Applicators LA 825 / LA 825 RC - Welcome to -...

NORDSON BENELUX � MAASTRICHT � THE NETHERLANDS

ApplicatorsLA 825 / LA 825 RC

Manual P/N 7156011_02

- English -

Edition 10/13

P/N 7156011_02 � 2013 Nordson CorporationLA 285 / LA 285 RC

Order numberP/N = Order number for Nordson articles

NoteThis is a Nordson corporation publication which is protected by copyright. Copyright � 2007.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.

© 2013 All rights reserved.- Translation of Original -

TrademarksAccuJet, AeroCharge, Apogee, AquaGuard, Asymtek, Automove, Autotech, Baitgun, Blue Box, Bowtie, Build‐A‐Part, CanWorks, Century, CF,CleanSleeve, CleanSpray, Color‐on‐Demand, ColorMax, Control Coat, Coolwave, Cross‐Cut, cScan+, Dage, Dispensejet, DispenseMate,DuraBlue, DuraDrum, Durafiber, DuraPail, Dura‐Screen, Durasystem, Easy Coat, Easymove Plus, Ecodry, Econo‐Coat, e.DOT, EFD, Emerald,Encore, ESP, e stylized, ETI‐stylized, Excel 2000, Fibrijet, Fillmaster, FlexiCoat, Flexi‐Spray, Flex‐O‐Coat, Flow Sentry, Fluidmove, FoamMelt,FoamMix, Fulfill, GreenUV, HDLV, Heli‐flow, Helix, Horizon, Hot Shot, iControl, iDry, iFlow, Isocoil, Isocore, Iso‐Flo, iTRAX, JR, KB30, Kinetix,KISS, Lean Cell, Little Squirt, LogiComm, Magnastatic, March, Maverick, MEG, Meltex, Microcoat, Micromark, Micromedics, Micro‐Meter,MicroSet, Microshot, Millenium, Mini Blue, Mini Squirt, Moist‐Cure, Mountaingate, MultiScan, NexJet, No‐Drip, Nordson, Optimum, Package ofValues, Paragon, PatternView, PermaFlo, PICO, PicoDot, PluraFoam, Porous Coat, PowderGrid, Powderware, Precisecoat, PRIMARC,Printplus, Prism, ProBlue, Prodigy, Pro‐Flo, Program‐A‐Bead, Program‐A‐Shot, Program‐A‐Stream, Program‐A‐Swirl, ProLink, Pro‐Meter,Pro‐Stream, RBX, Rhino, Saturn, Saturn with rings, Scoreguard, SC5, S. design stylized, Seal Sentry, Sealant Equipment & Engineering, Inc., SEEand design, See‐Flow, Select Charge, Select Coat, Select Cure, Servo‐Flo, Shot‐A‐Matic, Signature, Slautterback, Smart‐Coat, Smart‐Gun,Solder Plus, Spectrum, Speed‐Coat, Spraymelt, Spray Squirt, Super Squirt, SureBead, Sure Clean, Sure Coat, Sure‐Max, Sure Wrap,Tela‐Therm, Tip‐Seal, Tracking Plus, TRAK, Trends, Tribomatic, TrueBlue, TrueCoat, Tubesetter, Ultra, UniScan, UpTime, u‐TAH, ValuePlastics, Vantage, Veritec, VersaBlue, Versa‐Coat, VersaDrum, VersaPail, Versa‐Screen, Versa‐Spray, VP Quick Fit, Walcom, Watermark, Whenyou expect more., X‐Plane are registered trademarks of Nordson Corporation.

Accubar, Active Nozzle, Advanced Plasma Systems, AeroDeck, AeroWash, Allegro, AltaBlue, AltaSlot, Alta Spray, AquaCure, Artiste, ATS,Auto‐Flo, AutoScan, Axiom, Best Choice, BetterBook, Blue Series, Bravura, CanNeck, CanPro, Celero, Chameleon, Champion, Check Mate,ClassicBlue, Classic IX, Clean Coat, Cobalt, ContourCoat, Controlled Fiberization, Control Weave, CPX, cSelect, Cyclo‐Kinetic, DispensLink,DropCure, Dry Cure, DuraBraid, DuraCoat, e.dot+, E‐Nordson, Easy Clean, EasyOn, EasyPW, Eclipse, Equalizer, Equi=Bead, Exchange Plus,FillEasy, Fill Sentry, Flow Coat, Fluxplus, Freedom, G‐Net, G‐Site, Genius, Get Green With Blue, Gluie, Ink‐Dot, IntelliJet, iON, Iso‐Flex, iTrend,KVLP, Lacquer Cure, Maxima, Mesa, MicroFin, MicroMax, Mikros, MiniEdge, Minimeter, MonoCure, Multifil, MultiScan, Myritex, Nano,OmniScan, OptiMix, OptiStroke, Optix, Origin, Partnership+Plus, PatternJet, PatternPro, PCI, PharmaLok, Pinnacle, Plasmod, PluraMix, PowderPilot, Powder Port, Powercure, Process Sentry, Pulse Spray, PURBlue, PURJet, PurTech, Quad Cure, Quantum, Ready Coat, RediCoat, RollVIA,Royal Blue, Select Series, Sensomatic, Shaftshield, SheetAire, Smart, Smartfil, SolidBlue, Spectral, Spectronic, SpeedKing, Spray Works,StediFlo, StediTherm, Summit, Sure Brand, SureFoam, SureMix, SureSeal, Swirl Coat, TAH, Tempus, ThruWave, TinyCure, Trade Plus, Trilogy,Ultra FoamMix, UltraMax, Ultrasaver, Ultrasmart, Universal, ValueMate, Versa, Viper, Vista, WebCure, YESTECH, 2 Rings (Design) areregistered trademarks of Nordson Corporation.

Windows is a registered trademark of Microsoft Corporation.

Paul SpronckCEO

Maastricht, February 16, 2011

NORDSON BENELUX � MAASTRICHT � THE NETHERLANDS

Declaration of Conformity

Guidelines:2006/42/EG2006/95/EG

97/23/EG

Product group:

� Electrical applicator for cold glue

Model number:

� LA 825XX

Part number(s):

� 7303131 LA 825

� 7303141 LA 825 with LED

� 7303151 LA 825 RC

� 7303161 LA 825 RC with LED

International standards fulfilled:

� NEN-EN-ISO 12100-1:2003

� NEN-EN-ISO 12100-2:2003

� EN 60204-1

I hereby take sole responsibility for the declaration that the above product to which thisdeclaration refers fulfills all of the standards and guidelines stated above.

Declared by:

- E

nglis

h -

Table of Contents I

P/N 7156011_02� 2013 Nordson Corporation LA 285 / LA 285 RC

Table of Contents

Nordson International O‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Europe O‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Distributors in Eastern & Southern Europe O‐1. . . . . . . . . . . . . . . . .Outside Europe O‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Africa / Middle East O‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Asia / Australia / Latin America O‐2. . . . . . . . . . . . . . . . . . . . . . . . . .China O‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Japan O‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .North America O‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Instructions Regarding Working with Application Materials 0‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Definition of Terms 0‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Manufacturer Information 0‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Liability 0‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Risk of Burns 0‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Vapors and Gases 0‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Substrate 0‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Processing Temperature 0‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety 1‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Alert Symbols 1‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Responsibilities of the Equipment Owner 1‐2. . . . . . . . . . . . . . . . . . . .

Safety Information 1‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Instructions, Requirements, and Standards 1‐2. . . . . . . . . . . . . . . .User Qualifications 1‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicable Industry Safety Practices 1‐3. . . . . . . . . . . . . . . . . . . . . . . .Intended Use of the Equipment 1‐3. . . . . . . . . . . . . . . . . . . . . . . . . .Instructions and Safety Messages 1‐4. . . . . . . . . . . . . . . . . . . . . . .Installation Practices 1‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operating Practices 1‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance and Repair Practices 1‐5. . . . . . . . . . . . . . . . . . . . . . .

Equipment Safety Information 1‐5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Equipment Shutdown 1‐6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Relieving System Hydraulic Pressure 1‐6. . . . . . . . . . . . . . . . . .De‐energizing the System 1‐6. . . . . . . . . . . . . . . . . . . . . . . . . . . .Disabling the Applicators 1‐6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Safety Warnings and Cautions 1‐7. . . . . . . . . . . . . . . . . . .Other Safety Precautions 1‐10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .First Aid 1‐10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Special Safety Instructions 1‐11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Labels on Applicator 1‐11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Instructions in the Manual 1‐11. . . . . . . . . . . . . . . . . . . . . . . . .

Table of ContentsII


Introduction 2‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Intended Use 2‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unintended Use - Examples - 2‐1. . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Instructions 2‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Residual Risks 2‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Information 2‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Updated Parts List 2‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description of Functions 2‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Functioning 2‐5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Components 2‐5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 825 2‐5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LA 825 RC 2‐6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 3‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Unpacking 3‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Transport 3‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Storage 3‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Disposal 3‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Installing 3‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Connect 3‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Material Lines 3‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Electrical 3‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting the Adhesive Quantity, LA 825 / LA 825 RC 3‐4. . . . . . . . . . .

Operation 4‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .General Adhesive Processing Instructions 4‐1. . . . . . . . . . . . . . . . . . .Compatibility of Different Types of Adhesive 4‐1. . . . . . . . . . . . . . . . .Emergency Shutdown 4‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Initial Startup 4‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Daily Startup 4‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Daily Shutdown 4‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 5‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Preventive Maintenance 5‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning Applicator 5‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Regular Maintenance 5‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembling Applicator LA 825 5‐3. . . . . . . . . . . . . . . . . . . . . . . . . . .Disassembling applicator LA 825 RC 5‐5. . . . . . . . . . . . . . . . . . . . . . .Assembling Applicator LA 825 5‐7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Assembling Applicator LA 825 RC 5‐7. . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 6‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents III


Parts 7‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Introduction 7‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Updated Parts List 7‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Spare Parts 7‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicator LA 825 7‐2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Applicator LA 825 Standard (without LED) 7‐3. . . . . . . . . . . . . . . . .Applicator LA 825 LED 7‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicator LA 825 RC 7‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Applicator LA 825 RC Standard (without LED) 7‐5. . . . . . . . . . . . .Applicator LA 825 RC LED 7‐5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module, Applicator LA 825 7‐6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Module, Applicator LA 825 Standard (without LED) 7‐7. . . . . . . . .Module, Gun LA 825 LED 7‐7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module, Applicator LA 825 RC 7‐8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Module, Applicator LA 825 RC Standard (without LED) 7‐9. . . . . .Module, Applicator LA 825 RC LED 7‐9. . . . . . . . . . . . . . . . . . . . . .

Filter Assembly, Applicator LA 825 / LA 825 RC 7‐10. . . . . . . . . . . . . .Kits 7‐11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Kit, Nozzle, Applicator LA 825 7‐11. . . . . . . . . . . . . . . . . . . . . . . . . . .Kit, Nozzle Stem & Seat, Applicator LA 825 Wear Resistant 7‐12.Kit, Nozzle Stem & Nozzle, Applicator LA 825 RC 7‐13. . . . . . . . . .Kit, Guide, Applicator LA 825 RC (optional) 7‐14. . . . . . . . . . . . . . . .

Accessories 7‐15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cordset 7‐15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hoses 7‐15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cable harnesses 7‐16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Adhesive Connection Adapter 7‐16. . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 8‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .General Data 8‐1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Dimensions 8‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicator LA 825 8‐3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Applicator LA 825 RC 8‐4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of ContentsIV


O‐1Introduction

��2012 Nordson CorporationAll rights reserved

NI_Q-1112-MX

Nordson International

http://www.nordson.com/Directory

Country Phone Fax

EuropeAustria 43‐1‐707 5521 43‐1‐707 5517

Belgium 31‐13‐511 8700 31‐13‐511 3995

Czech Republic 4205‐4159 2411 4205‐4124 4971

Denmark Hot Melt 45‐43‐66 0123 45‐43‐64 1101

Finishing 45‐43‐200 300 45‐43‐430 359

Finland 358‐9‐530 8080 358‐9‐530 80850

France 33‐1‐6412 1400 33‐1‐6412 1401

Germany Erkrath 49‐211‐92050 49‐211‐254 658

Lüneburg 49‐4131‐8940 49‐4131‐894 149

Nordson UV 49‐211‐9205528 49‐211‐9252148

EFD 49‐6238 920972 49‐6238 920973

Italy 39‐02‐216684‐400 39‐02‐26926699

Netherlands 31‐13‐511 8700 31‐13‐511 3995

Norway Hot Melt 47‐23 03 6160 47‐23 68 3636

Poland 48‐22‐836 4495 48‐22‐836 7042

Portugal 351‐22‐961 9400 351‐22‐961 9409

Russia 7‐812‐718 62 63 7‐812‐718 62 63

Slovak Republic 4205‐4159 2411 4205‐4124 4971

Spain 34‐96‐313 2090 34‐96‐313 2244

Sweden 46‐40-680 1700 46‐40‐932 882

Switzerland 41‐61‐411 3838 41‐61‐411 3818

UnitedKingdom

Hot Melt 44‐1844‐26 4500 44‐1844‐21 5358

IndustrialCoatingSystems

44‐161‐498 1500 44‐161‐498 1501

Distributors in Eastern & Southern Europe

DED, Germany 49‐211‐92050 49‐211‐254 658

O‐2 Introduction

��2012Nordson CorporationAll rights reserved

NI_Q-1112-MX

Outside Europe

For your nearest Nordson office outside Europe, contact the Nordsonoffices below for detailed information.

Contact Nordson Phone Fax

Africa / Middle East

DED, Germany 49‐211‐92050 49‐211‐254 658

Asia / Australia / Latin America

Pacific South Division,USA

1‐440‐685‐4797 -

China

China 86-21-3866 9166 86-21-3866 9199

Japan

Japan 81‐3‐5762 2700 81‐3‐5762 2701

North America

Canada 1‐905‐475 6730 1‐905‐475 8821

USA Hot Melt 1‐770‐497 3400 1‐770‐497 3500

Finishing 1‐880‐433 9319 1‐888‐229 4580

Nordson UV 1‐440‐985 4592 1‐440‐985 4593

Introduction 0‐3

HMI02_EN_C-0108� 2013 Nordson Corporation

General Instructions Regarding Working withApplication Materials

Definition of TermsApplication materials can be e.g. thermoplastic hot melt materials, adhesives, sealants, liquid adhesives and similar application materials. They arereferred to as materials.

NOTE: The materials that may be processed with your Nordson product aredescribed in the manual under Intended Use and Unintended Use. When indoubt, please contact your Nordson representative.

Manufacturer InformationMaterials may be processed only when the manufacturer's product descriptions and Safety Data Sheets (MSDS) are observed.

They provide information, amongst other things, on correct processing of theproduct, transport, storage and disposal. Information regarding reactivity andpotentially hazardous decomposition products, toxic properties, flash points,etc. can also be found there.

LiabilityNordson is not be liable for danger or damage resulting from the materials.

Risk of BurnsThere is a risk of burns when handling heated materials. Work carefully andwear appropriate protective clothing/equipment.

Introduction0‐4

HMI02_EN_C-0108 � 2013 Nordson Corporation

Vapors and GasesEnsure that vapors and gases do not exceed the prescribed limits. If necessary, exhaust vapors and gases and/or provide sufficient ventilation of thework space.

SubstrateThe substrate should be free of dust, grease and moisture. The suitable material, optimum working conditions, and possible pre‐treatment of the substrate must be determined by testing.

Processing TemperatureWhen materials require heating, adherence to the prescribed processingtemperature is imperative to ensure the quality of the application. It may notbe exceeded! Overheating can cause material coking or cracking, resulting inmalfunctioning or unit failure.

Material should always be melted gently. Extended, unnecessary temperature load should be avoided. The temperature should be reduced duringbreaks in work. The temperature in the tank should be attuned to the materialconsumption. Thus it is close to the prescribed processing temperature forhigh material consumption and lower for lower consumption.

When materials are processed cold, take into consideration the shear heatand the ambient temperature; cool if necessary.

Safety 1‐1

� 2013 Nordson Corporation Safe_PPA1011LUE_EN

Section 1

Safety

Read this section before using the equipment. This section containsrecommendations and practices applicable to the safe installation, operation,and maintenance (hereafter referred to as “use”) of the product described inthis document (hereafter referred to as “equipment”). Additional safetyinformation, in the form of task‐specific safety alert messages, appears asappropriate throughout this document.

WARNING! Failure to follow the safety messages, recommendations, andhazard avoidance procedures provided in this document can result inpersonal injury, including death, or damage to equipment or property.

Safety Alert Symbols

The following safety alert symbol and signal words are used throughout thisdocument to alert the reader to personal safety hazards or to identifyconditions that may result in damage to equipment or property. Comply withall safety information that follows the signal word.

WARNING! Indicates a potentially hazardous situation that, if not avoided,can result in serious personal injury, including death.

CAUTION! Indicates a potentially hazardous situation that, if not avoided,can result in minor or moderate personal injury.

CAUTION! (Used without the safety alert symbol) Indicates a potentiallyhazardous situation that, if not avoided, can result in damage to equipment orproperty.

Safety1‐2

� 2013 Nordson CorporationSafe_PPA1011LUE_EN

Responsibilities of the Equipment Owner

Equipment owners are responsible for managing safety information, ensuringthat all instructions and regulatory requirements for use of the equipment aremet, and for qualifying all potential users.

Safety Information� Research and evaluate safety information from all applicable sources,

including the owner‐specific safety policy, best industry practices,governing regulations, material manufacturer's product information, andthis document.

� Make safety information available to equipment users in accordance with

governing regulations. Contact the authority having jurisdiction forinformation.

� Maintain safety information, including the safety labels affixed to the

equipment, in readable condition.

Instructions, Requirements, and Standards� Ensure that the equipment is used in accordance with the information

provided in this document, governing codes and regulations, and bestindustry practices.

� If applicable, receive approval from your facility's engineering or safety

department, or other similar function within your organization, beforeinstalling or operating the equipment for the first time.

� Provide appropriate emergency and first aid equipment.

� Conduct safety inspections to ensure required practices are being

followed.

� Re‐evaluate safety practices and procedures whenever changes are

made to the process or equipment.

Safety 1‐3


User Qualifications

Equipment owners are responsible for ensuring that users:

� receive safety training appropriate to their job function as directed by

governing regulations and best industry practices

� are familiar with the equipment owner's safety and accident

prevention policies and procedures

� receive equipment‐ and task‐specific training from another qualified

individual

NOTE: Nordson can provide equipment‐specific installation,operation, and maintenance training. Contact your Nordsonrepresentative for information

� possess industry‐ and trade‐specific skills and a level of experience

appropriate to their job function

� are physically capable of performing their job function and are not

under the influence of any substance that degrades their mentalcapacity or physical capabilities

Applicable Industry Safety Practices

The following safety practices apply to the use of the equipment in themanner described in this document. The information provided here is notmeant to include all possible safety practices, but represents the best safetypractices for equipment of similar hazard potential used in similar industries.

Intended Use of the Equipment� Use the equipment only for the purposes described and within the limits

specified in this document.

� Do not modify the equipment.

� Do not use incompatible materials or unapproved auxiliary devices.

Contact your Nordson representative if you have any questions onmaterial compatibility or the use of non‐standard auxiliary devices.

Safety1‐4


Instructions and Safety Messages� Read and follow the instructions provided in this document and other

referenced documents.

� Familiarize yourself with the location and meaning of the safety warning

labels and tags affixed to the equipment. Refer to Safety Labels and Tagsat the end of this section.

� If you are unsure of how to use the equipment, contact your Nordson

representative for assistance.

Installation Practices� Install the equipment in accordance with the instructions provided in this

document and in the documentation provided with auxiliary devices.

� Ensure that the equipment is rated for the environment in which it will be

used. This equipment has not been certified for compliance with theATEX directive nor as nonincendive and should not be installed inpotentially explosive environments.

� Ensure that the processing characteristics of the material will not create a

hazardous environment. Refer to the Material Safety Data Sheet (MSDS)for the material.

� If the required installation configuration does not match the installation

instructions, contact your Nordson representative for assistance.

� Position the equipment for safe operation. Observe the requirements for

clearance between the equipment and other objects.

� Install lockable power disconnects to isolate the equipment and all

independently powered auxiliary devices from their power sources.

� Properly ground all equipment. Contact your local building code

enforcement agency for specific requirements.

� Ensure that fuses of the correct type and rating are installed in fused

equipment.

� Contact the authority having jurisdiction to determine the requirement for

installation permits or inspections.

Operating Practices� Familiarize yourself with the location and operation of all safety devices

and indicators.

� Confirm that the equipment, including all safety devices (guards,

interlocks, etc.), is in good working order and that the requiredenvironmental conditions exist.

� Use the personal protective equipment (PPE) specified for each task.

Refer to Equipment Safety Information or the material manufacturer'sinstructions and MSDS for PPE requirements.

� Do not use equipment that is malfunctioning or shows signs of a potential

malfunction.

Safety 1‐5


Maintenance and Repair Practices� Allow only personnel with appropriate training and experience to operate

or service the equipment.

� Perform scheduled maintenance activities at the intervals described in

this document.

� Relieve system hydraulic and pneumatic pressure before servicing the

equipment.

� De‐energize the equipment and all auxiliary devices before servicing the

equipment.

� Use only new Nordson‐authorized refurbished or replacement parts.

� Read and comply with the manufacturer's instructions and the MSDS

supplied with equipment cleaning compounds.

NOTE: MSDSs for cleaning compounds that are sold by Nordson areavailable at www.nordson.com or by calling your Nordson representative.

� Confirm the correct operation of all safety devices before placing the

equipment back into operation.

� Dispose of waste cleaning compounds and residual process materials

according to governing regulations. Refer to the applicable MSDS orcontact the authority having jurisdiction for information.

� Keep equipment safety warning labels clean. Replace worn or damaged

labels.

Equipment Safety Information

This equipment safety information is applicable to the following types ofNordson equipment:

� hot melt and cold adhesive application equipment and all related

accessories

� pattern controllers, timers, detection and verification systems, and all

other optional process control devices

Safety1‐6


Equipment Shutdown

To safely complete many of the procedures described in this document, theequipment must first be shut down. The level of shut down required varies bythe type of equipment in use and the procedure being completed. If required, shut down instructions are specified at the start of the procedure.The levels of shut down are:

Relieving System Hydraulic Pressure

Completely relieve system hydraulic pressure before breaking any hydraulicconnection or seal. Refer to the melter‐specific product manual forinstructions on relieving system hydraulic pressure.

De‐energizing the System

Isolate the system (melter, hoses, applicators, and optional devices) from allpower sources before accessing any unprotected high‐voltage wiring orconnection point.

1. Turn off the equipment and all auxiliary devices connected to theequipment (system).

2. To prevent the equipment from being accidentally energized, lock andtag the disconnect switch(es) or circuit breaker(s) that provide inputelectrical power to the equipment and optional devices.

NOTE: Government regulations and industry standards dictate specificrequirements for the isolation of hazardous energy sources. Refer to theappropriate regulation or standard.

Disabling the Applicators

NOTE: Adhesive dispensing applicators are referred to as “guns” in someprevious publications.

All electrical or mechanical devices that provide an activation signal to theapplicators, applicator solenoid valve(s), or the melter pump must bedisabled before work can be performed on or around an applicator that isconnected to a pressurized system.

1. Turn off or disconnect the applicator triggering device (pattern controller,timer, PLC, etc.).

2. Disconnect the input signal wiring to the applicator solenoid valve(s).

3. Reduce the air pressure to the applicator solenoid valve(s) to zero; thenrelieve the residual air pressure between the regulator and the applicator.

Safety 1‐7


General Safety Warnings and Cautions

Table 1‐1 contains the general safety warnings and cautions that apply toNordson hot melt and cold adhesive equipment. Review the table andcarefully read all of the warnings or cautions that apply to the type ofequipment described in this manual.

Equipment types are designated in Table 1‐1 as follows:

HM = Hot melt (melters, hoses, applicators, etc.)

PC = Process control

CA = Cold adhesive (dispensing pumps, pressurized container, andapplicators)

Table 1‐1 General Safety Warnings and Cautions

EquipmentType Warning or Caution

HM

WARNING! Hazardous vapors! Before processing any polyurethanereactive (PUR) hot melt or solvent‐based material through a compatibleNordson melter, read and comply with the material's MSDS. Ensurethat the material's processing temperature and flashpoints will not beexceeded and that all requirements for safe handling, ventilation, firstaid, and personal protective equipment are met. Failure to comply withMSDS requirements can cause personal injury, including death.

HM

WARNING! Reactive material! Never clean any aluminum componentor flush Nordson equipment with halogenated hydrocarbon fluids.Nordson melters and applicators contain aluminum components thatmay react violently with halogenated hydrocarbons. The use ofhalogenated hydrocarbon compounds in Nordson equipment cancause personal injury, including death.

HM, CAWARNING! System pressurized! Relieve system hydraulic pressurebefore breaking any hydraulic connection or seal. Failure to relieve thesystem hydraulic pressure can result in the uncontrolled release of hotmelt or cold adhesive, causing personal injury.

Continued...

Safety1‐8


General Safety Warnings and Cautions (contd.)

Table 1‐1 General Safety Warnings and Cautions (contd)


HM

WARNING! Molten material! Wear eye or face protection, clothing thatprotects exposed skin, and heat‐protective gloves when servicingequipment that contains molten hot melt. Even when solidified, hot meltcan still cause burns. Failure to wear appropriate personal protectiveequipment can result in personal injury.

HM, PC

WARNING! Equipment starts automatically! Remote triggering devicesare used to control automatic hot melt applicators. Before working onor near an operating applicator, disable the applicator's triggeringdevice and remove the air supply to the applicator's solenoid valve(s).Failure to disable the applicator's triggering device and remove thesupply of air to the solenoid valve(s) can result in personal injury.

HM, CA, PC

WARNING! Risk of electrocution! Even when switched off andelectrically isolated at the disconnect switch or circuit breaker, theequipment may still be connected to energized auxiliary devices.De‐energize and electrically isolate all auxiliary devices beforeservicing the equipment. Failure to properly isolate electrical power toauxiliary equipment before servicing the equipment can result inpersonal injury, including death.

HM, CA, PC

WARNING! Risk of fire or explosion! Nordson adhesive equipment isnot rated for use in explosive environments and has not been cerfifiedfor the ATEX directive or as nonincendive. In addition, this equipmentshould not be used with solvent‐based adhesives that can create anexplosive atmosphere when processed. Refer to the MSDS for theadhesive to determine its processing characteristics and limitations.The use of incompatible solvent‐based adhesives or the improperprocessing of solvent‐based adhesives can result in personal injury,including death.

Continued...

Safety 1‐9


Table 1‐1 General Safety Warnings and Cautions (contd)


HM, CA, PC

WARNING! Allow only personnel with appropriate training andexperience to operate or service the equipment. The use of untrainedor inexperienced personnel to operate or service the equipment canresult in injury, including death, to themselves and others and candamage to the equipment.

HM

CAUTION! Hot surfaces! Avoid contact with the hot metal surfaces ofapplicators, hoses, and certain components of the melter. If contactcan not be avoided, wear heat‐protective gloves and clothing whenworking around heated equipment. Failure to avoid contact with hotmetal surfaces can result in personal injury.

HM

CAUTION! Some Nordson melters are specifically designed toprocess polyurethane reactive (PUR) hot melt. Attempting to processPUR in equipment not specifically designed for this purpose candamage the equipment and cause premature reaction of the hot melt. Ifyou are unsure of the equipment's ability to process PUR, contact yourNordson representative for assistance.

HM, CA

CAUTION! Before using any cleaning or flushing compound on or inthe equipment, read and comply with the manufacturer's instructionsand the MSDS supplied with the compound. Some cleaningcompounds can react unpredictably with hot melt or cold adhesive,resulting in damage to the equipment.

HM

CAUTION! Nordson hot melt equipment is factory tested with NordsonType R fluid that contains polyester adipate plasticizer. Certain hot meltmaterials can react with Type R fluid and form a solid gum that canclog the equipment. Before using the equipment, confirm that the hotmelt is compatible with Type R fluid.

Safety1‐10


Other Safety Precautions� Do not use an open flame to heat hot melt system components.

� Check high pressure hoses daily for signs of excessive wear, damage, or

leaks.

� Never point a dispensing handgun at yourself or others.

� Suspend dispensing handguns by their proper suspension point.

First Aid

If molten hot melt comes in contact with your skin:

1. Do NOT attempt to remove the molten hot melt from your skin.

2. Immediately soak the affected area in clean, cold water until the hot melthas cooled.

3. Do NOT attempt to remove the solidified hot melt from your skin.

4. In case of severe burns, treat for shock.

5. Seek expert medical attention immediately. Give the MSDS for the hotmelt to the medical personnel providing treatment.

Safety Instructions 1‐11


Special Safety Instructions

Safety Labels on Applicator

The following safety labels are affixed to the applicator:

ATTENTION: Risk of electrical shock. Failure to observe may result inpersonal injury, death, or equipment damage.

Safety Instructions in the Manual

The following pictographs and the respective safety instructions are used inthe manual:

ATTENTION: Risk of electrical shock. Failure to observe may result inpersonal injury, death, or equipment damage.

ATTENTION: Hot! Risk of burns. Wear heat-protective gloves.

ATTENTION: Hot! Risk of burns. Wear safety glasses and heat‐protectivegloves.

ATTENTION: System and adhesive pressurized. Relieve system pressure.Failure to observe can result in serious burns.

CAUTION: Non-observance can result in damage to the equipment oraccessories.

Safety Instructions1‐12


This page intentionally left blank.

Introduction 2‐1


Section 2

Introduction

Intended UseThe LA 825 / LA 825 RC applicators - subsequently also referred to asApplicators - have been specially designed for the application of water-basedadhesives (PVAC) - subsequently referred to as Adhesive. They can be usedfor non‐contact adhesive application.

Any other use is considered to be unintended. The manufacturer is not liablefor personal injury or property damage resulting from unintended use.

Intended use includes observing the manufacturer’s prescribed operating,maintenance and service regulations.

The product described here is to be operated, serviced and maintained onlyby persons who are familiar with the product and who have been informed ofthe potential hazards.

The applicable rules for the prevention of accidents as well as any othergenerally recognized safety regulations and occupational health regulationsare to be observed.

Unintended Use - Examples -

The applicators may not be used under the following conditions:

� In a defective system environment

� In a potentially explosive atmosphere

� When the housing is open or protective equipment is removed

� In surroundings which do not correspond to the unit's Degree of

Protection

� With unauthorized modifications.

� The applicators may not be used to process the following materials:

� Explosive and flammable materials

� Materials sensitive to pressure

� Food products.

Introduction2‐2


Safety Instructions

Prior to installation and initial operation of the system, it is essential to readand follow the safety instructions.

The general safety instructions are enclosed as an annex to thedocumentation folder or they are a section of this manual.

The specific safety instructions are part of this manual.

Residual Risks

Nordson knows of no residual risks.

General InformationThe electrically controlled applicators are designed for the application ofwater‐based adhesives. They are particularly suited to the fast, intermittent,non‐contact application of adhesive.

After switching on the power to the coils inside the applicator, the nozzlestem is raised, thus opening the nozzle. When the power is switched off, aspring forces the nozzle stem down, closing the nozzle.

The stem stroke can be adjusted by means of a dial which can even beturned during operation.

A mounting bracket is available which can secure the applicator in practicallyall working positions.

Updated Parts List

The mounting brackets described in this section relate to standard mountingbrackets where reference is not made to any other units. Individualapplications require individual solutions. In such cases, please contactNordson.

Refer to the updated Parts List which is packed with your equipment.

For further questions, please contact Nordson.

Introduction 2‐3


Description of FunctionsThe following figure illustrates the basic method of operation of an applicatorwithin a complete system.

Adhesive is to be applied to a substrate (7). The transport belts (8) conveythe substrates. When the leading edge of a substrate reaches the photo cell(10), the beam of light sent is reflected and the program is started. Thecontroller compiles all the data according to the speed of the productionmachine. The encoder (4) is mechanically connected to the transportequipment via a gear and supplies one pulse per mm. The control unitevaluates all the data and establishes the point at which the applicators (5)must be activated.

The adhesive pump (12) is connected to the compressed air supply (1). Itoperates continuously and pumps the adhesive from the adhesive reservoir (11) to the applicators (5).

A current between 0‐20 mA is supplied from the control unit (3) to theproportional pressure control valve (2). The strength of the current isdependent on the speed of the production machine. The strength of thecurrent determines how far the proportional pressure control valve (2) shouldbe opened and the regulator (9) opens accordingly. The adhesive flows tothe applicators (5) and is applied to the substrate. The length of theapplication is defined by the control unit program.

Introduction2‐4


Functioning (contd.)

Electrical Features

Compressed air

Adhesive

1

2

3

4

5

6

7

8

9

10

12

11

O615

Fig. 2‐1 Principle drawing

1 Compressed air connection

2 Proportional valve

3 Control unit

4 Encoder

5 Applicator

6 Adhesive track

7 Substrate

8 Transport belt

9 Adhesive pressure controllerLA380

10 Photo cell

11 Adhesive container

12 Adhesive pump LA300

Introduction 2‐5


FunctioningWhen a peak voltage is applied to the magnetic coil in the applicator, thenozzle stem in the module moves from its home position, thus opening thenozzle. A holding voltage retains the nozzle stem in this position. When theholding voltage is switched off, a pretensioned spring moves the nozzle stemback and closes the opening. There is also the option of an applicator with an LED. The LED lights up whenpeak/holding voltage or peak/holding current is applied to the applicator,causing the nozzle to open.

Components

LA 825

O800

5 4 3 2 1

6 7

8

Fig. 2‐2 Applicator LA 825

1 Electrical connection

2 Adhesive connection

3 Protective cap

4 Nozzle stem stroke adjustment

5 Module

6 Sleeve nut with nozzle

7 Fixing screw

8 LED (optional)

Introduction2‐6


LA 825 RC

O801

5 4 3 2 1

76

8

9

Fig. 2‐3 Applicator LA 825 RC



3 Protective cap


5 Module

6 Nozzle

7 Fixing screw

8 Nozzle cover

9 LED (optional)

Installation 3‐1

P/N 7156011_022013 Nordson Corporation LA 285 / LA 285 RC

Section 3

Installation

ATTENTION: Allow only qualified personnel to perform the following tasks.Observe and follow the safety instructions in this document and all otherrelated documentation.

ATTENTION: Disconnect power to the control unit before connecting thesolenoid valves. Failure to do so may result in death.

UnpackingUnpack carefully. Then check for damage caused during transport. Reusepackaging materials or dispose of properly according to local regulations.

The applicator is fully preassembled at the factory (Refer to Components inSection Introduction).

The applicator LA 825 is supplied with a stem seat but no nozzle. The nozzlemust be ordered separately

LA 825 RC applicators are delivered with a nozzle, since the stem seat isintegrated in the nozzle.

TransportThe applicator is a high precision, valuable part. Handle very carefully!Protect the nozzle from damage, e.g. with the original packaging.

StorageDo not store outside! Protect from humidity and dust. Do not lay unit on thenozzle. Protect the nozzle from damage, e.g. by placing it in the originalpackaging.

DisposalWhen your Nordson product has exhausted its purpose and/or is no longerneeded, dispose of it properly according to local regulations.

Installation3‐2

P/N 7156011_02 2013 Nordson CorporationLA 285 / LA 285 RC

InstallingDue to possible self‐vibrations caused by intermittent operation, theapplicator should be installed as firmly as possible.

The transmission of vibrations from the equipment to the applicator should beavoided as much as possible.

The guns should be installed in an easily accessible location because theyneed to be removed for cleaning and maintenance purposes.

NOTE: In general, a production machine is a machine in which Nordsonequipment for adhesive application is integrated (e.g. a packing machine).The term production machine means the same as parent machine which mayappear in other Nordson literature.

ConnectThe connections used most frequently are described in the following. Insome cases, e.g. for enclosed operation or under clean room conditions,deviations from these instructions may be necessary.

Material Lines

Remove the protective cap (3). Connect the material hose coming from thepressure container or pump to the adhesive connection (2) on the applicator.

Electrical

ATTENTION: Disconnect power to the control unit before connecting theelectrical lines. Failure to do so may result in death.

Connect the cordset cable from the control unit to the receptacle (1) on theapplicator.

Installation 3‐3


O802

LA 825 LA 825 RC5

42 31

65

42 31

Fig. 3‐1 Installing and connecting the applicator



3 Protective cap


5 Fixing screw

6 Nozzle cover

O621

1

Installation3‐4


Setting the Adhesive Quantity, LA 825 / LA 825 RC

The adhesive pattern is influenced by the adhesive pressure andadhesive quantity. The adhesive pressure is determined by thepump control unit according to the application speed.

The nozzle stem stroke adjustment (1) is used to properly set theadhesive quantity. Turn the nozzle stem stroke adjustmentcounterclockwise to increase the quantity of adhesive. Reducethe quantity of adhesive by turning clockwise.

Fig. 3‐2

NOTE: The default stem stroke setting is achieved by turning thenozzle stem stroke adjustment all the way down and then turningit back 12 clicks. The nozzle stem stroke adjustment should beturned back a minimum of 10 clicks and a maximum of 14 clicks.

NOTE: Increasing the stem stroke reduces the maximumadhesive pressure. When operating at high speeds, the length ofthe adhesive bead is increased and, therefore, requires greatercompensation.

Operation 4‐1


Section 4

Operation


General Adhesive Processing InstructionsNOTE: The following information is particularly important for the processingof adhesives but is also applicable to other materials:

� Always pre-test the product before applying it for its ultimate purpose.

� The surface to be bonded should be at room temperature and free of

dust, grease and moisture.

� The suitable material, optimum working conditions and possible

pre-treatment of the substrate must be determined by testing.

� Some substrates contain softeners and other components which may

become volatile later. Occasionally, surfaces are covered with wax,isolating oil, etc. The bonding may fail immediately or later ifpre-treatment/tests are not carried out.

NOTE: Observe any comment sheets concerning the process to the materialused.

Compatibility of Different Types of AdhesiveNOTE: Not all types of adhesive are compatible. The adhesive maydecompose if used incorrectly, resulting in equipment malfunction andfailure.

In our capacity as suppliers of applicators, we assume no liability for damageto equipment, hoses and applicators caused by the hardening of adhesivethrough improper handling.

In case of doubt and/or intended change of adhesive, please contact theadhesive supplier, us or one of our representatives.

Operation4‐2


Emergency ShutdownFind out about proper behavior in emergency situations and know thelocation and activation of EMERGENCY OFF operating elements installed inthe production area.

ATTENTION: Activate the EMERGENCY OFF switch in any emergencysituation.

1. Trigger the nearest EMERGENCY OFF element (EMERGENCY STOPbutton, EMERGENCY OFF ripcord or main switch with EMERGENCYOFF function).

2. Determine and remedy the cause of EMERGENCY OFF before switchingthe system on again.

Initial Startup1. Set the air pressure on the pump so that the max. hydraulic pressure is

not exceeded.

Applicator Max. hydraulic pressure

LA 825 20 bar (290 PSI)

LA 825 RC 23 bar (330 PSI)

NOTE: The applicators do not work at higher pressure.

2. Place a container underneath the applicator and switch on the controlunit.

3. Set the control unit such that the adhesive flows out of the applicatornozzle evenly and without any air bubbles.

4. Carry out test gluing and check the adhesive bead. If a thicker bead isrequired, the pressure can be increased but not in excess of themaximum hydraulic pressure.

CAUTION: Do not operate the applicator without adhesive, with insufficientworking pressure or when the nozzle is clogged. The applicator couldoverheat and destroy the magnetic coil.

Daily Startup1. Check whether there is sufficient adhesive in the reservoir.

2. Release the air pressure for the pump.

Daily Shutdown1. Shut off the compressed air supply to the pump (reduce to 0 bar).

2. Close the nozzle orifices of the LA 825 applicator with silicone paste(Nordson P/N 311642).

3. Close the nozzle orifices of the LA 825 RC applicator with a siliconecover (Nordson P/N 7302596), filled with a few drops of water.

Maintenance 5‐1


Section 5

Maintenance


The applicator is easy to maintain and, in general, maintenance-free. Undernormal conditions, all the components have a long service life.

ATTENTION: Disconnect power supply!

ATTENTION: Stop the adhesive supply!

ATTENTION: When possible, always wear protective gloves when carryingout the work.

Always observe the following basic points:

� Ensure that the material to be applied is clean and filtered.

� Individual operating conditions and different application material require a

corresponding minimum effort for maintenance.

� Do not use metallic, sharp-edged tools to clean the outside of the

equipment, e.g. nozzle tips, only use soft brushes.

� When carrying out repair or maintenance work, keep the working space

as well as the applicator to be repaired as clean as possible.

� Polluted applicators should be thoroughly purged when possible. This is

possible particularly when the nozzle stem or material nozzle need to bereplaced.

� The applicators should not remain installed for any important

maintenance work but be removed from the machines.

� Depressurize the material supply lines beforehand.

Maintenance5‐2


Preventive Maintenance

Cleaning Applicator

It is not necessary to clean the applicator if air is prevented from entering intothe hydraulic system and coming into contact with the adhesive. If thisoccurs, however, the adhesive starts to solidify after approx. 30 minutes. Theprecise time varies according to the adhesive used. Blocked nozzle orificesor guns can be cleaned easily at any time.

NOTE: Do not disassemble an applicator in which adhesive has solidified! Itis highly likely this would damage sensitive components.

CAUTION: The electrical connection may not come into contact with water!This could damage the equipment!

We recommend immersing the applicator in warm water for 1 - 2 days todissolve the adhesive. Repeat the process several times, if necessary. If theapplicator still cannot be disassembled, return it to us for repair.

Regular Maintenance

We recommend purging the applicators with water twice a year. Theapplicators should always be kept clean, residual adhesive and dirt beingremoved daily.

Maintenance 5‐3


Disassembling Applicator LA 825

ATTENTION: Disconnect the power supply.

ATTENTION: The system and material are pressurized. Shut off thecompressed air supply! Otherwise, there is a considerable risk of injury.

Refer to illustration 5‐1.

1. Prepare a vessel with water.

2. Ensure that the working area and all the tools are clean.

NOTE: Foreign particles can damage gaskets and seal fits causing leaks.

3. Place a container under the applicator.

4. Detach the adhesive hose from the adhesive connection (1). Seal theadhesive hose with adhesive tape or plugs to prevent adhesive fromescaping.

5. Release both fixing screws (10).

6. Remove the sleeve nut (9).

7. Remove the stem seat (8).

8. Remove the O‐ring (7) from the stem seat.

9. Remove the nozzle stem (6) and compression spring (5) from theapplicator.

10. Extract the stem stroke adjustment (3) from the applicator.

11. Clean all parts with water.

NOTE: The magnetic coil and electrical connection cannot be removed.

NOTE: The stem stroke adjustment cannot be disassembled any further.


Maintenance5‐4


O623

10

9

8

7

6

5

4321

Fig. 5‐1 Disassembling Applicator LA 825

1 Hose connection

2 Protective cap


4 Casing

5 Compression spring

6 Nozzle stem

7 O‐ring

8 Stem seat

9 Tube nut

10 Fixing screw

Maintenance 5‐5


Disassembling applicator LA 825 RC

ATTENTION: Disconnect the power supply.

ATTENTION: The system and material are pressurized. Shut off thecompressed air supply! Otherwise, there is a considerable risk of injury.

Refer to illustration 5‐2.

1. Prepare a vessel with water.

2. Ensure that the working area and all the tools are clean.

NOTE: Foreign particles can damage gaskets and seal fits causing leaks.

3. Place a container under the applicator.

4. Detach the adhesive hose from the adhesive connection (1). Seal theadhesive hose with adhesive tape or plugs to prevent adhesive fromescaping.

5. Release both fixing screws (9).

6. Unscrew the nozzle (8).

7. Remove the O‐ring (7) from the nozzle.

8. Remove the nozzle stem (6) and compression spring (5) from theapplicator.

9. Extract the stem stroke adjustment (3) from the applicator.

10. Clean all parts with water.

NOTE: The magnetic coil and electrical connection cannot be removed.

NOTE: The stem stroke adjustment cannot be disassembled any further.


Maintenance5‐6


9

10

8

7

6

5

4321

O803

Fig. 5‐2 Disassembling applicator LA 825 RC

1 Hose connection

2 Protective cap


4 Casing

5 Compression spring

6 Nozzle stem

7 O-ring

8 Nozzle

9 Fixing screw

10 Nozzle cover

Maintenance 5‐7


Assembling Applicator LA 825Refer to figure 5‐1.

1. Install the O‐ring (7) on the stem seat (8).

2. Insert the compression spring (5) on the nozzle stem (6) and slide thenozzle stem into the applicator.

3. Screw the stem seat into the applicator.

4. Screw the stem stroke adjustment (3) into the applicator and tightenusing a wrench.

NOTE: The default stem stroke setting is achieved by turning the stem strokeadjustment all the way down and then turning it back 12 clicks.

5. Insert the nozzle in the sleeve nut (9) and screw the sleeve nut firmly tothe housing.

Assembling Applicator LA 825 RCRefer to figure 5‐2.

1. Install the O‐ring (7) on the nozzle (8).

2. Insert the compression spring (5) on the nozzle stem (6) and slide thenozzle stem into the applicator.

3. Screw the nozzle with nozzle cover (10) into the applicator.

4. Screw the stem stroke adjustment (3) into the applicator and tightenusing a wrench.

NOTE: The default stem stroke setting is achieved by turning the stem strokeadjustment all the way down and then turning it back 12 clicks.

CAUTION: If the stem stroke adjustment is not turned far enoughcounterclockwise, the nozzle stem may be damaged.

Maintenance5‐8


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Troubleshooting 6‐1


Section 6

Troubleshooting


The applicators are easy to maintain and generally maintenance‐free. Whenused for their intended purpose, all the elements have a long service life.

ATTENTION: Disconnect power supply!

ATTENTION: Stop the adhesive supply!

ATTENTION: When possible, always wear protective gloves when carryingout the work.

Always observe the following basic points:

� Ensure that the material to be applied is clean and filtered. The control air

should also be clean when supplied to the equipment.

� Individual operating conditions and different application material require a

corresponding minimum effort for maintenance.

� Do not use metallic, sharp-edged tools to clean the outside of the

equipment, e.g. nozzle tips, only use soft brushes.

� When carrying out repair or maintenance work, keep the working space

as well as the applicator to be repaired as clean as possible.

� Polluted applicators should be thoroughly purged when possible. This

applies particularly when a nozzle stem, sealing element or materialnozzle needs to be replaced.

� The applicators should not remain installed for any important

maintenance work but be removed from the machines.

� Stop the pressure and material supply lines beforehand.

Troubleshooting6‐2


NOTE: Disassembly Instructions Refer to Section 5

Problem Possible cause Corrective action

Applicator doesnot apply any glue

Operating pressure toohigh

Check operating pressure of hydraulic system. If thepressure is higher than 20 bar (290 PSI) in the case ofthe LA 825, or higher than 23 bar (330 PSI) in the caseof the LA 825 RC models, the nozzle stem may notopen. Reduce the pressure.

Hardened adhesive Remove the stem seat or nozzle, the nozzle stem andthe stem stroke adjustment from the applciator andcheck for any residual adhesive. Clean the elementsunder cold, running water.NOTE: Never use sharp or metallic tools for cleaning.They may damage the metallic parts.

Stem stroke too large Reduce the stem stroke by turning the stem strokeadjustment. To do this, switch the applicator off and oncontinuously while turning the stem stroke adjustmentclockwise.

Nozzles clogged Clean nozzles


Adhesive dripsfrom the nozzle

Hardened adhesive on thestem seat, in the nozzle oron the nozzle stem.

Remove the stem seat or nozzle, the nozzle stem andthe stem stroke adjustment from the applciator andcheck for any residual adhesive. Clean the elementsunder cold, running water.NOTE: Never use sharp or metallic tools for cleaning.They may damage the metallic parts.

Nozzle stem, stem seat ornozzle worn

Replace the nozzle stem, nozzle seat or nozzle.


Adhesiveapplication longerthan that set oncontrol unit

Applicator polluted Disassemble the applicator and check for adhesiveresidue. Clean the elements under cold, runningwater.NOTE: Never use sharp or metallic tools for cleaning.They may damage the metallic parts.

Parts 7‐1


Section 7

Parts

IntroductionThe parts in this section are divided into the following columns:

Item — Identifies the parts shown, available from Nordson.

Part — Nordson spare part number for each available part shown in theillustration. A series of hyphens (‐ ‐ ‐ ‐ ‐) in the Parts column means thatthe part cannot be ordered separately.

Description— The name of the part and, when appropriate, thedimensions and other properties. The dots in the Description columnillustrate the relationship between assemblies, subassemblies andindividual parts.

Quantity— The quantity required per unit, assembly or subassembly.The abbreviation ar (as required) is used to designate that items arestated in drum sizes or that the quantity required per assembly is a factorof the product version or the model.

NOTE: The texts are available only in English.

Updated Parts List

Please observe that your unit may differ slightly from the description or fromcertain details in the manual. Refer to the updated Parts List which is packedwith your equipment.

Parts7‐2


Spare Parts

Applicator LA 825

O805

4

3

2

1

Fig. 7‐1 Gun LA 825

Parts 7‐3


Applicator LA 825 Standard (without LED)

Item Part Description Qty Remarks

‐ 7303130 Gun, LA 825 1/2‐20 UNF 1

1 7303131 Module complete, LA 825 1/2‐20 UNF 1 See Module, Gun LA 825

2 7304127 Kit, needle & seat, LA 825 wear resistant 1 See Kit, Needle & Seat,Gun LA 825 WearResistant

3 375297 Sleeve nut 1

4 ‐ Nozzle/gasket 1 Not included: See Kit,Nozzle, Gun LA 825

Applicator LA 825 LED


‐ 7303140 Gun, LA 825 LED 1/2‐20 UNF 1

1 7303141 Module complete, LA 825 LED 1/2‐20 UNF 1 See Module, Gun LA 825

2 7304127 Kit, needle & seat, LA 825 wear resistant 1 See Kit, Needle & Seat,Gun LA 825 WearResistant

3 375297 Sleeve nut 1

4 ‐ Nozzle/gasket 1 Not included: See Kit,Nozzle, Gun LA 825

Parts7‐4


Applicator LA 825 RC

21

O806


Parts 7‐5


Applicator LA 825 RC Standard (without LED)


‐ 7303153 Gun, LA 825 RC w. nozzle 0.30 1

1 7303151 Module complete, LA 825 RC 1/2‐20 UNF) 1 See Module, GunLA 825 RC

2 7304129 Kit, needle & nozzle, LA 825 RC, 0.30mm 1 See Kit, Needle & Nozzle,Gun LA 825 RC


‐ 7303154 Gun, LA 825 RC w. nozzle 0.40 1

1 7303151 Module complete, LA 825 RC 1/2‐20 UNF 1 See Module, GunLA 825 RC



‐ 7303155 Gun, LA 825 RC w. nozzle 0.50 1

1 7303151 Module complete, LA 825 RC 1/2‐20 UNF) 1 See Module, GunLA 825 RC


Applicator LA 825 RC LED


‐ 7303163 Gun, LA 825 RC LED w. nozzle 0.30 1

1 7303161 Module complete, LA 825 RC LED 1/2‐20 UNF 1 See Module, GunLA 825 RC










Parts7‐6


Module, Applicator LA 825

O807

32 1

4

Fig. 7‐3 Module, Applicator LA 825

Parts 7‐7


Module, Applicator LA 825 Standard (without LED)


‐ 7303131 Module complete, LA 825 1/2‐20 UNF 1

1 7302333 Adjustable pole piece, LA 825xx 1

2 372570 Hosenipple 1/8BSP‐1/2‐20 UNF 1

3 311551 Protection plug, 1/2‐20 UNF 1

4 Screw allenhead, M4x12, DIN912, A2 2

Module, Gun LA 825 LED


‐ 7303141 Module complete, LA 825 LED 1/2‐20 UNF 1





Parts7‐8


Module, Applicator LA 825 RC

O808

32 1

4

Fig. 7‐4 Module, Applicator LA 825 RC

Parts 7‐9


Module, Applicator LA 825 RC Standard (without LED)


‐ 7303151 Module complete, LA 825 RC 1/2‐20 UNF 1





Module, Applicator LA 825 RC LED


‐ 7303161 Module complete, LA 825 RC LED 1/2‐20 UNF 1





Parts7‐10


Filter Assembly, Applicator LA 825 / LA 825 RC

1

1

3

2

O632

Fig. 7‐5 Filter Assembly, Applicator LA 825 / LA 825 RC


‐ 7300530 Filter assy, 75 mesh, 1/8 BSP‐1/2 20 UNF 1

1 ‐ Filter subassy, 1/8 BSP‐1/2 20 UNF 1

2 7300532 Filter cartridge, 75 mesh, stainless 1

3 7300531 O‐ring, 10.82x1.78 1

Parts 7‐11


Kits

Kit, Nozzle, Applicator LA 825

2

1

O809

Fig. 7‐6 Kit, Nozzle, Applicator LA 825


1 - 2 374760 Bead nozzle long engagement diam. 0.3 mm incl. 1 gasket 1

374762 Bead nozzle long engagement diam. 0.35 mm incl. 1 gasket 1






NOTE: Parts 374760 to 374772 contain one nozzle and one seal each.

2 374755 Set gasket replacement kit, 10 pcs 1

Parts7‐12


Kit, Nozzle Stem & Seat, Applicator LA 825 Wear Resistant

O810

8

7

6

5

Fig. 7‐7 Kit, Nozzle Stem & Seat, Applicator LA 825 Wear Resistant


‐ 7304127 Kit, Needle & seat LA 825 wear resistant 1

5 375293 Compression spring 1

6 ‐ Needle LA825 1

7 ‐ O‐ring LA825xx 1

8 ‐ Seat 1

(7) 7302799 Kit, O‐ring LA825xx, 5 pcs 5

Parts 7‐13


Kit, Nozzle Stem & Nozzle, Applicator LA 825 RC

O811

7

6

5

4

3

Fig. 7‐8 Kit, Nozzle Stem & Nozzle, Applicator LA 825 RC


‐ 7304129 Kit, needle & nozzle, LA825RC, 0.30 1



3 375293 Compression spring 1

4 ‐ Needle LA825RC 1

5 ‐ O‐ring LA825xx 1

6 7302883 Nozzle, 0.3 mm, LA825RC incl. 1 O‐ring and 1 nozzle cover 1

7302884 Nozzle, 0.4 mm, LA825RC incl. 1 O‐ring and 1 nozzle cover 1

7302885 Nozzle, 0.5 mm, LA825RC incl. 1 O‐ring and 1 nozzle cover 1

7 ‐ Nozzle cover 1

NOTE: Parts 7302883 to 7302885 contain one O-ring and onenozzle cover each.

(5) 7302799 Kit, O‐ring LA825xx, 5 pcs 5

(7) 7302596 Kit, nozzle cover, 15 pcs 15

Parts7‐14


Kit, Guide, Applicator LA 825 RC (optional)

2

1

O812

Fig. 7‐9 Kit, Guide, Applicator LA 825 RC (optional)


1 ‐ 2 7302844 Guide for LA825RC, Kit (optional) 1

1 ‐ Product guide 1

2 ‐ Screw, M5x8, DIN915, A2 1

Parts 7‐15


Accessories

Cordset

Item Part Description Qty

‐ 7302530 Cable, LogiComm/ LA404‐2 to LA 825, 2.5 m 1

‐ 7302531 Cable, LogiComm/ LA404‐2 to LA 825, 5 m 1

‐ 7302330 Cable, LogiComm/ LA404‐2 to LA 825, 7m 1

‐ 7302532 Cable, LogiComm/ LA404‐2 to LA 825, 10 m 1

‐ 7301617 Cable, splitter to drive two LA 825 / LA 825 RC guns at onechannel

1

Hoses


‐ 312255 High pressure hose 0.15 m / 0.5 ft 1


















Parts7‐16


Cable harnesses


‐ 7302978 Harness, 2m, hp, rem.conn.box & LA404‐2 1

‐ 7302979 Harness, 3m, hp, rem.conn.box & LA404‐2 1

‐ 7302980 Harness, 4.5m, hp, rem.conn.box & LA404‐2 1

‐ 7303190 Harness, 2m, hp, LogiComm, GD200S 1

‐ 7303191 Harness, 3m, hp, LogiComm, GD200S 1

‐ 7303192 Harness, 4.5m, hp, LogiComm, GD200S 1

‐ 7303187 Harness, 2m, hp, LogiComm, incl. GD Sensor 1

‐ 7303188 Harness, 3m, hp, LogiComm, incl. GD Sensor 1

‐ 7303189 Harness, 4.5m, hp, LogiComm, incl. GD Sensor 1

Adhesive Connection Adapter


‐ 7300017 Reducer, 1/2‐20 female ‐ 7/16‐20 male 1

Technical Data 8‐1


Section 8

Technical Data

General DataApplicator type: LA 825 / LA 825 RC

Peak voltage durationLA 404‐2:LogiComm (universal applicatorswitching amplifier):WM 408 driver board:

1.8 ms

0.8 ms at 1.8 A1.6 ms

Holding voltage (VDC) / Holdingcurrent (A):LA 404‐2:LogiComm (universal applicatorswitching amplifier):WM 408 driver board:

5 VDC

0.6 A0.6 A

Adhesive connection: 1/2‐20 UNF

Viscosity range*1: To 1500 mPas(Linear to 1200 mPas)

Max. adhesive pressure 42 bar (610 psi)

Permitted pH-value of adhesive 4 - 7

Minimal up‐time*2:

LA 404‐2:LogiComm (universal applicatorswitching amplifier):WM 408 driver board:

1 ms

0.8 ms1 ms

Minimal down‐time*2:

LA 404‐2:LogiComm (universal applicatorswitching amplifier):WM 408 driver board:

1 ms

1 ms1 ms

Max. adhesive working pressure:LA 404‐2:LogiComm (universal applicatorswitching amplifier):WM 408 driver board:

LA 825: LA 825 RC:20 bar 23 bar

18 bar 23 bar18 bar 23 bar

Continuous cycle rate (max.):LA 404‐2:LogiComm (universal applicatorswitching amplifier):WM 408 driver board:

250 Hz

250 Hz250 Hz

IP class IP 65

NOTE: *1 The linearity is dependent on the reology of the adhesive. Theviscosity is measured according to the Brookfield method.

Technical Data8‐2


NOTE: *2 The time is heavily dependent on the adhesive and only serves as aguideline value. The minimum uptime is related to the bead length, theminimum downtime to the distance between two beads (the stitch).

NOTE: The data and descriptions contained in our product information areintended to provide a general overview of our products and services. Most ofthe data was obtained through testing in our internal testing environment, soit may not apply under other circumstances. Although we invest every effortto provide data and information that is accurate, we will assume no liability,guarantee or warranty whatsoever for the correctness, completeness orcurrency.

1 bar = 14.5 psi = 105Pa 0.4536 kg = 0.45 kg

9 x °C / 5 + 32 = °F 25.4 mm = 1 in.

1 cps = 1 cP = 1 mPa s = 1 mNs/m2

Technical Data 8‐3


Dimensions

Applicator LA 825

O813

Fig. 8‐1 Applicator LA 825

Technical Data8‐4


Applicator LA 825 RC

O814


Applicators LA 825 / LA 825 RC - Welcome to -...

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