E-750 Electric Applicator Technical Manual

Transcription

1 E-750 Electric Applicator Technical Manual Part B NORDSON CORPORATION a AMHERST, OHIO USA

2 Nordson Corporation welcomes requests for information, comments and inquiries about its products. Address all correspondence to Nordson Corporation Lakefield Drive Duluth, GA Notice This is a Nordson Corporation publication which is protected by copyright. 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 Blue Box, Equi=Bead, FloMelt, FoamMelt, FoamMix, Helix, Hot Shot, Hot Stitch, Meltex, MicroSet, MultiScan, Nordson, the Nordson logo, OmniScan, Posi-Stop, RBX, UniScan, UpTime, and Versa-Spray are registered trademarks of Nordson Corporation. AquaGuard, BetterBook SM, CF, Control Coat, Controlled Fiberization, Easy-Screen, Fibermelt, Flo-Tracker, Porous Coat, PrintGuard, Sure-Bond, and Package of Values are trademarks of Nordson Corporation.

3 Table of Contents O-1 Table of Contents Section 1 Safety Instructions Operate safely!... l-l Safety symbols... l-l Intended use... l-2 Installation and Electrical Connections... l-2 Operation... l-3 Action in the event of unit malfunction... l-3 Danger of burns... l-3 Maintenance/Repair... l-4 Cleaning... l-4 Thermoplastic hot melt material... l-5 Section 2 Equipment Familiarization Introduction... 2-l Functional Description Section 3 Installation Introduction... 3-l Unpacking... 3-l Inspection... 3-l Installation... 3-l Installing the Applicator... 3-l Installing the Hose Installing the Driver Connecting the Applicator(s) to the Driver Connecting the Pattern Controller to the Driver Connecting Power to the Driver Section 4 Operation Startup Procedure... 4-l Shutdown Procedure... 4-l Publication No ONORDSON CORPORATION 1994 All Rights Reserved Issued 1 O/94

4 o-2 Table of Contents Section 5 Maintenance Introduction... 5-I Safety Precautions Daily Maintenance Weekly Maintenance Nozzle Cleaning Semi-annual Gun Inspection Section 6 Troubleshooting Introduction Troubleshooting Adhesive Application Problems Driver Troubleshooting Guide Section 7 Disassembly and Repair Replacing the Heater Cartridge Replacing the Armature/Sleeve Replacing the Driver Module Section 8 Illustrated Parts List Column Identification E-750 Electric Applicator Parts List Electric Driver Parts List Recommended Spare Parts List Section 9 Technical Data Specification Summary E-750 Electric Applicator Electric Driver Nordson Type R Cleaning Solvent Solvent/Adhesive Compatibility Usage Storage Approvals Issued 1 O/94 ONORDSON CORPORATION 1994 All Rights Reserved Publication No

5 Tab/e of Contents O-3 Optional Section 10 Parts And Equipment Introduction... IO-I Hot Melt Nozzle Cleaning Kit... IO-I Nozzle Cleaning... 1 o-1 Nozzle Cleaning Kit Parts List... IO-2 Probe Selection Chart... IO-2 Publication No ONORDSON CORPORATION 1994 All Rights Reserved Issued 1 O/94

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7 Safety Instructions I-1 Section 1 Safety Instructions Operate safely! Safety recommendations contained in this section and throughout the manual apply to tasks that may be performed on or with the unit or with materials used with the unit. IT IS VERY IMPORTANT THAT THESE SAFETY RECOMMENDATIONS ARE ALWAYS FOLLOWED. FAILURE TO DO SO COULD RESULT IN PERSONAL INJURY AND/OR DAMAGE TO THE UNIT OR OTHER EQUIPMENT. With this in mind, here are some basic safety recommendations: Read and become familiar with this Safety Instructions Section prior to installing, operating, maintaining or repairing the unit. Store this manual within easy reach of personnel operating or maintaining the unit. Be familiar with and always observe safety symbols. Wear adequate personal protective equipment and clothing such as safety goggles and gloves. Familiarize yourself with and follow all safety instructions prescribed by your company, general accident prevention regulations and government safety regulations. Safety symbols The following symbols are used throughout the manual to warn against dangers or possible sources of danger. Become familiar with them! Failure to heed a warning symbol could lead to personal injury and/or damage to the unit or other equipment. WARNING: Failure to observe may result in personal injury, death or equipment damage. WARNING: Risk of electrical shock. Failure to observe may result in personal injury or death. WARNING: Disconnect equipment from line voltage. WARNING: Hot. Risk of burns. Wear protective clothing/safety goggles (ANSI l 989 or equal)/protective gloves (P/N ) depending on the symbol shown. Publication No ONordson Co ration 1994 All Rights T? eserved Issued 1 O/94

8 1-2 Safety Instructions Safety symbols (continued) WARNING: Risk of explosion or fire. Fire, open lights and smoking prohibited. WARNING: System or material pressurized. Release pressure. Interrupt compressed air, set motor switch to 0 and release hot melt material pressure by actuating the extrusion guns. Failure to observe may result in serious burns. intended use The unit is designed and intended to be used only for the purpose described in Section Equipment Familiarization. Uses not in accordance with the Section are considered unintended uses and not in accordance with governing regulations. The following actions of the owner or operator of the unit are some but not all examples of unintended use which would permit Nordson to claim it is not responsible for personal injury or property damage arising from such unintended use: unapproved modifications or changes to the unit failure to comply with the Safety Instructions failure to comply with instructions concerning installation, use, operation, maintenance, or repair, or when these tasks are carried out by unqualified personnel use of inappropriate or incompatible foreign materials or auxiliary equipment failure to observe workplace safety rules or regulations issued by government authorities or safety councils NOTE: Operators or maintenance workers are regarded as being qualified personnel when they have gained, through training and experience, an understanding of the manner in which the unit is to be operated, serviced and repaired, and based on safe workplace practices are familiar with relevant regulations. installation and Electrical Connections All electrical, pneumatic, gas, and hydraulic connections and installations of heated hoses and hot melt applicators may only be carried out by qualified personnel. Be sure to observe installation instructions for components and accessories. Equipment must be properly grounded and fused according to its rated current consumption (see ID plate). Cables which run outside the unit must regularly be checked for wear and tear or damage. The conductors of cables connecting the unit to the main electrical supply must have adequate diameters according to the rated current consumption. Issued 1 O/94 ONordson Co oration 1994 All Rights 75 eserved Publication No

9 Safety Instructions I-3 Installation and electrical connections (continued) Cables must never be squeezed or pinched. They should be located or positioned to eliminate the opportunity for an operator to stumble or trip. n t 0 WARNING: If the installation is not carried out according to instructions, especially in case of electrical connections, this will result in imminent danger of serious personal injury. including death. Operation Action in the event of unit malfunction The unit should be operated according to relevant instructions and by qualified personnel. NEVER have the unit operated by personnel under the influence of substances reducing their reaction times, or who are not able to operate the equipment for physical reasons. At regular intervals, check protective and warning devices to determine that they are in a functioning condition. DO NOT OPERATE THE UNIT IF THESE DEVICES ARE NOT FUNCTIONING PROPERLY. When the removal of safety equipment is required for installation, maintenance, or repair of the unit, it must be re-connected immediately upon completion of the work and prior to unit start-up. In a humid environment, only equipment featuring a corresponding class of protection may be operated. Do not operate the unit in an explosive environment. Keep endangered parts of the body or clothing away from rotating parts. Take off wrist watches, rings, necklaces, or similar pieces of jewelry and pin up or cover long hair before performing any work on or with the unit. To carry out measurements on work pieces, switch off the unit and wait until it comes to a standstill. Never point hand guns or applicator nozzles at yourself or other persons. In the event the unit experiences a malfunction, switch off the unit immediately. Switch off the main switch or, if available, the emergency turnoff switch or use other safety equipment to stop the unit. After turning the unit off and prior to switching it on again, the malfunction has to be eliminated by qualified personnel. Danger of bums Contact with hot areas of the hot melt applicator as well as to the hot melt material may produce a severe skin burn. Take utmost care when using hot melt material. Even solidified material may still be very hot. Publication No ONordson Co oration 1994 All Rights % eserved Issued 1 O/94

10 i-4 Safety Instructions Danger of bums (continued) Always wear protective clothing which safely covers all endangered body parts. In case of burns: Immediately cool affected skin areas using cold, clean water. Do not forcefully remove hot melt material from the skin. Immediately seek medical attention. Maintenance/Repair Allow only qualified personnel to perform maintenance, repair and troubleshooting. All activities should only be carried out wearing personal protective clothing and equipment and when the equipment is switched off and unpressurized. n WARNING: Even when the main switch is set to OFF there f remains residual voltage inside the switchboard. So, on principle, carry out the following work prior to maintenance and repair: Disconnect, lock out and tag external power supply. To ensure the external power supply is disconnected, attempt to operate the unit. If the unit does not energize, proceed with maintenance or repair work. If the unit energizes, repeat the disconnect, lock out and tag procedure. Retest the unit. Manually actuate the applicators/hand guns to release the system pressure in the entire unit. Secure pneumatically or hydraulically operated equipment against uncontrolled movement. Only use spare parts which do not compromise the safety of the unit. A list of Nordson spare parts is provided in Section 8 of this manual. use a rubber handle screwdriver when removing or installing components. ALWAYS Cleaning NOTE: Always refer to the Material Safety Data Sheet or material information sheet before working with the material. a WARNING: t Never clean any aluminum part or flush any system using halogenated hydrocarbon solvents. Examples of common halogenated hydrocarbons are dichloromethyline, 1,I,l -trichloroethylene, perchloroethyline. Halogenated hydrocarbons may react violently with aluminum parts. NEVER use an open flame to clean the unit or components of the unit. Use only cleaning solvents designed or intended to be used with the hot melt material being used in the unit. NEVER USE PAINT SOLVENTS UNDER ANY CIRCUMSTANCES. Issued 1 O/94 ONordson Co ration 1994 All Rights F? eserved Publication No

11 Safety Instructions I-5 Cleaning (continued) Note the flash point of the cleaning solvent used. Only use a controlled heating method to heat solvents. Ensure sufficient room ventilation to draw off generated vapors. Avoid prolonged breathing of vapors. WARNING: Fire, open lights and smoking are prohibited when cleaning solvents are used. Observe all explosion heated using temperature-controlled and explosion-protected heaters. Thermoplastic material hot melt NOTE: Always refer to the Material Safety Data Sheet or material information sheet before working with the material. Ensure the work area is adequately ventilated. Do not exceed recommended processing temperatures. Doing so creates a danger to personnel due to decomposition of the material. Publication No ONordson Co ration 1994 All Rights T? eserved Issued 1 O/94

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13 Equipment Familiarization 2-1 Section 2 Equipment Familiarization introduction The Nordson@ E-750 Electric Applicator is an electrically activated dispenser for thermoplastic adhesives. The E-750 is sold with an electric driver which translates the timer signal into a wave form which optimizes applicator performance. The applicator is carefully designed to accurately control temperature at the nozzle. E-750 Electric Applicator The applicator is machined from a solid aluminum block drilled to house a 24 VDC coil, an armature/sleeve assembly, a 200 watt cartridge heater and an RTD temperature sensor. The SAE inlet port accepts standard straight, 45 and 90 hose fittings. Use of an inline filter with the E-750 is recommended. The cordset has the standard Nordson 2300 Series connector. The link-up of the driver uses a two pin, quick-disconnect connector. A ten-foot applicator-to-driver interconnect cable is provided with each unit. Features: Single piece flow-through module No dynamic seals RTD temperature control Rugged single block body construction Replaceable heater cartridge Long-life 24 VDC coil Standard SAE hose connector (45, 90 options available) Quick connect on gun control and timer leads Standard H-20 nozzle configurations Electric Driver The Nordson Driver is a solid-state electronic device which enhances the performance of the E-750 to produce extremely fast valve action. The response time increases the opening and closing speed of the adhesive valve. This translates into sharper cut-off and increased accuracy of pattern placement The driver can open a single electric valve in 2 to 3 milliseconds, hold it open for as few as 1 to 2 milliseconds and allow it to close in 2 to 3 milliseconds. It can fire one head or valve module continuously every 10 milliseconds. Publication No ONordson Co ration 1994 All Rights rgo eserved Issued 1 O/94

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15 Equipment Familiarization 2-3 This control gives the E-750 the consistency, accuracy, and long life you would expect in a Nordson system. Features: Improves speed of automatic applicator valves Valves open in 2-3 ms, close in 2-3 ms Continuous operation of a single valve at 10 ms cycles (a cycle is the time in which the driver fires on and off) High precision pattern control with accurate and repeatable placement Pattern registration accuracy of ms (k 0.05 inch at 500 fpm) Supports two independent head groups, each controlled by an optically isolated input Built-in RUN/OFF/TEST Built-in power supply switch for each head group One unit serves 100 VAC to 240 VAC systems Functional Description During operation, molten hot melt material is supplied to the E-750 applicator by the pump in the melter unit. The material enters the inlet port located on the top of the applicator and is directed through the armature/sleeve assembly to the ball and seat. When the coil is energized, the armature lifts off of the seat. The hydraulically pressurized material is extruded from the nozzle while the ball is held off its seat by magnetic attraction. When the timer de-energizes the driver, the coil loses its magnetic attraction and the armature return spring forces the ball against its seat, stopping the flow of material. Publication No ONordson Co ration 1994 All Rights T? esewed Issued 1 O/94

16 2-4 Equipment Familiarization Table 2.1 Function of Driver Controls and Indicators - _- I 0 POWER r-head QROUP l- RUN-TEST IN OUT r- HEAD QROUP 2 RUN-TEST IN OUT 1 I OFF I Figure 2.2. Driver Panel Issued 1 O/94 ONordson Co ration 1994 All Rights T? eserved Publication No

17 Ins talla tion 3-I Section 3 Installation ln troduc tion This section gives detailed information necessary for the proper installation of the E-750 applicator, the driver, and the adhesive supply hose. Unpacking No special instructions are necessary to unpack the guns and hoses. Normal care should be exercised not to damage the equipment during unpacking. Inspection After unpacking the applicator and hoses, perform the following inspections: 1. Inspect applicator and hose surfaces for evidence of dents, scratches, corrosion, and other physical damage. 2. Inspect service block for loose electrical connections and contaminants. 3. Inspect hose for frayed connections, rips in the outer braid, and evidence of kinks. 4. Inspect all fasteners for tightness. Ins talla tion Installing the Applicator The E-750 applicator may be mounted to extrude material in any direction necessary for the application. It may be mounted directly on the parent machine using the two M6 tapped holes located on the top of the body. It may also be used with the mounting block secured to the body. An insulator, located between the mounting block and body, and Teflon@ sleeves, located inside the mounting block holes, thermally insulate the applicator from the mounting bars. 1. Position the applicator as close to the substrate as the application will allow. Accuracy in placement and reduced tailing will result. 2. Secure the body to the parent machine using the two holes located on top of the body. If using the mounting block, mount the applicator on a 0.5 in. (13mm) diameter bar and tighten the mounting screws. The mounting bar should be secured so that there will be no movement.the applicator should be protected from vibration and secured so that it will not change position during application. Publication No ONordson Co ration 1994 All Rights 77 esewed Issued 1 O/94

18 3-2 Ins talla tion NOTE: When mounting the applicator directly to the parent machine, the insulator must be placed between the applicator body and the parent machine. Installing the Hose The hose may be connected to the applicator either horizontally or vertically. 1. If connecting the hose vertically, simply connect the hose to the male hose connection on the top of the applicator. When connecting the hose horizontally, the straight connection fitting must be replaced with a 45 or 90 elbow by the following procedure: a. Remove the straight fitting from the top of the applicator. NOTE: Do not use extra fittings or nipples to connect the applicator to the hose. A cold connection may result. b. Lubricate the elbow fitting threads and o-ring with a small amount of Teflon@ paste (P/N ) making sure first that the o-ring and threads are free of dirt and other foreign particles. c. Thread the fitting by hand into the threaded port in the applicator. 2. Tighten the fitting only enough to seat. It should seat when the body of the metal fitting contacts the applicator body surface. Between 7 and 10 ft-lbs of torque is required to create an effective seal. NOTE: Nordson Corporation recommends insulation on the fittings that connect the hose to the applicator. The installation kit, P/N , has a cuff (P/N ) included in the kit. NOTE: Hot melt hoses should not be placed inside of any closed cover where heat cannot be dissipated from them. Doing so may cause the hose to fail. NOTE: Hot melt hoses should not be secured or supported so that the hose has a large area of surface in contact with a cold floor, cold steel, angle iron, or other cold material. Doing so may result in poor hose performance. 3. Connect the hose electrically to the applicator by connecting the plug on the applicator to the receptacle on the hose. See Figure Connect the hose mechanically to the melter unit according to the instructions provided with the melter unit. n i WARNING: This equipment contains energized electrical components that could be fatal. DO NOT connect the hose electrically to the applicator at this time. Connect input power at the appropriate point in the Initial Start Up procedure in the applicator service manual.

19 Ins talla tion 3-3 Installing the Driver Mount the driver in a location where it will not be subject to excessive vibration or moisture. It should be close to the pattern controller and applicators. A mounting kit is shipped with each driver. This kit includes all screws (l/4-20), nuts, and washers necessary to mount the driver. Mounting hole locations are shown in figure 3.1. Conduit holes have been provided to simplify hook-up of power, timer input signal and output to the applicator solenoid wires. The driver enclosure must be connected to an earth ground for safe operation. Also, the driver must be connected to a switched circuit which is fuse-protected. When not in use this device should be turned off. A hardwire diagram is provided with the driver to ensure proper electrical hook-up I / (254) 1 NOTE: DIMENSIONS IN 1NCHES (MILLIMETERS IN PARENTHESES) Figure 3.1. Dn ver Mounting lnforma tion Publication No ONordson Co ration 1994 All Rights T? eserved Issued 1 O/94

20 Ins talla tion FOOT EXTENSION CABLE P/N (OPTIONAL) CABLE P/N (SHIPPED WITH APPLICATOR) Figure 3.2. Connecting the Applicator to the Driver issued 1 O/94 ONordson Co ration 1994 All Rights Y? eserved Publication No

21 Ins talla tion 3-5 Connecting the Applicator(s) to the Driver 1. Connect the driver cable of the applicator to the applicator-to-driver cable that is shipped with the E-750 applicator. See Figure 3.2. NOTE: If you need more cable to reach the driver, use the 1 O-foot extension cable shown in Figure Remove one of the two knockouts in the bottom on the driver enclosure and route the wires of the applicator-to-driver cable through the cable-connector hole. 3. Open the door of the driver enclosure and remove the four cap screws on the driver panel. 4. Use the two lifting knobs to carefully remove the driver module. (See Figure 7.1.) 5. Connect the two lead wires of the applicator-to-driver cable to terminals 13 and 16 of the driver as shown in Figure Connect the ground wire of the cable to the ground connection shown in Figure If you are connecting a second applicator to the driver, repeat steps 1-2 and then connect the leads to terminals 17 and 20 as shown in Figure 3.4. Connect the ground wire to the driver enclosure s ground connection. TO APPLICATOR NO.7 OUTPUT Figure 3.3. Connecting a Single Applicator to the Driver Publication No ONordson Co ration 1994 All Rights go esewed Issued 1 O/94

22 3-6 Ins talla tion TO GROUND TO GROUND APPL!CATOR APPLICATOR NO.1 OUTPUT NO.2 OUTPUT Figure 3.4. Connecting Two Applicators to the Driver Issued 1 O/94 ONordson Co oration 1994 All Rights g eserved Publication No

23 Ins talla tion 3-7 Connecting the Pattern Controller to the Driver 1. Route a grounded cable from the pattern controller to the driver. Push it through the cord-connector hole in the bottom of the driver s electrical enclosure. 2. Connect the leads to terminals 9 and 12 as shown in Figure Connect the ground wire to the ground connector inside the driver enclosure. 4. If you are using a second E-750 applicator, you have two options: a. To produce the same pattern as applicator No. 1, connect two jumpers between terminals 7 and 11 and between terminals 6 and IO. Connect the ground wire to the ground connector inside the driver enclosure. See Figure 3.6. b. To produce a different pattern from applicator No. 1, route a second cable from the pattern controller (for applicator No. 2) and connect it to terminals 5 and 8. Connect the ground wire to the ground connector inside the driver enclosure. See Figure 3.7. TRlGdER NO.1 INPUT (12-28 VDC) Figure 3.5 Connecting the Pattern Controller to the Driver for a Single Applicator Publication No ONordson Co ration 1994 All Rights go eserved Issued 1 O/94

24 3-8 Ins talla tion TRI&ER TRlGbER NO.2 INPUT NO.1 INPUT (JUMPERED) (12-28 voc) Figure 3.6. Connecting the Pattern Controller to the Diver for Two Applicators (Same Pattern) TRtdGER TRlGbER NO.2 INPUT NO.1 INPUT (12-28 VDC) (12-28 VDC) Figure 3.7. Connecting the Pattern Controller to the Driver for Two Applicators (Different Patterns) Issued 1 O/94 ONordson Co oration 1994 All Rights g eserved Publication No

25 Ins talla tion 3-9 Connecting Power to the Driver 1. Route a 220 VAC power line to the driver. 2. Push the power line through the cord connector hole in the bottom on the driver electrical enclosure. 3. Connect the power leads to terminals 1 and 4 as shown in Figure Connect the ground wire to the ground connector as shown in Figure Connect the driver enclosure to a reliable earth ground. 6. Close the electrical enclosure door. NOTE: LINE INPUT = VDC Figure 3.8. Connecting Power to the Driver Publication No ONordson Co ration 1994 All Rights rgo eserved Issued 1 O/94

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27 Operation 4-1 Section 4 Operation Startup Procedure NOTE: Do not operate the applicator when it is cold. If you trigger an applicator with cold material in it, you may damage the armature and coil. NOTE: Do not operate the applicator above 375 F (19O C). Operating at higher temperatures may damage the applicator. NOTE: Do not trigger or cycle the applicator unless it has hot melt material in it. Cycling an empty applicator can damage the equipment. NOTE: If you remove the nozzle (to purge the system, for example), the applicator may close prematurely if you are using a high-viscosity material and operating at a high pressure. If this happens, lower the pressure when you perform procedures that require removal of the nozzle. 1. Heat the applicator up to the recommended temperature. 2. Place the ON/OFF switch on the driver in the ON position. 3. Start the production line. Shutdown Procedure 1. Stop the production line. 2. Place the ON/OFF switch on the driver in the OFF position. 3. Remove power from the applicator at the melter and allow the applicator to cool down to room temperature. Publication No ONordson Co ration 1994 All Rights Lb? eserved Issued 1 O/94

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29 Maintenance 5-l Section 5 Maintenance Introduction Section 5 outlines the preventive maintenance procedures that Nordson recommends for the E-750 Electric Applicator. The preventive guidelines are designed to achieve the best performance and the longest life of the equipment. Safety Precautions A WARNING: This equipment contains energized electrical components with potentials that could be fatal.disconnect and lock out input electrical power before performing maintenance on this equipment. Only qualified personnel should operate this equipment. n t 0 WARNING: Wear safety glasses, safety gloves (P/N ), and protective clothing to prevent injury from hot applicator parts, splashed hot melt adhesive material, and hot gun surfaces. A t WARNING: Relieve system pressure before breaking any mechanical connections (for example, the applicator-to-hose connection) in the following manner: a. Reduce the pump air pressure to zero at the regulator. b. Trigger all guns to relieve trapped hydraulic pressure. c. Open the manifold drain valve in the melter unit. CAUTION: Heating components with a torch or other open flame could result in a fire hazard. If it becomes necessary to heat components for maintenance or repair, use an electric oven with forced air circulation or a flameless electric heat gun. Daily Maintenance Clean all exterior surfaces of the applicator. Accumulated hot melt adhesive material can char and cause erratic operation. Publication No ONordson Co ration 1994 All RightsrfPeserved Issued 1 O/94

30 5-2 Maintenance Week/y Maintenance Nozzle Cleaning Clean all nozzles weekly unless operational history indicates that more or less frequent cleaning is required. Nozzle clogging occurs when a filter screen is damaged or when there is charred material in the hose or applicator. Charring can occur when an adhesive is heated above the application temperature recommended by the adhesive manufacturer. If charring does occur, it may be necessary to replace the hose or the gun, or both. A I WARNING: Wear safety glasses, safety gloves (P/N ), and protective clothing to prevent injury from hot applicator parts, splashed hot melt adhesive material, and hot gun surfaces. CAUTION: DO NOT heat Type R solvent above 475 F (246 C). See Technical Data, Section 9, for further details. DO NOT heat Type R solven with an open flame or in an unregulated heating device (for example, a small pan on an unregulated hot plate). Afire hazard exists if an open flame or unregulated hot plate is used to heat Type R solvent. A controlled heating device (such as a small deep fat fryer or thermostatically controlled hot plate) must be used to heat the solvent above the melting temperature of the hot melt material. 1. Heat the applicator to operating temperature. 2. Relieve system hydraulic pressure in accordance with the applicator service manual. WARNING: Relieve system pressure before breaking any mechanical connections (for example, the applicator-to-hose connection or the filter-to-manifold connection) in the following manner: a. Reduce the pump air pressure to zero at the regulator. b. Trigger all guns to relieve trapped hydraulic pressure. c. Open the manifold drain valve. 3. Open manifold drain. 4. Remove the nozzle. 5. Place the nozzle in a container of Type R solvent and heat the solvent to the melting temperature of the adhesive material. WARNING: Solvents may present a toxic or fire hazard, even at room temperature. Use extreme care in selecting a cleaning solvent other than Type R solvent. Issued 1 O/94 ONordson Cor ration 1994 All Rights I? esewed Publication No

31 Maintenance 5-3 NOTE: Some solvents may not be compatible with the hot melt adhesive material. Sludge formation can further compound the problem. Test the solvents with a small sample of adhesive before using the solvent in the system. 6. Clean the nozzle bore with a pin-type probe inserted into the nozzle in the opposite direction as the flow of adhesive. See Section 10 for specific information on nozzle cleaning kits. NOTE: Do not use an open torch, drill, or broach to clean a nozzle. Damage may result. Alternate nozzle heating and cleaning methods include: a. Heat nozzle with a flameless electric heat gun. Wipe nozzle with a clean cloth. b. Submerge nozzle in an ultrasonic cleaner. c. Submerge nozzle in a chemical cleaner. 7. Reassemble the nozzle on the applicator. 8. Restore the system to normal operation in accordance to the melter unit manual. Semi-annual Gun Inspection a i WARNING: This equipment contains energized electrical components with potentials that could be fatal. Disconnect and lock out input electrical power before installing or servicing this equipment. 1. Remove the cover plate. 2. Inspect all wiring for signs of wear or other damage to the insulation. 3. Check all electrical connections for tightness. 1 AA WARNING: Vibration and heating/cooling cycles may loosen connections. This can result in electric shock or equipment damage. 4. Clean the armature and spring assembly. Replace as required. See Section 7 for disassembly instructions. Publication No ONordson Co ration 1994 All Rights RT esewed Issued 1 O/94

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33 Troubleshooting 6-I Section 6 Troubleshooting Introduction Obvious causes of malfunctions, such as broken wires and missing fasteners, are generally not considered. These types of failures should be noted and eliminated during periodic cleaning and inspection, unless the failure presents an immediate hazard to the equipment or personnel. Troubleshooting Adhesive Application Problems Since the solenoid plunger is immersed in the adhesive, the viscosity affects the lead, lag and sometimes the quality of the bead. One of the first checks should therefore be the tank, hose and applicator temperatures. Contact your local representative for current adhesive data sheets and recommended operating temperatures. Publication No BNordson Co ration 1994 All Rights 7? eserved Issued 1 O/94

34 6-2 Troubleshooting LT. BLUE J d Figure 6. I E-750 Electric Applicator Wiring Diagram Table 6.1 Resistance Checks for E-750 Applicator Pl Pl Pl 1 2 Heater 288 OHM Gnd Gun Body Ground Less Than.Ol OHM 3 5 RTD See Fiaure 6.2 Issued 1 O/94 ONordson Co oration 1994 All Rights f eserved Publication No

35 Troubleshooting 6-3 TEMPERATURE IN C z I. I I NICKEL RTD IL 280-m 268-w RESISTANCE IN OHMS 220 -I m TEMPERATURE IN *F Figure 6.2 Temperature versus Resistance Chart Publication No ONordson Co ration 1994 All Rights rgo eserved Issued 1 O/94

36 6-4 Troubleshooting Driver Troubleshooting Guide when the ON/OFF power switch is placed in the ON position. terminals Ll and l-2. If voltage is nt, ( VAC) replace the No input signal light. Incorrect voltage from pattern controller, reversed polarity. Check the polarity of the trigger signal. Voltage must be between 12 and 28 VDC. Signal light shows trigger state. The driver does not need to be powered. No output indicator light. No input signal, switches not set correctly. Front panel power switch must be in the ON position. The RUN/OFF/TEST switch must be in the RUN position. Input signal light must be ON. If there is still no output light, replace driver. No output to solenoid Defective solenoid, loose connection. If output indicator light is ON, but there is no output to the solenoid, check the wiring and solenoid.

37 Disassembly and Repair 7-1 Section 7 Disassembly and Repair Replacing the Heater Cartridge n!i WARNING: This equipment contains energized electrical components with potentials that could be fatal. Disconnect and lock out input electrical power before installing or servicing this equipment. a WARNING: t 0 Wear safety glasses, safety gloves (P/N ) and protective clothing to prevent injury from hot applicator parts, splashed hot melt adhesive material, and hot gun surfaces. 1. Disconnect and lockout input electrical power to the applicator. 2. Remove cover screws and cover. 3. Disconnect cartridge heater leads at the terminal block. 4. Remove hold-down screw. 5. Remove cartridge heater from manifold. 6. Replace cartridge heater in manifold. 7. Replace the hold down screw. 8. Attach cartridge heater leads at the terminal block. 9. Replace cover and secure with cover screws. 10. Restore system to normal operation in accordance with melter-unit manual. Replacing the Armature/Sleeve 1. Heat system to operating temperature. n t WARNING: Wear safety glasses, safety gloves (P/N ) and protective clothing to prevent injury from hot applicator parts, splashed hot melt adhesive material, and hot gun surfaces. 2. Reduce system pressure to zero in accordance with applicator service manual. n WARNING: t 0 Relieve system pressure before breaking any mechanical connections (for example, the applicator-to-hose connection or the filter-to-manifold connection) in the following manner: Publication No ONordson Co ration 1994 All Rights 77 eserved Issued 1 O/94

38 7-2 Disassembly and Repair a. Reduce the pump air pressure to zero at the regulator. b. Trigger all guns to relieve trapped hydraulic pressure. c. Open the manifold drain valve. 3. Remove the four screws from the coil cover and remove the cover. 4. Remove the four screws from the seat assembly flange. 5. Pull armature/sleeve assembly through coil. NOTE: The armature/sleeve assembly is sold as replacement P/N For routine cleaning, clamp only at the flange. Pressure on the sleeve may damage the module. 6. Slide the armature and spring out of the sleeve. 7. Replace armature and spring. 8. Remove and replace the o-ring on the seat adapter. Apply o-ring lubricant to the o-ring. 9. Screw the seat adapter back in place. 10. Slide the armature/sleeve assembly carefully back in place. Install screws into seat adapter flange. 11. Replace the o-ring on the pole piece and apply o-ring lubricant. NOTE: O-ring replacement is recommended anytime the armature/sleeve assembly is removed from the applicator. The order of assembly is important. Replace the o-ring AFTER inserting the assembly through the coil. 12. Install the coil cover and the four screws.

39 Disassembly and Repair 7-3 Replacing the Driver Module WARNING: Risk of electrical shock. Failure to observe n /i may reslut in personal injury or death. 1. Remove external power to driver module. n WARNING: t Risk of electrical shock. Failure to observe may result in personal injury or death. Capacitor will retain a charge for a period of time after removal of power. Do not attempt maintenance until capacitor has discharged. 2. Open the door and turn the on/off switch to the off position. Check to see that the orange power indicator light is out before petfoming any maintenance. If the orange power indicator light is on, the capacitor is retaining a charge. Wait until the light goes off before performing any of the follwing procedures. 3. Remove the four cap screws on the panel using a 3-mm allen wrench. (See Figure 7.1.) 4. Carefully lift the driver module out of the enclosure using the two lifting knobs shown in figure Disconnect the old module wiring and connect the replacement module wiring according to the following procedure: a. Check to make sure the replacement driver panel and the orange terminal blocks holding the wires on the old driver panel are labeled, indicating the location of each block on the replacement panel. Remove the terminal blocks from the old driver module. b. Disconnect all ground wires from the ground stud. c. Remove the black and red power wires from the gray terminal block on the old module and reinsert them in the gray terminal block on the new module. d. Insert each orange terminal block in the replacement module in the same location that it was on the old module. If wiring needs to be reconnected to any of the terminal blocks, refer to Section 3, Installation, particularly the pages on installing the driver and connecting the applicator(s) to the driver. e. Connect the ground wires to the ground stud on the replacement module. f. Check to be sure all wiring is secure at all connections. 5. Carerfully insert the new module in the enclosure and replace the four cap screws. 6. Restore external power to the driver, turn the on/off switch to the on postion and close the door. Publication No ONordson Co oration 1994 All Rights Fi eserved Issued 1 O/94

40 7-4 Disassembly and Repair -USE LlFllNG KNOBS Figure 7.7 Replacing the Driver Module

41 Parts List 8-1 Section 8 Illustrated Parts List Column /den tifica tion The Item No. column indicates the number assigned to the part in the associated figure. A dash is used for parts that are not shown. The Part No. column indicates the Nordson part number for that part. A dash signifies that the item is a nonsaleable part or a nonsaleable subassembly of a saleable assembly. The Description column gives the name of the part together with its dimensions and other physical properties, where appropriate. The Req d column indicates the quantity required per unit or assembly. When the item is listed for reference only or the quantity is not applicable, the term Ref or a dash, respectively, appears in the column. Publication No BNordson Co ration 1994 All Rights I? eserved Issued 1 O/94

42 8-2 Parts List E-750 Electric Applicator Parts List Issued 1 O/94 ONordson Co oration 1994 All Rights g eserved Publication No

43 Parts List 8-3 Figure 8.1 E- 750 Electric Applka tor Publication No ONordson Co ration 1994 All Rights 7? eserved Issued 1 O/94

44 8-4 Parts List Figure 8.2 Electric Driver Parts Electric Driver Parts List Item No. Part No. Description Driver, E-750 Applicator Standoff, Hexagonal Module, Driver Enclosure Twminal Rlmk 5 I Req d I Issued 1 O/94 ONordson Co oration 1994 All Rights F;I esewed Publication No

45 Parts List 8-5 Recommended Spare Parts List Publication No ONordson Co oration 1994 All Rights w eserved Issued 1 O/94

46

47 Technical Data 9-1 Section 9 Technical Data Specification Summary E-750 Electric Applicator Working hydraulic pressure, maximum 1500 psig (10.3 MPa) Maximum cycles (Driver) 3000 cycles per minute Operating temperature, maximum 375 F (190%) Gun heating method RTD cant rol led cartridge heater Electrical requirements Heater: Coil: Dimensions 24OV, 50/60 Hz 200 watts 1.2 AMP 7 MS, 300 MA Cont. See Figure 9.1 Electric Driver Input Voltage 240 VAC, 50/60 Hz Input Current Depends on cycle rate: 1 amp per 120 cycles per second Input Trigger Any 12 to 28 VDC signal Driver Output Dimensions Controlled high voltage DC power to applicator coil(s) See Figure 9.2 Publication No ONordson Co oration 1994 All Rights g eserved Issued 1 O/94

48 Technical Data w 4.23 (I 07.44) NOTE: DIMENSIONS IN INCHES (MILLIMETERS IN PARENTHESES) Figure 9.1. Applicator Dimensions Issued 1 O/94 ONordson Cor ration 1994 All Rights IF eserved Publication No

49 Technical Data I 254) ( LlL // // / / I 6.5 NOTE: DIMENSIONS IN INCHES (MILLIMETERS IN PARENTHESES) Figure 9.2. Driver Dimensions Publication No ONordson Co oration 1994 All Rights Fi eserved Issued 1 O/94

50 9-4 Technical Data Nordsor? Solvent Type R Cleaning WARNING: Avoid contact with eyes and prolonged contact with skin. Harmful if swallowed. DO NOT store in open or unmarked containers. Refer to Material Safety Data Sheet for emergency first aid procedures. Failure to follow these instructions may result in personal injury. WARNING: Uncontrolled heating of Type R solvent can result in a fire hazard. DO NOT heat with an open flame. DO NOT heat above 475 F (246 C). Failure to follow these instructions may result in personal injury and/or property damage. n 10 CAUTION: DO NOT use Type R solvent with Polyamide, Surlyn, Polyester, or similar high performance hot melt materials. DO NOT store at temperatures above 120 F (49 C). Failure to follow these instructions may result in equipment and/or property damage. Solvent/Adhesive Compatibility If the compatibility of a particular solvent/adhesive combination is questionable, consult your adhesive supplier or perform the following test: 1. Heat a small amount of the solvent/adhesive mixture above the adhesives application temperature. 2. Incompatibility is indicated if one or more of the following changes are noted: Discoloration Increase in viscosity Gelling Separation of ingredients Sharp drop in viscosity Usage 1. A controlled heating device (for example, a small deep fat fryer or thermostatically controlled hot plate) should be used to heat the solvent. 2. To clean hot melt coated parts such as nozzles, filters, etc., soak them in solvent heated to just above the recommended adhesive application temperature. n t WARNING: DO NOT heat above 475 F (246%). Failure to follow this instruction may result in personal injury and/or damage. Issued 1 O/94 ONordson Co oration 1994 All Rights g eserved Publication No

51 Technical Data Storage Approvals For ease of pouring, store Type R solvent at a temperature of about 70 F (21 C). Type R solvent meets the following requirements: 1. Complies with FDA regulations , , , , , , , and USDA approved for use in meat and poultry processing plants for cleaning hot melt adhesive applicating equipment provided it has no. direct contact with the food product. Publication No ONordson Co oration 1994 All Rights g eserved Issued 1 O/94

52

53 Optional Parts and Equipment IO-I Section 10 Optional Parts And Equipment Introduction Section 10 includes those parts, kits, and equipment that are available for use with the E-750 Electric Applicator. In addition to the standard pages already included in this section, instruction sheets for any kits or equipment ordered later should be inserted here. Hot Melt Nozzle Cleaning Kit Nozzle Cleaning The cleaning kit consists of a pin vise and three vials of nozzle probes in a wood case. All items listed in the parts list may be ordered separately. DO NOT attempt to clean a nozzle by heating it with a torch or other open flame device. The intense heat created by an open flame device may result in the following: Fire Charring the hot melt in the nozzle thus complicating the cleaning procedure Loosening the nozzle orifice causing it to blow out under system pressure Follow the nozzle cleaning procedure described below. To select the correct probe for cleaning a nozzle, first determine the nozzle orifice diameter. Select the largest diameter probe that is still smaller than the nozzle orifice diameter. When cleaning hot melt nozzles, place the nozzles in a container of Nordson Type R Cleaning Solvent. Using a controlled heating device (e.g., a small deep fat fryer or thermostatically controlled hot plate), heat the solvent above the melt temperature of the hot melt. n 80 WARNING: Use safety glasses, safety gloves (P/N ), and other protective clothing to prevent injury from splashed hot material. n 8 WARNING: The flash point of Type R Solvent is 572 F (300X) to avoid fire. DO NOT heat this material above 475 F (245-C). DO NOT heat Type R Solvent with an open flame or in an uncontrolled heating device (for example, a small pan on an unregulated hot plate). Failure to follow this instruction may result in personal injury and/or property damage. See Section 9 Technical Data for further information on Type R Cleaning Solvent. Remove the nozzle from the cleaning solvent and insert the probe through the nozzle orifice opposite the direction of hot melt flow. Publication No ONordson Co oration 1994 All Rights g eserved Issued 1 O/94

54 1 o-2 Optional Parts and Equipment Nozzle Cleaning Kit PaHs List I Part No. Description Req d I I Probe Selection Chart NOTE: Be certain to insert the probe through the nozzle in the proper direction. Inserting the probe in the wrong - direction could result in damage to the nozzle; Issued 1 O/94 ONordson Co oration 1994 All Rights x eserved Publication No