e.dot Gun Customer Product Manual Issued 9/06 NORDSON CORPORATION DULUTH, GEORGIA USA www.nordson.com
For CE Declaration, refer to melter manual. Nordson Corporation welcomes requests for information, comments, and inquiries about its products. General information about Nordson can be found on the Internet using the following address: http://www.nordson.com. Address all correspondence to: Nordson Corporation Attn: Customer Service 11475 Lakefield Drive Duluth, GA 30097 Notice This is a Nordson Corporation publication which is protected by copyright. Original copyright date 2003. 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. Trademarks AccuJet, AeroCharge, Apogee, AquaGuard, Asymtek, Automove, Baitgun, Blue Box, CanWorks, Century, CF, Clean Coat, CleanSleeve, CleanSpray, ColorMax, Control Coat, Coolwave, Cross-Cut, Cyclo-Kinetic, Dispensejet, DispenseMate, DuraBlue, Durafiber, Dura-Screen, Durasystem, Easy Coat, Easymove Plus, Ecodry, Econo-Coat, e.dot, EFD, e stylized, ETI, Excel 2000, Fillmaster, FlexiCoat, Flexi-Spray, Flex-O-Coat, Flow Sentry, Fluidmove, FoamMelt, FoamMix, Heli-flow, Helix, Horizon, Hot Shot, icontrol, iflow, Isocoil, Isocore, Iso-Flo, itrax, Kinetix, Little Squirt, LogiComm, Magnastatic, March, MEG, Meltex, Microcoat, Micromark, MicroSet, Millennium, Mini Squirt, Mountaingate, MultiScan, Nordson, OptiMix, Package of Values, Pattern View, PermaFlo, Plasmod, Porous Coat, PowderGrid, Powderware, Printplus, Prism, ProBlue, Pro-Flo, ProLink, Pro-Meter, Pro-Stream, RBX, Rhino, Saturn, Scoreguard, Seal Sentry, Select Charge, Select Coat, Select Cure, Slautterback, Smart-Coat, Solder Plus, Spectrum, Speed-Coat, SureBead, Sure Clean, Sure Coat, Sure-Max, TRAK, Tracking Plus, Trends, Tribomatic, Ultra, Ultrasaver, UpTime, Vantage, Veritec, VersaBlue, Versa-Coat, Versa-Screen, Versa-Spray, Walcom, Watermark, and When you expect more. are registered trademarks of Nordson Corporation. Accubar, Advanced Plasma Systems, AeroDeck, AeroWash, AltaBlue, AquaCure, ATS, Auto-Flo, AutoScan, Best Choice, Blue Series, Check Mate, Classicblue, Colo-on-Demand, Controlled Fiberization, Control Weave, CPX, DispensLink, Dry Cure, DuraBraid, DuraCoat, DuraDrum, DuraPail, Easy Clean, EasyOn, Eclipse, E-Nordson, Equi=Bead, ESP, Fill Sentry, G Net, G Site, HDLV, ion, Iso-Flex, itrend, Lacquer Cure, Lean Cell, Maverick, Maxima, MicroFin, MicroMax, MiniBlue, MiniEdge, Minimeter, Multifil, Myritex, OptiStroke, PatternPro, PCI, Powder Pilot, Powercure, Primarc, Process Sentry, Prodigy, Pulse Spray, Quad Cure, Ready Coat, Royal Blue, Select Series, Sensomatic, Shaftshield, SheetAire, Smart, SolidBlue, Spectral, Spectronic, SpeedKing, Spray Works, Summit, Sure Brand, SureMix, SureSeal, Sure Wrap, Swirl Coat, Tempus, ThruWave, Trade Plus, TrueBlue, Ultrasmart, Universal, VersaDrum, VersaPail, Vista, Web Cure, and 2 Rings (Design) are trademarks of Nordson Corporation. Designations and trademarks stated in this document may be brands that, when used by third parties for their own purposes, could lead to violation of the owners rights. Viton is a registered trademark of DuPont Dow Elastomers. L.L.C. 2006 Nordson Corporation All rights reserved
Table of Contents i Table of Contents Safety........................................................ 1 Safety Alert Symbols............................................ 1 Responsibilities of the Equipment Owner.......................... 2 Safety Information............................................ 2 Instructions, Requirements, and Standards...................... 2 User Qualifications........................................... 3 Applicable Industry Safety Practices.............................. 3 Intended Use of the Equipment................................ 3 Instructions and Safety Messages.............................. 4 Installation Practices.......................................... 4 Operating Practices.......................................... 5 Maintenance and Repair Practices............................. 5 Equipment Safety Information.................................... 6 Equipment Shutdown......................................... 6 General Safety Warnings and Cautions......................... 7 Other Safety Precautions...................................... 10 First Aid..................................................... 10 Safety Labels and Tags......................................... 11 Description................................................... 12 Intended Uses................................................. 12 Unintended Uses............................................... 12 Auxiliary Devices and Spare Parts................................ 13 Installation.................................................... 14 Installation Guidelines........................................... 14 Mounting.................................................... 14 Hydraulic Connections........................................ 14 Mounting the Gun.............................................. 15 Mounting the Gun Driver/Pattern Control........................... 16 Connecting the Hose............................................ 16 Connecting Hose Cordsets...................................... 17 Connecting an EPC-30 to the e driver2, 3, or 4 (Optional)............ 21 Operation..................................................... 22 Melter Adjustment.............................................. 22 Driver Electrical Adjustment...................................... 22 e driver and e driver2, 3, and 4................................. 22 LA4400..................................................... 22 Dot Size Adjustment............................................ 23 e driver and e driver2, 3, and 4................................. 23 LA4400..................................................... 23 Pattern Control Adjustment...................................... 23 EPC-30..................................................... 23 LA4400..................................................... 23 Stroke Adjustment.............................................. 24 2006 Nordson Corporation
ii Table of Contents Troubleshooting.............................................. 25 Troubleshooting Table........................................... 25 Maintenance.................................................. 28 Cleaning/Replacing the Nozzle and the Armature................... 28 Rezeroing the Gun............................................. 31 Changing the Filter............................................. 32 Removing the Cordset.......................................... 34 Installing the Cordset........................................... 34 Parts......................................................... 36 e.dot Gun Components.......................................... 36 Gun Service Kits............................................... 38 Nozzles....................................................... 38 Filters......................................................... 38 e.dot Small Diameter Hoses..................................... 38 e drivers...................................................... 39 e driver cables................................................. 39 Technical Data................................................ 40 Gun Specifications.............................................. 40 Gun Dimensions............................................... 40 Gun Wiring Diagram............................................ 41 Cable Wiring Diagrams.......................................... 42 2006 Nordson Corporation
e.dot Gun 1 e.dot Gun Safety Read this section before using the equipment. This section contains recommendations and practices applicable to the safe installation, operation, and maintenance (hereafter referred to as use ) of the product described in this document (hereafter referred to as equipment ). Additional safety information, in the form of task-specific safety alert messages, appears as appropriate throughout this document. WARNING: Risk of Burns! Do not remove the nozzle when the system is pressurized. Removing the nozzle when the system is pressurized will cause hot melt to free-flow from the gun. Relieve system pressure before removing the nozzle. Failure to relieve system pressure can result in personal injury. WARNING: Failure to follow the safety messages, recommendations, and hazard avoidance procedures provided in this document can result in personal injury, including death, or damage to equipment or property. Safety Alert Symbols The following safety alert symbol and signal words are used throughout this document to alert the reader to personal safety hazards or to identify conditions that may result in damage to equipment or property. Comply with all safety information that follows the signal word. WARNING: Indicates a potentially hazardous situation that, if not avoided, can result in serious personal injury, including death. CAUTION: Indicates a potentially hazardous situation that, if not avoided, can result in minor or moderate personal injury. CAUTION: (Used without the safety alert symbol) Indicates a potentially hazardous situation that, if not avoided, can result in damage to equipment or property. 2006 Nordson Corporation
2 e.dot Gun Responsibilities of the Equipment Owner Equipment owners are responsible for managing safety information, ensuring that all instructions and regulatory requirements for use of the equipment are met, and for qualifying all potential users. Safety Information Research and evaluate safety information from all applicable sources, including the owner-specific safety policy, best industry practices, governing regulations, material manufacturer s product information, and this document. Make safety information available to equipment users in accordance with governing regulations. Contact the authority having jurisdiction for information. Maintain safety information, including the safety labels affixed to the equipment, in readable condition. Instructions, Requirements, and Standards Ensure that the equipment is used in accordance with the information provided in this document, governing codes and regulations, and best industry practices. If applicable, receive approval from your facility s engineering or safety department, or other similar function within your organization, before installing or operating the equipment for the first time. Provide appropriate emergency and first aid equipment. Conduct safety inspections to ensure required practices are being followed. Re-evaluate safety practices and procedures whenever changes are made to the process or equipment. 2006 Nordson Corporation
e.dot Gun 3 User Qualifications Equipment owners are responsible for ensuring that users: receive safety training appropriate to their job function as directed by governing regulations and best industry practices are familiar with the equipment owner s safety and accident prevention policies and procedures receive, equipment- and task-specific training from another qualified individual NOTE: Nordson can provide equipment-specific installation, operation, and maintenance training. Contact your Nordson representative for information possess industry- and trade-specific skills and a level of experience appropriate to their job function are physically capable of performing their job function and are not under the influence of any substance that degrades their mental capacity or physical capabilities Applicable Industry Safety Practices The following safety practices apply to the use of the equipment in the manner described in this document. The information provided here is not meant to include all possible safety practices, but represents the best safety practices for equipment of similar hazard potential used in similar industries. Intended Use of the Equipment Use the equipment only for the purposes described and within the limits specified in this document. Do not modify the equipment. Do not use incompatible materials or unapproved auxiliary devices. Contact your Nordson representative if you have any questions on material compatibility or the use of non-standard auxiliary devices. 2006 Nordson Corporation
4 e.dot Gun Instructions and Safety Messages Read and follow the instructions provided in this document and other referenced documents. Familiarize yourself with the location and meaning of the safety warning labels and tags affixed to the equipment. Refer to Safety Labels and Tags at the end of this section. If you are unsure of how to use the equipment, contact your Nordson representative for assistance. Installation Practices Install the equipment in accordance with the instructions provided in this document and in the documentation provided with auxiliary devices. Ensure that the equipment is rated for the environment in which it will be used and that the processing characteristics of the material will not create a hazardous environment. Refer to the Material Safety Data Sheet (MSDS) for the material. If the required installation configuration does not match the installation instructions, contact your Nordson representative for assistance. Position the equipment for safe operation. Observe the requirements for clearance between the equipment and other objects. Install lockable power disconnects to isolate the equipment and all independently powered auxiliary devices from their power sources. Properly ground all equipment. Contact your local building code enforcement agency for specific requirements. Ensure that fuses of the correct type and rating are installed in fused equipment. Contact the authority having jurisdiction to determine the requirement for installation permits or inspections. 2006 Nordson Corporation
e.dot Gun 5 Operating Practices Familiarize yourself with the location and operation of all safety devices and indicators. Confirm that the equipment, including all safety devices (guards, interlocks, etc.), is in good working order and that the required environmental conditions exist. Use the personal protective equipment (PPE) specified for each task. Refer to Equipment Safety Information or the material manufacturer s instructions and MSDS for PPE requirements. Do not use equipment that is malfunctioning or shows signs of a potential malfunction. Maintenance and Repair Practices Perform scheduled maintenance activities at the intervals described in this document. Relieve system hydraulic and pneumatic pressure before servicing the equipment. De-energize the equipment and all auxiliary devices before servicing the equipment. Use only new factory-authorized refurbished or replacement parts. Read and comply with the manufacturer s instructions and the MSDS supplied with equipment cleaning compounds. NOTE: MSDSs for cleaning compounds that are sold by Nordson are available at www.nordson.com or by calling your Nordson representative. Confirm the correct operation of all safety devices before placing the equipment back into operation. Dispose of waste cleaning compounds and residual process materials according to governing regulations. Refer to the applicable MSDS or contact the authority having jurisdiction for information. Keep equipment safety warning labels clean. Replace worn or damaged labels. 2006 Nordson Corporation
6 e.dot Gun Equipment Safety Information This equipment safety information is applicable to the following types of Nordson equipment: hot melt and cold adhesive application equipment and all related accessories pattern controllers, timers, detection and verification systems, and all other optional process control devices Equipment Shutdown To safely complete many of the procedures described in this document, the equipment must first be shut down. The level of shut down required varies by the type of equipment in use and the procedure being completed. If required, shut down instructions are specified at the start of the procedure. The levels of shut down are: Relieving System Hydraulic Pressure Completely relieve system hydraulic pressure before breaking any hydraulic connection or seal. Refer to the melter-specific product manual for instructions on relieving system hydraulic pressure. De-energizing the System Isolate the system (melter, hoses, guns, and optional devices) from all power sources before accessing any unprotected high-voltage wiring or connection point. 1. Turn off the equipment and all auxiliary devices connected to the equipment (system). 2. To prevent the equipment from being accidentally energized, lock and tag the disconnect switch(es) or circuit breaker(s) that provide input electrical power to the equipment and optional devices. NOTE: Government regulations and industry standards dictate specific requirements for the isolation of hazardous energy sources. Refer to the appropriate regulation or standard. 2006 Nordson Corporation
e.dot Gun 7 Disabling the Guns All electrical or mechanical devices that provide an activation signal to the guns, gun solenoid valve(s), or the melter pump must be disabled before work can be performed on or around a gun that is connected to a pressurized system. 1. Turn off or disconnect the gun triggering device (pattern controller, timer, PLC, etc.). 2. Disconnect the input signal wiring to the gun solenoid valve(s). 3. Reduce the air pressure to the gun solenoid valve(s) to zero; then relieve the residual air pressure between the regulator and the gun. General Safety Warnings and Cautions Table 1 contains the general safety warnings and cautions that apply to Nordson hot melt and cold adhesive equipment. Review the table and carefully read all of the warnings or cautions that apply to the type of equipment described in this manual. Equipment types are designated in Table 1 as follows: HM = Hot melt (melters, hoses, guns, etc.) PC = Process control CA = Cold adhesive (dispensing pumps, pressurized container, and guns) 2006 Nordson Corporation
8 e.dot Gun General Safety Warnings and Cautions (contd) Equipment Type HM Table 1 General Safety Warnings and Cautions Warning or Caution WARNING: Hazardous vapors! Before processing any polyurethane reactive (PUR) hot melt or solvent-based material through a compatible Nordson melter, read and comply with the material s MSDS. Ensure that the material s processing temperature and flashpoints will not be exceeded and that all requirements for safe handling, ventilation, first aid, and personal protective equipment are met. Failure to comply with MSDS requirements can cause personal injury, including death. HM WARNING: Reactive material! Never clean any aluminum component or flush Nordson equipment with halogenated hydrocarbon fluids. Nordson melters and guns contain aluminum components that may react violently with halogenated hydrocarbons. The use of halogenated hydrocarbon compounds in Nordson equipment can cause personal injury, including death. HM, CA WARNING: System pressurized! Relieve system hydraulic pressure before breaking any hydraulic connection or seal. Failure to relieve the system hydraulic pressure can result in the uncontrolled release of hot melt or cold adhesive, causing personal injury. HM WARNING: Molten material! Wear eye or face protection, clothing that protects exposed skin, and heat-protective gloves when servicing equipment that contains molten hot melt. Even when solidified, hot melt can still cause burns. Failure to wear appropriate personal protective equipment can result in personal injury. HM, PC WARNING: Equipment starts automatically! Remote triggering devices are used to control automatic hot melt guns. Before working on or near an operating gun, disable the gun s triggering device and remove the air supply to the gun s solenoid valve(s). Failure to disable the gun s triggering device and remove the supply of air to the solenoid valve(s) can result in personal injury. HM, CA, PC WARNING: Risk of electrocution! Even when switched off and electrically isolated at the disconnect switch or circuit breaker, the equipment may still be connected to energized auxiliary devices. De-energize and electrically isolate all auxiliary devices before servicing the equipment. Failure to properly isolate electrical power to auxiliary equipment before servicing the equipment can result in personal injury, including death. Continued... 2006 Nordson Corporation
e.dot Gun 9 Equipment Type HM, CA, PC Table 1 General Safety Warnings and Cautions (contd) Warning or Caution WARNING: Risk of fire or explosion! Nordson adhesive equipment is not rated for use in explosive environments and should not be used with solvent-based adhesives that can create an explosive atmosphere when processed. Refer to the MSDS for the adhesive to determine its processing characteristics and limitations. The use of incompatible solvent-based adhesives or the improper processing of solvent-based adhesives can result in personal injury, including death. HM, CA, PC WARNING: Allow only personnel with appropriate training and experience to operate or service the equipment. The use of untrained or inexperienced personnel to operate or service the equipment can result in injury, including death, to themselves and others and can damage to the equipment. HM CAUTION: Hot surfaces! Avoid contact with the hot metal surfaces of guns, hoses, and certain components of the melter. If contact can not be avoided, wear heat-protective gloves and clothing when working around heated equipment. Failure to avoid contact with hot metal surfaces can result in personal injury. HM CAUTION: Some Nordson melters are specifically designed to process polyurethane reactive (PUR) hot melt. Attempting to process PUR in equipment not specifically designed for this purpose can damage the equipment and cause premature reaction of the hot melt. If you are unsure of the equipment s ability to process PUR, contact your Nordson representative for assistance. HM, CA CAUTION: Before using any cleaning or flushing compound on or in the equipment, read and comply with the manufacturer s instructions and the MSDS supplied with the compound. Some cleaning compounds can react unpredictably with hot melt or cold adhesive, resulting in damage to the equipment. HM CAUTION: Nordson hot melt equipment is factory tested with Nordson Type R fluid that contains polyester adipate plasticizer. Certain hot melt materials can react with Type R fluid and form a solid gum that can clog the equipment. Before using the equipment, confirm that the hot melt is compatible with Type R fluid. 2006 Nordson Corporation
10 e.dot Gun Other Safety Precautions Do not use an open flame to heat hot melt system components. Check high pressure hoses daily for signs of excessive wear, damage, or leaks. Never point a dispensing handgun at yourself or others. Suspend dispensing handguns by their proper suspension point. First Aid If molten hot melt comes in contact with your skin: 1. Do NOT attempt to remove the molten hot melt from your skin. 2. Immediately soak the affected area in clean, cold water until the hot melt has cooled. 3. Do NOT attempt to remove the solidified hot melt from your skin. 4. In case of severe burns, treat for shock. 5. Seek expert medical attention immediately. Give the MSDS for the hot melt to the medical personnel providing treatment. 2006 Nordson Corporation
e.dot Gun 11 Safety Labels and Tags Figure 1 illustrates the location of the product safety labels and tags affixed to the equipment. Table 2 provides an illustration of the hazard identification symbols that appear on each safety label and tag, the meaning of the symbol, or the exact wording of any safety message. 1 2 Figure 1 Safety labels and tags Table 2 Safety Labels and Tags Item Part Description N/A WARNING: Hot surface! Before touching the gun body, allow the gun to 1 cool, or wear heat-protective gloves. Failure to allow the gun body to cool or to wear heat-protective gloves may cause personal injury. 600137 WARNING: Disconnect power and remove system pressure before 2 disassembly or maintenance. Failure to follow these instructions may result in serious personal injury. 2006 Nordson Corporation
12 e.dot Gun Description The e.dot gun is a compact, high-speed, precision hot melt adhesive gun that is designed for use in applications requiring small dots of adhesive. The e.dot gun is used with the following Nordson components to form an adhesive dot application system: Nordson small diameter e.dot hose e driver, e driver2, 3, 4 (2, 3, or 4 modules), or the LA4400 EPC-30 pattern control (optional) Interface cables that connect the driver/pattern control to the e.dot hose NOTE: The components listed above are ordered and shipped separately from the e.dot gun. Figure 1 illustrates the various combination of drivers/pattern controls (1), cabling (2), small diameter e.dot hot melt hoses (3), and e.dot gun configurations (4) that can be assembled to form a complete adhesive dot application system. Intended Uses Unintended Uses The e.dot gun is designed for use in industrial applications that require the deposition of a precise dot of hot melt adhesive onto a moving substate with small diameter hoses designed and manufactured by Nordson Corporation with electric gun drivers and pattern controllers designed and manufactured by Nordson Corporation The e.dot gun is not designed for industrial applications that require the deposition of a bead of hot melt adhesive onto a moving substate use in explosive environments 2006 Nordson Corporation
e.dot Gun 13 Auxiliary Devices and Spare Parts e.dot guns should only be connected to approved auxiliary devices. Use only new Nordson replacement parts or approved factory refurbished parts. Figure 1 e.dot gun system 2006 Nordson Corporation
14 e.dot Gun Installation Complete the following four steps to install an dot application system: 1. Mount the gun 2. Mount the driver/pattern control 3. Connect the hose 4. Connect cordsets Installation Guidelines Use the following installation guidelines to achieve optimal gun performance. Nozzle clearance 3 6 mm (.12.24 in.) Mounting Mount the gun so that the nozzle will be 3 6 mm ( 1 / 8 1 / 4 in.) from the substrate. Use a 9.5 mm ( 3 / 8 in.) mounting bar. Allow for sufficient room to remove the filter. Filter clearance requirements are illustrated in Technical Data. Provide sufficient space for wrench clearance around the nozzle. Mount the gun on a rigid support that is isolated from external vibrations and that prevents the gun from rotating. Insulate the gun from the support using the insulator provided with the gun. Hydraulic Connections Use only one fitting to connect the e.dot hose to the e.dot gun. Insulate the hose-to-gun joint. 2006 Nordson Corporation
e.dot Gun 15 Mounting the Gun See Figure 2 and Figure 12 or 13. 1. Slide the gun mounting clamps (1) onto a 9-mm ( 3 / 8 in.) mounting bar (2), or disassemble the clamps and reassemble them (with the gun and insulators) onto the mounting bar. Ensure that the insulator (3) is placed between the body of the gun and the clamps. See Figure 3. Alternately, you can mount the gun using the two 4.2 mm (0.165 in.) mounting holes provided in the gun body. 2. Securely tighten the mounting clamp. Figure 2 Mounting the gun on a mounting bar 19.8 mm (0.78 in.) 37.7 mm (1.48 in.) 4.2 mm (0.165 in.) 47.7 mm (1.88 in.) 18.9 mm (0.74 in.) Figure 3 Alternate gun mounting holes 2006 Nordson Corporation
16 e.dot Gun Mounting the Gun Driver/Pattern Control Connecting the Hose Refer to the following product manuals for information about how to mount the gun driver or pattern control. P/N 1032578 e driver P/N 1032560 e driver2, e driver3, and e driver4 P/N 321232 LA4400 NOTE: Refer to the user s guide (P/N 1032556) that is shipped with the e.dot hose for information about installing the hose. CAUTION: Always use two wrenches, one on each fitting to tighten the hose fitting. See Figure 3. 1. Connect the swivel fitting on the e.dot hose to the fitting located on the top or rear of the gun body. Tighten securely. 2. Connect the swivel fitting on the opposite end of the hose to the melter. Refer to the product manual provided with the melter for information about connecting hoses. Figure 4 Connecting the e.dot hose to the e.dot gun 2006 Nordson Corporation
e.dot Gun 17 Connecting Hose Cordsets See Figure 5. 1. Connect the hose cordset to the gun cordset (The gun-end of the hose has only one cordset.). Figure 5 Connecting the hose cordset to the gun cordset See Figure 6. 2. Connect the appropriate interface cable to the hose cordset at the melter-end of the e.dot hose (The melter-end of the hose has two cordsets). 3. Connect the other end of the interface cable to the driver/pattern control as follows: LA4400 or e driver2, 3, or 4 Connect the interface cable plug to the current mode output receptacle. The interface cable is 10 m (33 ft.) in length. e driver Connect the fly-lead end of the interface cable to the input terminal block (removable) that is located on the top of the e driver. Refer to Tables 3, 4 and 5 for wiring information. The interface cable is 15 m (49 ft.) in length. NOTE: Extension cable P/N 1041831 can be used to extend the distance between the driver/pattern control interface cable and the hose cordset by 10 m (33 ft.). 2006 Nordson Corporation
18 e.dot Gun Connecting Hose Cordsets (contd) Figure 6 Connecting the hose cordset to the driver/pattern control 2006 Nordson Corporation
e.dot Gun 19 NOTE: The white/black wire pair is not used. Table 3 Terminal Block Connections for one e.dot gun Terminal Lead SHIELD Shield Blank COIL Red or Black SERIES + COIL Red or Black Table 4 Terminal Block Connections for Two e.dot guns Terminal SHIELD Blank COIL SERIES Purpose Both shields Gun 1 Red lead ( ) Gun 1 Red (+) and Gun 2 Black ( ) + COIL Gun 2 Red (+) Table 5 Terminal Block Connections for Three e.dot guns Terminal SHIELD Blank COIL SERIES Purpose Shield Gun 1 Black ( ) + COIL Gun 3 Red (+) NOTE: Wire three guns in series: Join Gun 1 Red (+) and Gun 2 Black ( ). Join gun 2 Red (+) and Gun 3 Black ( ). Use wire nuts or other suitable means. 2006 Nordson Corporation
20 e.dot Gun Connecting Hose Cordsets (contd) See Figure 7. 4. Connect the e.dot hose cordset to the melter. Refer to the hose user s guide and/or the melter product manual as needed. Figure 7 Connecting the hose cordset to the melter (ProBlue 4 shown) 2006 Nordson Corporation
e.dot Gun 21 Connecting an EPC-30 to the e driver2, 3, or 4 (Optional) An Eclipse EPC-30 pattern control can be connected to the e driver2, 3, and 4 to provide an input signal. Figure 8 illustrates how to wire an e driver2, 3, and 4, which has an internal 24 VDC power supply, to an EPC-30 for a single-gun application. If an e driver2, 3, or 4 without an internal power supply is used, you must provide an external 24 VDC power source to the EPC-30. NOTE: A 24 VDC power supply can be added to e drivers that have no power supply. Order kit P/N 1032603. X7 P/N 1044019 Figure 8 Connecting an EPC-30 to the e driver2, 3, or 4 (single gun wiring shown) 2006 Nordson Corporation
22 e.dot Gun Operation The e.dot gun is now ready for operation. Melter Adjustment Adjust the set-point temperature of the gun to a maximum of 185 C (365 F). Refer to the melter product manual for information about how to adjust the gun set-point temperature. Driver Electrical Adjustment The e.dot gun is designed for optimal performance when operated with the electrical characteristics shown in Table 6. Table 6 e.dot Electrical Characteristics Characteristic Value Peak Current (spike) 2.85 A Peak current time (spike time) 1.35 ms Hold current.75 A e driver and e driver2, 3, and 4 The e driver and e driver2, 3, and 4 are factory set to the values shown above and require no electrical adjustment. LA4400 The LA4400 must be set to the current values shown in Table 6. Refer to the product manual provided with the LA4400 for information about how to adjust these values. 2006 Nordson Corporation
e.dot Gun 23 Dot Size Adjustment e driver The relative size of the adhesive dot that is dispensed from an e.dot gun will increase as the duration that the gun remains open increases. Before operating the e.dot gun, you must set the duration on the driver. On an e driver and an e driver2, 3, and 4, the duration is referred to as DOT Time. On an LA4400, the duration is referred to as On Time. e driver and e driver2, 3, and 4 Use the DOT time switch to set the DOT time. The top switch has a resolution of 0.5 ms and a range of 0 4.5 ms. The bottom switch has a resolution of 0.05 ms and a range of 0 0.45 ms. Together, both switches provide a DOT time range of 0.05 4.95 ms. DOT time adjustment swtiches (e driver and e driver2, 3, 4 only) NOTE: The DOT time function is turned off when both switches are set to 0.0 ms. LA4400 To control and e.dot gun using an LA4400, set the LA4400 to Dotted mode and enter an appropriate On time. Refer to the LA4400 product manual or help screens for additional information. Pattern Control Adjustment EPC-30 Refer to the EPC-30 product manual for information about how to set up a pattern. LA4400 Set the desired gun to operate in Dotted mode. Refer to the LA4400 product manual for information about how to set up a dot pattern. 2006 Nordson Corporation
24 e.dot Gun Stroke Adjustment The gun is equipped with a stroke adjustment dial. The stroke is factory-set to 0.2 mm. Under normal operating conditions, it is not necessary to adjust the stroke of the gun. Stroke adjustment is only required if the gun is disassembled. Refer to Maintenance, Rezeroing the Gun. CAUTION: Do not use the stroke adjustment to turn off the flow of adhesive from the gun. Stroke adjustement dial 2006 Nordson Corporation
e.dot Gun 25 Troubleshooting WARNING: Risk of Burns! Do not remove the nozzle when the system is pressurized. Removing the nozzle when the system is pressurized will cause hot melt to free-flow from the gun. Relieve system pressure before removing the nozzle. Failure to relieve system pressure can result in personal injury. WARNING: Risk of personal injury. This equipment contains pressurized hot melt material and high voltage circuits. Read the Safety information provided in this document before completing any troubleshooting procedure. Failure to observe safety messages and hazard-avoidance procedures can result in personal injury, including death. Troubleshooting Table The following table lists the gun problems that are most likely to occur, the possible causes of each problem, and steps for corrective action. Where applicable, cross-references are made to expanded diagnostic procedures (DPs) provided later in this section or to other sections of this manual. Problem Possible Cause Corrective Action No adhesive flow Adhesive level low Check level. Add adhesive if needed No input power Melter temperature setting too low Hose temperature controller setting too low Gun temperature controller setting too low System not at operating temperature Air pressure to pump off or low (piston pump) Connect power to melter and associated equipment. Make sure that all circuit breakers are switched on Adjust setting (refer to melter manual) Adjust setting (refer to melter manual) Adjust setting (refer to melter manual) Verify if the READY light is on and adhesive or sealant is molten. If not, allow unit to reach operating temperature Restore or adjust piston pump air pressure Continued... 2006 Nordson Corporation
26 e.dot Gun Troubleshooting Table (contd) Problem Possible Cause Corrective Action No adhesive flow (continued) Gun fails to heat or underheats Gun overheats Melter motor not operating (gear pump) Hose clogged Nozzle clogged Gun coil faulty No power or low line voltage Temperature setting too low Failed heater cartridge (open or shorted) Failed RTD (open or shorted) Melter tank temperature setting too low Hose temperature controller setting too high Gun temperature controller setting too high Shorted RTD (melter should fault) Verify motor operation (refer to melter manual) Clean or replace hose (refer to hose user s guide) Clean or replace nozzle Check that the resistance of the coil at room temperature is 5.3 6.0 ohms. Replace the gun module if necessary Make sure that input power is connected and all circuit breakers switched ON. Check voltage at unit input and gun output Adjust setting Test heater resistance. Replace if defective Check continuity. If continuity exists, check resistance Replace RTD if defective Adjust setting (refer to melter manual) Adjust setting (refer to melter manual) Adjust setting (refer to melter manual) Test the RTD. Replace if defective Continued... 2006 Nordson Corporation
e.dot Gun 27 Problem Possible Cause Corrective Action Gun fails to close Debris or contamination in seat Remove and clean the nozzle and armature. Refer to Maintenance, Cleaning/Replacing the Nozzle and the Armature Gun closes prematurely Drip forms on nozzle Damaged return spring Low input voltage to gun driver Incorrect gun driver setting Tip of nozzle damaged Nozzle too close to substrate Replace the return spring Verify the cause of low input voltage and correct it Check settings (refer to gun driver manual) Replace the nozzle Increase gap to 4 6 mm Inconsistent bead pattern Dirt or debris in nozzle, filter, or on needle Clean or replace parts as needed 2006 Nordson Corporation
28 e.dot Gun Maintenance To maintain optimal gun performance, complete the maintenance tasks listed in Table 7. Table 7 Gun Maintenance Schedule Task When... Clean or replace the nozzle, armature, and spring Rezero the Gun Change the filter Adhesive flow is reduced or stops Poor bead quality/size After nozzle is replaced Reduced adhesive flow Cleaning/Replacing the Nozzle and the Armature WARNING: Risk of Burns! Do not remove the nozzle when the system is pressurized. Removing the nozzle when the system is pressurized will cause hot melt to free-flow from the gun. Relieve system pressure before removing the nozzle. Failure to relieve system pressure can result in personal injury. Remove the nozzle, spring and armature 1. Heat the gun to operating temperature. 2. Disable the gun. Refer to Safety. See Figure 9. 3. Remove the nozzle, spring (2) and armature (3). 2006 Nordson Corporation
e.dot Gun 29 3 2 1 Figure 9 Removing the nozzle (1), armature (2), and spring (3) Clean the components WARNING: Risk of fire. Do not heat Nordson Type R fluid above 245 C (475 F). Use only an industrial grade, regulated, electrical heating device that is designed to heat industrial fluids. Personal injury or property damage can result if Type R cleaning fluid is heated with an open flame or in an unregulated heating device. 1. Soak the components in Nordson Type R cleaning fluid that has been heated above the melting point of the hot melt. 2. Remove the components from the cleaning fluid and clean thoroughly with a soft cloth to remove all foreign material. 2006 Nordson Corporation
30 e.dot Gun Cleaning/Replacing the Nozzle and the Armature (contd) CAUTION: Use the correct size precision pin probe to clean Nordson nozzles. The use of non-precision or incorrectly sized probes may damage the nozzle. The Nordson nozzle cleaning kit (P/N 901915) contains a variety of probe sizes. 3. At the outlet of the nozzle, insert a correctly sized cleaning probe. 4. With a clean cloth, firmly grip the cleaning probe, then pull the probe out of the nozzle, wiping the probe clean. 5. Clean the armature and spring. 6. Inspect all of the components for damage or excessive wear. Replace if necessary. Refer to Parts, Gun Service Kits. Cleaning the nozzle NOTE: Over time, the nozzle and the armature and nozzle (seat) will wear down and develop a matched fit. If either the nozzle or the armature needs to be replaced, Nordson Corporation recommends that all three components (nozzle, armature, and spring) be replaced. Re-install the components 1. Turn the stroke adjustment dial to 0.3 mm. 2. Re-install the spring and armature into the module. CAUTION: Do not overtighten the nozzle. To avoid applying excessive torque to the nozzle, use the shortest wrench available. Stroke adjustement dial 3. Check the nozzle O-ring for damage or deterioration. Replace if necessary. 4. Re-install the nozzle and tighten it to 3 4 Nm (2 3 ft.-lb). 5. Go to Rezeroing the Gun. 2006 Nordson Corporation
e.dot Gun 31 Rezeroing the Gun 1. Heat the gun to operating temperature. See Figure 10. 2. Use a 1. 5 mm hex key to loosen the dial set screw (3) CAUTION: Do not overtighten the stroke adjustment screw. Overtightening the screw can damage the seat. 3. Using the long end of a 3 mm hex key, held by two fingers, turn the stroke adjustment screw (2) clockwise until it just stops. 4. Turn the dial (1) until the 0 indication is aligned with the reference mark (4) on the side of the module. 5. Tighten the dial set screw. 6. Turn the dial to 0.2 mm. Figure 10 Module adjustment features 2006 Nordson Corporation
32 e.dot Gun Changing the Filter 1. Heat the gun up to its operating temperature. 2. Relieve system pressure. Refer to Safety. 3. Use a 5 mm hex key to remove the filter. NOTE: Dispose of the old filter. Filters are not serviceable. See Figure 11. 4. Apply Never-Seez to the threads of the new filter. 5. Install the new filter and tighten it to 1.35 2.71 N m (1 2 ft-lb). Red/50 mesh (0.011 in.) P/N 1045502 Yellow/100 mesh (0.006 in.) P/N 1045506 Purple/200 mesh (0.003 in.) P/N 1045520 NOTE: To prevent nozzle clogging, ensure that the filter mesh size is smaller than the nozzle orifice size. Figure 11 Installing the filter (Left top feed/right rear feed) 2006 Nordson Corporation
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34 e.dot Gun Removing the Cordset See Figure 12. 1. Relieve hydraulic pressure and de-energize the system. Refer to Safety. 2. Remove the two socket head screws (1) that secure the cordset to the manifold. 3. Take hold of the slide cover (8), and pull it away from the manifold. 4. Remove the round connector (2), the heater (3) and RTD (4). Installing the Cordset See Figure 12. 1. Slide the heater (3) into the heater cavity (7). 2. Position the RTD (4) to the left side of the round connector (2), and then slide the RTD into the RTD cavity (6). 3. Push the round connector (2) into the connector cavity of the manifold (5) by pushing the slide cover (8) into place. 4. Fasten the two socket head screws (1). 2006 Nordson Corporation
e.dot Gun 35 1 8 7 3 2 4 6 5 Figure 12 Cordset Replacement 2006 Nordson Corporation
36 e.dot Gun Parts e.dot Gun Components Figure 13 e.dot gun components 2006 Nordson Corporation
e.dot Gun 37 Item Part Description Quantity Note - - - - - - 1061607 Gun, top feed, round connector, 0.25 mm nozzle - - - - - - 1061608 Gun, top feed, round connector, 0.3 mm nozzle - - - - - - 1061609 Gun, top feed, round connector, 0.35 mm nozzle - - - - - - 1061622 Gun, rear feed, round connector, 0.25 mm nozzle - - - - - - 1061623 Gun, rear feed, round connector, 0.3 mm nozzle - - - - - - 1061625 Gun, rear feed, round connector, 0.35 mm nozzle 1 377954 Module with 0.25 mm nozzle 1 A 1 377955 Module with 0.3 mm nozzle 1 A 1 377956 Module with 0.35 mm nozzle 1 A 2 Spring 1 B 3 Armature 1 B 4 O-ring 1 B, E 5 Nozzle 1 B, C 6 Seal 1 B 7 Seal 1 B 8 1062529 Cordset, round connector, w/heater and RTD 1 9 Filter, gun, integrated 1 D 10 972657 Connector, with O-ring, 9 / 16-18 1 11 972630 Elbow, 45 degree, 9 / 16-18 1 12 Bracket assembly, mounting, clamp, H100 1 13 O-ring, Viton, 5.28 x 1.78 mm 1 B, F 14 Screw, socket, M4 x 25 2 B 15 Screw, socket, M3 x 45 1 B NOTE A: Includes mounting screws (items 14 and 15). B: Included in module service kit P/N 377951. C: Nozzles (with O-ring) also sold separately. Refer to Nozzles. D: Three mesh sizes available. Refer to Filters. E: Pack of 10 P/N 7300511. F: Pack of 10 P/N 7300512. 2006 Nordson Corporation
38 e.dot Gun Gun Service Kits Part Description 377951 Kit, service, module, e.dot 377959 Kit, armature, spring, 0.25 mm nozzle 377960 Kit, armature, spring, 0.3 mm nozzle 377961 Kit, armature, spring, 0.35 mm nozzle 1062529 Kit, cordset, round connector, w/heater and RTD 7300511 Kit, service, O-ring, 10 pc., seal, nozzle, e.dot Nozzles Part Description 377946 Nozzle, 0.25 mm, with O-ring 377945 Nozzle, 0.3 mm, with O-ring 377947 Nozzle, 0.35 mm, with O-ring 7300512 Kit, service, O-ring, 10 pc., seal, module-to-gun, e.dot Filters Part 1045502 Kit, filter, gun, 50 mesh 1045506 Kit, filter, gun, 100 mesh 1045520 Kit, filter, gun, 200 mesh Description e.dot Small Diameter Hoses Part 1040295 Hose, 2 m (6.56 ft.) 1040296 Hose, 3.5 m (11.5 ft.) 1040297 Hose, 5 m (16.4 ft.) Description 2006 Nordson Corporation
e.dot Gun 39 e drivers Part Description 1042905 Gun driver, e, 4-module, with power supply 1042906 Gun driver, e, 4-module, without power supply 1043783 Gun driver, e, 3-module, with power supply 1043784 Gun driver, e, 3-module, without power supply 1042902 Gun driver, e, 2-module, with power supply 1042904 Gun driver, e, 2-module, without power supply 1043759 Gun driver, e, single box e driver cables Part Description 1041830 Cable, e.dot, 15 m (49.2 ft.), e.dot hose to e driver 1041835 Cable, e.dot, 10 m (33 ft.), e.dot hose to LA4400/e driver2, 3, 4 1041831 Cable, extension, e.dot hose to P/N 1041830 or P/N 1041835, 10 m (33 ft.) 1044019 Cable, e driver2, 3, 4 to EPC-30 2006 Nordson Corporation
40 e.dot Gun Technical Data The following technical data is provided for your reference as needed. Gun Specifications Item Service life Response time Maximum hydraulic pressure Working hydraulic pressure Working viscosity Maximum viscosity Maximum operating temperature 200 million cycles 2 ms 100 Bar (1450 psi) 48.3 Bar (700 psi) 1000 cps 5000 cps 185 C (365 F) Description Gun Dimensions Figure 14 Top-feed e.dot gun dimensions 2006 Nordson Corporation
e.dot Gun 41 Figure 15 Rear-feed e.dot gun dimensions Gun Wiring Diagram Figure 16 e.dot gun wiring 2006 Nordson Corporation
42 e.dot Gun Cable Wiring Diagrams Figure 17 e.dot cable diagrams 2006 Nordson Corporation