Nordson EFD 745NC Operating Manual Download Page 1 | Manualshive

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Square Wave 745NC Non-Contact Dispense Valve

Operating Manual

™

Electronic pdf files of Nordson EFD
manuals are also available at
www.nordsonefd.com

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Summary of Contents for 745NC

Page 1: ...Square Wave 745NC Non Contact Dispense Valve Operating Manual Electronic pdf files of Nordson EFD manuals are also available at www nordsonefd com...

Page 2: ...ur no compromise quality standards If you feel that you are not receiving all the support you require or if you have any questions or comments I invite you to write or call me personally Our goal is t...

Page 3: ...ce Maximum cycle time 24 W solenoid 15 ms open and close once 4 W solenoid Continuous Minimum dispensing frequency 24 W solenoid 50Hz 4 W solenoid Continuous Maximum dispensing frequency 24 W solenoid...

Page 4: ...o 5 VDC for the remaining period that the valve is open CAUTION Failure to reduce the voltage will result in permanent damage to the actuation solenoid if the valve is left on longer than 30 ms To avo...

Page 5: ...spike voltage to actuate the valve The spike and hold driver circuit will apply the spike voltage from 1 to 30 ms before transitioning to the hold voltage CAUTION Not using a spike and hold driver ci...

Page 6: ...ning nut to release nozzle plate c Set valve stroke between 10 20 on reference ring d Cycle valve at 50Hz minimum at 50 duty for purging CAUTION CAUTION for 24 watt solenoid only Minimum dispensing fr...

Page 7: ...re 3 Dispensing volume as a function of frequency and pressure 101 6 m 0 004 nozzle Bullet solenoid cable NOTE Use the blue and brown wires of the bullet solenoid cable for BackPack valve actuation Th...

Page 8: ...t seal groove is facing upwards and expanded fully in its groove 6 Replace with new needle assembly Insert into actuation body ensuring that piston seal is not damaged 7 Reassemble the upper stroke co...

Page 9: ...the bullet solenoid 4 Engage wrench flats on bullet solenoid and rotate counterclockwise to remove When loose pull bullet solenoid up slowly to release 5 Place a light film of PTFE grease on O rings...

Page 10: ...S 7028729 Chamber seat plate 7028728 Nozzle 0 004 7028731 Nozzle 0 005 7028732 Nozzle 0 006 7028733 Nozzle 0 007 7028734 Actuator body 7028735 Fluid inlet fitting 7020671 Fluid body O ring Buna N 7028...

Page 11: ...ged Bullet solenoid may not be actuating Replace solenoid Steady drip A steady drip can be caused by a worn needle and seat or a particle holding the needle off the seat Clean and inspect the needle a...

Page 12: ...incompatible with equipment when the equipment is installed and operated in accordance with factory recommendations and instructions Nordson EFD will repair or replace free of charge any defective pa...

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