damaged parts.

11. Move the spray gun to a clean, dry, and flat surface.

NOTE: Nordson has service kits available for common WM-1 spray gunrepairs. Refer to the Parts section of this manual for more information.

2127006B

1

2

10

3

4

5

6

9

87

Fig. 7-1 WM-1 spray gun removal

1. Captive screw2. Rear slide3. Fluid hose4. Grounded air hose

5. Connector6. Trigger7. Screw (2)

8. Captive screw (3)9. Extension

10. O-ring

1. Introduction (contd.)

Repair 7-3


106 915CIssued 11/97

Manual 21-27

The disassembly procedure for the WM-1 spray gun is described here.

To begin disassembling the WM-1 spray gun, perform the following steps:

1. See Figure 7-2. Remove the retaining ring (6).

2. Remove the air cap (5). Use the supplied Nordson wrench to removethe fluid tip (4).

3. Soak the fluid tip (4), air cap (5) and retaining ring (6) in anappropriate cleaning solution.

4. Remove the O-rings (1) from the gun body (2).


2127007C

1

2

2

3456

Fig. 7-2 WM-1 spray gun initial disassembly

1. O-ring (2)2. Gun body

3. Extension4. Fluid tip

5. Air cap6. Retaining ring

2. Disassembly

Initial Disassembly

Repair7-4


106 915CIssued 11/97

Manual 21-27

To disassemble a worn or damaged packing cartridge and fluid needle,perform the following steps:

NOTE: The puller is attached to the packing cartridge using threadlocking compound.

1. See Figure 7-3. Unscrew and remove the puller (12).

2. Use the supplied Nordson wrench to unscrew the packing cartridgeretainer (11) from the extension (1).

3. Remove the shaft seal (10) from the packing cartridge retainer (11).

4. Screw the puller (12) partially onto the packing cartridgeassembly (7).

5. Pull the remaining parts out of the extension (1) using the puller (12).

6. Unscrew the puller (12) from the packing cartridge assembly (7).

7. Remove the spacer (9).

8. Remove the gasket (8) from the spacer (9).

9. Unscrew the packing cartridge body (5) from the packing cartridgeassembly (7). Remove the spring seal (3) and O-ring (4) from thebody.

NOTE: The fluid needle and packing cartridge assembly are securedusing thread adhesive.

10. Unscrew the fluid needle (2) from the packing cartridge assembly (7).

11. Remove the O-ring (6) from the packing cartridge assembly (7).

12. Clean the exterior of the extension (1) and all parts. Inspect andreplace any worn or damaged parts.

2127008B

2 3 4 5 6 7 8 9 101 11 12

Fig. 7-3 Extension disassembly

1. Extension2. Fluid needle3. Spring seal4. O-ring

5. Packing cartridge body6. O-ring7. Packing cartridge assembly8. Gasket

9. Spacer10. Shaft seal11. Packing cartridge retainer12. Puller

Packing Cartridge and FluidNeedle

Repair 7-5


106 915CIssued 11/97

Manual 21-27

To disassemble worn or damaged air valve parts, perform the followingsteps:

1. See Figure 7-4. Use the supplied nutdriver to remove the air valvebody (12) from the gun body (6).

2. Remove the stem and seal assembly (11) from the air valvebody (12). Remove the conical spring (10) from the assembly.

3. Remove the O-rings (7 and 8) and seal (9) from the air valvebody (12). Inspect and replace any defective parts.

To disassemble worn or damaged parts of the thumb wheel and airneedle, perform the following steps:

1. See Figure 7-4. Remove the captive screw (1) from the rear slide.

2. Turn the thumb wheel (5) downward until the air needle (2) stopsmoving out toward the access hole.

3. Remove the needle stop (13) from the access hole.

4. Thread the captive screw (1) into the air needle (2).

5. Pull the air needle (2) from the gun body (6) using the captivescrew (1). Remove the screw from the needle. Remove theO-ring (3) from the needle.

6. Remove the thumb wheel (5) from the gun body (6). Remove theO-rings (4).


Air Valve

Thumb Wheel and Air Needle

Repair7-6


106 915CIssued 11/97

Manual 21-27

2127009B

8 11

12

13 2 3 4 45

4 5 4

6

7

9 8107912

13 2 3

Fig. 7-4 Thumb wheel and air needle repair

1. Captive screw2. Air needle3. O-ring4. O-ring (2)5. Thumb wheel

6. Gun body7. O-ring8. O-ring9. Seal

10. Conical spring11. Stem and seal assembly12. Air valve body13. Needle stop

Thumb Wheel and Air Needle (contd)

Repair 7-7


106 915CIssued 11/97

Manual 21-27

The assembly procedure for the WM-1 spray gun is described here.

To assemble the packing cartridge and fluid needle into the extension,perform the following steps:

1. See Figure 7-5. Lubricate and install the O-ring (6) onto the packingcartridge assembly (7).


2. Apply thread adhesive to the fluid needle (2) threads. Install thefluid needle (2) on the cartridge assembly. Do not overtighten.

3. Lubricate and install the O-ring (4) on the packing cartridge body (5).

4. Apply a thin film of dielectric grease (13) around the spring/bellowsarea of the packing cartridge assembly (7).

5. Thread the packing cartridge body (5) onto the packing cartridgeassembly (7). Do not overtighten.

6. Slide the spring seal (3), lip or open side out, onto the fluid needle (2).Use the narrow end of the spacer (9) to press the seal into thepacking cartridge body (5).

7. Apply a thin film of dielectric grease (16) to the outside surface of theassembled packing cartridge. Insert the cartridge into theextension (1).

8. Insert the gasket (8) into the spacer (9). Apply a thin film of dielectricgrease (15) to the outside surface of the spacer. Slide the spacer intothe extension (1).

9. Insert the shaft seal (10), lip or open side out, into the packingcartridge retainer (11). Apply a thin film of dielectric grease (14) tothe outside surface of the retainer. Thread the retainer into theextension (1). Secure the retainer using the Nordson wrench.

10. Push the puller (12) through the packing cartridge retainer (11).

11. Thread the puller (12) onto the packing cartridge assembly (7).Further adjustment may be necessary after the trigger is installed.Refer to Final Assembly for the trigger adjustment procedure.

3. Assembly

Packing Cartridge and FluidNeedle

Repair7-8


106 915CIssued 11/97

Manual 21-27

2127010C

16

1 2 3 4 5 6

8 9

12

8

10

9

3

4

2

510 11 12

14

13

11

15

7

3

Fig. 7-5 Packing cartridge and fluid needle assembly

1. Extension2. Fluid needle3. Spring seal4. O-ring5. Packing cartridge body6. O-ring

7. Packing cartridge assembly8. Gasket9. Spacer

10. Shaft seal11. Packing cartridge retainer12. Puller

13. Dielectric grease application14. Dielectric grease application15. Dielectric grease application16. Dielectric grease application

Packing Cartridge and FluidNeedle (contd)

Repair 7-9


106 915CIssued 11/97

Manual 21-27

To assemble an air valve into the gun body, perform the following steps:

1. See Figure 7-4. Insert the seal (9), lip or open side out, into theair valve body (12).

2. Lubricate and install the O-ring (7) on the air valve body (12).

3. Lubricate and install the O-ring (8) on the air valve body (12).

4. Install the stem and seal assembly (11) in the air valve body (12).

5. Push the conical spring (10), narrow end first, onto the stem and sealassembly (11).


6. Use the supplied nutdriver to install the assembled valve into the gunbody (6). Do not overtighten.

To install the thumb wheel and air needle in the gun body, perform thefollowing steps:

1. See Figure 7-4. Lubricate and install the O-rings (4) in thethumb wheel (5). Lubricate and install the O-ring (3) on the airneedle (2).

2. Thread the captive screw (1) into the air needle (2).

3. Insert the thumb wheel (5) into the gun body (6).

4. Align the air needle (2) with the slots in the gun body (6). Insert theneedle into the body until it contacts the thumb wheel (5).

5. Hold the air needle (2) in position while turning the thumb wheel (5)upward to engage the threads of the needle. Once the threads areengaged, remove the captive screw (1). Continue turning thethumbwheel upward until it stops.

6. Install the needle stop (13) into the air needle (2) access hole.

Air Valve

Thumb Wheel and Air Needle

Repair7-10


106 915CIssued 11/97

Manual 21-27

2127012C

4

18 1

2

5

7

8

9

131516

10

20

1221

10

113

6

14

3

19

17

Fig. 7-6 WM-1 spray gun assembly

1. Captive screw2. Rear slide3. Gun body4. Dielectric grease application5. Fluid hose6. Hose strain relief lug7. Grounded air hose

8. Grounded air hose connector9. Connector

10. Trigger11. Screw (2)12. Puller13. Captive screw (3)14. Extension

15. Fluid tip16. Air cap17. Retaining ring18. O-ring (2)19. Air valve stem20. Puller locking screw21. Trigger striker plate

Thumb Wheel and Air Needle(contd)

Repair 7-11


106 915CIssued 11/97

Manual 21-27

To complete the assembly of the WM-1 spray gun, perform the followingsteps:

1. See Figure 7-6. Install the fluid and grounded air hoses (5, 7):

a. Carefully insert the fluid hose (5) through the gun body (3).

CAUTION: Do not allow dielectric grease to enter the coatingmaterial stream. Failure to observe this precaution will result incontamination of the coating material.

b. Apply a thin film of dielectric grease (4) onto the fluid hose (5)where indicated.

c. Carefully insert the fluid hose (5) into the extension (14).

d. Lubricate and install the O-rings (18) onto the gun body (3).


e. Install the extension (14) and secure using the captivescrews (13). Do not overtighten.

f. Install the trigger (10) and secure using the screws (11). Do notovertighten.

g. Insert the fluid hose strain relief lug (6) into the pocket in the gunhandle.

NOTE: A small amount of lubricant on the rear slide sliding surface willfacilitate installation.

h. Pull out on the captive screw (1). Install the rear slide (2) andtighten the captive screw. Do not overtighten.

i. Connect the grounded air hose connector (8) to the connector (9).Do not overtighten. Make sure the grounded air hose (7) isproperly grounded.


Final Assembly

Repair7-12


106 915CIssued 11/97

Manual 21-27

2. Trigger the WM-1 spray gun. Thread the fluid tip (15) into theextension (14) until the fluid tip is seated, and then tighten anotherquarter turn maximum. Use the Nordson-supplied wrench to securethe tip. Do not overtighten.

3. Place the air cap (16) on the fluid tip (15) and the retaining ring (17)over the air cap.

4. Position the air cap (16) and hand-tighten the retaining ring (17) ontothe extension (14). Do not overtighten.

5. Perform the following steps to adjust the trigger (10).

a. Loosen the puller locking screw (18) on the trigger strikerplate (21) until it clears the puller (12). Do not remove the screw.

b. Adjust the puller (12) counterclockwise until the trigger strikerplate (21) contacts the air valve stem (19).

c. Adjust the puller (12) clockwise until the closest notch in the pullerlines up with the puller locking screw (20).

d. Tighten the puller locking screw (20) to lock the puller (12) inplace.

Final Assembly (contd)


106 915CIssued 11/97

Manual 21-27

Section 8

Parts

Parts8-0


106 915CIssued 11/97

Manual 21-27

Parts 8-1


106 915CIssued 11/97

Manual 21-27

Section 8Parts

To order parts, call the Nordson Customer Service Center or your localNordson representative. Use this five-column parts list, and theaccompanying illustration, to describe and locate parts correctly.

Numbers in the Item column correspond to numbers that identify parts inillustrations following each parts list. The code NS (not shown) indicatesthat a listed part is not illustrated. A dash (—) is used when the partnumber applies to all parts in the illustration.

The six-digit number in the Part column is the Nordson Corporation partnumber. A series of dashes in this column (- - - - - -) means the partcannot be ordered separately.

The Description column gives the part name, as well as its dimensionsand other characteristics when appropriate. Indentions show therelationships between assemblies, subassemblies, and parts.

Item Part Description Quantity Note

— 000 000 Assembly 1

1 000 000 � Subassembly 2 A

2 000 000 � � Part 1

� If you order the assembly, items 1 and 2 will be included.� If you order item 1, item 2 will be included.� If you order item 2, you will receive item 2 only.

The number in the Quantity column is the quantity required per unit,assembly, or subassembly. The code AR (As Required) is used if thepart number is a bulk item ordered in quantities or if the quantity perassembly depends on the product version or model.

Letters in the Note column refer to notes at the end of each parts list.Notes contain important information about usage and ordering. Specialattention should be given to notes.

1. Introduction

Using the Illustrated PartsList

Parts8-2


106 915CIssued 11/97

Manual 21-27

See Figure 8-1.


— 176 501 Gun, waterborne, manual, WM-1 1

1 228 072 � Ring, retaining 1

2 176 510 � Extension 1

3 228 086 � Screw, socket head, M5 x 20 3

4 176 509 � Needle 1 B

5 135 819 � Seal, spring, 0.3125 x 0.1875 x 0.063 1 A,C

6 941 104 � O-ring, Viton 0.563 x 0.375 x 0.094 1 A,C

7 176 506 � Body, packing cartridge 1 A

8 940 138 � O-ring, Viton, blk, 0.438 x 0.563 1 A

9 - - - - - - � Assembly, packing cartridge 1 A

10 244 748 � Gasket, 0.28 x 0.47 x 0.062 1 C

11 176 520 � Spacer 1

12 246 537 � Seal, shaft, 0.375 x 0.25 1 C

13 176 521 � Retainer, packing cartridge 1

14 176 505 � Puller 1

15 981 896 � Screw, captive, 6-32 x 0.75 1

16 176 514 � Slide, rear 1

17 940 105 � O-ring, PTFE, 0.250 x 0.375 x 0.063 2 D

18 176 513 � Wheel, thumb, air adjustment 1

NOTE A: Supplied in packing cartridge service kit, part 176 538.

B: Supplied in fluid needle service kit, part 176 541.

C: Supplied in fluid seal service kit, part 176 545.

D: Supplied in air seal service kit, part 176 550.Continued

2. WM-1 ManualWaterborne Air SprayGun without Hoses

Parts 8-3


106 915CIssued 11/97

Manual 21-27

2127013B

1 2

3

17

4 5 6 7 8 9 10 11 12 13 14

15

16

18

Fig. 8-1 WM-1 manual waterborne air spray gun without hoses

2. WM-1 ManualWaterborne Air SprayGun without Hoses (contd.)

Parts8-4


106 915CIssued 11/97

Manual 21-27

See Figure 8-2.


19 228 073 � Stop, needle 1

20 176 512 � Needle, air 1

21 940 067 � O-ring, Viton, blk, 0.250 x 0.125 x 0.063 1 D

22 940 113 � O-ring, Viton, blk, 0.438 x 0.313 x 0.063 2 C,D

23 176 511 � Body, air valve 1 E

24 940 144 � O-ring, Buna N, 0.625 x 0.500 x 0.063 1 D,E

25 955 076 � Seal, 0.250 x 0.125 x 0.063 1 D,E

26 940 128 � O-ring, Viton, 0.500 x 0.375 x 0.063 1 D,E

27 - - - - - - � Assembly, stem and seal 1 E

28 987 086 � Spring, conical, 0.63 x 0.024 1 E

29 176 524 � Screw, shoulder, 10-32, special 2

30 982 729 � Screw, socket head, 4-40 x 0.31 1

31 176 540 � Trigger 1

32 - - - - - - � Body, gun, waterborne, manual, WM-1 1

33 176 525 � Boot, gun handle 1

34 982 706 � Screw, flat head, 4-40 x 0.25 2

35 972 556 � Connector, male 1

NOTE C: Supplied in fluid seal service kit, part 176 545.

D: Supplied in the air seal service kit, part 176 550.

E: Supplied in the air valve service kit, part 176 542.

Continued


Parts 8-5


106 915CIssued 11/97

Manual 21-27

2127014B

19 20 21

23 24 25 26 27 28

29

30

32

33 35

34

31

22

Fig. 8-2 WM-1 manual waterborne air spray gun without hoses


Parts8-6


106 915CIssued 11/97

Manual 21-27

See Figure 8-3.


36 227 583 � Cover, gun, waterborne, manual, WM-1 1

37 244 752 � Wrench, air spray, electrostatic 1

38 247 639 � Applicator, dielectric grease 1

39 901 905 � Brush 1

40 901 907 � Brush, bristle, nylon 1

41 901 939 � Screwdriver, hex, ball, 0.156 1

42 174 415 � Screwdriver, ball, 0.094 1

43 174 411 � Screwdriver, 6 mm, nutdriver 1

44 174 414 � Screwdriver, 0.25 in. width, slotted 1

2127015B

44

43

42

41

40

39

36

37

38

Fig. 8-3 Tools


Tools Illustration for WM-1Manual Waterborne Air SprayGun without Hoses

Parts 8-7


106 915CIssued 11/97

Manual 21-27

See Figure 8-4.


— 176 526 Gun, waterborne, manual, WM-1 1

1 228 072 � Ring, retaining 1

2 176 510 � Extension 1

3 228 086 � Screw, socket head, M6 x 20 3

4 176 509 � Needle 1 B

5 135 819 � Seal, spring, 0.3125 x 0.1875 x 0.063 1 A,C

6 941 104 � O-ring, Viton 0.563 x 0.375 x 0.094 1 A,C

7 176 506 � Body, packing cartridge 1 A

8 940 138 � O-ring, Viton, blk, 0.438 x 0.563 1 A

9 - - - - - - � Assembly, packing cartridge 1 A

10 244 748 � Gasket, 0.28 x 0.47 x 0.062 1 C

11 176 520 � Spacer 1

12 246 537 � Seal, shaft, 0.375 x 0.25 1 C

13 176 521 � Retainer, packing cartridge 1

14 176 505 � Puller 1

15 981 896 � Screw, captive, 6-32 x 0.75 1

16 176 514 � Slide, rear 1

17 940 105 � O-ring, PTFE, 0.250 x 0.375 x 0.063 2 D

18 176 513 � Wheel, thumb, air adjustment 1

NOTE A: Supplied in packing cartridge service kit, part 176 538.

B: Supplied in fluid needle service kit, part 176 541.

C: Supplied in fluid seal service kit, part 176 545.

D: Supplied in the air seal service kit, part 176 550.Continued

3. WM-1 ManualWaterborne Air SprayGun with Hoses

Parts8-8


106 915CIssued 11/97

Manual 21-27

2127022A

1 2

17

3

4 5 6 7 8 9 10 11 12 13 14

15

16

18

Fig. 8-4 WM-1 manual waterborne air spray gun with hoses

3. WM-1 ManualWaterborne Air SprayGun with Hoses (contd.)

Parts 8-9


106 915CIssued 11/97

Manual 21-27

See Figure 8-5.


19 228 073 � Stop, needle 1

20 176 512 � Needle, air 1

21 940 067 � O-ring, Viton, blk, 0.250 x 0.125 x 0.063 1 D

22 940 113 � O-ring, Viton, blk, 0.438 x 0.313 x 0.063 2 C,D

23 - - - - - - � Hose, fluid (with fittings) 1 F

24 709 774 � � O-ring, 0.375 x 0.500 x 0.063 1 F

25 - - - - - - � Body, gun, waterborne, manual, WM-1 1

26 176 525 � Boot, gun handle 1

27 982 706 � Screw, flat head, 4-40 x 0.25 2

28 972 556 � Connector, male 1

29 - - - - - - � Hose, air (with fittings) 1 G

30 - - - - - - � � Clamp, hose 2 G

31 176 540 � Trigger 1

32 176 524 � Screw, socket head, 4-40 x 0.31 1

33 982 729 � Screw, shoulder, 10-32, special 2

34 987 086 � Spring, conical, 0.63 x 0.024 1 E

35 - - - - - - � Assembly, stem and seal 1 E

36 940 128 � O-ring, Viton, 0.500 x 0.375 x 0.063 1 D,E

37 955 076 � Seal, 0.250 x 0.125 x 0.063 1 D,E

38 940 144 � O-ring, Buna N, 0.625 x 0.500 x 0.063 1 D,E

39 176 511 � Body, air valve 1 E

NOTE C: Supplied in fluid seal service kit, part 176 545.

D: Supplied in the air seal service kit, part 176 550.

E: Supplied in the air valve service kit, part 176 542.

F: Supplied as part of the 8- or 12-meter fluid hose accessories, parts 245 656 and 245 650, respectively.

G: Supplied as part of the 8- or 12-meter air hose accessories, parts 245 656 and 245 650, respectively.

Continued


Parts8-10


106 915CIssued 11/97

Manual 21-27

2127023A

19 20 21

24 23

25

26

27

28

29

30

31

32

33

343536373839

22

Fig. 8-5 WM-1 manual waterborne air spray gun with hoses


Parts 8-11


106 915CIssued 11/97

Manual 21-27

See Figure 8-6.


40 227 583 � Cover, gun, waterborne, manual, WM-1 1

41 244 752 � Wrench, air spray, electrostatic 1

42 247 639 � Applicator, dielectric grease 1

43 901 905 � Brush 1

44 901 907 � Brush, bristle, nylon 1

45 901 939 � Screwdriver, hex, ball, 0.156 1

46 174 415 � Screwdriver, ball, 0.094 1

47 174 411 � Screwdriver, 6 mm, nutdriver 1

48 174 414 � Screwdriver, 0.25 in. width, slotted 1

2127024A

40

41

42

43

44

45

46

47

48

Fig. 8-6 Tools


Tools Illustration for WM-1Manual Waterborne Air SprayGun with Hoses

Parts8-12


106 915CIssued 11/97

Manual 21-27

Nordson Corporation available service kits for the WM-1 spray gun aredescribed here.

See Figure 8-7.


— 176 541 Kit, service, needle, fluid 1

1 - - - - - - � Needle, fluid, gun, waterborne, manual, WM-1 1

NS - - - - - - � Adhesive, thread locking, 0.50 ml 1

NS: Not Shown

See Figure 8-7.


— 176 538 Kit, service, packing cartridge 1 A

2 - - - - - - � Seal, spring, 0.3125 x 0.1875 x 0.063 1

3 - - - - - - � O-ring, Viton, 0.563 x 0.375 x 0.094 1

4 - - - - - - � Body, packing cartridge 1

5 - - - - - - � O-ring, Viton, blk, 0.438 x 0.563 1

6 - - - - - - � Assembly, packing cartridge 1

NS - - - - - - � Adhesive, thread locking, 0.50 ml 1

NS - - - - - - � Grease, dielectric 1

NOTE A: Supplied assembled.

NS: Not Shown

2127016B

1 2 3 4 5 6

Fig. 8-7 Packing cartridge and fluid needle service kits

4. Kit Parts List

Fluid Needle Service Kit

Packing Cartridge Service Kit

Parts 8-13


106 915CIssued 11/97

Manual 21-27

See Figure 8-8.


— 176 542 Kit, service, air valve 1 A

1 - - - - - - � Spring, conical 1

2 - - - - - - � Assembly, air valve stem and seal 1

3 - - - - - - � O-ring, Viton 0.500. x 0.375 x 0.063 1

4 - - - - - - � Seal, spring, PTFE, 0.250 x 0.125 x 0.063 1

5 - - - - - - � O-ring, Buna-N, 0.625 x 0.500 x 0.063 1

6 - - - - - - � Body, air valve 1

NOTE A: Supplied assembled.

2127017B

6 5 4 3 2 1

Fig. 8-8 Air valve service kit

Air Valve Service Kit

Parts8-14


106 915CIssued 11/97

Manual 21-27

See Figure 8-9.


— 176 545 Kit, service, fluid seal 1

1 - - - - - - � Seal, spring, 0.1875 x 0.3125 x 0.063 1

2 - - - - - - � O-ring, Viton, 0.563 x 0.375 x 0.094 1

3 - - - - - - � Gasket, 0.28 x 0.47 x 0.062 1

4 - - - - - - � Seal, shaft, 0.250 x 0.375 1

6 - - - - - - � O-ring, Viton, blk, 0.438 x 0.313 x 0.063 2

See Figure 8-9.


— 176 550 Kit, service, air seal 1

5 - - - - - - � O-ring, Viton, blk, 0.125 x 0.250 1


7 - - - - - - � O-ring, PTFE, 0.250 x 0.375 x 0.06 2


9 - - - - - - � Seal, spring, 0.125 x 0.250 x 0.063 1

10 - - - - - - � O-ring, Buna-N, 0.500 x 0.625 x 0.063 1

Fluid Seal Service Kit

Air Seal Service Kit

Parts 8-15


106 915CIssued 11/97

Manual 21-27

2127018B

7

6

1 2 3 4

5

10 9 8

Fig. 8-9 Fluid and air seal service kits

Fluid and Air Seal ServiceKits Illustration

Parts8-16


106 915CIssued 11/97

Manual 21-27

See Figure 8-1. Nordson Corporation has two lengths of fluid orgrounded air hoses available for the WM-1 spray gun. Each hose (fluidor air) is available in 8-meter (26-foot) or 12-meter (39-foot) lengths andis supplied with appropriate fittings for attaching the WM-1 spray gun toyour fluid delivery system.

See Figure 8-10.


— 245 656 Hose, fluid, 8 m (26 ft) 1

— 245 650 Hose, fluid, 12 m (39 ft) 1

1 - - - - - - � Hose, fluid 1

2 709 774 � � O-ring, Kalrez, 0.375 x 0.500 x 0.063 1

NS - - - - - - � Grease, dielectric 1

NS: Not Shown

See Figure 8-10.


— 176 546 Hose, air, 8 m (26 ft) 1

— 238 996 Hose, air, 12 m (39 ft) 1

3 - - - - - - � Hose, air 1

4 - - - - - - � Clamp, hose 2

5 - - - - - - � Fitting, barb, 5/16 x 1/4 NPSM 2

5. Accessory Parts List

Fluid Hose Accessory

Grounded Air HoseAccessory

Parts 8-17


106 915CIssued 11/97

Manual 21-27

2127019B

2 1

345 54

Fig. 8-10 Fluid and grounded air hose accessories

Fluid and Grounded Air HoseAccessories Illustration

Parts8-18


106 915CIssued 11/97

Manual 21-27


106 915CIssued 11/97

Manual 21-27

Section 9

Specifications

Specifications9-0


106 915CIssued 11/97

Manual 21-27

Specifications 9-1


106 915CIssued 11/97

Manual 21-27

Section 9Specifications

See Figure 9-1.

NOTE: All dimensions are in millimeters (inches) unless otherwisespecified in the figure.

2127020B

307.97 mm(12.13 in.)

223.84 mm(8.81 in.)

54.00 mm(2.13 in.)

Fig. 9-1 WM-1 spray gun dimensions

400 gm (14 oz)

NOTE: Weight does not include the fluid and air hoses.

1. Physical

Dimensions

Weight

Specifications9-2


106 915CIssued 11/97

Manual 21-27

Air Pressure (at the spray gun) bar (psi)

Maximum working pressure 7 (100)

Average operating pressure range 1.70−2.72 (25−40)

Particulate free: 5 microns maximum

Fluid Pressure (at the spray gun) bar (psi)

Maximum working pressure 5.17 (75)

Average operating pressure range 0.68−1.70 (10−25)

Zahn 2 cup: 567 gm/min (20 oz/min) at 20 seconds

Fluid Temperature (through the spray gun) �C (�F)

Maximum 49 (120)

2. Operating Capacities

Air

Air Quality

Fluid

Fluid Flow Rate

Fluid Temperature

DECLARATION of CONFORMITY

PRODUCT:

32/64 Configurable Pumps (Air powered, demand, piston pump.)

APPLICABLE DIRECTIVES:

89/392/EEC (Machinery)

EN292EN294

This product has been manufactured according to good engineering practice.

The product specified conforms to the directive and standards described above.

STANDARDS USED TO VERIFY COMPLIANCE:

Date: 20 May 96

Nordson Corporation � Westlake, Ohio

O-OC

PRINCIPLES:

Lou KochLiquid Focus Factory Manager

Date: 24 May 96Woodie FrancisEngineering Manager AutomotiveLiquid Systems Group

Watermark 1 Model WM-1 Waterborne Air Spray Gun...WARNING: Hot! Risk of burns. Wear heat-protective...

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Transcript of Watermark 1 Model WM-1 Waterborne Air Spray Gun...WARNING: Hot! Risk of burns. Wear heat-protective...