Nordson WM-1 Customer Product Manual

Waterborne air spray gun

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1 Model WM-1

Waterborne Air Spray Gun

Customer Product Manual

Part 106 915C

NORDSON CORPORATION

AMHERST, OHIO

USA

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Page 1 Watermark 1 Model WM-1 Waterborne Air Spray Gun Customer Product Manual Part 106 915C NORDSON CORPORATION AMHERST, OHIO...
Page 2 Amherst, OH 44001 Notice This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1995. No part of this 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.
Page 3: Table Of Contents
....... . 3. Nordson Air and Fluid Hose Installations .....
Page 4 ......2. WM-1 Manual Waterborne Air Spray Gun without Hoses ..
Page 9: Introduction
Safety Section 1 Safety This section contains general safety instructions for using your Nordson 1. Introduction equipment. Task- and equipment-specific warnings are included in other sections of this manual where appropriate. Note all warnings and follow all instructions carefully. Failure to do so may result in personal injury, death, or property damage.
Page 10 Failure to observe this warning may result in serious injury or death. WARNING: Injection. Do not point this device at yourself or other personnel. Failure to observe this warning may result in serious injury or death. A1EN−03−[SF−LIQD]−3 Issued 11/95 E 1995 Nordson Corporation All rights reserved...
Page 11: Qualified Personnel
Unintended uses may result from taking the following actions: making changes to equipment that have not been recommended or described in this manual or using parts that are not genuine Nordson replacement parts failing to make sure that auxiliary equipment complies with approval...
Page 12: Installation
Safety Read the installation section of all system component manuals before 5. Installation installing your Nordson equipment. A thorough understanding of system components and their requirements will help you to install this equipment safely and efficiently. WARNING: Failure to follow these safety procedures can result in personal injury or death.
Page 13: Operation
Make sure all devices are fully functional. Do not operate the system if these devices are not working properly. Do not deactivate or bypass automatic safety interlocks, locked-out electrical disconnects, or pneumatic valves. A1EN−03−[SF−LIQD]−3 Issued 11/95 E 1995 Nordson Corporation All rights reserved...
Page 14 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. A1EN−03−[SF−LIQD]−3 Issued 11/95 E 1995 Nordson Corporation All rights reserved...
Page 16: Action In The Event Of A System Or Component Malfunction
Allow only qualified personnel to perform maintenance, troubleshooting, 9. Maintenance and Repair and repair tasks. Only persons who are properly trained and familiar with Nordson equipment are permitted to service this equipment. Always wear appropriate protective clothing and use safety devices when working on this equipment.
Page 17: Manual
Never troubleshoot the power supply without first disconnecting all external power supplies and discharging the high-voltage capacitors with an insulated screwdriver. Ground electrodes and electrostatic cable ends before touching them. A1EN−03−[SF−LIQD]−3 Issued 11/95 E 1995 Nordson Corporation All rights reserved...
Page 18: Material And Solvent Precautions
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 Equipment Manufacturers Association (NSEMA) wallet card to give to emergency medical staff in the event of an injection injury. These cards are supplied with the equipment.
Page 19 Use nonhalogenated solvents. Contact your solvent supplier to determine whether your existing materials and solvents contain halogenated hydrocarbons or to obtain a suitable, nonhalogenated hydrocarbon solvent for cleaning and flushing your system. A1EN−03−[SF−LIQD]−3 Issued 11/95 E 1995 Nordson Corporation All rights reserved...
Page 20 Contact your coatings, solvent, or adhesive supplier for a nonhalogenated solvent to thoroughly flush the entire system before operating it. If you must continue to use halogenated hydrocarbon solvents, consult your Nordson representative about compatible Nordson components. A1EN−03−[SF−LIQD]−3 Issued 11/95...
Page 21: Disposal
Methylene Chlorobromide Freon Methylene Chloride Propyl Iodide 1-1-1 Trichloroethane Monochlorobenzene Orthodichlorobenzene Perchloroethylene Trichloroethylene Dispose of equipment and materials used in operation and cleaning 11. Disposal according to your local regulations. A1EN−03−[SF−LIQD]−3 Issued 11/95 E 1995 Nordson Corporation All rights reserved...
Page 25: Introduction
60 kV. Operating at higher voltages will damage the spray gun and decrease the life of internal components. The WM-1 spray gun is designed to operate at a maximum voltage of 60 kV. The Nordson EPS6 power supply is specially designed to provide electrostatic power to the spray gun.
Page 26: Connections And Controls
Trigger Controls coating material flow from the WM-1 spray gun NOTE: Always fully draw the trigger during WM-1 spray gun operation and always lock out the trigger when the spray gun is not in use. Air flow will energize the power system.
Page 27 Description 2. Connections and Controls (contd.) 2127003B Fig. 2-1 Side view of the WM-1 spray gun 1. Thumb wheel 3. Trigger lock 4. Trigger 2. Male connector 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 31: Introduction
Before performing these tasks, make sure you have: Removed the WM-1 spray gun, tools, and Nordson gun cover from the shipping container. Obtained a standard nozzle (fluid tip and air cap) for the WM-1 spray gun. Installed a Nordson air hose on the grounded supply air regulator.
Page 32 Installation 1. Introduction (contd.) 2127004C Fig. 3-1 WM-1 spray gun installation 1. Retaining ring 7. Dielectric grease application 12. Connector 2. Air cap 8. Fluid hose 13. Trigger 3. Fluid tip 9. Hose strain relief lug 14. Screw (2) 4. Extension 10.
Page 33: Standard Nozzle Installation
CAUTION: Do not overtighten parts. Failure to observe this precaution will result in equipment damage. 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 tighten another quarter turn maximum.
Page 34: Nordson Air And Fluid Hose Installations
Installation Nordson air and fluid hoses for the WM-1 manual spray gun are both 3. Nordson Air and Fluid available in either 8-meter (26-foot) and 12-meter (39-foot) lengths. Hose Installations Nordson high-dielectric strength fluid hoses each have an attached -in.
Page 37: Introduction
Failure to observe this warning may result in serious injury and equipment damage. WARNING: Connecting more than one spray gun to a fluid delivery system not approved by the Nordson Corporation may be unsafe and in possible violation of National Fire Protection Agency (NFPA) regulations.
Page 38: Preparation
Failure to observe this warning may result in personal injury, death, or equipment damage. To set the fluid flow rate of the WM-1 spray gun, perform the following steps: 1. See Figure 4-1. Disconnect the grounded air hose (2) from the connector (3).
Page 39 If the flow rate is too low, repeat steps 3 and 4 with the next larger size fluid tip. 2127005B Fig. 4-1 WM-1 spray gun adjustments 1. Thumb wheel 4. Trigger lock 2. Grounded air hose 5. Trigger 3.
Page 40: Spraying The Substrate
5. Repeat steps 2, 3, and 4 until the desired spray pattern and atomization is obtained. If necessary, adjust your delivery system fluid 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.
Page 43 Failure to observe this warning may result in serious injury or death. To keep the WM-1 spray gun operating properly, set up and follow a regular cleaning schedule. Proper use of the disposable covers will reduce cleanup time. A dirty or material-coated extension will allow the electrostatic charge to bleed back toward the grounded handle.
Page 44 Maintenance 5. Unlock the trigger lock. Flush the WM-1 gun into a suitably grounded 2. Maintenance (contd.) container. 6. Turn off the solvent supply and relieve pressure. Disconnect the fluid and air hoses. WARNING: Do not point the spray gun toward you or other personnel.
Page 47 This section contains troubleshooting procedures and identifies common spray pattern faults. These procedures cover only the most common problems that you may encounter. If you cannot solve the problem with the information given here, contact your local Nordson representative for help. Problem...
Page 48: Troubleshooting Procedures
Reduce pressures. too high Pattern/horn air flow too high Adjust the pattern/horn air. 4. Excessive dry spray WM-1 spray gun held too far away Move closer to the substrate. from substrate Pattern/horn air too high Adjust the pattern/horn air. Coating material flow too low Increase coating material flow rate or decrease air pressure.
Page 49 Low fluid pressure If within the fluid pressure limit of the spray gun, slowly raise fluid pressure. NOTE: The WM-1 spray gun is rated for a fluid pressure of 5.17 bar (75 psi) maximum. Coating material too viscous Check that coating material is mixed properly.
Page 50: Spray Pattern Faults
Troubleshooting Figure 6-1 shows some common spray pattern faults of the WM-1 spray 3. Spray Pattern Faults gun. Troubleshooting procedures for these and other common film-build faults are listed in Table 6-1. If you cannot solve your problems with the information given here, contact your local Nordson representative for help.
Page 53: Introduction
3. Relieve coating material and air pressure within the fluid delivery system. 4. See Figure 7-1. Disconnect the grounded air hose (4) from the WM-1 spray gun connector (5). 5. Loosen the captive screw (1) securing the rear slide (2). Remove the rear slide by sliding upward.
Page 54 1. Introduction (contd.) the 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.
Page 55: Disassembly
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 remove the fluid tip (4). 3. Soak the fluid tip (4), air cap (5) and retaining ring (6) in an appropriate cleaning solution.
Page 56: Packing Cartridge And Fluid Needle
1. See Figure 7-3. Unscrew and remove the puller (12). 2. Use the supplied Nordson wrench to unscrew the packing cartridge retainer (11) from the extension (1). 3. Remove the shaft seal (10) from the packing cartridge retainer (11).
Page 57: Air Valve
O-ring (3) from the needle. 6. Remove the thumb wheel (5) from the gun body (6). Remove the O-rings (4). 7. Clean, inspect, and replace any worn or damaged parts. 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 58 2. Air needle 7. O-ring 11. Stem and seal assembly 3. O-ring 8. O-ring 12. Air valve body 4. O-ring (2) 9. Seal 13. Needle stop 5. Thumb wheel Manual 21-27 106 915C E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 59: Assembly
Repair The assembly procedure for the WM-1 spray gun is described here. 3. Assembly Packing Cartridge and Fluid To assemble the packing cartridge and fluid needle into the extension, perform the following steps: Needle 1. See Figure 7-5. Lubricate and install the O-ring (6) onto the packing cartridge assembly (7).
Page 60 9. Spacer 15. Dielectric grease application 4. O-ring 10. Shaft seal 16. Dielectric grease application 5. Packing cartridge body 11. Packing cartridge retainer 6. O-ring 12. Puller Manual 21-27 106 915C E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 61: Air Valve
(1). Continue turning the thumbwheel upward until it stops. 6. Install the needle stop (13) into the air needle (2) access hole. 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 62 7-10 Repair Thumb Wheel and Air Needle (contd) 2127012C Fig. 7-6 WM-1 spray gun assembly 1. Captive screw 8. Grounded air hose connector 15. Fluid tip 2. Rear slide 9. Connector 16. Air cap 3. Gun body 10. Trigger 17. Retaining ring 4.
Page 63: Final Assembly
7-11 Repair Final Assembly To complete the assembly of the WM-1 spray gun, perform the following steps: 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).
Page 64 7-12 Repair Final Assembly 2. Trigger the WM-1 spray gun. Thread the fluid tip (15) into the (contd) extension (14) until the fluid tip is seated, and then tighten another quarter turn maximum. Use the Nordson-supplied wrench to secure the tip. Do not overtighten.
Page 67: Introduction
Parts Section 8 Parts To order parts, call the Nordson Customer Service Center or your local 1. Introduction Nordson representative. Use this five-column parts list, and the accompanying illustration, to describe and locate parts correctly. Using the Illustrated Parts Numbers in the Item column correspond to numbers that identify parts in illustrations following each parts list.
Page 68: Manual Waterborne Air Spray Gun Without Hoses
Waterborne Air Spray Gun without Hoses Item Part Description Quantity Note — 176 501 Gun, waterborne, manual, WM-1 228 072 S Ring, retaining 176 510 S Extension 228 086 S Screw, socket head, M5 x 20 176 509 S Needle 135 819 S Seal, spring, 0.3125 x 0.1875 x 0.063...
Page 69 Parts 2. WM-1 Manual Waterborne Air Spray Gun without Hoses (contd.) 2127013B Fig. 8-1 WM-1 manual waterborne air spray gun without hoses 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 70 982 729 S Screw, socket head, 4-40 x 0.31 176 540 S Trigger - - - - - - S Body, gun, waterborne, manual, WM-1 176 525 S Boot, gun handle 982 706 S Screw, flat head, 4-40 x 0.25...
Page 71 Parts 2. WM-1 Manual Waterborne Air Spray Gun without Hoses (contd.) 23 24 25 2127014B Fig. 8-2 WM-1 manual waterborne air spray gun without hoses 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 72 Gun without Hoses (contd.) Item Part Description Quantity Note 227 583 S Cover, gun, waterborne, manual, WM-1 244 752 S Wrench, air spray, electrostatic 247 639 S Applicator, dielectric grease 901 905 S Brush 901 907 S Brush, bristle, nylon 901 939 S Screwdriver, hex, ball, 0.156...
Page 73: Manual Waterborne Air Spray Gun With Hoses
Waterborne Air Spray Gun with Hoses Item Part Description Quantity Note — 176 526 Gun, waterborne, manual, WM-1 228 072 S Ring, retaining 176 510 S Extension 228 086 S Screw, socket head, M6 x 20 176 509 S Needle 135 819 S Seal, spring, 0.3125 x 0.1875 x 0.063...
Page 74 Parts 3. WM-1 Manual Waterborne Air Spray Gun with Hoses (contd.) 2127022A Fig. 8-4 WM-1 manual waterborne air spray gun with hoses Manual 21-27 106 915C E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 75 S Hose, fluid (with fittings) 709 774 S S O-ring, 0.375 x 0.500 x 0.063 - - - - - - S Body, gun, waterborne, manual, WM-1 176 525 S Boot, gun handle 982 706 S Screw, flat head, 4-40 x 0.25...
Page 76 8-10 Parts 3. WM-1 Manual Waterborne Air Spray Gun with Hoses (contd.) 2127023A Fig. 8-5 WM-1 manual waterborne air spray gun with hoses Manual 21-27 106 915C E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 77 Gun with Hoses (contd.) Item Part Description Quantity Note 227 583 S Cover, gun, waterborne, manual, WM-1 244 752 S Wrench, air spray, electrostatic 247 639 S Applicator, dielectric grease 901 905 S Brush 901 907 S Brush, bristle, nylon 901 939 S Screwdriver, hex, ball, 0.156...
Page 78: Kit Parts List
8-12 Parts Nordson Corporation available service kits for the WM-1 spray gun are 4. Kit Parts List described here. Fluid Needle Service Kit See Figure 8-7. Item Part Description Quantity Note — 176 541 Kit, service, needle, fluid - - - - - -...
Page 79: Air Valve Service Kit
S O-ring, Buna-N, 0.625 x 0.500 x 0.063 - - - - - - S Body, air valve NOTE A: Supplied assembled. 2127017B Fig. 8-8 Air valve service kit 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 80: Fluid Seal Service Kit
- - - - - - S Seal, spring, 0.125 x 0.250 x 0.063 - - - - - - S O-ring, Buna-N, 0.500 x 0.625 x 0.063 Manual 21-27 106 915C E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 81: Fluid And Air Seal Service Kits Illustration
8-15 Parts Fluid and Air Seal Service Kits Illustration 10 9 8 2127018B Fig. 8-9 Fluid and air seal service kits 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 82: Accessory Parts List
See Figure 8-1. Nordson Corporation has two lengths of fluid or 5. Accessory Parts List grounded air hoses available for the WM-1 spray gun. Each hose (fluid or air) is available in 8-meter (26-foot) or 12-meter (39-foot) lengths and is supplied with appropriate fittings for attaching the WM-1 spray gun to your fluid delivery system.
Page 83: Fluid And Grounded Air Hose Accessories Illustration
8-17 Parts Fluid and Grounded Air Hose Accessories Illustration 2127019B Fig. 8-10 Fluid and grounded air hose accessories 106 915C Manual 21-27 E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 87 (2.13 in.) 307.97 mm (12.13 in.) 223.84 mm (8.81 in.) 2127020B Fig. 9-1 WM-1 spray gun dimensions Weight 400 gm (14 oz) NOTE: Weight does not include the fluid and air hoses. 106 915C Manual 21-27 E 1997 Nordson Corporation...
Page 88 0.68−1.70 (10−25) Fluid Flow Rate Zahn 2 cup: 567 gm/min (20 oz/min) at 20 seconds Fluid Temperature Fluid Temperature (through the spray gun) _C (_F) Maximum 49 (120) Manual 21-27 106 915C E 1997 Nordson Corporation All rights reserved Issued 11/97...
Page 89 This product has been manufactured according to good engineering practice. The product specified conforms to the directive and standards described above. Date: 20 May 96 Lou Koch Liquid Focus Factory Manager Date: 24 May 96 Woodie Francis Engineering Manager Automotive Liquid Systems Group Nordson Corporation S Westlake, Ohio O-OC...

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