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Manual, Hot Melt Applicator Model VII

1. LD gt Ww ho I I s WA D gt TT gt ENSSSSSNNNNNNNNNNS BEC 7 RX HMR A Figure 22 4 Way Air Control Valve Part No 244 244 503 656 981 503 243 243 981 243 243 270 270 271 973 052 737 512 511 053 515 519 042 044 360 402 PARTS LIST Description Kit Service 4 Way Air Valve Gasket Valve Valve 4 Way Air Control Screw 8 32 x 0 62 in w Lock Patch Spacer Detent Seat Poppet Screw 8 32 x 0 50 in w Lock Patch Link Shifter Pin Detent Poppet Spool Body Air Control Valve Plug Pipe 1 8 NPTF ship with item Req d Fh ONEN tomi mbly Divisi TECHNICAL PUBLICATION 41 7 99 4041 10 39 12 13 f 16 7 m d SCH 1 20 21 149 4 240 711 78 2 5 6 2 3 Figure 23 HM VII Tank Assembly 5 z 3 8 ie 3 So O te c 3 e ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 Rights Reserved 41 7 100 Part No 240 484 940 191 241 370 241 371 973 402 750 165 240 677 940 161 241 364 983 150 240 468 981 090 152 695 241 363 152 691 981 219 240 464 152 697 973 028 973 960 240 703 240 826 983 140 240 466 240 456 954 020 940 141 901
2. Figure 11 230 VAC Wiring Diagram HM VII Applicator TAY weit my ISSUED 1 82 SUPERSEDES LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 71 Figure 12 460 VAC Wiring Diagram HM VII Applicator je 9 ISSUED SUPERSEDES ams CORPORATION 190 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION ISSUED 1 82 000000000000 SUPERSEDES Figure 13 200 VAC Wiring Diagram HM VII Applicator LITHO U S A Symbol 41 7 73 74 TABLE 7 DEFINITION OF ELECTRICAL SYMBOLS Part No Description 1 270 826 Circuit Breaker 200 230 VAC SW 937 140 Main Switch 460 VAC FUSE 939 016 Fuse 1 amp 939 047 Fuse 10 amp 939 019 Fuse 15 amp 933 053 Post Fuse P1 939 525 Light White Indicator P2 939 524 Light Amber Indicator SEN 240 665 Hose w Sensor 1 ft HL 240 713 Tank Heat Limiter TR 240 597 Transformer 230 460 VAC 243 921 Transformer 200 VAC CRH 937 289 Hose Control Relay CRT 937 036 Tank Control Relay HTC 240 567 Controller Hose Temperature 240 537 Controller Tank Temperature SV 901 081 Valve Solenoid 1 933 044 Terminal Board 4 Station TB2 933 074 Terminal Board 8 Station TB3
3. 5 ol Ea E 69 47 68 149 19 195 Figure 17 Model VII Applicator Electrical Cabinet LITHO U S A ISSUED 1 82 SUPERSEDES Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 83 29 PA 149 18 270 195 Figure 18 Model VII Applicator Hydraulic Section SALSA ESA SEH E Packaging Assembly Division 41 7 84 Atlanta Georgia TECHNICAL PUBLICATION PA 149 17 14 270 195 Figure 19 Model VII Applicator Adhesive Output Section ISSUED 1 82 SUPERSEDES LITHO U S A Item No Part No Description Req d Assembly Heating and Control Ref HM VII 1 271 828 Hose w Retainer 1 ft 1 2 271 827 Hose w Sensor 1 ft 1 3 240 644 Support Hose 1 4 600 168 Tag Inspection 1 5 Tag Warning 1 6 981 055 Screw Pan Head 8 32 x 8 0 25 in 7 270 168 Panel Outside Tank 1 Panel Outside 1 240 697 Insulation Top Left 1 240 698 Insulation Lower 1 270 171 Insulation Top Right 1 981 856 Nut 1 4 Turn 2 981 855 Receptacle 1 4 Turn 2 Receptacle Electrical 1 Connector 981 014 Screw Pan Head 4 40 x 4 0 25 1n 984 104 Nut Hex 4 40 4 8 981 160 Screw Pan Head 10 32 x 6 0 50 in 9 240 701 Cover Drain Valve 1 10 983 120 Lockwasher Split No 10 6 11 984 120 Nut Hex 10 32 9 12 Panel Front Tank 1 240 638 Insulation 1 981 857 Stud 2 981 858
4. Terminal Ring Tongue 2 32 981 000 Screw Fillister Head 5 40 x 2 0 25 in 33 240 471 Cover Sensing Bulb 1 34 981 130 Screw Hex Head 10 32 x 3 0 50 in 35 983 120 Lockwasher Split No 10 3 36 981 064 Screw Pan Head 8 32 x l 0 38 in 37 973 403 Plug Pipe 1 16 NPTF l 38 240 712 Deflector Hot Melt Adhesive 1 39 983 110 Lockwasher No 8 2 40 981 020 Screw Pan Head 6 32 x 1 0 25 41 983 100 Lockwasher 6 1 900 236 Paste Teflon TABLE 10 OPTIONAL FILTER SCREENS Part No Description 161 104 Screen Filter 0 004 in mesh 161 106 Screen Filter 0 006 in mesh 161 109 Screen Filter 0 009 in mesh 161 112 Screen Filter 0 012 in mesh 161 115 Screen Filter 0 015 in mesh 161 120 Screen Filter 0 020 in mesh ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 Riqhts Reserved a Packaging and Assembly Division 41 7 102 Atlanta Georgia TECHNICAL PUBLICATION 6 7 8 149 3 240 677 Figure 24 Filter Assembly PARTS LIST Item No Part No Description Req d 240 677 Filter Assembly VII Ref 1 Bung Filter See Service Parts List 2 941 240 O ring Viton 1 25 x 1 44 in 1 3 161 106 Screen Filter 0 006 in mesh 1 4 240 457 Core Filter 1 5 240 459 Support Filter 1 6 240 458 Screw Hex Head 1 4 20 x 1 5 50 in 7 240 749 Tag Filter Warning 1 8 981 905 Screw Drive 2 56 x 0 19 in 1 0 006 in specified ot
5. Mounting w Switch 1 981 031 Screw Flat Head 6 32 x 2 0 38 in 241 030 Mounting Switch 1 937 140 Switch 460 VAC 1 241 031 Cover Switch 1 981 161 Screw Pan Head 10 32 x 2 0 38 in 981 020 Screw Pan Head 6 32 x 4 0 25 in 983 100 Lockwasher Split No 6 4 240 537 Controller Tank Temperature 1 933 053 Post Fuse 1 939 016 Fuse 1 amp 1 985 101 Rivet Pop 4 901 586 Knob 1 984 529 Nut Speed 3 981 084 Tubing Insulation 2 0 ER Door Access 1 981 857 Stud 1 4 Turn 1 981 858 washer 1 4 Turn 1 136 418 Nameplate Oval 1 Hinge Access Door 1 981 005 Screw Round Head 5 40 x 3 0 44 in 984 100 Nut Hex 5 40 3 981 074 Screw Round Head 8 32 x 6 0 50 in 939 525 Light Indicating White 1 ISSUED 1 82 SUPERSEDES Rights Reserved NORDSON CORPORATION 1982 9 Packaging and Assembly Division 41 7 88 Atlanta Georgia TECHNICAL PUBLICATION PARTS LIST Continued Item No Part No Description Req d 939 524 Light Indicating Amber 1 939 110 Strap Cable 2 937 131 Breaker Circuit 35 amp 1 981 855 Receptacle 1 4 Turn 1 981 856 Nut 1 4 Turn 1 984 111 Nut Hex 8 32 6 939 047 Fuse 10 amp 1 939 019 Fuse 15 amp 2 933 133 Post Fuse 3 19 240 567 Controller Hose Temperature 1 20 981 149 Screw Round Head
6. Plate Warning Hot 2 939 016 Fuse 1 amp 1 939 047 Fuse 10 amp 1 939 019 Fuse 15 amp 2 TABLE 8 APPLICATOR DESCRIPTION Part No Voltage Electrical Wiring Installation Pump VAC Schematic Diagram Kit 240 748 230 Fig 8 Fig 11 241 116 244 405 270 057 230 Fig 8 Fig 11 241 116 270 116 241 102 460 Fig 9 Fig 12 272 753 244 405 270 058 460 Fig 9 Fig 12 272 753 270 116 243 926 180 220 Fig 10 Fig 13 241 116 244 405 270 O71 180 220 Fig 10 Fig 13 241 116 270 116 TABLE 9 MODEL VII SERVICE PARTS LIST Part No Description Qty 240 825 Tube Hydraulic Connector 1 240 826 Manifold Crossover 1 240 827 Plunger Hydraulic 1 270 073 Door w Information Plate 1 41 7 w Issued 8 90sONordson Corporation 1990 Packaging and Assembly Division 41 7 78 Atlanta Georgia TECHNICAL PUBLICATION TABLE 9 MODEL VII SERVICE PARTS LIST Continued Part No Description 240 240 240 240 240 241 241 240 240 240 240 240 503 503 503 940 940 940 952 954 240 152 152 940 940 940 954 241 503 503 503 981 240 240 981 983 983 984 240 240 240 240 240 986 289 830 831 833 835 372 371 838 839 840 841 540 656 658 731 125 141 420 130 020 842 695 697 141 161 191 020 114 735 736 737 156 832 674 156 021 120 129 913 914 834 656 657 001 ISSUED 1 82 Tube Crossover Panel Front Tank Base Model VII Controller Tank Temperature Bung Filter
7. Stud 1 4 Turn 1 981 858 washer 1 4 Turn 1 Door Access 1 901 586 Knob 1 240 719 Harness Wire 1 931 014 wire 18 Black 9 0 ft 931 072 wire 14 White w Orange 6 7 ft 931 133 wire 10 Natural w Brown 13 0 ft 933 054 Terminal Ring Tongue 4 933 071 Terminal Ring Tongue 8 933 126 Terminal Spade 2 933 129 Terminal Ring Tongue 10 933 210 Terminal Spring Spade 1 Marker Wire 939 110 Strap Cable 17 939 525 Light Indicator White 1 939 524 Light Indicator Amber 1 136 418 Nameplate Oval 1 984 529 Nut Speed 3 937 131 Breaker Circuit 35 amp 1 939 110 Strap Cable 2 ISSUED 1 82 SUPERSEDES LITHO U S A Packaging and Assembly Division Atlanta Georgia PARTS LIST Continued TECHNICAL PUBLICATION 41 7 87 Item No Part No Description Req d 931 084 Tubing Insulation 2 0 ft 241 032 Cover Panel 1 18 Panel Front Control 460 VAC 1 Unit Only 270 175 Panel Front 1 241 121 Harness Control Panel Wiring 1 931 133 wire 10 GA Natural w Brown 6 9 ft 933 071 Terminal Ring Tongue 8 931 072 wire 14 GA White w Orange 12 2 4t 931 014 wire 18 GA Black 9 0 ft 939 110 Strap Cable 0 Marker Wire 933 129 Terminal Ring Tongue 6 933 054 Terminal Ring Tongue 8 933 126 Terminal Spade 6 241 121
8. Washer Special 2 985 101 Rivet Pop 2 13 Plate Tank Temperature 1 14 985 101 Rivet Pop 12 15 270 172 Solenoid Valve and Filter 1 Regulator 1 8 NPT 901 741 Filter Regulator w Gauge 1 1 8 NPT 270 173 Valve Solenoid 115 VAC 1 1 8 NPT 973 000 Nipple Pipe 1 8 NPT Close 1 973 002 Nipple Pipe 1 8 NPT x 1 1 50 973 372 Bushing Reducer 1 4 NPT x 1 1 8 NPT ISSUED 1 82 SUPERSEDES NORDSON CORPCRATION 1982 Packaging and Assembly Division Atlanta Georgia PARTS LIST FOR FIGURES 15 THROUGH 19 All Rights Reserved TECHNICAL PUBLICATION 41 7 85 Packaging Assembly Division Atlanta Georgia TECHNICAL PUBLICATION PARTS LIST Continued Item No Part No Description Req d 900 236 paste Teflon 16 241 175 Gasket Manifold 1 17 241 174 Gasket Tank T 18 Panel Front Control 200 230 1 VAC Units Only 270 175 Panel Control 1 270 826 Breaker Circuit 20 30 20 amp 1 240 659 Bracket Breaker 1 981 161 Screw Pan Head 10 32 x 2 0 38 in Hinge Access Door 1 981 005 Screw Round Head 5 40 x 3 0 44 in 984 100 Nut Hex 5 40 3 981 855 Receptacle 1 4 Turn 1 981 856 Nut 1 4 Turn 1 981 020 Screw Pan Head 6 32 x 4 0 25 in 983 100 Lockwasher No 6 4 240 537 Controller Tank Temperature 1 933 053 Post Fuse 1 939 016 Fuse 1 amp 1 985 101 Rivet Pop 4 981 857
9. Wax Pump Air Operated 1 w Enclosure 71 244 405 Pump Air Operated w 244 404 1 71 270 116 wax Pump Air Operated 1 w 270 119 72 981 160 Screw Pan Head 10 32 x 1 0 50 in 73 270 125 Enclosure Air Motor 1 74 240 591 Cover Enclosure 1 75 244 408 Plate Enclosure 1 ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 Atlanta Georgia Packaging and Assembly Division TECHNICAL PUBLICATION 41 77 91 Rights Reserved 34 33 26 27 25 24 23 22 20 19 18 36 ISSUED 1 96 Atlanta Georgia 2 3 4 5 Packaging and Assembly Division A i lt 7 gt 7 d E f Ree TES CA ES 8 22 P 7 10 f 11 13 DC d P NTS 15 TECHNICAL PUBLICATION Figure 20 VII Piston Pump SUPERSEDES 1 82 4104002 PARTS LIST FOR FIGURE 20 41 7 93 Item No Part No Description Req d 244 405 Pump Hydraulic Air Operated Ref Piston HM VII IX 1 243 111 oHead Cylinder 1 2 981 235 oScrew Hex Head 1 4 20 x 4 4 00 in 3 983 140 oLockwasher Split 0 25 in 8 4 243 529 oBracket Enclosure 1 5 503 656 oGasket Valve 2 6 981 222 oScrew Hex Head 1 4 20 x 4 1 50 in 7 oValve 4 Way Air Control See 1 Figure 22 8 240 530 oCollar Trip 1 9 981 101 oScrew Socket Set 10 32 x 0 187 in 4 10 240 531 Body Hydraulic Pump 1 11 276 716 oPiston HM VII 1 12 981 411 oScrew Cap Hex Head
10. Abnormal Indication Drain and flush old adhesive Add new adhesive to tank er oO _ _ CG ISSUED 9 81 SUPERSEDES LITHO U S A Packagi d Assembly Division Adenia Georgie _ TECHNICAL PUBLICATION 40 0 19 HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION F4 Check for cold air blowing on gun and or low ambient temperature NORMAL INDICATION Normal Normal Indication Check ambient temperature with with adhesive manufacturer little air movement around gun Abnormal Indication Cold air blowing on gun and or low ambient temperature Use one or more of the following steps to cor rect the problem 1 Protect gun from air movement 2 Increase adhesive temperature slightly 3 Preheat substrate 4 Heat ambient air AIR ADHESIVE Gl Check adhesive tank full of molten adhesive NORMAL INDICATION Ad Normal Indication Pro hesive tank full of ceed to step G2 molten adhesive Abnormal Indication Ad hesive melt tank empty Refill tank and operate guns until bubble dis appears G2 Check viscosity of ad hesive NORMAL INDICATION Normal Indication See hesive viscosity within MOISTURE BUBBLES IN AD normal limits HESIVE BEAD ON SUBSTRATE ISSUED 9 81 SUPERSEDES 5 77 C NORDSON CORPCRATION 1981 All Rights Reserved 4240 0 20 Nordson and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION HOT MELT TRO
11. Re place main circuit breaker switch and restore system to normal 5 Check for loose or broken wiring connections on all elec trical components Check all wiring for exposed wire shorting to ground or to another wire or terminal NORMAL INDICATION All wiring ABNORMAL INDICATION Re connections tight with no place defective wiring broken or exposed wires Pro and tighten loose con ceed to the next step nections Restore sys tem to normal operation A6 Check transformer output voltage in the following manner a Remove wire at either terminal 1 or X2 on the secondary Side of transformer and cover exposed wire terminal with tape b Remove wire at either terminal 1 or 12 on the transform er terminal board and cover exposed wire terminal with tape c Restore input electrical power to the applicator and close main circuit breaker switch 6 ISSUED 1 82 SUPERSEDES 1 75 NORDSON CORPORATION 1982 All Riqhts Reserved Packaging and Assembly Division 41 7 44 Atlanta Georgia TECHNICAL PUBLICATION TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued Measure the voltage between 1 and X2 the transformer NORMAL INDICATION 115 VAC Pro ABNORMAL INDICATION No ceed to the next step voltage Replace transformer and restore system to normal opera tion e Measure the voltage between terminals 1 and 12 on transformer terminal board NORMAL INDICATION 77 VAC Dis ABNO
12. Remove perforated end panel and transformer terminal board cover 3 Reconnect hose circuit wires Nos 10 and 11 to provide 1 or 2 VAC less to the hose and gun circuit 4 Reinstall terminal board cover and perforated end panel 5 Restore input electrical power to the applicator and close main circuit breaker switch and hose circuit breaker Take amperage reading on the hoses De Repeat this procedure until the amperage reading is less than 30 amps but no less than 24 amps In order to prevent hose and relay damage due to exces sive current voltage must be recalculated and taps reconnected any time hose length gun type or number of guns in the circuit is changed INSTALLATION OF MULTIPLE MODEL VII UNITS Installation of multiple Model VII hot melt applicator systems at the same location may result in hazardous voltages on the hose fittings This condition can occur ISSUED 1 82 SUPERSEDES 4 78 LITHO U S A A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 77 15 when input electrical power connected to hose trans formers are related to different phases of the same source or when two or more units are connected to the same phase but 180 deg out of phase with each other In any installation involving multiple Model VII hot melt applica tor systems all hose circuit electrical input supplies must be confirmed in phase and on the same leg of the input power source This is accomp
13. Set pump pressure regulator to 30 psi 205 kPa Turn the circulation valve knob counterclockwise until the pump is stroking at a rate of 10 to 15 strokes per minute Lock the circulation valve in position by turning lower knob full clockwise ISSUED 1 82 SUPERSEDES 4 78 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 21 22 23 Set input air pressure to the gun to desired setting 24 The system is ready for use DAILY OPERATION DAILY STARTUP Ls Close applicator main circuit breaker switch 2 Check tank level and add adhesive material as necessary 34 Adjust tank and hose temperature controllers to desired setting 4 When the system reaches application temperature adjust input air pressures to the pump and gun to the desired settings DAILY SHUTDOWN T Open main circuit breaker switch on applicator 2 Reduce pump and gun air pressures to zero at the regulators ADHESIVE LOADING Refill the adhesive tank with fresh clean adhesive when material level in the tank drops below one half full NOTE Keeping adhesive level in the tank above one half full eliminates the problem of starving the pump because the tank ran out of molten adhesive To prevent the adhesive supply from becoming contaminated store the fresh adhesive in a closed container 2 certain the adhesive added is clean and free of taminants Do not allow contaminants to enter the hot melt t
14. applicator 2 Set air motor air pressure regulator for zero pressure full counterclockwise 3 Crack open filter drain to relieve trapped hydraulic pressure 4 Remove air motor enclosure back panel by removing four Screws 5 Remove air motor enclosure from pump assembly by removing one screw on top of enclosure 6 Disengage solenoid valve electrical connector from hose end of applicator Ta Remove solenoid valve and filter regulator from air motor control valve 7 8 Remove three screws and lockwashers anchoring pump mount to tank top 9 Pull pump assembly straight up and out of tank to disengage connecting tube from crossover manifold 10 Remove four way air control valve 7 from air motor by removing four screws 6 and lockwashers 3 11 Remove four screws 2 and lockwashers 3 from air cylinder head 1 Remove cylinder 33 and cylinder head 1 from pump assembly ISSUED 3 82 SUPERSEDES 1 82 LITHO U S A 12 13 14 15 16 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 57 Check slab gaskets for damage NOTE Any evidence of cuts hardening or other physical damage constitutes gasket damage beyond repair Re place gaskets with Nordson P N 940 420 Hold piston shaft 21 with a wrench and remove retaining nut 26 and washer 27 from air motor piston Remove both piston cup washers 25 piston seal washer 24 and piston cups 23 from piston
15. hot plate fire hazard may exist if an open flame or uncontrolled 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 should be used to heat the solvent above the melting point of the adhesive PHYSICAL PROPERTIES Flash Point 550 F 288 C Freeze Point 32 F 0 C Vapor Odor None Color Clear Viscosity 5 600 CPS 77 F 25 C Pounds Gallon kilograms liter 9 1 Molecular Weight 3 300 Non irritating to skin Non toxic Type R solvent meets the requirements of the following FDA regulations 175 105 175 300 175 380 175 390 176 170 176 180 177 1010 177 1210 USDA approved for use in food processing plants for cleaning hot melt adhesive applicating equipment as long as there is no direct contact With the food Do not take internally Keep out of reach of children USAGE Type R solvent may not be compatible with all adhesives Before using solvent with an adhesive for the first time test for compatibility using the procedure described below NOTE For ease of pouring store Type R solvent at room temperature 70 F 21 C Do not store Type R solvent at temperatures over 150 F 65 C ISSUED 2 85 SUPERSEDES 3 81 ONORDSON CORPORATION 1985 LITHO U S A All Rights Reserved Publication No 104 708A 1 v Packaging and Assembly Division 59 1 4 Nordson Atlanta Georgia TE
16. 10 32 x 7 0 38 in 21 933 130 Block Terminal High 1 Temperature 22 240 667 Cover High Temperature 1 Terminal Block 23 240 669 Bracket Terminal Block 1 24 981 028 Screw Fillister Head 6 32 x 2 0 75 in 25 984 101 Nut Hex 6 32 4 26 Assembly Tank HM VII 1 See Figure 23 27 240 600 Screen Tank 1 28 270 194 Cover Tank 1 29 240 480 Knob Lock Circulation Valve 1 30 136 477 Knob Adjustment Circulation 1 Valve 31 981 115 Screw Oval Head 10 32 x d 0 50 in 32 983 021 Washer Flat 10 Brass 1 33 939 110 Strap Cable 4 34 240 640 Panel Rear Tank 1 Panel Rear 1 240 643 Insulation Rear 1 981 857 Stud 1 4 Turn 2 981 858 washer 1 4 Turn 2 35 240 675 Lid Loading 1 Lid Loading 1 Hinge Loading Lid 1 243 328 Guard 1 901 582 Knob 1 981 082 Screw Pan Head 8 32 x 1 1 25 in 983 110 Lockwasher External 8 1 Ee ISSUED 1 82 SUPERSEDES LITHO U S A Packaging and Assembly Division Atlanta Georgia PARTS LIST Continued TECHNICAL PUBLICATION 41 7 89 Item No Part No Description Req d 985 101 Rivet Pop 6 36 981 200 Screw Fillister Head 1 4 20 9 x 0 50 in 37 981 156 Screw Pan Head 10 32 x 1 1 00 in Brass 38 240 592 Cover Control Cabinet 1 39 240 585 Panel Rear Control 1 Panel Rear 1 981 857 Stud 1 4 Turn 2 981 858 ee washer 1 4 Turn 2 40 240 588 Pan
17. 205 240 667 981 020 981 337 PARTS LIST FOR FIGURE 23 Description Assembly HM VII Tank VI O ring on 0 81 x 0 94 in Manifold Filter Manifold Plug Pipe Valve O O O O O O O o 1 8 NPT Pressure Relief See Figure 25 Filter See Figure 24 Valve Assembly Circulation See Figure 25 O ring Viton 0 62 x 0 75 in Screw Hex Head 5 16 18 x 3 00 in Lockwasher 0 31 in Holder Hose Fitting Screw Pan Head 8 32 x 0 19 in Sleeve Sealing Fitting Hose Sleeve Insulating Screw Socket Head 12 5 ns Insulator Hose Fitting Sleeve Support Nipple Pipe 1 4 NPT x 4 00 in Cap Pipe 1 4 NPT Valve Tank Drain See Figure 27 Manifold Crossover Lockwasher Split 0 25 in Screw Hex Head 1 4 20 x 1 75 an Tube Hydraulic Connector 1 4 28 x Ring Backup Single 0 50 x 0 62 in O ring Viton 0 50 x 0 62 in Thermometer 1509 to 500 F 65 to 290 C Cover High Temperature Terminal Block Screw Pan Head 6 32 x 0 25 in Screw Hex Head 5 16 18 x 2 50 41 7 Issued 8 90 80Nordson Corporation 1990 Req d Ref ka P P G ka Prod DIB Dh UD CO F2 Packaging Assembly Division Atlanta Georgia PARTS LIST Continued TECHNICAL PUBLICATION 41 7 101 Item No Part No Description Req d 30 240 668 Spacer Leg 4 31 240 713 Heat Limiter Tank 1 933 006
18. 3 8 24 x 0 75 1 13 240 533 oCage Ball Siphon 1 14 900 023 11 440 Stainless Steel 0 75 in 1 15 240 534 oSeat Siphon Ball 1 16 288 122 oSeal Pump High Volume 1 17 986 711 oRetaining Ring Internal No 106 1 Spiral 18 983 184 oLockwasher Bearing 1 19 984 545 oLocknut Bearing 1 20 243 109 oMounting Pump 1 21 276 718 o Plunger 1 22 952 130 oU cup Viton 1 23 240 540 oPiston Cup Air Motor 2 24 240 541 oDisc Piston Seal 1 25 240 542 oWasher Piston Cup 2 26 984 153 oLocknut Hex 3 8 16 UNC 2B 1 27 983 061 oWasher Flat 0 406 x 0 812 x 0 065 in 1 28 ee oTube Crossover 1 29 973 402 oPlug Pipe Socket Flush 1 8 NPTF 1 30 o Snapper Assembly 1 276 645 ooU spring Snapper 1 276 647 oo Snapper Weldment Control Arm 1 986 320 ooRetaining Ring External No 25 T E ring 276 648 ooMount Assembly Snapper 1 31 981 814 oScrew Shoulder 1 4 20 2 32 940 141 oO ring Viton 0 500 x 0 625 x 2 0 063 in 41 7 w Issued 1 96 ONordson Corporation 1990 Packaging and Assembly Division 41 7 94 Atlanta Georgia TECHNICAL PUBLICATION PARTS LIST Continued Item No Part No Description Req d 33 240 543 oCylinder Air 1 34 940 420 oO ring Viton 3 250 x 3 375 x 2 0 063 in 35 954 020 oBack up Ring Single 1 2 X 5 8 1 36 276 717 oWasher 1 00 x 0 38 x 0 10 in 1 37 288 121 oWasher 1 045 x 0 819 in 1 Plunger Assembly service kit P N 276 827 available for normal applications and service kit P N 276
19. 50 x 0 62 in 4 981 120 Screw Pan Head 6 32 x 0 25 in 2 981 083 Screw Pan Head 8 32 x 0 25 in 2 981 219 Screw Socket Head 1 4 28 x 1 25 in 4 983 150 Lockwasher Split 0 31 in 7 244 244 Valve 4 Way Air Control HM VII 1 244 246 Kit Detent 1 243 512 Detent 1 243 519 Pin Detent 1 468 001 Blank Pin 1 900 424 Compound Thread Locking 503 737 5 2 981 052 Screw w Lock Patch 8 32 x 0 62 in 2 270 040 Kit Seal Pump Use with 244 244 Air Valve 1 240 540 Cup Piston Air Motor 2 503 656 Gasket Valve 4 940 141 O ring Viton 0 50 x 0 62 in 2 940 420 O ring Viton 3 25 x 3 38 in 2 952 130 cup U Viton 1 954 020 Ring Backup Single 0 50 x 0 62 in 1 ISSUED 1 82 SUPERSEDES C NORDSON CORPORATION 1982 Rights Reserved 41 7 80 Packaging and Assembly Division Atlanta Georgia ISSUED 12 82 LITHO U S A TECHNICAL PUBLICATION FIGURE 18 FIGURE 17 SUPERSEDES 1 82 FIGURE 19 Figure 15 Model VII Heating and Control Assembly 9 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 81 PA 149 20 270 195 Figure 16 Model VII Applicator Cover Section ISSUED 1 82 SUPERSEDES NCRDSON CORPORATION 1982 Rights Reserved Packaging and Assembly Division 41 7 82 Atlanta Georgia TECHNICAL PUBLICATION gt P 40 41 N 1 x lt 20 48
20. 828 available for wax pumps Crossover Tube service kit P N 240 829 available which contains items 28 32 and 35 41 7 Issued 1 96 Nordson Corporation 1990 dA biy Divisi TECHNICAL PUBLICATION 41 7 95 2 3 4 5 Z T 34 H 7 2 g 27 28 d 1 26 7 A 25 4 r 7 a w w 1 24 ZZ 57 rq e i 4 N A 3 ee 5222 Z J 2 gt 57 2 SA A 18 d iG 5555 As r Ze rA i SINSSEENNNNNN CR HH gr G NI S lt L4 7 16 4104003 Figure 21 HM VII Piston Pump w Packings ISSUED 1 96 SUPERSEDES 1 82 41 7 96 PARTS LIST FOR FIGURE 21 Item No Part No Description Req d 270 116 Pump With Packings Hydraulic Ref Air Operated HM VII 1 243 111 oHead Cylinder 1 2 981 235 oScrew Cap Hex Head 1 4 20 x 4 4 00 in 3 983 140 oLockwasher Split 0 25 in 8 4 243 529 oBracket Enclosure 1 5 503 656 oGasket Valve 2 6 981 222 oScrew Cap Hex Head 1 4 20 x 4 1 50 in 7 oValve 4 Way Air Control 1 See Figure 22 8 240 530 oCollar Trip 1 9 981 101 Screw Socket Set 10 32 x 0 187 in 4 10 244 455 oBody Hydraulic Pump 1 11 276 717 oWasher 1 00 x 0 38 x 0 10 in 1 12 276 789 oPiston HM IX 1 13 981 411 oScrew Hex Head 3 8 24 x a 0 75 in 14 240 533 oCage Bal
21. 9 1 70 SUPERSEDES LITHO U S A NORDSON CORPORATION 1986 All Rights Reserved E Packagi d Assembly Division TECHNICAL PUBLICATION 40 0 11 HOT MELT FAULTS AND TROUBLESHOOTING CHART The photographs below represent samples of bead faults commonly encountered in the application of hot melt adhesives Trouble shooting procedures are outlined on the pages that follow Cold Bead Possible Causes Adhesive colder than recom mended application tempera ture hh hk oe B Ambient temperature in the application area below a NINI NI NASA normal Example Ice cream plant cold draft blow S Pr a ing on nozzle e stream of air directed at guns and nozzles radiation and convection will cool the nozzle gun and adhesive D Gun thermostat not of the proper temperature rating for the material in use E The nozzle too far from the substrate Excess Amount in Triggering Possible Causes OO I Insufficient air pressure to the gun lt B Insufficient air pressure to the pump nozzle too far from the substrate D Partially plugged nozzle ISSUED 9 81 SUPERSEDES 6 71 NORDSON CORPORATION 1981 Rights Reserved Packaging and Assembly Division Atlanta Georgia 40 0 12 Wordson Stringing Possible Causes A Adhesive too viscous B Cold adhesive C Lack of an air piloted relief valve between solenoid and gun D Old adhesi
22. 9411 4315 216 985 3710 Netherlands 31 3403 77812 31 3403 74189 New Zealand 64 9 634 0179 64 9 579 7797 Norway 47 2 656100 47 2 658858 Pakistan 92 21 568 8609 3869 92 21 568 4585 Philippines 63 2 721 1421 63 2 721 3927 Portugal 351 2 941 3874 351 2 941 3867 Puerto Rico 809 787 2474 809 780 6063 Singapore 65 459 9533 65 459 9514 Spain 34 6 3705013 34 6 3705004 Sweden 46 40 291 585 46 40 932 882 Switzerland 41 61 463 838 41 61 463 818 Taiwan 886 2 581 3172 886 2 581 3074 Thailand 66 2 5141159 66 2 2531571 Turkey 90 1 384 4085 90 1 372 1528 United Kingdom 44 84421 3171 44 84421 5358 USA Continental 770 497 3400 770 497 3500 Alaska amp Hawaii 770 497 3400 770 497 3500 Venezuela 58 2 939 111 58 2 938097 Eastern Europe Africa amp Middle East contact Nordson European Division Erkrath Germany Distributor amp Export Department 49 211 2002 0 49 211 254652 issued 3 05 NORDSON CORPORATION 1993 306 18 662 US contact numbers updated 3 05 All Rights Reserved Packaging and Assembly Division Atlanta Georgia TABLE OF CONTENTS TECHNICAL PUBLICATION 41 7 01 Section Page LIST OF ILLUSTRATIONS 41 7 03 LIST OF TABLES 41 7 04 SAFETY SUMMARY 40 1 1 EQUIPMENT FAMILIARIZATIONS 41 7 1 Introduction 41 7 1 Specification Summary 41 7 1 Functional Description 41 7 2 Feature Variations 41 7 4 Model VII Hot Melt Appli cator 460 VAC Input 41 7 4 Model VII Hot Melt Appli cator 200 VAC Input 41 7 4 Model VII Hot Melt
23. Appli cator w Wax Pump 41 7 5 Model VII Hot Melt Appli cator w Nitrogen Blanket 41 7 5 II PREPARATION FOR USE 41 7 7 Introduction 41 7 7 Unpacking 41 7 7 Inspection 41 7 7 Installation 41 7 7 General 41 7 7 Gun Installation 20 Automatic Gun e 41 7 8 Pump Installation 41 7 9 Hose Installation I 41 7 9 Hose Transformer Connection 41 7 10 Electrical Installation 41 7 12 Installation of Model VII Units 41 7 14 OPERATING INSTRUCTIONS 41 7 19 Setup and Initial Operation 41 7 19 Daily Operation 41 7 21 Daily Startup 41 7 21 Daily Shutdown 41 7 21 Adhesive Loading 41 7 21 IV MAINTENANCE 41 7 23 Introduction 41 7 23 Preventive Maintenance 41 7 24 General Maintenance 41 7 24 Material Change 41 7 24 Nozzle Cleaning 41 7 24 ISSUED 1 82 SUPERSEDES 4 78 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 02 Atlanta Georgia TABLE OF CONTENTS Continued Section IV MAINTENANCE Continued Filter Assembly Cleaning System Cleaning Corrective Maintenance Troubleshooting Chart Mechanical Summary Troubleshooting Chart Mechanical Troubleshooting Chart Electrical Summary Troubleshooting Chart Electrical Disassembly and Repair Air Operated Piston Pump Disassembly Air Operated Piston Pump Reassembly Hydraulic Pressure Relief Valve Replacement 5 Tank Temperature Controller Replacement Hose Temperature Controller Replacement a
24. Reassemble and damaged or binding com restore system to normal ponents Reassemble operation and restore system to normal operation NO ADHESIVE FLOW FROM GUN AIR MOTOR STROKING Bl Check input air pressure to guns at the filter regulator and solenoid valve NORMAL INDICATION 30 to 100 ABNORMAL INDICATION Re psi 205 to 690 kPa Pro fer to appropriate gun ceed to the next step service manual for troubleshooting pro cedure and corrective action The fault may be a failed regulator solenoid valve or gun B2 Reduce air pressure to gun to zero at the regulator and re move nozzle from gun Reset air pressure to normal setting and momentarily trigger gun Check for adhesive flow NORMAL INDICATION Material ABNORMAL INDICATION Re extrudes from gun with fer to appropriate gun nozzle removed Clean service manual for nozzle in accordance with troubleshootng pro Section IV Nozzle Cleaning cedure and corrective Restore system to normal action operation ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 38 Atlanta Georgia TECHNICAL PUBLICATION TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued AIR MOTOR STROKING ERRATICALLY OR TOO FAST NOTE Erratic stroking of the piston pump is indicated by two exhaust sounds close together followed by a pause double stroking This results because the piston is moving faster in one directi
25. Use the to the next step following chart to de termine failed seal Nordson recommends that all seals be replaced when the air cylinder is disassembled for maintenance With Piston on Up Stroke Air Leakage Location Probable Failed Seal Around shaft inside U cup pump mount pump mount b Top exhaust port Lower piston cup or upper poppet open poppet Cs Bottom exhaust port Lower poppet seal washer poppet closed d Bottom of cylinder Pump mount slab gasket e Between air valve Lower valve gasket and pump mount ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 Rights Reserved A Packaging and Assembly Division 41 7 36 Atlanta Georgia TECHNICAL PUBLICATION TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued With Piston on Down Stroke Air Leakage Location Probable Failed Seal a Bottom exhaust port Upper piston cup or lower poppet open poppet b Top exhaust port Upper poppet seal washer poppet closed of cylinder Cylinder head slab gasket Between air valve Upper valve gasket and cylinder head 9 Visually inspect four way air control valve actuating rod for binding or physical damage NORMAL INDICATION Actuating ABNORMAL INDICATION rod is straight with no evi Actuating rod is dam dence of binding Proceed aged or there is evi to next step dence of binding Re place actuating rod and restore system to nor mal operation 10 Visuall
26. are hot fied provide adequate Disassemble gun service insulation cuff on block and module to clear joint See Electrical blockage Troubleshooting Chart if hose is not heating A5 Remove filter assembly and check for blocked screen by slowly increasing pump air pressure Check for adhesive flow from manifold ISSUED 1 82 SUPERSEDES 6 78 Q NORDSON CORPORATION 1982 Rights Reserved Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 34 TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued NORMAL INDICATION Adhesive ABNORMAL INDICATION No wells up out of manifold and adhesive flow and pump pump strokes Reduce air does not stroke Prob pressure to the pump to zero lem is in the pump Re Clean and reinstall filter duce air pressure to into manifold Restore sys zero Reinstall filter tem to normal operation into manifold Proceed to next step 6 Check input air supply to filter regulator NORMAL INDICATION 50 to 100 ABNORMAL INDICATION Im psi 345 to 690 kPa Pro proper pressure indica ceed to next step tion Check input air supply Restore system to normal operation A7 Check pressure regulator and solenoid valve to air cylinder in the following manner a Set regulator for zero pressure by turning dial full counterclockwise b Shut off air supply to regulator Disconnect regulator and solenoid valve from air cylinder d Restore air supply to regula
27. block ISSUED 1 82 SUPERSEDES 2 81 NORDSON CORPORATION 1982 All Rights Reserved A Packaging and Assembly Division 41 7 12 Atlanta Georgia TECHNICAL PUBLICATION 8 Reinstall transformer block cover and secure with two screws Leave the perforated end panel off for electrical power in stallation 115 VAC Output for Control Circuit only Power Input See connection charts below Je s 77 VAC Total for hose I circuit lt r t 1 i L Figure 4 Transformer Schematic ELECTRICAL INSTALLATION The Model VII hot melt applicator is factory wired for three phase 230 VAC 460 VAC or 180 220 VAC input electrical power depending on Purchase Order requirements The following instruc tions detail the electrical power installation The Model VII hot melt applicator and associated guns and hoses contain energized electrical components with potentials that could be fatal Only qualified personnel shall install this equipment electrically Any attempt to operate this equipment on voltages other than those for which the equipment was wired can result in serious damage to the electrical system E Route three phase service line of the appropriate voltage through the hole and clamp provided in the base of the elec trical cabinet and connect wires to terminals 1 2 and 3 on the four station terminal block 1 ISSUED 1
28. cm 3 8 9 5mm 11 8 30 1 30 8 78 4 cm 0 6 1 6 Dimension does not include filter regulator and solenoid valve Figure 2 Model VII Dimensions FUNCTIONAL DESCRIPTION The Model VII hot melt applicator contains two separate sections a heating and pumping section and an electrical control section The heated section consists of an air driven hydraulic piston pump heated tank distribution manifold with filter and circula tion valve and heated hoses All electrical controls indicating lights and circuit breakers are located in the electrical con trol cabinet on the left side of the applicator Hot melt adhesive or other suitable thermoplastic material is melted in an electrically heated cast aluminum tank containing two cast in heating elements An adjustable temperature controller ISSUED 1 82 SUPERSEDES 2 81 LITHO U S A A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 3 maintains tank temperature within a range from 150 to 450 F 65 to 230 C Overtemperature protection is provided by auto matically resetting heat limiter that interrupts electrical power to the tank heaters when tank wall temperature exceeds 465 F 240 C and resets when wall temperature drops to 365 F 185 C Figure 3 shows a schematic of the hydraulic section of the Model VII hot melt applicator PUMP INLET AIR DN 37 PEN 36 6 3 34 33 i
29. connector that plugs into both manifolds The connector may or may not separate with the filter manifold Unscrew the relief valve from the back of the filter mani fold Screw a new relief valve into filter manifold Use teflon paste P N 900 236 on threads Check o ring for damage Replace if necessary NOTE Nicks cuts hardening or other physical damage to the o ring constitutes damage beyond repair Align hydraulic connector in crossover manifold and relief valve with hole in tank Push filter manifold until it seats onto tank wall ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved 41 7 64 24 26 27 28 29 30 34 4 32 33 34 35 36 37 38 39 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION Secure the filter manifold to tank using three screws Use teflon paste P N 900 236 on threads Slide hose end panel onto applicator base and tighten three nuts on bottom of panel Reinstall cover plate over drain valves and secure to hose end panel with two screws Reinstall both drain valve handles Reposition tank cover on unit and secure with six screws and lockwashers on top of panel and two screws on hose end panel Position tank lid on cover and secure with three screws and lockwashers Reinstall tank front and back covers and secure with 1 4 turn screws ulation valve into manifold Use teflon Reinstall i
30. correspondence to Nordson Corporation 11475 Lakefield Drive Duluth GA 30136 Notice This is a Nordson Corporation publication which is protected by copyright Original copyright date 1981 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 AquaGuard Blue Box Control Coat Equi Bead FloMelt FoamMelt FoamMix Helix Hot Shot Hot Stitch Meltex MicroSet MultiScan Nordson the Nordson logo OmniScan Porous Coat Posi Stop RBX Sure Bond UniScan UpTime and Versa Spray are registered trademarks of Nordson Corporation CF Controlled Fiberization Easy Screen Fibermelt Flo Tracker PrintGuard and Package of Values are trademarks of Nordson Corporation a A q R M Manual 59 0 0 Issued 9 81 1981 Nordson Corporation All Rights Reserved P amp A Division Atlanta Georgia TECHNICAL PUBLICATION 59 1 3 NORDSON TYPE R CLEANING SOLVENT The flash point of solvent is 550 F 288 C Do not heat this material above 475 F 246 C Do not heat R solvent with an open flame or in an uncontrolled heating device for example a small pan or unregulated
31. electrical power to the ap plicator The Model VII hot melt applicator contains energized electrical components with potentials that could be fatal Disconnect and lock out input electrical power to the applicator before removing any panels ISSUED 1 82 SUPERSEDES U S A 10 11 12 13 14 i5 16 157 18 129 20 21 22 23 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 63 Remove three screws and lockwashers from pump mount Lift pump assembly straight up and out of adhesive tank Remove circulation valve from manifold Remove tank front and back panels by turning two 1 4 turn screws counterclockwise Remove tank lid by removing three screws and lockwashers Remove tank cover by removing two screws on cover end and six screws and lockwashers from top of unit Remove both drain valve handles Remove cover plate over drain valves by removing two screws Loosen three nuts on bottom of hose end panel Slide hose end panel away from applicator far enough along hoses to expose manifolds and tank end Exercise extreme care not to damage insulating cuffs on hoses Damaged cuffs could allow personnel or equipment to come in contact with the electrically energized fittings when power is restored to the applicator Remove filter manifold from tank by removing three screws NOTE The filter manifold connects to the crossover mani fold through a hydraulic
32. electrical power to the applicator and close main circuit breaker switch Measure the voltage between 1 and X2 on the transformer NORMAL INDICATION 115 VAC Pro ABNORMAL INDICATION No ceed to the next step voltage Replace transformer and restore system to normal opera tion e Measure the voltage between terminals 1 and 12 on transformer terminal board NORMAL INDICATION 77 VAC Dis ABNORMAL INDICATION No connect input electrical power voltage Replace and reconnect wires to trans transformer and restore former Proceed to the next system to normal opera step tion C8 Remove either wire No 39 or wire No 10 from hose circuit breaker and check continuity across breaker NORMAL INDICATION Continuity ABNORMAL INDICATION Reconnect wire and proceed to Open circuit Replace the next step circuit breaker and re store system to normal operation ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 51 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued C9 Check continuity of wire No 39 between control relay and hose circuit breaker Check continuity of wire No 10 be tween hose circuit breaker and transformer terminal board NORMAL INDICATION Continuity ABNORMAL INDICATION Restore input electrical power Open circuit Replace to applicator and proceed to defective wire and re the next step store system to normal operat
33. one end of ring over the top of the pump mount b Keeping the coils separated force the ring over the lip of the pump mount Spiral the ring into the pump mount using a screwdriver until the entire ring is inside the pump mount om Carefully work the retaining ring into the ring groove NOTE An audible snap indicates the last ring has entered the groove and the retaining ring is installed prop erly de Place threaded end of pump body 10 into pump mount 20 and secure with locknut 19 and tab lockwasher 18 4 Install lower slab gasket 34 and U cup seal 22 into pump mount grooves Ds Screw pressure ball seat 12 onto hydraulic plunger 21 6 Insert air motor end of hydraulic plunger into pump body and into the bottom hole of pump mount 7 Place trip collar 8 over threaded end of hydraulic plun ger Push plunger out through the hole in the top of pump mount 8 Tighten set screws 9 in trip collar into groove on hy draulic plunger shaft Secure set screws with second set of set screws To prevent slippage and possible damage to trip collar or shaft ensure inner set screws bottom in shaft groove ISSUED 3 82 SUPERSEDES 1 82 LITHO U S A 10 11 12 L3 14 15 16 17 18 19 20 21 22 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 61 Assemble valve shifter 30 to pump mount Lubricate the valve shifter and trip collar with
34. part of corrective maintenance These types of incidents should be noted and eliminated during periodic cleaning and inspection unless the failure presents an immediate hazard to personnel or to the equipment Tables 3 and 5 present a synopsis of the mechanical and elec trical troubleshooting charts respectively Only typical faults and probable causes are listed If the cause of failure is not readily apparent refer to the appropriate troubleshooting chart for corrective action The alphanumeric designations listed in the Reference column specify the step in the troubleshooting chart Tables 4 and 6 detail the mechanical and electrical trouble shooting charts respectively for the Model VII hot melt application systems The tables introduce typical fault situ ations and the procedural steps necessary to isolate and confirm the fault Alphanumeric designations in these tables serve to organize the tables into related groups of procedural steps The tables then specify the corrective action to be taken based on the results of the associated procedural statement A normal indication usually requires continuation of the fault isolation procedure or re evaluation of the fault TABLE 3 TROUBLESHOOTING CHART MECHANICAL SUMMARY Fault Condition Probable Cause Ref AIR MOTOR NOT Cold adhesive in tank 1 STROKING Circulation valve blocked or 2 damaged Cold joints in hydraulic system A4 Adhesive filter blocked AS No air pr
35. plugs used on Nordson equipment one with an o ring seal and one with a pipe thread seal Some Nordson H20 noncirculating automatic guns H200 automatic guns and Series 2000 applicators use hose fittings and pipe plugs with o ring seals for the fluid ports These o ring fittings which have straight pipe threads are not interchangeable with the fittings which rely on tapered pipe thread NPT for a seal The use of the incorrect fitting may result in excessive leakage and possibly in serious burns especially with low viscosity fluids TL Identification of Fittings Required To determine which type of fittings should be used with any given gun or applicator first look at the fluid ports in the manifold The ports designed for the o ring fittings will have a smooth machined cavity on the face of the manifold around the female threads whereas the ports designed for the pipe thread fittings will have only female pipe threads See Figure 1 for an illustra tion of the difference 2 Selection of Correct Parts Use Figure 1 to select the correct part 972 628 APPLICATOR OR GUN O RING ADAPTER APPLICATOR OR GUN MANIFOLO DESIGNED um MANIFOLO DESIGNED zs SH E THREAD 1 FOR O RING FITTINGS Je FITTINGS c ej 972 061 PESE PIPE ADAPTER j C HOSE I m 97341 PIPE PLUG SMOOTH CAVITY FOR O RING SEAL 973 574 O RING PLUG 945 032 O RING REPLACEMENT Pipe Thread Fittings O Ri
36. shaft Inspect seals and washers for damage Replace as necessary Remove two outer set screws 9 in air valve trip collar 8 NOTE These two screws do not secure the collar to the shaft but instead are used to lock the inner set screws beneath them Lossen 3rd and 4th set screws 9 until collar slides freely along piston shaft Hydraulic Pump Disassembly Figure 20 1 Using the spanner wrench supplied with the unit loosen special retaining nut 19 anchoring hydraulic pump body 10 to pump mount 20 Unscrew retaining nut 19 and tab lockwasher Slide nut and lockwasher away from pump mount Pull pump body away from pump mount to remove entire hy draulic pump section Remove air valve trip collar 8 retaining nut and tab lockwasher from piston shaft as the shaft is withdrawn from the pump mount Inspect U cup seal 22 in upper face of pump mount Re place if damaged Remove siphon ball seat 15 from pump body 10 Q Avoid scratching hydraulic pump plunger 21 and inside of hydraulic pump body during disassembly and reas sembly of hydraulic pump Surface scratches on these parts may cause excessive leakage and premature pump failure Hold hydraulic pump body and push threaded end air motor of hydraulic pump plunger 21 toward siphon ball seat 15 until pressure ball seat 12 appears ISSUED 1 82 SUPERSEDES 10 72 NORDSON CORPORATION 1982 All Rights Reserved 41 7 58 8 10 g Pa
37. store system to normal operation ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 17 47 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued TANK OVERHEATS Bl Turn tank temperature controller knob to a lower tempera ture setting and observe the TANK ON indicator lamp NORMAL INDICATION Amber indi ABNORMAL INDICATION In cator lamp should go out when dicator lamp does not setting goes below actual tank go out at any setting temperature Proceed to step Proceed to the next B5 step B2 Disconnect and lock out input electrical power to applica tor Input terminal board 1 and input terminals on main circuit breaker switch are electrically energized if external power is not disconnected even if the main circuit breaker switch is open B3 Check continuity of heat limiter from TB3 3 to TB3 4 NOTE Heat limiter opens at 465 F 240 C and resets closed at 365 F 185 C NORMAL INDICATION Continuity ABNORMAL INDICATION with tank temperature below Continuity with tank 365 F 185 C Proceed to temperature above 465 F the next step 240 C Replace heat limiter and restore system to normal opera tion NOTE Even though the heat limiter failed in the closed position or indicates open above 365 F 185 C another component in the system may have failed to perform its function Continue with the fol lowing fault i
38. voltage rating and current rating should be used Refer to the Nordson equipment parts list for fuse recommendations Using incorrect or nonrecom mended fuses can present a fire hazard PNEUMATIC Nordson recommends installing a lockout three way manual valve in the air supply line to the filter regulator This valve makes it possible to relieve air pressure and lock out the pneumatic system before undertaking maintenance or repairs e 5 5 5 Pertains to FoamMelt Applicators and Nitrogen Blanket Kits Only Cylinders of compressed gas are under high pressure and can present Significant safety hazards if handled improperly Refer to OSHA General Industry Standards paragraphs 1910 101 1910 166 and 1910 167 for safety precautions that apply to the use handling and storage of compressed air SAFETY DURING OPERATION Do NOT operate Nordson equipment under the following conditions pressure higher than the rated maximum working pressure of any component in the system Near volatile or otherwise explosive gases or materials Without the covers panels and safety guards properly installed a At temperatures below 20 6 C or above 120 50 ISSUED 7 86 SUPERSEDES 2 85 NORDSON CORPORATION 1986 LITHO U S A All Rights Reserved P amp A Division Atlanta Georgia TECHNICAL PUBLICATION With hoses enclosed in any material that interferes with heat dissipation
39. 006 0004 4 0003 ic i 06 0002 i NOMOGRAPH BASED ON FLAT BEADS BEADS WITH A ROUNDED TOP SURFACE A REQUIRE APPROXIMATELY amp THE VOLUME SHOWN POUNDS GALLON 6 5 7 0 7 5 8 0 8 5 WIDTH INCHES 9 0 1 00 900 800 700 600 500 400 100 090 080 070 060 050 040 030 9 5 SPECIFIC GRAVITY D 085 090 095 100 105 1 10 POUNDS CU IN 28 ISSUED 9 1 70 LITHO U S A 032 034 SUPERSEDES 036 038 040 NORDSON CORPORATION 1986 All Rights Reserved 40 0 6 x P amp A Division Atlanta Georgla TECHNICAL PUBLICATION NOMOGRAPH FOR HOT MELT BEADS METRIC Thickness Volume Width mm liters mm _ 080 wo 30 0 70 50 20 0 60 0 0 59 15 040 05 0 30 0 3 10 0 2 0 20 01 0 15 50 0 05 40 004 0 10 0 03 e 002 20 0 01 80 15 0 05 0 005 0 004 E 0 003 10 0 04 09 0 03 0 002 0 8 0 7 Material required 100 meters Rounded Bead Flat Bead A BL F 0 66 B 1 0 1 a Volume in liters Ax Bx F Weight in Kilograms 1 ALL Specific Gravity EXAMPLE For a flat bead 0 3 mm x 5 0 mm with specific gravity of 0 9 Volume 0 3 5 0 1 0 15 literg 100 M g 10 Weight 0 3 5 0 1 0 0 9 0 135 Grams 100 M issUED 9 1 70 SUPERSEDES NORDSON CORPORATION 1986 LITHO U S A All Rights Reserved Whichever is Shorter INCHES A P amp A Division Atlanta Georgia TECHNICAL
40. 2 With input power connected measure line voltage at termi nal board 1 between terminals 1 and 2 2 and 3 and 1 and 3 NOTE If single phase operation is ulitized measure line voltage between terminals 1 and 2 Check wire No 3 attached at terminal 1 L1 NORMAL INDICATION Voltage ABNORMAL INDICATION Un specified on applicator equal or no line volt front panel measured be age measured between tween each of the above terminals Check input points Proceed to the voltage source and re next step store system to normal operation eg ISSUED 1 82 SUPERSEDES 8 74 LITHO U S A a Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 43 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued A3 Disconnect and lock out input electrical power to the applicator Input terminal block 1 and input terminals on main circuit breaker switch are electrically energized if external power is not disconnected even though the main circuit breaker switch 15 open A4 Close main circuit breaker switch on applicator and check continuity from input to output terminals on main circuit breakers Also check continuity between output wires on circuit breaker switch NORMAL INDICATION Continuity ABNORMAL INDICATION between input and output wires Open circuit between Open circuit or high resistance input and output wires between breakers Proceed to or short circuit be the next step tween breakers
41. 3 0 6 0 9 1 2 1 5 1 8 2 4 10 ft 3 1 m Assembly w Sensor Model VII 1 ft 0 3 m Insulation Hose to Gun Insulation Hose to Hose Cable Connector Male Hose Part No 846 846 846 846 846 846 846 846 240 ISSUED 7 84 LITHO TiS A 012 024 036 048 060 072 096 120 665 COLD RESISTANCE Hose Length ft 0 3 0 6 0 9 1 2 1 5 1 8 2 4 3 1 0 3 k OO G Q gt UC N F gt SUPERSEDES 12 82 Publication No 108 036A 0 061 0 121 0 181 0 242 0 303 0 364 0 485 0 485 0 061 ohms to to to to to to to to to 0 053 0 107 0 161 0 214 0 267 0 321 0 427 0 427 0 053 Req d Ref Ref Ref Ref Ref Ref Ref Ref Ref P oe Cold Resistance NORDSON CORPORATION 1984 All Riohts Reserved Packaging and Assembly Division Atianta Georgia TECHNICAL PUBLICATION 45 3 19 20 REPLACEMENT PART NUMBERS Old Hose Hose Length New Hose Part No ft Part No 271 817 1 0 3 846 012 271 818 2 0 6 846 024 271 819 3 0 9 846 036 271 820 4 1 2 846 048 271 821 5 1 5 846 060 271 822 6 1 8 846 072 271 823 8 2 4 846 096 271 824 10 3 1 846 120 271 827 1 0 3 240 665 SUPERSEDES Sage me LITHO U S A Publication No 108 036A Miscellaneous Technical Data Hot Melt NORDSON CORPORATION e AMHERST OHIO e USA Nordson Corporation welcomes requests for information comments and inquiries about its products Address all
42. 6 TROUBLESHOOTING CHART ELECTRICAL Continued NORMAL INDICATION Continuity ABNORMAL INDICATION Proceed to the next step Open circuit Replace control relay Restore system to normal opera tion Al4 Remove wire No 8 or wire No 9 from control relay and measure resistance of tank heaters between the wires NORMAL INDICATION Parallel con ABNORMAL INDICATION nected heaters 20 2 to 22 9 Parallel connected ohms Series connected heaters heaters open circuit 83 0 to 91 6 ohms Reconnect or 41 5 to 45 8 ohms wires and restore system to Series connected heat normal operation ers open circuit Proceed to the next step 15 Remove electrical control cabinet panels tank panels and components necessary to expose heater terminals on the tank wall Al6 Disconnect jumper s on heater terminals and measure resistance between wire No 8 and the terminal next to it Also measure resistance between wire No 9 and the terminal next to it NORMAL INDICATION 41 5 to 45 8 ABNORMAL INDICATION ohms Tank heaters are good Open circuit Replace Proceed to the next step tank and restore system to normal operation 17 Check continuity of wire No 8 from end to end wire No 9 from end to end and each of the jumpers wire No 34 from end to end NORMAL INDICATION Continuity ABNORMAL INDICATION Reconnect wire to tank and to Open circuit Replace control relay Restore system defective wire Re to normal operation
43. 72 41 7 76 41 7 80 41 7 81 41 7 82 41 7 83 41 7 84 41 7 92 NORDSON CORPORATION 1982 Rights Reserved Packaging and Assembly Division 41 7 04 Atlanta Georgia TECHNICAL PUBLICATION Figure 21 22 23 24 25 26 27 Table 10 11 ISSUED 1 82 LIST OF ILLUSTRATIONS Continued HM VII Piston Pump w Packings 4 Way Air Control Valve HM VII Tank Assembly Filter Assembly Circulation Valve Assembly HM VII Drain Ball Valve Tank Drain Ball Valve LIST OF TABLES Feature Variation Summary HM VII Hose Part Number and Resistance Cross Reference Chart Mechanical Summary i 5 Troubleshooting Chart Mechanical Troubleshooting Chart Electrical Summary Troubleshooting Chart Electrical Definition of Electrical Symbols Applicator Description Model VII Service Parts List Optional Filter Screens Recommended Spare Parts List SUPERSEDES 11 72 Page 41 7 95 41 7 98 41 7 99 41 7 102 41 7 103 41 7 104 41 7 105 Page 41 7 5 41 7 11 41 7 30 41 7 32 41 7 40 41 7 42 41 7 73 41 7 77 41 7 77 41 7 101 41 7 106 LITHO U S A Division Nordson Atlanta Georgia TECHNICAL PUBLICATION 0 1 1 SAFETY SUMMARY INTRODUCTION Here you will find safety guidelines for the use of Nordson equipment These guidelines apply to anyone working with Nordson equipment including operations and service personnel They are repeated throughout this m
44. 82 SUPERSEDES 2 81 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 13 NOTE To change the applicator from three phase to single phase operation disconnect wire No 3 from 1 3 L3 and reconnect to 1 1 Route a single phase service line to the cabinet and connect to 1 1 and 1 2 Cover the words 3 Phase on the information access door with a permanent label stating Single Phase 3 Connect the applicator to a reliable earth ground If more than one Model VII system is being installed in the same location refer to Multiple Unit Installa tion Failure to properly connect multiple units to the same power source will create dangerous potentials between units 4 Install the perforated end panel and secure with two 1 4 turn screws B Energize external electrical power and close the main cir cuit breaker or main switch on 460 VAC applicator and the hose circuit breaker NOTE POWER ON and TANK heater lights should come on when the main circuit breaker is closed 6 Take an amperage reading on the hoses NOTE In most applications amperage will be between 24 and 30 amps If the amperage reading is between 24 and 30 amps electrical installation is complete If the amperage is below 24 amps above 30 amps or the circuit breaker trips when power is initiated proceed to the appropriate following section for corrective action Amperage Less than 24 amps 15 Discon
45. 933 130 Terminal Board 12 Station CB2 937 131 Circuit Breaker 35 amps J 933 128 Jumper Terminal Board RC 939 214 Receptacle Connector geg eg 41 7aIssued 8 90 4 Corporation 1990 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 75 SECTION VI ILLUSTRATED PARTS LIST INTRODUCTION The Illustrated Parts List details and illustrates the assem blies and components of the Model VII hot melt applicator described in Section I of this manual For ease of under standing Figure 15 is provided as a composite of Figures 16 through 19 to show relative position COLUMN IDENTIFICATION FIGURE ITEM COLUMN The Figure Item column indicates the callout number for the part in the associated figure A dash in this column denotes that no callout has been made for the part PART NUMBER COLUMN The Part Number column indicates the Nordson part number for the physical part or assembly A dash in this column indicates a nonsaleable part or a nonsaleable subassembly of a saleable assembly DESCRIPTION COLUMN The Description column presents a written description of the part or assembly Nomenclature dimensional information and material information appear in this column REQUIRED COLUMN The Required column specifies the quantity of the part required per unit or assembly A dash in this column indicates that no specific quantity is required The term Ref in this column indicates the part o
46. AL INDICATION Adequate Normal Indication Con amount of adhesive being tact adhesive represen applied to substrate tative for a compatible adhesive Abnormal Indication In sufficient adhesive Use one or more of the following steps to in crease adhesive flow 1 Use higher flow rated nozzle 2 Increase tempera ture slightly 3 Increase appli cator air pressure ISSUED 9 81 SUPERSEDES x CORPORATION m Rights Reserved d Packaging and Assembly Division EE 40 0 18 AU C TECHNICAL PUBLICATION HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION 4 Change adhesive to another compatible adhesive with lower viscosity ADHESIVE STRINGING Fl Check gun position rela tive to substrate in ac cordance with 43 1 NORMAL INDICATION Pro Normal Indication Pro per height above sub ceed to step F2 strate Adnormal Indication too far from substrate Move closer to substrate F2 Check adhesive temperature and viscosity NORMAL INDICATION Ad Normal Indication Pro hesive temperature and ceed to step viscosity within normal limits Abnormal Indication Cold adhesive too viscous Increase adhesive temperature slightly Use lower viscosity adhesive Check adhesive shelf life NORMAL INDICATION Ad Normal Indication Pro hesive shelf life recom ceed to step F4 mended by adhesive manu facturer
47. CATION 41 7 39 TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued NORMAL INDICATION Valve is free of char and foreign material No physical dam age is apparent Reinstall valve and proceed to next step ABNORMAL INDICATION Valve is fouled with char or foreign ma terial and is damaged Replace damaged parts and clean valve store system to normal C6 Remove piston pump assembly from applicator and disassemble hydraulic cylinder Check for char or foreign material holding pressure ball off its seat damage NORMAL INDICATION char or foreign particles in cylinder no physical dam age Disassemble air cyl inder and check for damage Repair as necessary Re store system to normal operation Also check for physical ABNORMAL INDICATION Clean hydraulic cyl inder to remove char and foreign particles Replace damaged parts Restore system to nor mal operation PUMP STROKES RAPIDLY ON UP STROKE ONLY WAX PUMP ONLY D1 Disassemble hydraulic pump and check hydraulic plunger packing Replace as necessary MOLTEN MATERIAL PUDDLES AROUND PUMP MOUNT WAX PUMP ONLY El Disassemble hydraulic pump and check for failed piston packing Replace as necessary ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 19382 Rights Reserved Packaging and Assembly Division 41 7 40 Atlanta Georgia TECHNICAL PUBLICATION TABLE 5 TROUBLESHOOTING CHART ELECTRICAL SUMMARY Fault C
48. CHNICAL PUBLICATION USAGE Continued To clean parts exposed to hot melt nozzles and filters soak the parts in heated solvent at a t mperature somewhat above the normal adhesive application temperature but less than 475 F 245 C When cleaning the AD 24 drop in cartridge with Type R solvent do not submerge the entire cartridge in the solvent Be certain the pneumatic section top of the cartridge is not inserted in the molten solvent The mixture of Type R solvent and molten adhesive will cause the pneumatic section to sieze If a question concerning the compatibility of Type R solvent anda specific adhesive arises consult the adhesive supplier or use the following test J Heat the mixture slightly above the application temperature 2 Note changes in the mixture a Discoloration b Increase in viscosity Qu Gelling d Separation of any ingredients in the mixture e Sharp drop in viscosity Do not use Type R solvent when flushing equipment using Polyamide Surlyn Polyester or certain other hiqh performance hot melt materials gelled contaminant may form which will cause nozzle plugging and charring in the various heated components Before using a cleanout material other than Nordson R solvent check to be sure the material meets these specifications Non toxic and non sensitizing 2 Does not produce toxic vapors when heated Em Flash point at least 50 F 28 C a
49. CONTROLLER REPLACEMENT The Model VII hose temperature controller is not designed for field repair or recalibration Malfunction of the controller requires replacement of the entire temperature controller Use the following procedure to replace the hose temperature con troller 1 Open the applicator main circuit breaker switch 2 Open the front hinged panel electrical cabinet d Grasp the hose temperature controller and pull straight outward 4 Plug in a new controller and press firmly until the controller seats against the control cabinet socket 5 Close applicator main circuit breaker switch restore system to normal operation ISSUED 1 82 SUPERSEDES LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 67 SECTION V DIAGRAMS AND TABLES HOSE HEATER GUN HEATER INPUT 2 TANK HEATER LIST 230 VAC 3 POWER CIRCUIT HOSE HEATER VAC Dn MAR GUN HEATER 30A x d Ee 2 TANK HEATER L208 erem E 230 VAC 10 POWER CIRCUIT poe F h 115 VAC iom P1 WHITE ee 115 VOLT CONTROL CIRCUIT 149 iC 240 682 Figure 8 230 VAC Electrical Schematic VII Applicator ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division Atlanta Georgia 41 7 68 INPUT 460 VO
50. Divisi Atlanta Georgia PUBLICATION 40 0 15 HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION Abnormal Indication Ad hesive level low Keep tank full B4 Hot melt adhesive may be oxidizing in tank NORMAL INDICATION No Normal Indication None oxidation in tank adhesive Abnormal Indication Hot melt adhesive oxidizing in tank Keep tank lid closed extreme cases change adhesive or use nitrogen gas blanket applicator ADHESIVE FUMING OR SMOKING Cl Check tank temperature setting NORMAL INDICATION Proper Normal Indication Pro tank temperature setting ceed to step C2 Abnormal Indication Tank temperature too high Reduce temperature C2 Adhesive may be unstable chars easily NORMAL INDICATION Normal Indication None char Abnormal Indication Un Stable adhesive Use one or more of the following steps to reduce charring l Keep tank lid closed 2 Use a more stable adhesive 3 Use nitrogen gas blanket applicator ISSUED 9 81 SUPERSEDES Ne e EE 1981 Oh Packagi dA bly Divisi 40 0 16 Atlanta Georgia TECHNICAL PUBLICATION HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION ADHESIVE JELLING 21 Check temperature settings of applicator and hose NORMAL INDICATION Normal Indication Pro Temperature settings ceed to step D2 in proper positions Abnormal Indication
51. Hose temperature control relay E4 contacts welded shut ISSUED 1 82 SUPERSEDES 2 77 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 42 Atlanta Georgia TECHNICAL PUBLICATION TABLE 6 TROUBLESHOOTING CHART ELECTRICAL If possible a starting condition should be established to en able determination of a fault condition The applicator should be at normal operating temperature with the main circuit break er switch and hose circuit breaker closed Air pressure to the air motor and gun should be at normal settings The Model VII hot melt applicator and associated hoses and guns contain energized electrical components with potentials that could be fatal Disconnect and lock out input electrical power to the applicator before removing any panels or attempting to perform mainte nance on this equipment Review the Safety Summary Section 40 1 before at tempting to perform maintenance on this equipment The Safety Summary is duplicated in the front of this manual TANK FAILS TO HEAT OR UNDERHEATS Al the main circuit breaker switch on the applicator Remove each of the main power fuses and the control power fuse Check for continuity NORMAL INDICATION Continuity ABNORMAL INDICATION Reinstall fuses and restore Open circuit Re input power to applicator place defective fuse Proceed to the next step Reinstall fuses and restore system to normal operation A
52. Hot Melt Applicator Model Part 104 385C NORDSON CORPORATION e AMHERST OHIO e USA Nordson Corporation welcomes requests for information comments and inquiries about its products Address all correspondence to Nordson Corporation 11475 Lakefield Drive Duluth GA 30155 1511 Notice This is a Nordson Corporation publication which is protected by copyright Original copyright date 1990 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 AquaGuard Blue Box Control Coat Equi Bead FloMelt FoamMelt FoamMix Helix Hot Shot Hot Stitch Meltex MicroSet MultiScan Nordson the Nordson logo OmniScan Porous Coat Posi Stop RBX Sure Bond UniScan UpTime and Versa Spray are registered trademarks of Nordson Corporation BetterBook5M CF Controlled Fiberization Easy Screen Fibermelt Flo Tracker PrintGuard and Package of Values are trademarks of Nordson Corporation P N 104 385C 41 7 1996 Nordson Corporation Issued 1 96 All rights reserved SERVICES PROVIDED NORDSON CUSTOMERS Customer Support Before And After The Sale For more than 35 years Nordson has offered unparalleled service to its customers before during and after the sale Nordson representatives will work with you to choose the best system for your applica
53. I See Service 1 Parts List 63 270 181 Panel Inside Tank 1 Panel Inside 1 ISSUED 1 82 SUPERSEDES LITHO U S A PARTS LIST Continued Item No Part No Description Req d 270 184 Insulation Inside 1 985 101 Rivet Pop 2 Insulation Terminal 1 981 856 Nut 1 4 Turn 2 981 855 Receptacle 1 4 Turn 2 64 270 185 Panel Inside Control 1 Panel Inside 1 933 074 Block Terminal 8 Station 1 933 075 Marker Insulation 8 Station 1 981 060 Screw Pan Head 8 32 x 2 0 50 in 981 856 Nut 1 4 Turn l 881 855 Receptacle 1 4 Turn 1 65 270 188 Harness Main Wiring 1 931 072 Wire 14 GA White w Orange 2 6 ft 931 084 Tubing Fiberglass 1 2 tt 931 131 wire 18 GA Green 3 6 ft 931 132 wire 18 GA Black 9 8 ft 931 133 wire 10 GA Natural w Brown 8 6 ft Marker Wire 933 006 Terminal Ring Tongue 4 933 054 Terminal Ring Tongue 4 933 071 Terminal Ring Tongue 7 933 129 Terminal Ring Tongue 3 933 283 Terminal Ring Tongue 1 Socket Electrical Connector 3 939 110 Strap Cable 5 66 240 594 Support Front Cabinet 1 67 900 769 Fitting Wire Molded End 2 68 136 139 Conduit Base 1 69 983 011 washer No 8 2 70 Tag Los Angeles Approved l Not Applicable to 200 VAC Unit 244 404 Pump Air Operated w Enclosure 1 270 119
54. ICAL PUBLICATION Q Heating an empty hose for longer than 15 minutes can cause internal damage to the hose This can cause it to rupture when hydraulic pressure is applied Close the circulation valve by turning full clockwise 2 circulation valve should turn easily Do not attempt to turn the valve with solidified hot melt adhesive in the system Never use tools to turn the valve Any such action can cause damage to the tungsten carbide stem and seat When the tank and hoses reach application temperature open the filter drain and circulation valve drain Slowly increase input air pressure to the pump until the pump starts to stroke once every two seconds Trapped air in the applicator hoses and guns may cause spitting of air and molten adhesive as the system fills Shield the area and personnel from splashed adhesive material Allow material to flow from both drains until the streams flow free of air and contaminants Close filter drain and circulation valve drain Remove gun nozzle and trigger gun into a waste container until the adhesive flows free of air and contaminants Reinstall nozzle Set pressure regulator on pump to zero pressure Crack open filter drain and circulation valve drain to re lieve trapped hydraulic pressure in the system Remove and clean filter assembly in accordance with Section IV Filter Cleaning Reinstall filter assembly Close filter drain and circulation valve drain
55. LTS 60 47 39 INPUT 460 VOLTS 60 HZ 1f Hir o EE Opn 2 460 3 TR MEL 460 VAC 19 POWER CIRCUIT P2 AMBER 95 SE x gt CH o TE 115 VOLT CONTROL CIRCUIT TECHNICAL PUBLICATION um TR HOSE HEATER 115 VAC EAE P D Aa Her f 9 GUN HEATER Figure 9 460 VAC Electrical Schematic VII Applicator ISSUED 1 82 SUPERSEDES LITHO U S A Packaging Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 69 2 PUN HERTE AA TANK HEATE INPUT TANK HEATER 200 VAC if POWER CIRCUIT x 60 WHITE WEE i uad me AMBREN SV CRH FS ee IC 2 31 SEN Luz loooo L7 8 1 24 re 115 VOLT CONTROL CIRCUIT 149 12 Figure 10 200 VAC Electrical Schematic HM VII Applicator ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved 41 7 70 A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION s e e a gt Ga SC lt X c ay dE 7 fs gt lt br e c 2 af gt E RECTFTACLE COME TOR WLW LUSK as LOONT PANT 4 5 6 15 21 72 1 CONTAC TOR PANEL ASSEMBLY
56. Model VII hot melt applicator and associated hoses and guns contain energized electrical com ponents with potentials that could be fatal Dis connect and lock out input electrical power before opening any panels or attempting any maintenance on this equipment Disconnect and lock out input electrical power to the ap plicator Remove electrical cabinet top cover and tank front panel Remove three screws and lockwashers on tank sensor cover plate Open front hinged panel on electrical cabinet and pull knob off tank temperature control Remove two screws on controller front Lift temperature controller out of electrical cabinet Route sensor bulb through tank inner panel wall Route new controller sensor bulb through tank inner panel wall to tank Exercise care not to pinch or kink sensor bulb or Q tubing pinched or kinked sensor tube or bulb will result in erroneous temperature control or complete failure of the temperature controller Position new temperature controller behind front panel and secure with two screws Position sensor bulb in tank groove and secure with cover plate and three screws and lockwashers Push knob onto temperature controller Reinstall tank front panel and electrical cabinet cover Restore system to normal operation SUPERSEDES 1 82 Q NORDSON CORPORATION 1982 Rights Reserved Packaging and Assembly Division 41 7 66 Atlanta Georgia TECHNICAL PUBLICATION HOSE TEMPERATURE
57. Over heating Drain and flush system in accordance with applicator service manual Reduce temperature D2 Check compatibility by mixing adhesives i separate container NORMAL INDICATION Com Normal Indication Pro patible mixture ceed to step D3 Abnormal Indication In compatible mixing Drain and flush system in accor dance with applicator ser vice manual D3 Adhesive may be unstable Use a more stable adhesive ADHESIVE NOT PENETRATING SUBSTRATE El Check adhesive tempera ture NORMAL INDICATION Ad Normal Indication Pro hesive temperature within ceed to step E2 normal limits Abnormal Indication Low adhesive temperature Increase temperature slightly ISSUED 9 81 SUPERSEDES LITHO U S A Packagi dA bly Divisi Atlante Georgia TECHNICAL PUBLICATION 40 0 17 HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION E2 Check substrate surface NORMAL INDICATION No Normal Indication Check coating on substrate with adhesive represen tative for a compatible adhesive Abnormal Indication Coated substrate In crease slight ly If adhesive still does not penetrate check with adhesive representa tive for compatible ad hesive NOTE Flush and drain system in accordance with applicator service manual before changing adhesive E3 Check to see that adequate amount of adhesive is being applied to substrate NORM
58. PAIR The Model VII hot melt applicators and associated hoses and guns contain energized electrical components with potentials that could be fatal Disconnect and lock out input electrical power to the applicator before removing any panels or attempting to perform any main tenance procedures Do not attempt to loosen any part of manifold hoses or guns until air to the applicator has been turned off and hydraulic pressure in the system has been re lieved Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive material and hot gun surfaces ISSUED 1 82 SUPERSEDES 10 72 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 56 Atlanta Georgia TECHNICAL PUBLICATION If the hydraulic pump is operable flush the system before dis assembly If the pump is not operable but the heating system is functional heat the applicator to operating temperature to ease disassembly Otherwise a flamelss electric heat gun or other flameless heating method must be used to heat solidified hot melt adhesive material on components Never heat any component with a torch or other open flame Use an electric oven with forced air circulation or a flameless electric heat gun to heat components AIR OPERATED PISTON PUMP DISASSEMBLY Air Motor Disassembly Figure 20 Ls Disconnect and lock out input electrical power to the
59. PUBLICATION 40 0 7 MINIMUM BEAD LENGTH CHART FOR HOT MELT APPLICATION Minimum Time for One Complete Gun Cycle 1 20 0 0 0 100 200 300 400 500 600 Web Speed Feet Minute 0 20 40 60 80 100 120 Web Speed Inches per Second NOTE One Gun Cycle One Beod One Gap 89000060 ASS Minimum Gun Cycle Length 2 Times the Minimum Length shown at Left Side of chart Curve 8 152 670 Nordson Automatic Gun with Pneumatic Operation Curve A DandE Specific information not available ISSUED 9 1 70 SUPERSEDES NORDSON CORPORATION 1986 LITHO U S A U S A All Rights Reserved 40 0 8 P amp A Division Atlanta Georgia TECHNICAL PUBLICATION MINIMUM BEAD LENGTH CHART FOR HOT MELT APPLICATION 6 0 G gt 5 Maximum Gun Spe Minimum Time for One i Complete Gun Cycle E s 4 10 0 gt 915 Ole JE Ld a c 2 2 2 NS _ ENS 40 80 22 120 160 200 280 Web Speed Centimeters Second NOTE One Gun Cycle One Bead One Gap One Cycle Minimum Gun Cycle Length 2 Times the Minimum Length shown at left side of chart Curve 152 670 Nordson Automatic Gun with Pneumatic Operation Curve D and E Specific information not available ISSUED
60. Q Le DIAGRAMS AND TABLES VI ILLUSTRATED PARTS LIST Introduction Column Identification ISSUED 1 82 SUPERSEDES 12 72 TECHNICAL PUBLICATION Page 41 7 26 41 7 28 41 7 30 41 7 30 41 7 32 41 7 40 41 7 42 41 7 55 41 7 56 41 7 59 41 7 61 41 7 65 41 7 66 41 7 67 41 7 75 41 7 75 41 7 75 LITHO U S A Packaging and Assembly Division Atlanta Georgia Figure 1 N W oO e 10 11 12 1 9 14 15 16 17 18 19 20 ISSUED 1 82 LIST OF ILLUSTRATIONS Model VII Hot Melt Applicator Model VII Dimensions Model VII System Schematic Transformer Schematic Adhesive Filter Assembly Scraper and Retaining Ring Removal Scraper and Retaining Ring Reassembly 230 VAC Electrical Schematic HM VII Applicator 460 VAC Electrical pene HM VII Applicator 200 VAC Electrical SEM HM VII Applicator 230 VAC Wiring VII Applicator 460 VAC Wiring Diagram HM VII Applicator 200 VAC Wiring pum HM VII Applicator Model VII Hot Melt Applicator Model VII Heating and Control Assembly Model VII Applicator Cover Section Model VII Applicator Electrical Cabinet Model VII Applicator Hydraulic Section Model VII Applicator Adhesive Output Section VII Piston Pump SUPERSEDES 11 72 TECHNICAL PUBLICATION 41 7 03 Page 41 7 1 41 7 2 41 7 3 41 7 12 41 7 27 41 7 58 41 7 60 41 7 67 41 7 68 41 7 69 41 7 70 41 7 71 41 7
61. RMAL INDICATION No connect input electrical power voltage Replace and reconnect wires to trans transformer and restore former Proceed to the next step system to normal opera tion A7 Open tank front panel and check heat limiter for con tinuity NOTE The heat limiter should open at 465 F 240 C and reset closed at 365 F 185 C NORMAL INDICATION Continuity ABNORMAL INDICATION with tank temperature below Open circuit with tank 365 F 185 C Proceed to temperature below 365 F the next step 185 C Replace heat limiter and restore system to normal opera tion 8 Check continuity of wire No 23 between 2 2 and TB3 3 Check continuity of wire No 26 between TB2 3 and 4 NORMAL INDICATION Continuity ABNORMAL INDICATION Proceed to the next step Open circuit or re sistance Replace defective wire Re store system to nor mal operation 9 Check continuity of tank temperature controller by necting ohmmeter between wire No 35 Normally Closed ISSUED 1 82 SUPERSEDES 8 75 LITHO U S A Packaging Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 45 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued contact and wire No 36 Common and rotating tank tempera ture control knob from maximum to minimum setting NORMAL INDICATION Continuity ABNORMAL INDICATION If until setting reaches actual continuity is lost at tank temperature then open a set
62. SSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 7 SECTION 11 PREPARATION FOR USE INTRODUCTION The Model VII hot melt applicators are shipped in a partially as sembled condition in the configuration specified on the Purchase Order Hoses and guns are shipped separately following para graphs detail information necessary for proper installation of the applicator hoses and guns UNPACKING No special instructions are necessary to unpack the Model VII ap plicator Normal care should be exercised not to damage the equipment during unpacking INSPECTION After unpacking the following inspection should be performed 1 Inspect surfaces for evidence of dents scratches corrosion and other physical damage 25 Remove the top left hand cover and inspect for loose electri cal connections and loose contaminants 34 Inspect hose for frayed or broken connectors rips in the outer braid and evidence of kinking or other physical damage 4 Inspect guns for loose mechanical and electrical connections Se Inspect all fasteners and mechanical connections for tight ness INSTALLATION GENERAL 1 Install the hot melt applicator so panels be removed and the unit is otherwise accessible for operation 2 gt Avoid unusual ambient temperature conditions i e below 30 F 0 or above 120 F 50 C 56 app
63. This includes electrical conduit insula tion of any type or tight metal covers With large areas of hoses in contact with a cold floor cold supports or other such surfaces Cold points along the hose restrict the flow of adhesive inside the hose and can create potential problems during operation If outdoors or in drafty areae with the applicator guns unshielded from the wind Rapid heat dissipation due to air movement across the guns may cause operational problems With handgun trigger left unlocked while the gun is unattended In addition SAFETY ISSUED LITHO U S A Use only the metal base when attempting to lift or move this equipment Do not use equipment covers doors panels or hose connectors as braces or grips Never use this equipment as a ladder or stepping stool Route all hoses so as to prevent damage from kinking abrasion and other physical damage Do not allow a hose to be installed with a bend radius of less than 6 inches 150 mm Never point an applicator handgun at yourself or anyone else DURING SERVICING Do not perform internal service or adjustment on any equip ment unless another person capable of rendering first aid and resuscitation is present Only qualified personnel should service Nordson equipment To avoid personal injury never touch exposed connections and components while power is ON Dangerous voltages exist at several points in the equipment Disconnect lock out and tag
64. UBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION DEPOSIT FROM NOZZLES UNEVEN IN MULTI GUN INSTALLATION Hl Check for clogged nozzles in accordance with gun service manual NORMAL INDICATION Ad hesive flows freely through nozzle H2 Check pressure drop across guns and nozzles NORMAL INDICATION Approx imately equal pressure drop across all guns ISSUED 9 81 SUPERSEDES Abnormal Indication In crease adhesive tempera ture slightly or use a lower viscosity adhesive material Normal Indication Pro ceed to step H2 Abnormal Indication Clogged nozzles Clean nozzles in accordance with gun service manual Normal Indication None Abnormal Indication Un equal pressure drop across guns Use one or more of the following steps to correct the problem l Increase applicator air pressure 2 Increase applicator temperature slightly 3 Flush and clean guns and nozzles 4 Use different flow rated nozzle or guns LITHO U S A d Packaging and Assembly Division Adanta Ganga TECHNICAL PUBLICATION 40 0 21 HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION 5 Use flow control valves in the lines GUN DROOLING Il Check gun needle and seat for wear and or char NORMAL INDICATION Gun Normal Indication Pro needle and seat clean ceed to step 12 with no indication of wear Abnormal Indication Clean and or replace wor
65. UED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 27 8 Using Figure 5 guide remove screw from filter bung B and disassemble filter vi Figure 5 Adhesive Filter Assembly The flash point of Type R solvent is 572 F 289 C Do not heat this material above 475 F 245 C See Section 59 1 for further details Do not heat Type R solvent with an open flame or in an unregulated heating device 1 a small pan on an unregulated hot plate A fire hazard may exist if an open flame or unregulated hot plate is used to heat Type R sol vent A controlled heating device 1 a small deep fat fryer or thermostatically controlled hot plate shall be used to heat the solvent above the melting temperature of the adhesive material 9 Several methods for cleaning a hot melt adhesive filter screen C may be used depending on the type of hot melt adhesive material used in the system as noted below a Place the filter in a container of Nordson Type R solvent and heat above the melting temperature of the adhesive Scrub the screen with a fine bristle brush Some solvents may not be compatible with the hot melt adhesive material Sludge formation can further com pound the problem Test the solvent with a small sam ple of adhesive before using the solvent in the system Do not use a metal brush to clean the filter screen Damage may re
66. Units Only 53 933 185 Cover Transformer Terminal Block 200 VAC Units Only 54 984 126 Nut Hex 12 24 4 55 Tag Warning Electrical Shock 1 56 240 670 Bracket Terminal 1 57 933 044 Terminal Block 4 Station 1 58 939 004 Cable Tie 2 59 933 046 Strip Marker 4 Station 2 60 939 045 Bushing Nylon 2 61 Wire Group 230 VAC Unit Only 1 931 072 Wire 14 GA White w Orange 1 2 ft 931 129 wire 10 Green w Yellow 2 8 931 149 Wire 18 Green w Yellow 1270 933 054 24 Terminal Ring Tongue 8 933 071 Terminal Ring Tongue 2 933 129 Terminal Ring Tongue 2 Marker Wire 61 Wire Group 460 VAC Unit Only 1 931 014 wire 18 GA Black 4 7 ft 931 072 Wire 14 GA White w Orange 0 7 931 129 wire 10 Green w Yellow 2 8 ft 931 149 wire 18 Green w Yellow dee Marker Wire 933 054 Terminal Ring Tongue 6 933 071 Terminal Ring Tongue 6 933 129 Terminal Ring Tongue 3 933 162 Terminal Pushon 4 61 Wire Group 200 VAC Unit Only 1 931 014 Wire 18 Black 4 7 ft 931 072 wire 14 GA White w Orange 0 7 ft 931 129 ee wire 10 GA Green w Yellow 2 8 ft 931 149 wire 18 GA Green w Yellow l0 Marker Wire 933 054 Terminal Ring Tongue 4 933 071 Terminal Ring Tongue 6 933 129 Terminal Ring Tongue 6 933 162 Terminal Pushon 4 62 Base VI
67. Valve Circulation Manifold Filter Ball and Seat Pressure Ball and Seat Siphon Body Hydraulic Pump Kit Seal HM VII Pump Use with 240 828 Air Valve Cup Piston Air Motor Gasket Valve Washer Seat Poppet Poppet O ring Viton 0 38 x 0 50 in O ring Viton 0 50 x 0 62 in O ring Viton 3 25 x 0 38 in Cup U Viton Ring Backup Single 0 50 x 0 62 in it Seal Heating and Control HM VII Sleeve Sealing Sleeve Support O ring Viton 0 50 x 0 62 in O ring Viton 0 62 x 0 75 in O ring Viton 0 81 x 0 94 in Ring Backup Single 0 50 x 0 62 in Kit Detent Detent Pin Detent Spacer Screw Fillister Head 8 32 x 1 25 in Kit Grounding Screw Tag Ground Screw Pan Head 10 32 x 1 00 in Washer Flat 0 21 x 0 41 Lockwasher Split No 10 Nut Hex 10 32 Tag Warning Tag Warning Kit Circuit Breaker Handle Tie Pin Breaker Handle Spacer Breaker Handle Ring Retaining External 0 12 in e o e ez 9999990909 SUPERSEDES Qty PRR REE RP eee NN P gt Q Q P P n Q P P P N FS SS EQ i N LITHO USA a Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 79 TABLE 9 MODEL VII SERVICE PARTS LIST Continued Part No Description Oty 241 766 Stem w Guide 1 241 491 Kit Circulation Valve and Filter 1 940 191 O Ring Viton 0 81 x 0 94 in 2 984 020 Ring Backup Single 0
68. Where Used Fitting Fitting str Conn Gun to Automatic Hose Applicator 972 051 972 628 to Automatic or Handgun Hose Pipe Plug Extra Ports on Gun or Applicator 973 411 973 574 90 Elbow Gun to Automatic Hose 972 200 274 180 90 Elbow Applicator to Automatic or 972 200 972 646 Handgun Hose 459 Elbow Gun to Automatic Hose 972 618 274 179 45 Elbow Applicator to Automatic or 972 618 972 647 Handgun Hose Str Conn FM150 170 to Hose 310 281 For instructions on installation of o ring elbow fittings see page 46 33 1 Note 972 646 and 972 647 have an extended collar which allows them to be wrenched into the hose ports in the manifold An adapter which will allow guns designed for o ring fittings to be attached to a standard 1 4 inch tapered pipe thread fitting is avail able from Specials P N 806 724 Primarily it is used in existing installations It may need to be insulated to prevent excessive heat loss 40 2m Issued 5 87 0 Corporation 1987 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 1 SECTION I EQUIPMENT FAMILIARIZATION INTRODUCTION The Model VII Circulating Hot Melt Applicator as shown in Figure 1 melts solid hot melt adhesive or other thermoplastic materials and continuously circulates the molten fluid under hydraulic pres sure through electrically heated hoses and guns back to the appli cator tank Molten adhesive material i
69. alve body 4 Holding the spool valve 9 with an adjustable wrench un screw the shifter link to free the lower poppet 5 Inspect the poppets and poppet seats Replace necessary NOTE If the poppet seat washer is worn and needs to be replaced replace the entire poppet seat assembly Valve Shifter Disassembly T Remove two screws to disconnect valve shifter from pump mount 2 Remove two screws and washers to disconnect control arm bracket from control arm Push the control arm away from bracket to relieve spring pressure 3 Slide out of bracket to remove spring NOTE Pin stops against a shoulder on the outside wall of the control arm bracket Slide the pin out the hole on the inside wall of bracket 4 When reassembling valve shifter ensure spring loops bottomed in pin sleeve grooves AIR OPERATED PISTON PUMP REASSEMBLY Figure 20 1 Insert scraper 16 with flat surface away from body into the alr motor end of pump body 20 The scraper ring may be damaged if all hot melt adhe Y sive material is not removed from scraper cavity and retaining ring groove in the pump body 2 Install the scraper retaining ring into the pump mount using Figure 7 and the following instructions ISSUED 1 82 SUPERSEDES 6 78 C NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 60 Atlanta Georgia TECHNICAL PUBLICATION a Separate the coils of retaining ring and insert
70. ank Foreign particles may lodge in the pump causing premature failure or improper operation ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 21A DAILY START UP Turn the applicator Allow the adhesive in the tank to melt 2 Adjust the air pressure to the pump to the desired setting DAILY SHUTDOWN Shut the applicator main switch off 2 Reduce pump air pressure to zero SAFETY PRECAUTIONS 1 Do not touch the hot melt guns when in use They hot 2 Reduce pump air pressure to zero and relieve hydraulic pressure by triggering the gun before removing the adhe sive filter opening filter drain or removing a nozzle 34 Disconnect and lock out the applicator main switch before opening the electrical enclosure OPERATION Set the tank and hose temperature controller and air to the adjustments suggested by Nordson personnel and or adhesive representative Tank Temperature oF Hose Temperature F Pump Air Pressure psig Gun Air Pressure psig REMOVE THIS PAGE FROM THE SERVICE MANUAL HANG IT NEAR YOUR APPLICATOR FOR REFERENCE ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 Rights Reserved A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 23 SECTION IV MAINTENANCE INTRODUCTION Both preventive maintenance and corrective maintenance procedures are presented in the
71. anual along with specific warnings and cautions not included in this section These safety guidelines cover s Installation Equipment operation Working with hot melt materials Use of hot melt solvents Failure to follow these recommendations may result in personal injury from burns or electrocution and or equipment and property damage EXPLANATION OF TERMS AND SYMBOLS The following symbols are used in Nordson publications to alert the reader to potential physical harm or equipment damage WARNING CAUTION Fallure to observe may cause Failure to observe can cause DEATH or PERSONAL INJURY DAMAGE TO EQUIPMENT General General Electrical Nozzle Pressure Figure 1 Nordson Corporation Safety Symbols ISSUED 7 86 SUPERSEDES 2 85 NORDSON CORPORATION 1986 SE All Rights Reserved P amp A Division 40 1 2 Atlanta Georgia TECHNICAL PUBLICATION SAFETY DURING INSTALLATION 7 ELECTRICAL protective electrical ground connection to a reliable earth ground is essential for safe operation Without one all accessible conductive components including knobs and controls that appear insulated can render an electric shock s disconnect switch with lockout capability must be provided between the power source and the equipment The power supply wire gauge and insulation must be sufficient to meet the temperature and power requirements Only fuses of the correct type
72. aterial or hot gun surfaces Use the following procedure to clean gun nozzles 1 zs 8 Heat the gun to operating temperature Reduce pump air pressure to zero at the regulator Trigger all guns to relieve trapped hydraulic pressure in the system Open the filter drain and circulation valve drain Reduce gun air pressure to zero at the regulator mechanical connections could result in serious burns when the nozzle is removed Failure to relieve system pressure before breaking any Remove the nozzle Place the nozzle in a container of Type R solvent and heat the solvent to the melting temperature of the adhesive ma terial being used 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 Q Some solvents may not be compatible with the hot melt adhesive material Sludge formation can further com pound the problem Test the solvent with a small sam ple of adhesive before using the solvent in the system Clean the nozzle with a pin type probe inserted into the nozzle in a direction opposite to the flow of material ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 26 Atlanta Georgia TECHNICAL PUBLICATION NOTE See Section 43 2 for specific information on Nordson nozzle cleaning kits O Do not use an open torch drill or broach to clean a nozz
73. bove intended use temperature 4 Non corrosive Refer to the specific Nordson applicator service manual for additional information regarding the use of Type R solvent Description 270 755 Solvent Type 1 Gallon 3 8 Liters 270 756 Solvent Type R 5 Gallon 18 9 Liters 270 757 Solvent 55 Gallon 208 2 Liters ISSUED 3 81 SUPERSEDES 12 76 LITHO U S A Publication No 104 708A CORPORATION Amherst Ohio 44001 TECHNICAL PUBLICATION 59 3 1 ISSUED 11 80 SUPERSEDES 11 70 VOLTAGE AND FREQUENCY RATING Proper input voltage to an electrical product is important Excessively high voltage can cause failure of the product and excessively low voltage is likely to result in poor performance Nominal voltage of electric power varies from one utility system to another and the voltage on any one system can vary by as much as 10 per cent from the nominal value being low during peak load periods and high during light loads such as lunch time Nordson products are designed to operate satisfactorily on the following voltage ranges Range Nameplate Rating 115 to 125 120 230 to 250 240 365 to 395 380 460 to 500 480 Products sold in Europe must be designed to operate on 220 Volts rather than 240 Volts because of European standards Thus all Nordson products sold in Europe are designed to operate anywhere in the range of 220 to 250 volts A nameplate rating of 230 volts automatically implies S
74. cal Trouble shooting Chart if set tings are correct ISSUED 1 82 SUPERSEDES 3 73 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 33 TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued A2 Reduce air pressure to the pump to zero crack open circu lation valve drain and then increase air pressure to pump Check for adhesive flow NORMAL INDICATION Air motor ABNORMAL INDICATION If starts to stroke when valve air motor does not is opened Blockage is in stroke when valve is the circulation valve Re opened blockage is up move and rebuild circulation stream of the valve valve Restore system to Proceed to the next normal operation step A3 Reduce air pressure to the pump to zero close circulation valve drain open filter drain and then increase air pres Sure to the pump Check for adhesive flow from drain NORMAL INDICATION Air motor ABNORMAL INDICATION If starts to stroke when valve the air motor does not is opened Blockage is down stroke when valve is stream of the filter Close opened blockage is up filter drain and reduce air stream of the drain pressure to the pump to zero Close filter drain and Proceed to the next step reduce pump air pres sure to zero Proceed to step A5 A4 Check for cold components and joints in hydraulic system NORMAL INDICATION 11 com ABNORMAL INDICATION If ponents and joints in a cold joint is identi hydraulic system
75. circulation valve that adjusts the amount of material flowing back to the tank when the gun is not being triggered or triggered at a slow rate This feature accomplishes two things First it allows internal circulation of material through the system necessary to prevent the pump from stalling or the relief valve from opening when the guns are not being triggered Second it improves performance in both continuous and interrupted bead applications by reducing pressure fluctuations and related changes in deposition rate as guns are cycled FEATURE VARIATIONS The following paragraphs describe the variations in configuration available with the Model VII hot melt applicator Table 1 pre sents a summary of Nordson part numbers and feature variations of the Model VII MODEL VII HOT MELT APPLICATOR 460 VAC INPUT The 460 VAC Model VII hot melt applicator is the same as the basic 230 VAC Model VII unit except for the front control panel and the electrical control system Interlocked circuit breakers have been replaced in the 460 VAC Model VII with a main switch and fuses Additionally the tank heaters are wired in series instead of in parallel as in the 230 VAC Model VII to maintain the same heater watt density MODEL VII HOT MELT APPLICATOR 200 VAC INPUT The Model VII J hot melt applicator is the same as the basic 230 VAC Model VII unit except for the addition of a multi tap input transformer that permits applicator use in areas where
76. ckaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION Pull pressure ball assembly and hydraulic plunger away from pump body Unscrew pressure ball seat from hydraulic plunger Refer to Figure 6 and the following instructions to remove hydraulic scraper retaining ring 17 from pump body 11 12 13 Figure 6 Scraper and Retaining Ring Removal a Pry end of retaining ring out of ring groove with a small screwdriver or other pointed tool b Work retaining ring out of ring groove until it can be grasped with needle nose pliers Cx Spiral retaining ring out of pump body NOTE Retaining ring may be damaged during removal Re place with a new retaining ring during reassembly Heat the pump body around the hydraulic scraper to soften hot melt adhesive material Remove the scraper 16 from pump body Clean all components of the hydraulic section in a con tainer of Type R solvent heated to the melting temperature of the adhesive material Wipe components with a dry cloth Air Control Valve Diassembly Figure 22 Remove four screws 5 holding each poppet seat 4 to the control valve body 10 This frees the detent 3 and spacers 2 ISSUED 3 82 SUPERSEDES 1 82 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 59 a Hold the shifter link 6 and unscrew the detent pin 7 to free the upper poppet SS Pull the shifter link out of the v
77. compatibility with the adhesive used in the system When the material is molten close the circulation valve Increase pump air pressure to 20 psi 140 kPa Open circulation valve drain and filter drain Allow ma terial to flow out the drains until it is clean and free of contaminants Close drain valves and open circulation valve full counter clockwise Allow material to circulate through the system for 15 minutes Close circulation valve and open filter drain and circu lation valve drain Drain system Reduce pump air pressure to zero at the regulator as draining is complete Remove and clean adhesive filter in accordance with Section IV Filter Assembly Cleaning Reinstall filter assembly and close drain valves Restart the system in accordance with Section III Setup and Initial Operation eliminate contamination of the adhesive by solvent that may remain in the system melt adhesive in the tank and pump through the hoses and guns to the circu lation valve drain until all the solvent is removed from the system Solvent mixed wth adhesive can cause bond failure or odor contamination of packaged food products ISSUED 1 82 SUPERSEDES 4 72 NCRDSON CORPGRATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 30 Atlanta Georgia TECHNICAL PUBLICATION CORRECTIVE MAINTENANCE Obvious causes of malfunction such as broken wires and missing fasteners are generally not considered as
78. d 8 90e Nordson Corporation 1990 Packaging Assembly Division Atlante Georgia TECHNICAL PUBLICATION 41 7 105 e 12 Arr e cid NM Ge gt 2 ASESS 11 10 9 7 Figure 27 Tank Drain Ball Valve PARTS LIST Item No Part No Description Req d 240 703 Valve Ball Tank Drain HM VII Ref 1 750 050 Screw Cross 1 2 750 113 Handle 1 3 750 045 Nut Stem Gland 1 4 750 041 Housing Valve 1 5 750 111 Fitting Elbow 1 6 600 174 Plate Warning 2 7 750 059 Seat Ball 2 8 750 135 Ball 1 9 Seal Body 1 10 750 056 Cap Body 1 11 973 067 Nipple Pipe 3 8 NPTF x 2 00 in 1 12 750 047 Washer Thrust 1 13 750 046 Packing Stem 1 14 750 048 Spring Flat 1 15 750 044 stem 1 ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 106 Atlanta Georgia TECHNICAL PUBLICATION TABLE 11 RECOMMENDED SPARE PARTS LIST Part No Description Qty PUMP ASSEMBLY 244 244 Valve 4 Way Air Control 1 240 354 Shifter Valve 1 986 711 Ring Retaining 2 240 535 Scraper Hydraulic 244 405 Pump Only 1 244 453 Body Gland w Packings 270 116 Pump Only 1 940 223 O ring Viton 1 00 x 1 12 in 270 116 2 Pump Only 244 451 Seal Packing Plunger 270 116 Pump Only 1 240 839 Ball and Seat Siphon 1 240 838 Ball and Seat Pressure 1 270 040 Seal Kit Pump 1 TANK AND MANIFOLD 750 165 Valve Pressure Re
79. e continue with this procedure 7 Disconnect and lock out input power to the applicator 8 Remove the perforated end panel 9 Reverse the input service wires connected to terminals 2 x and 3 on input terminal block 1 of one of the applica tors 10 Reinstall the perforated end panel 11 Restore input power to the applicator 12 Recheck the voltage between the hose fittings as previously described NOTE voltage obtained will either be the difference between the input voltages to the hose circuits or the sum of the input voltages If the voltage equals the difference installation is complete If the voltage equals the sum refer back to Voltage Equal to the Sum of Input Voltages for corrective action Ensure that all insulating hose cuffs are properly installed over fittings to prevent inadvertant con tact by personnel or with the parent machine Dis connect and lock out input power to the applicator until the appropriate step in Section III Setup and Initial Operation U ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 19 SECTION III OPERATING INSTRUCTIONS SETUP AND INITIAL OPERATION Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive material and hot gun surfaces The Mode
80. e constructed using the standard air craft teflon hose covered with a silicone rubber tube then covered with an EPDM cover The hose with sensor has two wraps of silicone rubber tape covered by an EPDM tube The hose is covered with a nylon braid for abrasion resistance Temperature within the hose is monitored by a resistance tempera ture detector RTD inside the hose and controlled by an adjust able temperature control in the applicator electrical cabinet Figure 2 details the insulating cuff configuration This cuff must be installed over each fitting connection to retain heat generated in the hose and to prevent inadvertant electrical shock GEET 273 475 972 054 SS 272 312 273 474 939 004 Figure 2 Model VII Hose Insulating Cuff ISSUED 12 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved LITHO U S A Publication No 108 036A 45 3 18 Part No 846 846 846 846 846 846 846 842 240 271 272 939 972 012 024 036 048 060 072 096 120 665 272 312 004 054 Hose Hose Hose Hose Hose Hose Hose Hose Hose Cuff Cuff Tie Packaging and Assembly Division Nordson Atianta Georgia PARTS LIST Description Assembly Model Assembly Model Assembly Model Assembly Model Assembly Model Assembly Model Assembly Model Assembly Model VII VII VII VII VII VII VII TECHNICAL PUBLICATION oo OY Ul amp U N e rh et 0
81. e hose has a large area of surface contact with a cold floor cold steel angle iron or other cold material This may act as a heat sink reducing the temperature of the hose at that point and restrict the adhesive flow which could cause application problems NOTE If a hot melt hose is to be used an application where the hose is suspended by an overhead tool balancer or similar device it is recommended that a hose support be used to minimize damage to the hose The hot melt hose should be supported so that the minimum bend radius is no less than 6 inches and so the weight of the hose will not compress the internal teflon tubing The hose support should neither act as a heat sink nor restrict the hose heat dissipation COPYRIGHI CJ1978 NORDSON Nordson Automatic Hot Melt Hoses 45 3 0 NORDSON CORPORATION e AMHERST OHIO e USA 4 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 45 3 17 MODEL AUTOMATIC HOT MELT HOSE ose Ur CSS NAAN Ge 1 8 HOSE WITH RETAINER 1 ft HOSE WITH SENSOR Figure 1 Model VII Automatic Hot Melt Hose The automatic hose for use with the Model VII applicator and the H20E automatic extrusion gun is an aircraft type hydraulic hose constructed with a teflon innertube reinforced with a stainless steel wire braid Heat is generated in the hose by passing a current through the wire braid and fittings The Model VII hose assemblies without sensors ar
82. e old and new materials are not compatible flush the system using the procedures detailed in Section IV System Cleaning Contact your adhesive supplier for compatibilities and acceptable flushing solvents Q Never clean components or flush any system using halo genated hydrocarbon solvents NOZZLE CLEANING Nozzle clogging occurs whenever a filter screen is damaged or there is charred material in the hose or gun Char can occur when an adhesive is heated above the application temperature recommended by the adhesive manufacturer If charring occurs it may be necessary to replace the hose and or gun ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 25 The flash point of Type R solvent is 572 F 289 C Do not heat this material above 475 F 245 C See Section 59 1 for further details Do not heat Type R solvent with an open flame or in an unregulated heating device i e a small pan on an unregulated hot plate fire hazard may exist if an open flame or uncontrolled hot plate is used to heat Type R sol vent controlled heating device i e a small deep fat fryer or thermostatically controlled hot plate shall be used to heat the solvent above the melting temperature of the hot melt adhesive material Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive m
83. el Outside Tank 1 Panel Outside 1 600 085 Tag Warning 1 981 857 stud 1 4 Turn 2 981 858 washer 1 4 Turn 2 985 101 Rivet Pop 2 41 240 574 Support Rear Cabinet 1 981 855 Receptacle 1 4 Turn 2 981 856 Nut 1 4 Turn 2 42 933 122 Cover Transformer Terminal 1 Block 43 984 111 Nut Hex 8 32 14 44 240 597 Transformer 230 460 VAC Only 1 44 243 921 Transformer 200 VAC Only 1 45 240 674 Tag Ground 1 46 984 129 Nut Hex 10 32 Brass 3 47 981 066 Screw Round Head 8 32 x 2 0 25 48 Panel Control Mounting 1 270 179 Panel Mounting 1 240 717 Harness Control Mount Wiring 1 931 014 wire 18 Black 5 2 ft 931 084 S eeving Insulation 3 933 071 Terminal Ring Tongue 12 Marker Wire 939 110 Strap Cable 2 937 036 24 Contactor 2 981 149 Screw Round Head 10 32 x 4 0 38 in 933 099 Plug Octal 1 981 027 Screw Fillister Head 6 32 x 2 1 25 in 49 933 128 Jumper Terminal Block 4 50 983 111 Lockwasher Split No 8 10 ISSUED 1 82 SUPERSEDES C NORDSCN CORPORATION 1982 Rights Reserved 41 7 90 Packaging Assembly Division Atlanta Georgia TECHNICAL PUBLICATION PARTS LIST Continued Item No Part No Description Req d 51 984 509 Nut Round w Slot 8 32 4 52 240 668 Spacer Leg 4 53 933 124 Cover Transformer Terminal 1 Block 230 460 VAC
84. essure to piston 6 pump Faulty pressure regulator A7 Faulty solenoid valve A7 ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 31 TABLE 3 TROUBLESHOOTING CHART MECHANICAL SUMMARY Continued Fault Condition Probable Cause Ref AIR MOTOR NOT Air cylinder leakage A8 STROKING Continued Damaged air control valve A9 Air cylinder mechanical failure A12 Hydraulic cylinder malfunction A12 NO ADHESIVE FROM No air pressure to gun solenoid Bl GUN AIR MOTOR valve STROKING Failed pressure regulator Bl Faulty solenoid valve Bl Clogged nozzle B2 Internal blockage or damage B2 in gun AIR MOTOR STROKING Pump starved eni ERRATICALLY OR TOO FAST Circulation valve improperly C2 set Pressure relief valve stuck C4 open Circulation valve damaged C5 Damaged air cylinder components C6 Damaged hydraulic cylinder C6 components PUMP STROKES RAPIDLY Failed plunger packing D1 ON UP STROKE ONLY MOLTEN MATERIAL Piston packing failed 1 PUDDLES AROUND PUMP MOUNT gg ISSUED 1 82 SUPERSEDES 3 73 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 32 Atlanta Georgia TECHNICAL PUBLICATION TABLE 4 TROUBLESHOOTING CHART MECHANICAL If the applicator is operable flush the system before assembly If the pump is not operable but the heating system is functional heat the unit to applicat
85. external electrical power before removing protective panels or replacing electrical components Remove all jewelry rings watches etc before servicing equipment If possible stand on a rubber mat when servicing Nordson equipment Do not work on equipment if standing water is present Avoid working in a high humidity atmosphere Cover exposed terminals and work area with rubber sheeting to avoid accidental contact while the power is ON 7 86 SUPERSEDES 2 85 NORDSON CORPORATION 1986 All Rights Reserved P amp A Division 40 1 4 Atlanta Georgia TECHNICAL PUBLICATION Always wear safety glasses protective gloves Nordson P N 902 514 equivalent and long sleeved protective clothing to prevent injury from hot applicator parts splashed hot melt adhesive and hot gun surfaces To prevent serious injury from molten adhesive under pressure always relieve system hydraulic pressure by triggering the handgun for example before opening any hydraulic fitting or connection Never use an open Torch drill or broach when cleaning a nozzle Never continue to operate equipment with a known leak in the system SAFETY WHEN USING HOT MELT ADHESIVES AND SOLVENTS HOT MELT ADHESIVES Use extreme care when working with molten materials They solidify rapidly at high temperature and present a hazard Severe burns can occur if the molten materials come in contact with the skin Even when first solidified they are s
86. f filter is tightened in a cold system SYSTEM CLEANING The entire hot melt adhesive application system shall be flushed periodically to remove excess dirt and charred material Use the following procedure to clean out and change adhesive material Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive material and hot gun surfaces Relieve system pressure before breaking any mechanical connections or opening any valves by reducing pump air pressure to zero momentarily triggering all guns and opening filter drain Some solvents may not be compatible with the hot melt adhesive material Sludge formation can further com pound the problem Test the solvent with a small sam ple of adhesive before using the solvent in the system ISSUED 1 82 SUPERSEDES 7 77 LITHO U S A 10 11 12 13 14 7 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 29 With the unit at operating temperature remove all adhesive from the system by pumping through the filter drain and or circulation valve drain Reduce pump air pressure to zero at the regulator as draining 15 completed Place several pounds of fresh uncontaminated adhesive ma terial normally used in production into the adhesive tank NOTE Type R solvent may be used in place of adhesive ma terial Contact the adhesive manufacturer for sol vent
87. f hoses Do not operate hoses above 450 F 230 C Do not place hose in conduit or confined channel that might restrict heat dissipation Avoid dragging hose on floor or over machinery HOSE TRANSFORMER CONNECTION The recommended electrical current for proper hose and gun heat ing is 28 amps To provide the proper current to this circuit the voltage supplied by the transformer to the hoses and guns must be adjusted for length of hoses and type of guns used The following instructions detail the procedure for properly ad justing hose circuit input voltage Ls Compute the total resistance of hoses to be attached to the Model VII by adding individual resistances of each hose in cluding the two one foot hoses Refer to Table 2 for total resistance of each hose If H20E guns are powered in series with the hoses add 0 130 ohms resistance for each gun to the total resistance computed in step 1 ISSUED 1 82 The total hose and gun circuit resistance must be at least 0 273 ohms If total resistance is less than 0 273 ohms more hose length must be added to the system until the total resistance is at least 0 273 ohms SUPERSEDES 2 81 LITHO U S A Packaging and Assembly Division Mane Georgia TECHNICAL PUBLICATION 41 7 11 3 Compute desired input voltage to the hose and gun circuit by multiplying total hose and gun resistance by 28 4 Referring to Figure 4 determine the terminals on the trans for
88. following paragraphs Preventive maintenance procedures describe measures such as periodic inspections nozzle Cleaning and material changeover Corrective maintenance proce dures describe measures such as equipment troubleshooting removal and replacement of assemblies and disassembly and repair of par ticular components of the system The Model VII hot melt applicator and associated hoses and guns contain energized electrical components with potentials that could be fatal Disconnect and lock out input electrical power before attempting to perform maintenance on this equipment Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive material and hot gun surfaces Relieve system pressure before breaking any mechani cal connections i e gun hose connection adhesive filter etc Open filter drain and circulation valve drain to prevent pressure buildup Never heat any component with a torch or other open flame If it becomes necessary to heat components for maintenance use an electric oven with forced air circulation or a flameless electric heat gun Halogenated hydrocarbon solvents are dangerous when used to clean aluminum components in a pres surized fluid system Halogenated hydrocarbon fluids include fluorocarbon solvents chlorinated solvents brominated solvents and iodinated solvents No available stablizers prevent halo ge
89. han the difference between hose circuit voltages of the individual applicators but less than the sum i e greater than 20 VAC but less than 80 VAC in the Example the systems are connected across different phases Use the following procedure to correct the problem Hot melt applicator systems contain electrical po tentials that could be fatal The input terminal block TB1 and input terminals on the main circuit breaker switch are still electrically energized if external power is not disconnected even though the main circuit breaker switch is open T Disconnect and lock out input electrical power to the ap plicator 2 Remove perforated end panel by turning two 1 4 turn screws counterclockwise 3 3 Reverse the input service wires connected to terminals 1 and 3 on the input terminal block of one of the applica tors 4 Reinstall perforated end panel and secure with two 1 4 turn screws ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 17 18 5 Restore input electrical power to the applicator 6 Recheck the voltage between the hose fittings as previously described NOTE The voltage should be the difference between input voltages to the hose circuits of the individual ap plicators If the voltage is the sum of the voltages refer back to Voltage Equal to the Sum of Input Volt ages for corrective action If the voltage remains the sam
90. herwise on Purchase Order tional filter screen sizes and part numbers ISSUED 1 82 filter screen shipped with f SUPERSEDES ilter assembly unless See Table 10 for op LITHO U S A 41 7 103 Figure 25 Circulation Valve Assembly VII PARTS LIST Item No Part No Description Req d j 241 372 Kit Valve Circulation Ref 2 9 Manifold Circulation Valve 1 3 241 764 9 Guide Stem 1 4 241 765 9 Stem Circulation Valve 1 5 954 014 9 Ring Backup 0 44 x 0 62 in 2 5 941 112 9 O ring Viton 0 44 x 0 62 in 1 7 750 030 Seat and Stem Circulation 1 Valve 8 750 027 Washer Seal 1 9 981 700 9 Screw Lock 5 8 18 1 10 973 431 9 Plug Pipe 1 2 NPT 1 11 241 365 Valve Ball Drain See Figure 1 26 Used with circulation valve P N 241 367 41 7 Issued 8 90 Nordson Corporation 1990 41 7 104 Figure 26 Drain Ball Valve PARTS LIST Item No Part No Description Req d 241 365 Valve Ball Drain HM VII Ref 1 240 707 Handle Drain Valve 1 2 240 706 9 Fitting Drain 3 973 177 Elbow Street Pipe 3 8 NPT 1 4 750 041 9 Housing Valve 1 5 750 059 Seal Valve 2 6 750 135 9 Ball 1 7 9 Seal Body 1 8 750 056 Cap Body 1 9 973 057 Nipple Pipe 3 8 NPT x 1 32 in 1 10 750 047 Washer Thrust 1 1 750 046 9 Packing Stem 12 750 045 9 Nut Stem Gland 1 13 750 048 9 Spring Flat 1 14 750 050 9 Screw Cross i Stem 1 15 750 044 _ 41 7elssue
91. hose and gun circuit Check trans former terminal board for proper connection ISSUED 1 82 SUPERSEDES 2 77 C NORDSON CORPORATION 1982 Rights Reserved Packaging and Assembly Division 41 7 54 Atlanta Georgia TECHNICAL PUBLICATION TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued NORMAL INDICATION Proper voltage ABNORMAL INDICATION Im selected Proper terminal con proper voltage selected nections made Proceed to the Reconnect hose wires on next step transformer terminal board to proper termi nals Restore system to normal operation D3 Remove wire No 1 or wire No 12 from transformer terminal block and cover exposed wire end with tape Restore input electrical power to the applicator and close main circuit breaker switch and hose circuit breaker Measure trans former output voltage between terminals 1 and 12 on trans former terminal board NORMAL INDICATION 77 VAC Dis ABNORMAL INDICATION connect and lock out input Less than 77 VAC Re electrical power to applicator place transformer and and reconnect wire Restore restore system to system to normal operation normal indication HOSES AND GUNS OVERHEATING El Disconnect and lock out input electrical power to applicator Input terminal block 1 and input terminals on main circuit breaker switch are electrically energized if external power is not disconnected even though the main circuit breaker switch 15 open E2 Recalcula
92. hose temperature controller and check resistance between the wires NORMAL INDICATION Hose sensor ABNORMAL INDICATION Re resistance from 675 ohms at sistance outside noted 709 21 C to 1500 ohms at range Proceed to the 475 F 245 C Reconnect wire next step and proceed to step 17 C15 Remove tank front panel and measure resistance between TB3 1 and TB3 2 NORMAL INDICATION Hose sensor ABNORMAL INDICATION Re resistance within the range sistance outside range specified in step 14 Pro Replace 1 ft hose w ceed to the next step sensor Restore system to normal operation C16 Check continuity of wire No 29 between TB3 1 and termi nal 3 on hose temperature controller Check continuity of wire No 30 between TB3 2 and terminal 4 on controller NORMAL INDICATION Continuity ABNORMAL INDICATION Proceed to the next step Open circuit Replace defective wire and re store system to normal C17 Check hose control relay in the following manner a Remove electrical cabinet rear panel and disconnect wire No 27 from hose temperature control relay Measure resistance between terminals on relay between wire No 27 and wire No 28 NORMAL INDICATION Approximately ABNORMAL INDICATION 100 ohms Reconnect wire No 27 Open circuit Replace and proceed to the next step hose control relay and restore system to nor mal operation b Check continuity of wire No 27 and wire No 28 by measuring between control re
93. icator air pressure too high Reduce air motor air pressure at the regulator A3 Check adhesive viscosity NORMAL INDICATION Ad Normal Indication None hesive visocity within normal limits ISSUED 9 81 SUPERSEDES 6 71 CORPORATION 1981 All Rights Reserved Packagi dA mbly Division 40 0 14 Wordson and Assembly Divisio TECHNICAL PUBLICATION HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION Abnormal Indication Ad hesive viscosity too low Adjust one or more of the following parameters as necessary 1 Reduce air motor air pressure 2 Reduce application temperature 3 Use lower flow rated nozzle 4 Use a higher viscos ity adhesive ADHESIVE CHARRING IN TANK Bl Check tank temperature NORMAL INDICATION Tank Normal Indication Pro temperature within nor ceed to step B2 mal limits Abnormal Indication Tank temperature too high Re duce tank temperature B2 Check tank temperature controller in accordance with applicator service manual NORMAL INDICATION Tank Normal Indication Pro temperature controller ceed to step B3 functioning properly Abnormal Indication Faulty temperature con troller Repair or replace controller B3 Check adhesive level in tank NORMAL INDICATION Tank Normal Indication Pro full of adhesive ceed to step 4 ISSUED 9 81 SUPERSEDES 6 71 LITHO U S A 4 Packagin dA bly
94. input voltages range from 180 to 220 VAC as in Japan ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A 7 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 5 6 MODEL VII HOT MELT APPLICATOR PUMP The Model VII hot melt applicators are available with a piston pump designed for use with low temperature low viscosity thermo plastic materials such as wax The pump contains extra seals in the hydraulic section to prevent leakage MODEL VII HOT MELT APPLICATOR BLANKET The 230 VAC and 460 VAC Model VII hot melt applicators are also available with connections for a nitrogen gas supply to blanket the thermoplastic material in the tank with a layer of inert gas This configuration allows the use of thermoplastics subject to rapid degradation in an air atmosphere The Model VII N appli cators are equipped with a special pump with extra seals to pre vent leakage from the pressurized tank TABLE 1 FEATURE VARIATION SUMMARY Part Number Description 240 748 HM VII Hot Melt Applicator 230 VAC 241 102 HM VII Hot Melt Applicator 460 VAC 243 926 HM VII J Hot Melt Applicator 200 VAC 270 057 HM VII Hot Melt Applicator w Wax Pump 230 VAC 270 058 HM VII Hot Melt Applicator w Wax Pump 460 VAC 270 O71 HM VII J Hot Melt Applicator w Wax Pump 200 VAC 270 059 HM VII N Hot Melt Applicator w Nitrogen Blanket 230 VAC 270 069 HM VII N Hot Melt Applicator w Nitrogen Blanket 460 VAC I
95. ion C10 With input electrical power applied to the applicator set hose temperature controller to maximum setting and note if control relay contacts close NORMAL INDICATION Control relay ABNORMAL INDICATION contacts close Proceed to step Control relay contacts C18 do not close Proceed to the next step Cll Check input voltage to hose temperature controller by measuring between terminals 1 and 2 wire Nos 17 and 18 on controller NORMAL INDICATION 115 VAC Pro ABNORMAL INDICATION No ceed to the next step voltage Proceed back to step C6 and check for failed transformer C12 Check hose temperature controller output voltage between terminals 5 and 6 wire Nos 27 and 28 with controller dial at maximum setting NORMAL INDICATION 115 VAC Pro ABNORMAL INDICATION No ceed to the next step voltage Replace hose temperature controller and restore system to normal operation C13 Disconnect and lock out input electrical power to the ap plicator Input terminal block 1 and input terminals on main circuit breaker switch are electrically energized if external power is not disconnected even if main cir cuit breaker switch is open ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 Rights Reserved Packaging Assembly Division 41 7 52 Atlanta Georgia TECHNICAL PUBLICATION TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued 14 Remove wire No 29 or wire 30 from
96. ion temperature and drain to ease dis assembly Otherwise a heat gun or other flameless heating method must be used to melt solidified hot melt adhesive material on internal parts Before removing any panels to start disassembly turn main circuit breaker switch OFF and disconnect and lock out input electrical power to prevent injury from energized electrical components Relieve system pressure before attempting to loosen any part of the manifold hose or gun system by securing air to pump triggering all guns and opening filter drain Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive material and hot gun surfaces Never heat any component with a torch or other open flame If a component must be heated use an electric oven with forced air circulation or a flameless elec tric heat gun gt P gt gt Review the Safety Summary Section 40 1 before attempting to perform maintenance on this equipment The Safety Summary is duplicated in the front of this service manual AIR MOTOR NOT STROKING Al Check tank and hose temperature controllers for proper settings NORMAL INDICATION Tempera ABNORMAL INDICATION ture in tank corresponds Tank temperature and to temperature setting or hose temperature Both controllers set at not properly set Re proper temperature Pro set to proper level ceed to next step See Electri
97. it breaker switch on applicator and check continuity from input to output terminals on main circuit breakers Also check continuity between output wires on circuit breaker switch NORMAL INDICATION Continuity ABNORMAL INDICATION between input and output wires Open circuit between Open circuit or resistance be input and output wires tween breakers Proceed to or short circuit be the next step tween breakers place main circuit breaker switch and restore system to normal operation C6 Check for loose or broken wiring connections on all elec trical components Check all wiring for exposed wire shorting to ground or to another wire or terminal ISSUED 1 82 SUPERSEDES 8 78 NORDSON CORPORATION 1982 Alf Rights Reserved Packaging Assembly Division 41 7 50 Atlanta Georgia TECHNICAL PUBLICATION TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued NORMAL INDICATION All wiring ABNORMAL INDICATION Re connections tight with no place defective wiring broken or exposed wires Pro and tighten loose con ceed to the next step nections Restore sys tem to normal operation C7 Check transformer output voltage in the following manner a Remove wire at either terminal 1 or X2 on the secondary side of transformer and cover exposed wire terminal with tape b Remove wire at either terminal 1 or 12 on the transform er terminal board and cover exposed wire terminal with tape c Restore input
98. l Siphon 1 15 900 023 oBall 440 Stainless Steel 0 75 in 1 16 240 534 oSeat Siphon Ball 1 17 244 450 oSeal Packing 1 18 244 453 oBody Gland With Packings 1 19 983 184 Lockwasher Bearing 1 20 984 545 oLocknut Bearing 1 21 243 109 oMounting Pump 1 22 276 718 o Plunger 1 23 952 130 oU cup Viton 1 24 240 540 oPiston Cup Air Motor 2 25 240 541 oDisc Piston Seal 1 26 240 542 oWasher Piston Cup 2 27 984 153 oLocknut Hex 3 8 16 UNC 2B 1 28 983 061 oWasher Flat 0 406 x 0 812 x 0 065 in 1 29 oTube Crossover 1 30 973 402 oPlug Pipe Socket Flush 1 8 NPTF 1 31 Assembly 1 276 645 ooU spring Snapper 1 276 647 Snapper Weldment Control Arm 1 986 320 oo Retaining Ring External No 25 1 E ring 276 648 ooMount Assembly Snapper 1 32 981 814 oScrew Shoulder 1 4 20 2 41 7 Issued 1 96 ONordson Corporation 1990 41 7 97 PARTS LIST Continued Item No Part No Description Req d 33 940 141 oO ring Viton 0 500 x 0 625 x 2 0 063 in 34 240 543 oCylinder Air 1 35 940 420 oO ring Viton 3 250 x 3 375 x 2 0 063 in 36 954 020 oBack up Ring Single 500 x 1 625 in Plunger Assembly service kit P N 276 827 available for normal applications and service kit P N 276 828 available for wax pumps Crossover Tube service kit P N 240 829 available which contains items 29 33 and 36 41 7 Issued 1 96 ONordson Corporation 1990 41 7 98 Item
99. l VII hot melt applicator and associated guns and hoses contain energized electrical components with potentials that could be fatal Only qualified per sonnel shall operate this equipment Do not trigger guns with cold material in the guns 2 Damage may result to the ball and piston seat mod ule seals Is Check input air pressure to the pump filter regulator at zero pressure 2 Check filter drain valve and circulation valve drain shut Fill the adhesive tank with clean hot melt adhesive material Do not use electrically conductive adhesive in the Model VII 4 Close applicator tank lid immediately to prevent introduc tion of contaminants into the system S Set tank temperature control to the recommended temperature for the adhesive material being applied NOTE Hose temperature control should remain at minimum setting until material in the tank is almost com pletely melted 6 Energize input electrical power to the applicator 7 Close main circuit breaker switch and hose circuit breaker NOTE White POWER ON and amber TANK lights should illuminate Be As the adhesive in the tank starts to reach application temperature set hose temperature controller to application temperature ISSUED 1 82 SUPERSEDES 4 78 NORDSON CORPORATION 1982 All Rights Reserved 41 7 20 10 11 12 13 14 15 16 17 18 19 20 2l 22 Packaging and Assembly Division Atlanta Georgia TECHN
100. lay and hose temperature controller ISSUED 1 82 SUPERSEDES 3 73 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 53 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued NORMAL INDICATION Continuity ABNORMAL INDICATION Proceed to the next step Open circuit Replace defective wire and re store system to normal c Check continuity between wire Nos 11 and 13 and be tween wire Nos 39 and 12 while holding control relay contacts manually closed NORMAL INDICATION Continuity ABNORMAL INDICATION Proceed to the next step Open circuit Replace hose control relay Restore system to normal operation C18 Check continuity across each component in the hose gun circuit by measuring from fitting to fitting NORMAL INDICATION Hose resis ABNORMAL INDICATION tance in accordance with Table Hose resistance valves 2 Gun resistance approximately outside the range 0 13 ohms Restore system to specified in Table 2 normal operation Replace defective hose or gun Restore system to normal operation HOSES AND GUNS UNDERHEATING Dl Disconnect and lock out input electrical power to applicator Input terminal block 1 and input terminals on main circuit breaker switch are electrically energized if external power is not disconnected even though the main circuit breaker switch is open D2 Recalculate transformer output voltage to maintain about 25 to 28 amps in the
101. le Damage may result NOTE Alternate nozzle heating and cleaning techniques include heating components with a flameless heat gun and wiping with a clean cloth submerging parts in an ultrasonic cleaner or submerging parts in a chemical cleaner 9 Reassemble nozzle onto gun 10 Restore system to normal operation FILTER ASSEMBLY CLEANING Clean the adhesive filter once a week unless operating experi ence indicates more or less frequent cleaning is required A complete filter assembly is recommended as a spare for faster filter changes Hot melt system must be at operating tempera ture before filter is removed for cleaning Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent injury from hot appli cator parts splashed hot melt adhesive material or hot gun surfaces Use the following procedure to clean the adhesive filter 1 Heat the system to operating temperature 2 Reduce pump pressure to zero at the regulator 35 Momentarily trigger all guns to relieve trapped hydraulic pressure 4 Open the filter drain over an open container 5 Increase pump air pressure until adhesive flows steadily from the drain Allow material to flow until it is clean and free of all contaminants 6 Reduce pump air pressure to zero at the regulator Failure to relieve system pressure can result in seri ous burns when the filter is removed 7 Unscrew filter assembly and remove from manifold ISS
102. licator should also be protected from unusual dust conditions and severe vibration ISSUED 1 82 SUPERSEDES 2 81 NORDSON CORPORATION 1982 Rights Reserved 41 7 8 4 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION If the applicator is installed outdoors or in a drafty area the guns must be shielded from the wind Rapid heat dissi pation due to air movement across the guns can prevent the guns from operating properly Hoses and guns in the Model VII system are electrically ener gized through the braid and fittings Use protective cuffs and educate personnel to shock hazards Do not use elec trically conductive hot melt adhesive Hose and gun installation and air connection must pre cede connection of external electrical power to the hot melt applicator GUN INSTALLATION H20E Automatic Gun Ls Install the gun on the parent machine in proper alignment with the substrate NOTE The gun mount should be protected from vibration and secured so that the gun will not change position rela tive to the substrate during operation Connect the hoses mechanically to the gun Connect a filter regulator and solenoid valve to the gun NOTE The solenoid valve should be placed as close as possi ble to the gun to prevent introduction of lag time between solenoid valve actuation and gun operation Position the solenoid valve exhaust port away from personnel access areas Rapidly escaping air whe
103. lief Hydraulic 2 240 713 Heat Limiter Tank 1 240 677 Filter Assembly 1 161 106 Screen Filter 1 240 842 Kit Seal Heating and Control 1 750 058 Kit Packing 3 8 in Ball Valve 2 ELECTRICAL 240 665 Hose w Sensor lft 1 939 524 Light Indicating Amber 1 939 525 Light Indicating White 1 270 826 Circuit Breaker 20 30 20 amp 200 230 VAC 1 Units Only 937 140 Switch Main 460 VAC Unit Only 1 937 131 Circuit Breaker 35 amp 1 939 016 Fuse 1 amp 1 939 047 Fuse 10 amp 460 VAC Unit Only 1 939 019 Fuse 15 amp 460 VAC Unit Only 2 240 833 Controller Tank Temperature 1 240 567 Controller Hose Temperature 1 MISCELLANEOUS 270 755 Solvent Type R 1 gal 3 8 liter 1 900 252 Lubricant 1 oz Tube 1 900 236 Paste Teflon ______ _ ISSUED 3 82 SUPERSEDES 1 82 LITHO U S A CORPORATION Amherst Ohio 44001 TECHNICAL PUBLICATION 40 0 0 GENERAL INFORMATION ISSUED 6 81 SUPERSEDES 4 79 NCRDSON CORPORATICN 1981 Rights Reserved P amp A Division Atlanta Georgia TECHNICAL PUBLICATION 40 0 5 NOMOGRAPH FOR HOT MELT BEADS MATERIAL REQUIRED PER 100 FEET THICKNESS INCHES 030 020 010 009 008 007 006 005 004 003 7 002 001 VOLUME GAL IN 150 30 100 080 20 060 040 10 8 030 6 020 4 3 010 008 2 006 004 Al n s ses 6 002 4 3 001 0008 2 0
104. lished by measuring the voltage between a fitting on the end of the one foot hose of any one unit and the same fit ting on any other unit mounted on the same source The voltage measured cannot exceed the difference between the transformer voltages to the hose circuits of the individual units as in the example below EXAMPLE Two Model VII systems Systems A and B are mounted on a single packaging machine Input voltage to the hose circuit in System A is 30 VAC Input voltage to the hose circuit in System B is 50 VAC Therefore the voltage measured between the fittings should be 20 VAC When a voltage measurement is made between the fittings three possible results can occur results 1 voltage equal to the difference between hose circuit voltages 2 voltage equal to the sum of hose circuit voltages and 3 voltage greater than the difference but less than the sum of the voltages These re sults are detailed in the following paragraphs Refer to the appropriate paragraph for corrective action Voltage Equal to the Difference Between Input Voltages If the voltage measured is the difference between input voltages to the hose circuits of the individual applicators i e 20 volts in the Example the systems are in phase and properly connected No further action is required Voltage Equal to the Sum of Input Voltages If the voltage measured is the sum of input voltages to the hose circuits of the individual applicato
105. lubricant P N 900 252 Pull air motor plunger as far out of pump mount as possible Place piston washer 25 over threads Place one piston cup seal 23 over washer with curved edge toward washer Place piston seal washer 24 over cup seal Slide cylinder 33 over the partly assembled piston and seat cylinder onto slab gasket in pump mount Raise air piston to top of cylinder Place second piston cup seal 23 on top of seal washer with curved edge away from washer Place second piston washer 24 over cup seal and secure piston assembly with locknut 26 and washer 27 Place slab gasket 34 into cylinder head 1 groove Secure cylinder head and cylinder to pump mount using four screws 2 and lockwashers 3 Position control valve gaskets 5 onto air cylinder and pump mount Secure air control valve 7 to pump mount and air cylinder head with four screws 6 and lockwashers 3 Refer to Section II Pump Installation for additional as sembly instructions HYDRAULIC PRESSURE RELIEF VALVE REPLACEMENT The Model VII hot melt applicator is equipped with two pressure relief valves to relieve excessive hydraulic pressure that may build up in the hose and gun section of the system One valve screws into the filter manifold and the other into the circula tion valve manifold Both valves relieve into the hot melt adhesive tank Wear safety glasses safety gloves P N 902 514 and protective clothing to prevent i
106. lushing Halogenated fluids include the following solvents Fluorocarbon Solvents Dichlorofluoromethane Trichlorofluoromethane Chlorinated Solvents Carbon Tetrachloride Chloroform Dichloromethane Ethylene Dichloride Methylene Chloride Monochlorobenzene Monochlorotoluene Orthodichlorobenzene Perchloroethylene Trichloroethylene Brominated Solvents Ethylene Dibromide Methyl Bromide Methylene Chlorobromide Iodinated Solvents Ethyl Iodide Methyl Iodide N butyl Iodide Propyl Iodide IF MOLTEN MATERIAL COMES IN CONTACT WITH THE SKIN Do NOT try to remove molten material from the skin Imnediately immerse the affected area in cold clean water Keep the affected area immersed until the material has cooled Do NOT try to remove the cooled material from the skin Cover the affected area with a clean wet compress In cases of severe burns look for signs of shock If shock is suspected have patient lie down use blankets to preserve body heat and elevate the feet several inches Call a physician immediately ISSUED 7 86 SUPERSEDES 2 85 NORDSON CORPORATION 1986 LITHO U S A All Rights Reserved P amp A Division 40 1 6 Atlanta Georgia TECHNICAL PUBLICATION This page intentionally left blank ISSUED 7 86 SUPERSEDES 2 85 NORDSON CORPORATION 1986 LITHO U S A All Rights Reserved 40 2 1 IDENTIFICATION AND USE NORDSON FITTINGS There are two different types of hose adapters and pipe
107. lve electrical connector into receptacle on hose end of applicator Tighten securely Remove panel on air motor enclosure and position enclosure over air motor Secure enclosure with one screw on top of enclosure Position panel on air motor enclosure and secure with four screws Set regulator for zero pressure full counterclockwise Connect external air supply to the filter regulator NOTE Input air to the Model VII applicator does not have to be lubricated INSTALLATION Connect hoses to the one foot hoses attached to the right side of applicator ISSUED 1 82 SUPERSEDES 2 81 NCRDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 10 Atlanta Georgia TECHNICAL PUBLICATION NOTE The front hose is the adhesive material outlet hose to the first gun in the system The back hose is the return hose from the last gun to circulate adhesive material back to the tank Install insulating cuffs over all hose connections using cuffs and clamps provided Hoses in the Model VII system are electrically heated by passing an electrical current through the braid and fittings Failure to install insulating cuffs on all connections may result in electrical shock or equip ment damage Observe the following precautions to prevent premature hose failure a Do not add any insulation or compress existing in sulation Do not overtighten hose cuff clamps Avoid sharp bends and continued flexing o
108. mer that will supply an output voltage closest to the desired voltage Use the example provided below to aid in computations EXAMPLE Two H20E guns with one two foot hose between them and two eight foot hoses to and from the applica tor H20E gun 0 130 0 683 x 28 19 12 volts H20E gun 0 130 1 ft hose 0 021 Voltage between terminals 1 ft hose 0 021 5 and 9 on transformer 2 ft hose 0 042 totals 19 volts 8 ft hose 0 168 8 ft hose 0 168 Total 0 683 ohms TABLE 2 HM VII Hose Part Number and Resistance Cross Reference Total Total Ohms Ohms Old Resis New Resis Description Part No tance Part No tance Hose HM VII 1 ft 0 3 m 846 012 0 060 271 817 0 021 Hose HM VII 1 ft 0 3 m 240 665 0 060 271 827 0 021 w Sensor Hose HM VII 2 ft 0 6 m 846 024 0 120 271 818 0 042 Hose HM VII 3 ft 0 9 m 846 036 0 180 271 819 0 063 Hose HM VII 4 ft 1 2 m 846 048 0 240 271 820 0 084 Hose HM VII 5 ft 1 5 m 846 060 0 300 271 821 0 105 Hose HM VII 6 ft 1 8 m 846 072 0 360 271 822 0 126 Hose HM VII 8 ft 2 6 m 846 096 0 480 271 823 0 168 Hose HM VII 10 ft 3 0 m 846 120 0 600 271 824 0 210 Es Remove perforated end panel from left side of applicator by removing two 1 4 turn screws 6 Remove cover from transformer terminal block mounted verti cally on the left side of the electrical cabinet opening ce Connect hose circuit wires Nos 10 and 11 to the appropriate terminals on the transformer terminal
109. n the solenoid valve is de energized can cause eye injuries Set the regulator to zero pressure full counterclockwise and connect external air supply to the filter NOTE The external air supply should deliver a minimum of 50 psi 345 kPa to the filter regulator to ensure proper gun operation Connect solenoid valve leads to the appropriate timing de vice Install insulating cuffs on all hose gun connections ISSUED 1 82 SUPERSEDES 2 81 LITHO U S A Packaging and Assembly Division Georgia TECHNICAL PUBLICATION 41 7 9 Hoses in the Model VII system are electrically heated by passing an electrical current through the braid and fillings Failure to install insulating cuffs on all connections may result in electrical shock or equipment damage PUMP INSTALLATION 1 With the air motor enclosure removed place the hydraulic pump body into the tank and insert the connecting tube into the hole in the tank bottom Slowly force the pump assembly downward until the pump mount rests on the top of the tank gt Improper installation of the pump assembly may damage 10 HOSE the o ring on the connecting tube causing premature failure of the o ring and improper pump operation Position the pump assembly with air control valve toward hose end of applicator Secure the pump mount to tank using three screws and lock washers Connect solenoid valve and filter regulator to air control valve Plug solenoid va
110. n parts accordance with gun service manual 12 Check trigger adjustment in accordance with gun service manual NORMAL INDICATION Trigger Normal Indication None adjustment within normal limits Abnormal Indicator Ad just trigger in accor dance with gun service manual MOISTURE BUBBLES IN ADHESIVE BEAD ON SUBSTRATE 21 Apply adhesive to dry sub strate and check for mois ture bubbles NORMAL INDICATION No bub Normal Indication Dry bles on dry substrate substrate prior to appli cation of adhesive Pre heat substrate as neces sary Abnormal Indication See AIR IN ADHESIVE ISSUED 9 81 SUPERSEDES NCRDSON CORPORATICN 1981 Rights Reserved Packaging and Assembly Divisi 40 0 22 Wor dson Atlante Georgia TECHNICAL PUBLICATION HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CARTON POP OPEN AFTER LEAVING COMPRESSION SECTION Kl Check adhesive not cooling fast enough too long an open time CORRECTIVE ACTION NORMAL INDICATION Proper Normal Indication Pro open time ceed to step K3 Abnormal Indication Pro ceed to step K2 if open time is too short Use one or more of the fol lowing steps if open time is too long 1 ISSUED 9 81 SUPERSEDES Decrease air pres sure to air motor to decrease bead size Reduce adhesive temperature slightly Reduce line speed through compression Move guns further from substrate Increase distance fr
111. n troubleshooting the Nordson Package of Values is designed to keep our customers productive and profitable by providing Carefully engineered durable products Strong service support The back up of a well established international company with financial and technical strength A corporate commitment to deliver what was specified This service not available in all countries 306 18 662 NORDSON CORPORATION 1993 Issued 2 93 All Rights Reserved How Order Nordson Parts Replacement parts may be ordered through your local Nordson representative or by contacting our Customer Service Centers When ordering parts please use the description shown in the parts list the part or service kit number when listed and the quantity desired Country Telephone Facsimile Argentina 54 1 921 3058 54 1 924 3206 Australia 61 2 838 7144 61 2 838 7394 Austria 43 222 707 5521 43 222 707 5517 Belgium 32 2 720 9973 32 2 720 7371 Brazil 55 11 274 6011 55 11 632300 Canada 416 475 6730 416 475 8821 Chile 56 2 555 7190 56 2 551 7549 Colombia 57 4 266 6965 57 4 266 5716 Denmark 45 42 648 500 45 42 641 101 France 33 1 64 12 14 00 33 1 64 12 14 01 Germany 49 211 2002 0 49 211 254658 Greece 30 1 941 9058 30 1 942 7623 Hong Kong 852 4287228 852 4804685 India 91 22 6442852 91 22 6427520 Italy 39 2 9078 23 40 39 2 9078 24 85 Japan 81 3 3450 8818 81 3 3472 3301 Korea 82 2 428 1931 82 2 427 9387 Malaysia 60 3 703 7248 60 3 791 5152 Mexico 216 988
112. nated hydrocarbon solvents from reacting under all conditions with aluminum components in a pressurized fluid pumping system Never clean any aluminum component or flush any system using halogenated hydrocarbon solvents Use Type R solvent or contact your solvent or adhesive sup plier for a non halogenated hydrocarbon solvent for cleaning and flushing gt PPE P ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 AI Rights Reserved A Packaging and Assembly Division 41 7 24 Atlanta Georgia TECHNICAL PUBLICATION PREVENTIVE MAINTENANCE GENERAL MAINTENANCE 14 Keep applicator clean at all times 2 Hot melt adhesive material supply shall be kept clean and free of contaminants Foreign particles in the hot melt adhesive can block the filter or damage the pump 35 Flush the system daily through the filter drain and the circulation valve drain 4 Periodically clean regulator filters 5 Periodically clean applicator filter assembly 6 Periodically clean the inside of the control cabinet with an alr purge ae Check electrical connections and terminal blocks for security Vibration and heating cooling cycles may loosen termi nals resulting in possible damage to electrical components or improper system operation 8 Lubricate piston pump shaft and trip collar semiannually with lubricant P N 900 252 MATERIAL CHANGE If the old and new adhesive materials are compatible add the new material to the tank If th
113. nect and lock out input electrical power to the appli cator Hot melt application systems contain electrical poten tials that could be fatal The input terminal block TB1 and the input terminals on the main circuit breaker switch are still electrically energized if external power is not disconnected even though the main circuit breaker switch is open 2 Remove perforated end panel by disconnecting two 1 4 turn screws ISSUED 1 82 SUPERSEDES 4 78 NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 14 Atlanta Georgia TECHNICAL PUBLICATION SCH Reconnect hose circuit wires Nos 10 and 11 to provide 1 or 2 VAC more to the hose and gun circuit 4 Reinstall terminal board cover and perforated end panel Se Restore input electrical power to the applicator and close main circuit breaker switch and hose circuit breaker Take an amperage reading on the hoses Vs Repeat this procedure until the amperage reading is at least 24 amps but no greater than 30 amps Hose Circuit Breaker Trips or Amperage Greater than 30 amps Ts Disconnect and lock out input power to the applicator Hot melt application systems contain electrical poten tials that could be fatal The input terminal block TB1 and the input terminals on the main circuit breaker switch are still electrically energized if external power is not disconnected even though the main circuit breaker switch is open 2
114. ng Fittings And Manifold of Gun And Manifold of Gun or Applicator or Applicator Figure 1 Diagram of O Ring and Pipe Thread Fittings for H20 Noncirculating Guns H200 Automatic Guns and Series 2000 Applicators 3 Installation of O Ring Fittings a Lubricate the fitting threads and o ring with Never Seez P N 900 344 making sure first that the o ring and threads are free of dirt and other foreign particles 40 2 Issued 3 87s Nordson Corporation 1987 40 2 2 b Thread the fitting by hand into the threaded port the gun or applicator c Tighten the fitting only enough to seat It should seat when the body of the metal fitting contacts the manifold surface Between 7 and 10 ft lbs of torque is required to create an effective seal Any time the fitting is removed the o ring must be replaced Otherwise the o ring will not seat properly Use only Nordson o rings P N 945 032 4 Replacement of O Rings a Be sure that the o ring Nordson P N 945 032 and its groove are free of foreign particles b Stretch the o ring and carefully roll it over the threads onto the groove in the hose adapter or pipe plug Take care not to stretch the o ring any more than necessary c Install fitting according to instructions in step 3 A complete listing of Nordson fittings and their o ring replacements where replacements are available is provided in the chart below Pipe Th O Ring Description of Fitting and
115. njury from hot appli cator parts splashed hot melt adhesive material and hot gun surfaces ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved Packaging and Assembly Division 41 7 62 Atlanta Georgia TECHNICAL PUBLICATION Is Remove system pressure before breaking any mechanical connections by securing air to the air motor momen E tarily triggering guns and opening filter and cir culation valve drains rculation Valve Manifold Relief Valve Replacement Heat the applicator to operating temperature and drain the adhesive tank to a level below the deflector plate Remove deflector plate from tank by removing one screw Remove relief valve Reinstall new relief valve Coat threads with teflon paste P N 900 236 Position deflector plate over relief valve and secure with one screw Restore the applicator system to normal operation Filter Manifold Relief Valve Replacement 1 Heat the applicator to operating temperature and drain the adhesive tank to a level below the relief valve Secure air to pump filter regulator Momentarily trigger all guns to relieve trapped hydraulic pressure in the system Open filter manifold drain and circulation valve manifold drain Remove air motor enclosure back cover by loosening four screws Remove air motor enclosure by removing one screw on top of enclosure Unplug solenoid valve electrical connector Disconnect and lock out input
116. om deposition to compression Increase compression length Cool substrate Use lower flow rated nozzle Change bead pattern from constant to intermittent LITHO U S A Gate Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 40 0 23 HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE CORRECTIVE ACTION 10 Use adhesive with shorter open time See adhesive manu facturer K2 Check adhesive cooling too fast too short an open time NORMAL INDICATION Pro Normal Indication Pro per open time ceed to step K3 Abnormal Indication Use one or more of the fol lowing steps to correct the problem 1 Increase air pres sure to air motor to increase bead size 2 Increase adhesive temperature slight ly 3 Move guns closer to substrate 4 Shorter distance from deposition to compression 5 Heat substrate 6 Use higher flow rated nozzle 7 Change bead pattern from intermittent to constant or in crease bead length 8 Protect deposit and or gun from cold or moving air ISSUED 9 81 SUPERSEDES 11 73 HORDSON CORFORATION 1961 Packagi dA bly Division 40 0 24 E TECHNICAL PUBLICATION HOT MELT TROUBLESHOOTING CHART CONTINUED SYMPTOM PROCEDURE 2 E CORRECTIVE ACTION 9 Use longer open time adhesive See ad hesive manufacturer K3 Check for sheared ad hesive deposit NORMAL INDICATION Ad Normal Indication None he
117. on than the other Cl Check adhesive tank for proper level and sufficient melting NORMAL INDICATION Adhesive ABNORMAL INDICATION In in molten state and tank at crease tank temperature least one half full of adhe setting and or add fresh sive Proceed to the next adhesive to tank If step tank is not heating refer to Electrical Troubleshooting Chart for procedure and cor rective action C2 Close circulation valve and check that pump slows noticeably NORMAL INDICATION Pump ABNORMAL INDICATION NO stroking slows noticeably change in pump stroking Reset circulation valve for Proceed to next step 10 to 15 strokes per minute C3 Relieve system pressure by reducing pump air pressure to zero at the regulator momentarily triggering gun to re lieve trapped hydraulic pressure and opening filter drain and circulation valve drain C4 Remove each pressure relief valve and check for char or foreign material on seat NORMAL INDICATION Relief ABNORMAL INDICATION valves free of char and Fouled seat Dis foreign material Rein assemble and clean stall valves and proceed valve Reinstall valve to the next step and restore system to normal operation C5 Remove circulation valve and check internally for char foreign material or physical damage ne ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLI
118. ondition Probable Cause Ref TANK FAILS TO HEAT Main fuses blown 460 VAC 1 UNDERHEATS unit only Control circuit fuse blown Al Defective main circuit breaker A4 switch Improper transformer output 6 voltage Tank heat limiter open A7 Defective tank temperature 9 controller Faulty tank control relay All Tank heater open 14 TANK OVERHEATS Defective tank heat limiter B3 Tank temperature controller B4 defective Tank temperature control relay B5 contacts welded shut HOSES AND GUNS Hose temperature controller FAIL HEAT improperly set Main fuses blown 460 VAC C2 unit only Control circuit fuse blown C2 Defective main circuit breaker C5 switch Improper transformer output C7 voltage Hose circuit breaker defective C8 o uaaa ISSUED 1 82 SUPERSEDES 4 72 LITHO U S A WM Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 41 TABLE 5 TROUBLESHOOTING CHART ELECTRICAL SUMMARY Continued Fault Condition Probable Cause Ref HOSES AND GUNS Hose temperature controller C11 FAIL TO HEAT defective Continued Failed hose temperature sensor C14 Defective hose control relay C17 Defective hose C18 Defective gun C18 HOSES AND GUNS Improper transformer output D2 UNDERHEATING voltage Transformer defective D3 HOSES AND GUNS Improper transformer output E2 OVERHEATING voltage Defective hose temperature E3 sensor Hose temperature controller 4 defective
119. position control knob to proper setting C2 Open the main circuit breaker switch on the applicator Remove each of the main power fuses and the control power fuse Check for continuity NORMAL INDICATION Continuity ABNORMAL INDICATION Reinstall fuses and restore Open circuit Re input power to applicator place defective fuse Proceed to the next step Reinstall fuses and restore system to normal operation ISSUED 1 82 SUPERSEDES 7 77 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 49 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued C3 With input power connected measure line voltage at termi nal board 1 between terminals 1 and 2 2 and 3 1 and 3 NOTE If single phase operation is utilized measure line voltage between terminals 1 and 2 Check wire No 3 attached at terminal 1 11 NORMAL INDICATION Voltage ABNORMAL INDICATION Un specified on applicator front equal or no voltage panel measured between each of measured between termi the above points Proceed to nals Check input the next step voltage source and re store system to normal operation C4 Disconnect and lock out input electrical power to the applicator Input terminal block TB1 and input terminals on main circuit breaker switch are electrically energized if external power is not disconnected even though the main circuit breaker switch is open C5 Close main circu
120. r assembly has been included for reference only ISSUED 1 82 SUPERSEDES NORDSON CORPORATION 1982 All Rights Reserved 41 7 76 Item No Part No Description Req d _ 240 748 Applicator VII 230 VAC Ref 270 057 Applicator VII w Wax Pump Ref 230 VAC 241 102 Applicator HM VII 460 VAC Ref 5 270 058 Applicator VII w Wax Pump Ref 460 VAC 243 926 Applicator VII J 200 VAC Ref 270 071 Applicator VII J w Wax Pump Ref 200 VAC 1 Assembly Heating and Control 1 2 244 404 Pump w Enclosure 1 2 270 119 Wax Pump w Enclosure 1 271 485 Plate Information 1 985 101 Rivet Pop 2 241 116 Kit Installation 200 230 VAC 1 Applicators 273 634 se Cuff Insulating 2 972 054 se Connector Male 2 983 150 se Lockwasher Split 0 31 3 981 312 se Screw Hex Head 5 16 18 x 3 1 12 in 939 004 se Tie Cable 4 243 030 se Tag Warning Hot 2 PHOTO NOT AVAILABLE Figure 14 Model VII Hot Melt Applicator Parts List 41 7 WIssued 8 908 Nordson Corporation 1990 41 7 77 PARTS LIST Continued DEER Item No Part No Description Reg d 939 016 Fuse 1 amp 1 272 753 Kit Imstallation 460 VAC 1 Applicator 273 634 Cuff Insulation 2 972 054 Connector Male 2 939 004 Tie Cable 4 983 150 Lockwasher Split 0 31 3 981 312 Screw Hex Head 5 16 18 x 3 1 12 in 243 030
121. rc 300 236 on threads paste P N Inspect o ring pump assembly connecting tube for damage Replace if necessary NOTE Nicks cuts hardening or other physical damage to the o ring constitutes damage beyond repair Place the pump assembly into tank and insert connecting tube into hole in tank bottom Slowly force the pump downward until the pump mount rests on top of tank Improper installatiori of pump assembly may damage the o ring connecting tube causing improper pump operation and premature failure Secure the pump mount to tank using three screws and lock washers Plug in and tighten solencid valve electrical connector Position air motor enclosure over pump assembly and secure with one screw on top of enclosure Position air motor enclosure back panel onto enclosure and secure with four screws Close filter manifold drain and circulation valve manifold drain ISSUED 1 82 SUPERSEDES LITHO U S A 40 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 65 Restore system to normal operation in accordance with Sec tion III Setup and Initial Operation TANK TEMPERATURE CONTROLLER REPLACEMENT The Model VII tank temperature controller is not designed for field repair recalibration Malfunction requires replace ment of the entire temperature controller Use the following procedure to replace the tank temperature controller 10 EL 12 ISSUED The
122. rs i e 80 VAC in the Example the systems are connected to the same phase but are 180 deg out of phase with each other Use the following procedure to correct the problem Hot melt applicator systems contain electrical poten tials that could be fatal The input terminal block 1 and input terminals on the main circuit breaker switch are still electrically energized if external power is not disconnected even though the main cir cuit breaker switch is open ISSUED 1 82 SUPERSEDES 2 77 NORDSON CORPORATION 1982 AM Rights Reserved A Packaging and Assembly Division 41 7 16 Atlanta Georgia TECHNICAL PUBLICATION qs Disconnect and lock out input electrical power to the appli cator 2 Remove perforated end panel by turning two 1 4 turn screws counterclockwise SC Reverse the input service wires connected to terminals 1 2 on the input terminal block 1 on one of the applicators 4 Reinstall the perforated end panel and secure with two 1 4 turn screws 5 Restore input power to the applicator 6 Recheck the voltage between the hose fittings as previously described NOTE The voltage should be the difference between input voltages to the hose circuits of the individual applicators If the voltage is not the difference follow the procedure outlined in the following para graph Voltage Greater than the Difference But Less than the Sum of Input Voltages If the voltage measured is greater t
123. s extruded onto a substrate through various size nozzles in the heated gun depending on bead requirements Figure 1 Model VII Circulating Hot Melt Applicator This service manual contains detailed information required for in stallation operation and maintenance of the Model VII hot melt applicator The Maintenance section is subdivided into preventive maintenance procedures troubleshooting tables and disassembly and repair procedures The manual also includes electrical wiring diagrams and a complete illustrated parts list to aid in mainte nance and parts ordering SPECIFICATION SUMMARY Pumping Medium Hot melt adhesives and other thermoplastic materials Melt Rate 27 lb hr 12 2 kg hr Melt Tank Capacity 20 lb 9 kg Pump Rate 120 lb hr 55 kg hr Operating Temperature maximum 450 F 230 C Pump Ratio 16 1 ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 All Rights Reserved 41 7 Packaging and Assembly Division 2 Atlanta Georgia TECHNICAL PUBLICATION Operating Air Pressure 10 to 80 psi 70 to 550 kPa Air Flow Rate at 60 psi 2 0 cfm 57 liters min 30 strokes minute Unit Weight 160 lb 72 6 kg Dimensions See Figure 2 Electrical Requirements 230 VAC 1 3 phase 50 60 Hz 20 amps 460 VAC 1 3 phase 50 60 Hz 10 amps 180 220 VAC 1 3 phase 50 60 Hz 20 amps T SIDE 0 4 Y 20 8 52 7 cm 38 5 97 7 cm 13 8 35 1 each hole D 0 9 Typ 2 2
124. sive deposit not sheared Abnormal Indication Sheared adhesive de posit Ensure sub strate is not twisted jogged or otherwise subjected to adverse movement in the com pression section See adhesive manufacturer if compression section is smooth ISSUED 9 81 SUPERSEDES LITHO U S A Hot Melt Hose 45 0 0 NORDSON CORPORATION e AMHERST OHIO e USA Nordson CORPORATION Amherst Ohio 44001 TECHNICAL PUBLICATION 45 0 1 10 78 Revised Information USA ISSUED 10 78 SUPERSEDES 0 78 MELT HOSES Q Our instruction manuals clearly state that hot melt hoses are not to be placed inside of conduit but do not state a reason why Hot melt hoses should not be placed inside of any closed cover where heat cannot be dissipated from them This includes electrical conduit insulation of any type or tight metal covers Com plete failure of the hose can result if the hose is insulated beyond the insulation that is included with the hose If the thermocouple section is exposed to a lower temperature it will call for heat even though the extra insulated section is at or above correct operating temperature This will raise the temperature of the extra insulated section above the teflon melting point For this reason customers should be cautioned against enclosing the hot melt hoses in any way that will cause overheating of the hose and failure ADDITIONAL CAUTION Hot nelt hoses should not be secured so that th
125. solation procedure B4 Check continuity of tank temperature controller by measur ing between wire No 35 Normally Closed contact and wire No 36 Common while rotating control knob from maximum to minimum setting ISSUED 1 82 SUPERSEDES 8 78 NORDSON CORPORATION 1982 Rights Reserved Packaging and Assembly Division 41 7 48 Atlanta Georgia TECHNICAL PUBLICATION TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued NORMAL INDICATION Continuity ABNORMAL INDICATION until setting reaches actual Continuity lost at tank temperature then open a different setting circuit to minimum setting from actual tank Proceed to the next step temperature Replace temperature controller and restore system to normal operation B5 Check control relay contacts by checking continuity be tween wire No 6 wire No 42 on 460 VAC unit and wire No 9 and between wire No 7 and wire No 8 Contactor should not be held manually closed for this test NORMAL INDICATION Open cir ABNORMAL INDICATION cuit Restore system to Continuity across normal operation both sets of con tacts Replace control relay store system to normal operation HOSES AND GUNS FAIL TO HEAT Cl Check the position of the hose temperature control knob NORMAL INDICATION Setting at ABNORMAL INDICATION Im proper temperature for adhe proper temperature set sive application Proceed ting for adhesive ap to the next step plication Re
126. sult to the screen preventing proper operation of the filter b Screens may be heated with a flameless electric heat gun and wiped clean with a dry cloth c Use an ultrasonic cleaner filled with solvent to clean the filter components d Use a chemical cleaner to clean the filter components 10 Inspect the screen for damage ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 All Rights Reserved 41 7 28 ED 12 Ales 14 15 16 17 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION NOTE Any dents or breaks in the mesh indicate damage be yond repair Replace with a new screen The screen should always be smaller than the smallest nozzle orifice See Section VI Illustrated Parts List for optional filter screens Slide screen C over core D as shown in Figure 5 Place support on end of screen insert screw through core and tighten screw into filter bung Inspect o ring for damage NOTE Any indication of cuts nicks hardening or other physical damage constitutes o ring failure Replace with P N 941 240 Screw filter assembly into manifold finger tight only Increase input air pressure to pump and purge filter as in step 5 Close filter drain Tighten filter snugly Do not overtighten Ensure filter manifold is at operating temperature before the filter is tightened Cold material on filter and or manifold walls can cause filter screen to collapse i
127. te transformer output voltage to maintain about 25 to 28 amps in hose and gun circuit Check transformer terminal board for proper connections NORMAL INDICATION Proper voltage ABNORMAL INDICATION Im selected Proper terminal con proper voltage selected nections made Proceed to the Reconnect hose wires next step on transformer terminal board to proper termi nals Restore system to normal operation ee ISSUED 1 82 SUPERSEDES 3 73 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 55 TABLE 6 TROUBLESHOOTING CHART ELECTRICAL Continued E3 Remove wire Nos 29 and 30 from hose temperature control ler Measure resistance of hose sensor between the wire ends NORMAL INDICATION Resistance ABNORMAL INDICATION values within the range speci sistance values outside fied in step C14 Reconnect the range specified in wires and proceed to next C14 Replace 1 ft hose step w sensor Restore sys tem to normal operation E4 With hose temperature controller at minimum setting check continuity between wire Nos 11 and 13 and between wire Nos 39 and 12 Do not hold control relay contacts closed for this test NORMAL INDICATION Open circuit ABNORMAL INDICATION Replace hose temperature con Continuity across both troller Restore system to sets of contacts Re normal operation place control relay and restore system to normal operation DISASSEMBLY AND RE
128. till hot s Always wear protective clothing and eye protection when handling molten m terial or working near equipment contain ing hot melt adhesives under pressur HEATING SOLVENTS Do NOT use an open flame or uncontrolled heating device to heat solvents for example a small pan on an unregulated hot plate Avoid fire hazard by using only a controlled heating device to heat solvents for example small deep fat fryer or thermostatically controlled hot plate DO NOT USE PAINT TYPE SOLVENTS UNDER ANY CIRCUMSTANCES These solvents are volatile and may create a fire and or toxic vapor hazard even at room temperature Always be sure the work area is adequately ventilated Avoid prolonged or repeated breathing of solvent vapors ISSUED 7 86 SUPERSEDES 2 85 NORDSON CORPORATION 1986 LITHO U S A All Rights Reserved P amp A Division TM omm Atlanta Georgia TECHNICAL PUBLICATION HALOGENATED HYDROCARBON SOLVENTS Halogenated hydrocarbon solvents are dangerous when used to clean aluminum components in a pressurized fluid system No available stabilizers prevent halogenated hydrocarbon solvents from reacting under all conditions with aluminum components in a pressurized fluid pumping system NEVER clean any aluminum component or flush any system using halogenated hydrocarbon solvents Use Type R solvents or contact your solvent or hot melt supplier for a non halogenated hydrocarbon solvent for cleaning and f
129. ting much differ circuit to minimum setting ent from actual tank Proceed to the next step temperature replace tank temperature con troller and restore system to normal opera tion 10 Check continuity of wire No 35 between TB2 5 and Check continuity of wire No 36 between TB2 3 and TTC NORMAL INDICATION Continuity ABNORMAL INDICATION Proceed to the next step Open circuit or resis tance Replace de fective wire Restore system to normal opera tion All Remove wire No 24 from TB2 7 and wire No 25 from TB2 4 Check continuity between wires NORMAL INDICATION Continuity ABNORMAL INDICATION Tank control relay and wires Open circuit Pro are good Proceed to step ceed to the next step Al4 Al2 Check continuity between wire terminals on tank control relay between wire No 24 end and control relay and be tween wire No 25 end and control relay NORMAL INDICATION Continuity ABNORMAL INDICATION Reconnect wires and proceed Open circuit Replace to the next step defective relay or wire Restore system to normal operation Al3 Check control relay contacts by measuring continuity be tween wire No 6 wire No 42 on 460 VAC unit and wire No 9 and between wire No 7 and wire No 8 while holding contacts manually closed ISSUED 1 82 SUPERSEDES 4 72 C NORDSON CORPORATION 1982 All Rights Reserved WM Packaging and Assembly Division 41 7 46 Atlanta Georgia TECHNICAL PUBLICATION TABLE
130. tion We ll assist you during start up and help train your employees to maintain and operate the equipment Plus parts and service are only a phone call away from one of our strategically located sales and service centers System Engineering Custom designs and modification of standard equipment are available to meet your particular needs From a complete new system for automotive assembly to a special nozzle used in the production of diapers Nordson has the expertise to integrate adhesive and sealant equipment with your manufacturing operation Parts And Accessories In addition to standard replacement parts many accessories are available to help improve productivity and reduce downtime For example heated and non heated in line filters reduce stoppages from clogged nozzles and nozzles in multi orifice offset right angle and other designs are available for special needs Also gloves solvent spare parts kits and other components are in stock for immediate delivery Conversion kits for tapers labelers and box forming equipment are also available To help you eliminate downtime and costly inplant repairs Nordson has developed a Rebuilt Exchange RBX Program which can save you up to 50 percent of the cost of new equipment You may trade in your old worn units hoses and guns for rebuilt Nordson equipment which has the same warranty as new equipment The Nordson Package of Values From specifications assistance to post installatio
131. tor e Check main circuit breaker switch closed E Slowly increase air pressure at the regulator by turning dial clockwise NORMAL INDICATION Gradually ABNORMAL INDICATION increasing audible noise Continue to next step from solenoid Restore if no air issues from system to normal and pro solenoid valve when ceed to step 8 regulator is opened Set regulator to zero and secure input air to regulator Proceed to the next step _ _ ISSUED 1 82 SUPERSEDES 4 78 LITHO U S A 2 Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 35 TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued g Remove solenoid valve from regulator h Restore input air to regulator and slowly increase air pressure out of regulator NORMAL INDICATION Gradually ABNORMAL INDICATION Re increasing audible noise place regulator if no from regulator Replace air issues from regu faulty solenoid valve and lator Restore system restore system to normal to normal operation NOTE Air cylinder malfunctions may be caused by seal leakage or mechanical failure Proceed with fault isolation procedures in the following manner 8 Set pump air pressure to 30 psi 205 kPa and check air motor for leakage NORMAL INDICATION No air ABNORMAL INDICATION leakage apparent Proceed Seal leakage
132. uitable for 230 V plus or minus 5 per cent or from 218 5 V to 241 5 V Products designed essentially for the U S market may be shipped to Europe with 240 volt ratings but in all cases these products will operate on 220 volts Frequency rating is important on motors and transformers but not on heaters An induction motor runs 5 6 as fast on 50 Hz 50 cycles per second as on 60 Hz Further if the motor is rated only for 60 Hz it may overheat on 50 Hz Both motors and transformers run hotter at lower frequencies and must be designed to withstand the higher temperature Products designed for operation at either of two frequencies will be marked as 50 60 Hz or something similar Products designed to operate at only one frequency will be marked 50 Hz or 60 Hz CQ NORDSON CORPORATION 1980 Rights Reserved
133. ve beyond recommended pot life Excessive Amount of Cut off Possible Causes A Insufficient air pressure to the pump B Cold adhesive C Insufficient air pressure to the gun Concentric Circles Possible Causes A Material too hot B Material low in viscosity C High speed appli cation fast gun cycling ISSUED 9 81 SUPERSEDES TECHNICAL PUBLICATION p 2 p t t Ae keng eer 2S oo Qu lt Qmm 5 9 9 9 6 71 LITHO U S A Packagi Assembly Division Ani Gaga TECHNICAL PUBLICATION 40 0 13 HOT MELT TROUBLESHOOTING CHART SYMPTOM PROCEDURE CORRECTIVE ACTION Do not attempt to loosen any part of manifold hose or gun system until air to the unit has been turned off and pres sure has been relieved from hot melt system by triggering the guns Use safety goggles safety gloves P N 902 514 and pro tective clothing to prevent injury from splashed hot material or hot parts ADHESIVE BOUNCES OR SPLASHES FROM SUBSTRATE Al Check adhesive tempera ture settings of appli cator hose and gun NORMAL INDICATION Ad Normal Indication Pro hesive temperature set ceed to step A2 tings normal Abnormal Indication Ad hesive temperature too high Reduce tempera ture A2 Check air pressure to applicator NORMAL INDICATION Air Normal Indication Pro pressure to applicator ceed to step A3 within normal limits Abnormal Indication Ap pl
134. y See 12 11 Em rm E E 0 0205 Ss E T 3 e S 184 15 16 17 18 19 20 4 E EN E ea 29 4 72 2 es GUN SS Edu E INLET 2 2 ZA AIR 1 M ly Z 27 js 25 24 2 2 21 Figure 3 Model VII System Schematic ISSUED 1 82 SUPERSEDES 4 72 NORDSON CORPORATION 1982 Rights Reserved Packaging Assembly Division 41 7 4 Atlanta Georgia TECHNICAL PUBLICATION An air driven dual acting hydraulic piston pump transfers molten material under pressure from the tank to the filter manifold and into heated hoses that carry hot melt adhesive material to and from the extrusion guns The pump assembly consists of a filter regulator solenoid valve air piston with four way air control valve and a dual acting hydraulic pump The air cylinder and hydraulic pump are tied together through a common shaft A ball and seat arrangement at the bottom of the hydraulic cylinder and the relative volumes above and below the hydraulic piston cause molten material to be forced under pressure through a crossover tube into the filter manifold on both the upward and downward strokes of the air piston Overpressure protection is provided by a relief valve in the filter manifold and a relief valve in the circulation valve manifold that open at 1600 psi 11 0 MPa to relieve system pressure back to the adhesive tank Another feature of the system is a
135. y inspect valve shifter and trip collar for proper lubrication and evidence of binding or physical damage NORMAL INDICATION Valve ABNORMAL INDICATION shifter and trip collar prop Valve shifter or trip erly installed and lubricated collar damaged or No evidence of binding or binding Replace dam physical damage Proceed aged parts and restore to next step system to normal opera tion All Remove and disassemble four way air control valve Check for binding and physical damage NORMAL INDICATION No binding ABNORMAL INDICATION or physical damage Reinstall Evidence of binding or valve onto air cylinder Pro physical damage to in ceed to next step ternal valve parts Replace damaged parts and restore system to normal operation LLLL UIL LLU amp Li ISSUED 1 82 SUPERSEDES 8 74 LITHO U S A Packaging and Assembly Division Atlanta Georgia TECHNICAL PUBLICATION 41 7 37 TABLE 4 TROUBLESHOOTING CHART MECHANICAL Continued NOTE Aix motor failure is usually indicated by the pump stalling in an extreme position at one end of the stroke or the other 12 Check for air motor failure by manually shifting the four way air control valve with air pressure applied to the applicator NORMAL INDICATION Air motor ABNORMAL INDICATION Air makes one stroke and stops motor does not stroke Disassemble air cylinder and Disassemble hydraulic replace damaged or binding cylinder and replace components

Manual, Hot Melt Applicator Model VII

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