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Pressure Controller LA 302 Manual P/N 7119797A English Issued 06/06 NORDSON BENELUX MAASTRICHT THE NETHERLANDS www.nordson.com

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Page 1: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Pressure Controller LA 302

Manual P/N 7119797A− English −Issued 06/06

NORDSON BENELUX • MAASTRICHT • THE NETHERLANDSwww.nordson.com

Page 2: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

This equipment is regulated by the EuropeanUnion under WEEE Directive 2002/96/EC.

See www.nordson.com for information abouthow to properly dispose of this equipment.www.nordson.com

Order numberP/N = Order number for Nordson products

NoticeThis is a Nordson Corporation publication which is protected by copyright. Original copyright date 2006.No part of this document may be photocopied, reproduced, or translated to another language without theprior written consent of Nordson Corporation. The information contained in this publication is subject to

change without notice.

� 2006 All rights reserved.

TrademarksAccuJet, AeroCharge, AquaGuard, Asymtek, Automove, Autotech, Baitgun, Blue Box, CF, CanWorks, Century,

Clean Coat, CleanSleeve, CleanSpray, Control Coat, Cross-Cut, Cyclo-Kinetic, Dispensejet, DispenseMate, Durafiber,Durasystem, Easy Coat, Easymove Plus, Econo-Coat, EFD, ETI, Excel 2000, Flex-O-Coat, FlexiCoat, Flexi-Spray,

Flow Sentry, Fluidmove, FoamMelt, FoamMix, Helix, Heli-flow, Horizon, Hot Shot, Isocoil, Isocore, Iso-Flo, JR, KB30,Kinetix, Little Squirt, Magnastatic, MEG, Meltex, Microcoat, MicroSet, Millennium, Mini Squirt, Moist-Cure, Mountaingate,

MultiScan, Nordson, OmniScan, OptiMix, Package of Values, Patternview, Plasmod, PluraFoam, Porous Coat,PowderGrid, Powderware, Prism, Pro-Flo, ProLink, Pro-Meter, Pro-Stream, PRX, RBX, Rhino, S. design stylized, Saturn,

SC5, Seal Sentry, Select Charge, Select Coat, Select Cure, Slautterback, Smart-Coat, Solder Plus, Spectrum,Spray Squirt, Spraymelt, Super Squirt, Sure Coat, Tela-Therm, Trends, Tribomatic, UniScan, UpTime, Veritec, Versa-Coat,

Versa-Screen, Versa-Spray, Walcom, Watermark and When you expect more. are registered trademarks of Nordson Corporation.

AeroDeck, AeroWash, Apogee, ATS, Auto-Flo, AutoScan, BetterBook, Chameleon, CanNeck, Check Mate, Colormax,Control Weave, Controlled Fiberization, CoolWave, CPX, DuraBlue, Dura−Coat, Dura−Screen, Dry Cure, E-Nordson,

EasyClean, Eclipse, Equi=Bead, ESP, Fill Sentry, Fillmaster, Gluie, iControl, iFlow, Ink-Dot, Iso-Flex, iTrend, KVLP,Lacquer Cure, Maxima, MicroFin, MicroMax, Minimeter, Multifil, Origin, PermaFlo, PluraMix, Powder Pilot, Powercure,

Primarc, ProBlue, Process Sentry, PurTech, Pulse Spray, Ready Coat, Select Series, Sensomatic, Shaftshield, SheetAire,Spectral, Spectronic, Speed−Coat, Speedking, Spray Works, Summit, Sure Brand, Sure Clean, Sure Max, Swirl Coat,

Tempus, ThruWave, Tracking Plus, Trade Plus, Universal, VersaBlue, Vista, Web Cure and 2 Rings (Design) are trademarks of Nordson Corporation.

Windows is a registered trademark of Microsoft Corporation.

Page 3: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Table of Contents I

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Table of Contents

Nordson International O-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Europe O-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Distributors in Eastern & Southern Europe O-1. . . . . . . . . . . . . . . . Outside Europe / Hors d’Europe / Fuera de Europa O-2. . . . . . . . . . .

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

Safety 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Qualified Personnel 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regulations and Approvals 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Personal Safety 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Safety 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation and Electrical Connections 1-3. . . . . . . . . . . . . . . . . . . . . . Operation 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Less-obvious Dangers 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Danger of Burns 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance / Repair 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Liquid Adhesive 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hot Melt Material 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Liquid Adhesive 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hot Melt Material 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Adhesives 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermoplastic Hot Melt Material 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . Action in the Event of a Malfunction 1-9. . . . . . . . . . . . . . . . . . . . . . . .

Description 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intended Use 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unintended Use - Example - 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . Residual Risks 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Updated Bill of Material 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description of Functions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 4: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Table of ContentsII

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Installation 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transport 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unpacking 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setup 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disposal 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Connections 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Line Voltage 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Encoder 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Liquid Adhesive Gun 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Proportional Pressure Control Valve 3-4. . . . . . . . . . . . . . . . . . . . . . Accessories 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial Startup 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Daily Startup 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Daily Shutdown 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switching Off in an Emergency 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . Settings 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Type of Setting (Mode Switch A) 4-2. . . . . . . . . . . . . . . . Setting Minimum Speed (Potentiometer E) 4-3. . . . . . . . . . . . . . . . Setting Minimum Pressure (Potentiometer C) 4-4. . . . . . . . . . . . . . Setting Maximum Pressure (Potentiometer D) 4-4. . . . . . . . . . . . . Switching from Automatic to Manual Mode (Mode Switch B) 4-5.

Display / LEDs 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Display 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LED’s 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Settings Record 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Repair 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LA 320 and Accessories 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Updated Bill of Material 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Data 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting Arrangement 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Encoder Input 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Proportional Pressure Control Valve Output 7-2. . . . . . . . . . . . . . . Liquid Adhesive Gun 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 5: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

O-1Introduction

� 2005 Nordson CorporationAll rights reserved

NI_EN_L−1105

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 45-43-66 1133 45-43-66 1123

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

Italy 39-02-904 691 39-02-9078 2485

Netherlands 31-13-511 8700 31-13-511 3995

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

Finishing 47-22-65 6100 47-22-65 8858

Poland 48-22-836 4495 48-22-836 7042

Portugal 351-22-961 9400 351-22-961 9409

Russia 7-812-11 86 263 7-812-11 86 263

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

Finishing 44-161-495 4200 44-161-428 6716

Nordson UV 44-1753-558 000 44-1753-558 100

Distributors in Eastern & Southern Europe

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

Page 6: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

O-2 Introduction

� 2005 Nordson CorporationAll rights reserved

NI_EN_L-1105

Outside Europe / Hors d’Europe / Fuera de Europa

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

� Pour toutes informations sur représentations de Nordson dans votrepays, veuillez contacter l’un de bureaux ci-dessous.

� Para obtener la dirección de la oficina correspondiente, por favordiríjase a unas de las oficinas principales que siguen abajo.

Contact Nordson Phone Fax

Africa / Middle EastDED, Germany 49-211-92050 49-211-254 658

Asia / Australia / Latin America

Pacific South Division,USA

1-440-685-4797 −

JapanJapan 81-3-5762 2700 81-3-5762 2701

North AmericaCanada 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

Page 7: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Safety 1-1

SIG05_EN_A_0100� 2000 Nordson Corporation

Section 1Safety

IntroductionRead and follow these safety instructions. Task- and equipment-specificwarnings, cautions, and instructions are included in equipmentdocumentation where appropriate.

Make sure all equipment documentation, including these instructions, isaccessible to persons operating or servicing equipment.

Qualified PersonnelEquipment owners are responsible for making sure that Nordson equipmentis installed, operated, and serviced by qualified personnel. Qualifiedpersonnel are those employees or contractors who are trained to safelyperform their assigned tasks. They are familiar with all relevant safety rulesand regulations and are physically capable of performing their assignedtasks.

Regulations and ApprovalsMake sure all equipment is rated and approved for the environment in whichit is used. Any approvals obtained for Nordson equipment will be voided ifinstructions for installation, operation, and service are not followed.

Page 8: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Safety1-2

SIG05_EN_A_0100 � 2000 Nordson Corporation

Personal SafetyTo prevent injury follow these instructions.

� Do not operate or service equipment unless you are qualified.

� Do not operate equipment unless safety guards, doors, or covers areintact and automatic interlocks are operating properly. Do not bypass ordisarm any safety devices.

� Keep clear of moving equipment. Before adjusting or servicing movingequipment, shut off the power supply and wait until the equipmentcomes to a complete stop. Lock out power and secure the equipment toprevent unexpected movement.

� Relieve (bleed off) hydraulic and pneumatic pressure before adjusting orservicing pressurized systems or components.

� Obtain and read Material Safety Data Sheets (MSDS) for all materialsused. Follow the manufacturer’s instructions for safe handling and useof materials, and use recommended personal protection devices.

� To prevent injury, be aware of less-obvious dangers in the workplacethat often cannot be completely eliminated, such as hot surfaces, sharpedges, energized electrical circuits, and moving parts that cannot beenclosed or otherwise guarded for practical reasons.

Page 9: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Safety 1-3

SIG05_EN_A_0100� 2000 Nordson Corporation

Fire SafetyTo avoid a fire or explosion, follow these instructions.

� Do not smoke, weld, grind, or use open flames where flammablematerials are being used or stored.

� Do not heat materials to temperatures above those recommended bythe manufacturer. Make sure heat monitoring and limiting devices areworking properly.

� Provide adequate ventilation to prevent dangerous concentrations ofvolatile particles or vapors. Refer to local codes or your material MSDSfor guidance.

� Clean, maintain, test, and repair equipment according to the instructionsin your equipment documentation.

� Use only replacement parts that are designed for use with originalequipment. Contact your Nordson representative for parts informationand advice.

Installation and Electrical Connections� Prior to installation, check intended location and surrounding area for

any potential hazards during operation.

� All electrical, pneumatic, gas and hydraulic connections and installationof all system components may only be carried out by qualifiedpersonnel. Observe installation instructions for components andaccessories.

� Equipment must be properly grounded and fused according to the ratedcurrent consumption (see ID plate).

� Cables which run outside the system must regularly be checked forwear or damage.

� Power supply wire gauge and insulation must be sufficient to handlerated current consumption.

� Cables must never be squeezed or pinched. Do not locate cables orhoses in high traffic areas.

WARNING: Failure to install the system properly, and especially failure toensure electrical, pressurized and high pressure feed connections are madecorrectly may result in serious injury or death.

Page 10: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Safety1-4

SIG05_EN_A_0100 � 2000 Nordson Corporation

OperationThe system should only be operated when it is in working order. It shouldonly by operated by qualified persons following all regulations valid for liquidadhesive systems.

� Never allow the system to be operated by personnel under the influenceof substances which reduce their reaction times, or who are not able tooperate the equipment for physical reasons.

� Prior to each startup of the system, check protection and warningdevices and make sure they are fully functional. Do not operate theequipment if these devices are not functioning properly.

� When the removal of safety equipment is required for installation,maintenance or repair, it must be reconnected immediately uponcompletion of the work.

� In a humid environment, only equipment featuring a correspondingprotection may be operated.

� Do not operate the system in an explosive environment.

� Keep parts of the body and clothing away from rotating parts. Do notwear loose articles of clothing when operating or servicing equipmentwith rotating parts. Remove wrist watches, rings, necklaces or similarjewelry and pin up or cover long hair before performing any work on orwith the equipment. The wearing of protective gloves may provehazardous in certain circumstances where rotating parts are present andmay therefore be forbidden.

� To carry out measurements on the substrate or system components,switch off parent machine and/or system and wait until the equipmentcomes to a standstill.

� Never point guns or applicator nozzles at yourself or other persons.

Page 11: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Safety 1-5

SIG05_EN_A_0100� 2000 Nordson Corporation

Less-obvious DangersWARNING: An operator or service technician working with the equipmentshould be aware of the less-obvious dangers that often cannot becompletely minimized at production sites:

� Pressurized system components

� Exposed surfaces of the unit which cannot be practically safeguarded.They may be hot and take time to cool after the unit has been operating.

� The possibility that electrical potentials may remain in the system afterthe system was de-energized

� Liquid adhesive vapors or hot melt material and vapors

� Hydraulically or pneumatically operated system components

� Uncovered winding parts

Danger of Burns

Contact with hot melt materials or hot areas of the unit may produce asevere skin burn.

WARNING: Hot! Risk of burns. Wear heat-protective clothing, safetygoggles, and/or heat-protective gloves depending on the symbols shown.

� Be extremely careful when using hot melt material. Even solidifiedmaterial may still be very hot.

� Always wear protective clothing which safely covers all exposed parts ofthe body.

In case of burns:

� Immediately cool affected skin areas using cold, clean water.

� Do not forcefully remove hot melt material from the skin.

� Immediately seek medical attention.

Page 12: Pressure Controller LA 302emanuals.nordson.com/adhesives/English_Manuals/7119797.pdfOutside Europe / Hors d’Europe / Fuera de Europa For your nearest Nordson office outside Europe,

Safety1-6

SIG05_EN_A_0100 � 2000 Nordson Corporation

Maintenance / RepairAllow only qualified personnel to perform the procedures described in thisdocument. Work should only be carried out on a completely depressurizedsystem, following all safety procedures.

WARNING: Some voltage is still present in the control cabinet even afterequipment has been turned off at the main switch. Complete the followingsteps prior to maintenance or repair:

� Disconnect external power supply.

� Lock out external power supply.

� Check no voltage is present.

� Ground and short.

� Cover nearby live sections.

� Secure pneumatically- and hydraulically-operated equipment againstuncontrolled movement.

� Only use genuine Nordson parts.

Liquid AdhesiveNOTE: Depending on the configuration of the liquid adhesive applicationsystem, high pressure may remain between application head and pressureregulator or pump even after the system has been switched off using themain switch or the emergency stop. This especially applies to multi−hoseconfigurations between pumps and application heads.

� Prior to maintenance and repair work it is therefore essential to ensurethat all liquid adhesive application system components aredepressurized as follows:

1. Release input pressure in front of pump by shutting off customercompressed air supply.

2. Release any remaining system pressure behind the pumps bymanually operating the application heads.

� Switch off system electrically.

If liquid adhesive application system is left idle for extended periods (e.g.overnight or long breaks) Nordson recommends applying Vaseline to theapplication head nozzles to prevent them from drying out and becomingblocked as a result.

Hot Melt Material� Follow the specific instructions provided in this manual to relieve the

system pressure in the entire unit.

� Always use tools with insulated handles when removing or installingcomponents.

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Safety 1-7

SIG05_EN_A_0100� 2000 Nordson Corporation

CleaningNOTE: Always refer to the manufacturer’s Material Safety Data Sheet ormaterial information sheet before working with any cleaning fluids.

WARNING: Never clean any aluminum part or flush any system usinghalogenated hydrocarbon fluids. Examples of common halogenatedhydrocarbons are: dichloromethylene, 1,1,1-trichloroethylene, andperchloroethylene. Halogenated hydrocarbons may react violently withaluminum parts.

WARNING: Fire, open flame, and smoking are prohibited when cleaningfluids are used. Observe all explosion prevention regulations. Cleaningfluids may only be heated using temperature-controlled andexplosion-protected heaters.

� Never use an open flame to clean the system or its components.

� Ensure sufficient room ventilation to draw off vapors.

Liquid Adhesive� Check that (warm) water can be used to clean the liquid adhesive

system components, possibly with the addition of householdwashing−up liquid. If this is not possible, use only the cleaning fluidstated in the liquid adhesive manufacturer’s information. If themanufacturer recommends heating the cleaner, note the flash point.

� Disposal must be according to the waste key in the DIN Safety DataSheet. Liquid adhesives or residue, solvent or separating agents mustnot be released into open waterways. In the case of a leak or spillage,contain liquid and if necessary use an absorbant material e.g. sawdustto soak it up; then proceed according to the relevant waste disposalregulations.

� If the liquid adhesive application system is to be idle for an extendedperiod, the entire system should be flushed and outlets sealed withVaseline. Warm water is usually used to flush application systems withwhich water based liquid adhesives are processed.

� If the liquid adhesive manufacturer specially recommends a flushingagent, the manufacturer’s safety and disposal details must be followed.

Hot Melt Material� Use only cleaning fluids designed or intended to be used with the hot

melt material being used in the unit. Never use paint fluids under anycircumstances.

� Note the flash point of the cleaning fluid used. Only use a controlledheating method to heat fluids.

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Safety1-8

SIG05_EN_A_0100 � 2000 Nordson Corporation

Liquid AdhesivesAs there is a wide variety of liquid adhesives available with differentcompositions and characteristics, it is impossible here to give an exhaustivelist of safety notes reflecting the typical characteristics of liquid adhesives.The use of liquid adhesives in Nordson’s liquid adhesive applicationsystems therefore requires reference to the liquid adhesive manufacturer’sdocuments beforehand.

Information relating to safety aspects e.g. concerning solvent content,hazards and countermeasures in the event of liquid adhesive coming intocontact with skin or mucous membranes are contained in the technical datasheets and the DIN Safety Data Sheets from the manufacturer.

NOTE:

� It may be necessary to refer to the manufacturer’s notes on the use ofmaterials from a third party. These may be required for processing aliquid adhesive, but hazards arising from their use are not necessarilymentioned by the manufacturer of the liquid adhesive.

� Liquid adhesives may still give off vapors when they are processedcorrectly. The smell produced can cause some annoyance. This isespecially true where liquid adhesives are used that contain solvent,thus requiring the use of breathing equipment e.g. a filter.

� If the prescribed processing conditions are not followed, harmfuldecomposition products may develop. Therefore, the vapors must beremoved.

� Wash hands well before breaks and when work is finished.

� If liquid adhesive comes into contact with eyes or mucous membranes,rinse well with water − especially the eyes. Change damp clothes, andseek medical advice if it is swallowed.

� If solvents or separating agents are used to process a liquid adhesive,follow the safety and disposal information from the manufacturer.

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Safety 1-9

SIG05_EN_A_0100� 2000 Nordson Corporation

Thermoplastic Hot Melt MaterialNOTE: Always refer to the material manufacturer’s Material Safety DataSheet (MSDS) or material information sheet before working with any hotmelt material.

� Ensure the work area is adequately ventilated.

� Do not exceed recommended processing temperatures. Doing socreates a danger to personnel due to decomposition of the material.

Action in the Event of a MalfunctionIf a system or any equipment in a system malfunctions, shut off the systemimmediately and perform the following steps:

� Disconnect and lock out system electrical power. Close hydraulic andpneumatic shutoff valves and relieve pressures.

� Identify the reason for the malfunction and correct it before restarting thesystem.

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Safety1-10

SIG05_EN_A_0100 � 2000 Nordson Corporation

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Description 2-1

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Section 2Description

Intended UsePressure controllers in the series LA 302 can be used to control proportionalpressure control valves and/or glue application pumps for Nordson liquidadhesive guns. They are designed to process cold glue and hot meltadhesive. The two integrated outlets for electropneumatic adhesive gunsallow continuous gluing. LA 302 units can be combined with Nordsonpattern controllers for intermittent gluing.

NOTE: Cold glue and other adhesives are referred to as glue in thismanual. The pressure controller is referred to as controller.

Unintended Use - Example -The unit may not be operated in a potentially explosive atmosphere.

Residual RisksWARNING: Do not touch the contacts after disconnecting the mains plug.Capacitive charge from the electronic components causes the controller toretain residual voltage, which could result in a slight electrical shock uponcontact. The capacitive charge is discharged after approx. 60 seconds.

WARNING: Glue escapes from the adhesive gun when the solenoid valvesare triggered. Risk of splashing. Wear safety goggles. Do not programduring adhesive gun assembly.

The risk is particularly high during:

� Production machine startup

� Reverse mode

� Manual mode

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Description2-2

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

IntroductionThe LA 302 is a user-friendly pressure controller that controls proportionalpressure control valves and/or glue application pumps as a factor of themachine speed and that triggers electropneumatic adhesive guns forcontinuous gluing.

The unit is operated with easy-to-use switches and potentiometers inconjunction with LEDs and a four-digit seven-segment display.

Updated Bill of MaterialPlease observe that your Nordson equipment may differ slightly from thatdescribed in the manual or certain information provided in it. Refer to theupdated Bill of Material which is packed with your equipment.

Description of FunctionsThe following principle drawing demonstrates gluing with the LA 302.

Adhesive is to be applied to a substrate (9). The production machine, alsocalled the parent machine, transports the substrate on a conveyor beltunder the liquid adhesive gun (6). When the production machine hasreached the minimum speed, the LA 302 begins gluing.

NOTE: In general, a production machine refers to a machine in whichNordson equipment for adhesive application is integrated (e.g. a packingmachine). The term means the same as ”parent machine”, which mayappear in other Nordson literature.

A gear box mechanically links the encoder (4) to the production machinetransport equipment. The encoder is needed to determine the parentmachine speed, and it supplies a pulse for each mm of the covered path.

When the production machine has reached the set minimum speed, thesolenoid valve on the adhesive gun switches, allowing the constantcompressed air to enter the adhesive gun and the nozzle to open.

Depending on the speed of the production machine, current of 0 to 20 mA issupplied to the proportional pressure control valve (2). The current causesthe position of the diaphragm in the adhesive pressure regulator (12) tochange. The glue in the container (13) is fed to the adhesive pressureregulator (12) by the pump. The glue reaches the adhesive guns (6) witheither low or high pressure, depending on the diaphragm setting.

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Description 2-3

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

1

2

3

4

12

14

13 10

5

7

9

8

6

1115

Electrical Components

Compressed air

Adhesive

Fig. 2-1 Principle drawing

1 Compressed air supply withmaintenance unit

2 Proportional pressure controlvalve

3 Pressure controller LA 3024 Encoder5 Power cable solenoid valve

6 Liquid adhesive gun7 Adhesive pattern8 Glue line9 Substrate

10 Transport belt

11 Uncoated adhesive pattern12 Adhesive pressure regulator

LA 38013 Adhesive container14 Adhesive pump LA 30015 Compressed air hose

NOTE: Instead of the container pump with adhesive pressure regulatorshown here, a diaphragm pump, pressure container or similar could also beconnected.

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Description2-4

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Features

� 4-digit, 7-segment display, 5 LEDs and 2 mode switches for operationand control

� Automatic machine speed-dependent pressure control

� 1 potentiometer for setting the minimum speed (1 m/min to 300 m/min)at which pressure control should commence

� Production speed display (max. 600 m/min)

� Display of minimum and maximum outlet current for the proportionalpressure control valves (0 - 20 mA)

� 2 potentiometers each for setting the required current (0 - 20 mA) or 0 - 10 VDC for each proportional pressure control valve

� 1 LED to indicate that the speed has fallen below the minimum speed

� 1 LED to indicate both automatic and manual mode

� 1 LED to indicate fault/short-circuited electropneumatic adhesive guns(at > 1.6 A)

� 1 LED each to indicate interrupted proportional valves or proportionalpressure control valves that are not connected

� 2 outputs for connecting two proportional pressure control valves

� 2 outputs for connecting electropneumatic adhesive guns

� 1 output for connecting an encoder

� Integrated power supply with automatic line voltage adaptation between100 VAC and 240 VAC.

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Description 2-5

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Front

1 2 3 87654 119

13

15

12

10

14

23 22 21 20

17

24

19

18

16

29 27 2628 25

Fig. 2-2

1 Display (7-segment display)2 Setting for pressure display,

proportional pressure controlvalve 2

3 Setting for pressure display,proportional pressure controlvalve 1

4 Setting for minimum speeddisplay

5 Setting for production speeddisplay

6 Mode switch (A)7 LED (1) for automatic and manual

mode8 Symbol for automatic mode (left

switch position)9 Switch automatic/manual mode

(B)10 Central position (without function)

11 Symbol for manual mode (rightswitch position)

12 Symbol for adhesive gun13 Alarm LED (2) for adhesive gun 14 Alarm symbol for adhesive gun15 Alarm symbol for proportional

pressure control valve 1 16 Alarm LED (4) for proportional

valve 1 17 Symbol for pressure setting of

proportional pressure controlvalve 1 and 2

18 Alarm LED (5) for proportionalvalve 2

19 Alarm symbol for proportionalpressure control valve 2

20 Symbol for maximum pressure

21 Potentiometer (G) for maximumpressure (proportional pressurecontrol valve 2)

22 Potentiometer (D) for maximumpressure (proportional pressurecontrol valve 1)

23 Symbol for pressure settings ofproportional pressure controlvalve 1 and 2

24 Potentiometer (F) for minimumpressure (proportional pressurecontrol valve 2)

25 Potentiometer (C) for minimumpressure (proportional pressurecontrol valve 1)

26 Symbol for minimum pressure27 Potentiometer (E) for minimum

speed28 LED (3) to indicate that speed

has fallen below minimum speed29 Symbol for minimum speed

setting

NOTE: Beginning here, mode switches and potentiometers on the front ofthe pressure controller will be designated alphabetically as mode switch /potentiometer (A), (B), (C), ... beginning at the top left and moving to theright. The LEDs are designated LED (1), LED (2), ... beginning at the topleft and moving to the right.

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Description2-6

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Back

3 52 4

10 9 67

1

8

11

Fig. 2-3

1 Ventilation slit2 Output for adhesive gun 1 3 Symbol for adhesive guns4 Output for adhesive gun 2

5 Mains switch6 Unit port7 Encoder symbol8 Encoder input

9 Proportional pressure controlvalve output

10 Proportional pressure controlvalve output

11 Pressure output symbol

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Installation 3-1

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Section 3Installation

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

TransportTransport the unit such as to prevent damage. Do not throw the unit. Usesuitable packing material, e.g. Styrofoam and sturdy cardboard. Refer toTechnical Data for weight.

Protect the unit from humidity, dust, jolts and vibrations.

UnpackingUnpack the unit carefully to prevent damage. Then check for any damagecaused during shipping.

Save the packing material for later use. Otherwise reuse the material ordispose of it properly according to local regulations.

SetupProtect the unit from humidity, excessive dust accumulation and vibrations.Do not block ventilation slits (1, Fig. 3-1).

Refer to Technical Data for dimensions.

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Installation3-2

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

21

Fig. 3-1 LA 302

1 Ventilation slit 2 Mains switch

RemovalSwitch off the power supply (2). Then detach all electrical connections.

StoragePack the pressure controller in suitable packing material, e.g. Styrofoamand sturdy cardboard. Protect from humidity, dust and extreme temperaturefluctuations (condensation).

DisposalDispose of properly according to local regulations.

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1

1

Installation 3-3

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Electrical Connections

Line VoltageWARNING: The pressure controller LA 302 is designed to accommodatethe voltage stated on the unit port (1). It adapts to any voltage within thegiven range.

1. Plug the power cable into the unit port (1) on the back of the pressurecontroller.

2. Connect the power cable to the shockproof socket.

Fig. 3-2 Electrical connections

1 Unit port

EncoderThe adhesive pressure is controlled as a factor of the production machinespeed. Thus an encoder (1) must be connected. A gear box connects it tothe production machine, and it delivers a pulse per mm.

Fig. 3-3 Electrical connections

1 Encoder

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1

1

Installation3-4

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Electrical Connections (contd.)

Liquid Adhesive GunA solenoid valve triggered by the LA 302 opens and closes the adhesiveguns. The solenoid valve is located on the adhesive gun and is electricallyconnected to the pressure controller.

Fig. 3-4 Electrical connections

1 Liquid adhesive guns

Proportional Pressure Control ValveThe glue for the adhesive guns can be fed e.g. by a connected containerpump via a pressure regulator. The pressure regulator is controlled(pressure rises as production speed increases) via a proportional pressurecontrol valve supplied by one of the pressure controller outputs. Twoproportional pressure control valves can be connected to these outputs.

Fig. 3-5 Electrical connections

1 Proportional pressure controlvalve

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Installation 3-5

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Accessories

Required accessories Sleeve

Encoder with cable 8

Power cable for proportional valve 9, 10

Adhesive gun with cable 2, 4

Power cable 6

24

910 8 6

Fig. 3-6

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Installation3-6

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Initial StartupNOTE: The compressed air used should be filtered and dry. If necessary, awater separator or a pneumatic dehumidifier should be used to prevent icefrom forming.

It is imperative to perform the following steps in the stated order for initialstartup.

The stated position numbers refer to Figure 3-7.

1. Connect the compressed air to the air conditioning unit (1).

2. Stop compressed air supply on the air conditioning unit.

3. Connect the compressed air supply to the container pump (14).

4. Connect the compressed air supply to the adhesive gun (15).

5. Connect the proportional valve compressed air outlet (2) to the adhesivepressure regulator (12).

6. Connect the adhesive outlet of the container pump to the pressureregulator.

7. Connect the glue outlet of the adhesive pressure regulator to theadhesive guns (8).

8. Electrically connect the LA 302 to the adhesive gun (5).

9. Electrically connect the LA 302 to the proportional pressure control valve(2).

10. Electrically connect the LA 302 to the encoder (4), and mechanicallyconnect the production machine and encoder through the gear box.

11. Start the production machine and determine the lowest possibleproduction speed.

12. Switch on the applicator LA 302 with the mains switch (5, Fig. 2-3).

NOTE: Mode switches and potentiometers on the front of the pressurecontroller will be designated alphabetically as mode switch / potentiometer(A), (B), (C), ... beginning at the left and moving to the right. The LEDs aredesignated LED (1), LED (2), ... beginning at the top left and moving to theright.

13. Set the minimum speed (lowest speed at which the adhesive gunnozzles open) to the desired initial speed (but not < 4 m/min) using thepotentiometer (E) on the LA 302. LED (3) should go off.

14. Slowly increase the compressed air on the air conditioning unit(1, Fig. 3-7).

15. Run the system at minimum production speed and set the minimumpressure for proportional pressure control valve 1 with potentiometer (C)or the minimum pressure for proportional pressure control valve 2 withpotentiometer (F) such that the glue bead is even and cohesive.

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Installation 3-7

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

16. Run the system at maximum production speed and set the maximumpressure for proportional pressure control valve 1 with potentiometer (D)or the maximum pressure for proportional pressure control valve 2 withpotentiometer (G) such that the glue bead is even and cohesive(production machine speed may need to be throttled). Lock the setting.

NOTE: If the quality of the glue bead is not satisfactory, continue to adjustthe minimum speed setting on the production machine and on the LA 302and adjust the respective minimum pressure until the glue bead is correct. Ifthe production machine is run at a speed below the minimum speed set onthe LA 302, pressure control does not occur.

1

2

3

4

12

14

13 10

5

7

9

8

6

1115

Electrical components

Compressed air

Adhesive

Fig. 3-7

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Installation3-8

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

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Operation 4-1

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Section 4Operation

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

WARNING: Risk of splashing. Glue escapes from the adhesive gun whenthe solenoid valves are triggered. Wear safety goggles. Do not programduring adhesive gun assembly.

The risk is particularly high during:

� Production machine startup

� Reverse mode

� Manual mode

NOTE: Mode switches and potentiometers on the front of the pressurecontroller will be designated alphabetically as mode switch / potentiometer(A), (B), (C), ... beginning at the top left and moving to the right. The LEDsare designated LED (1), LED (2), ... beginning at the top left and moving tothe right.

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1

LA 302

A

Operation4-2

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Daily StartupSwitch on mains switch (1).

Fig. 4-11 Mains switch

Daily ShutdownSwitch off mains switch.

Switching Off in an EmergencySwitch off mains switch.

SettingsThe pressure controller is operated with switches and potentiometers. Their functions are described in this section.

Selecting Type of Setting (Mode Switch A)The following parameters are set with mode switch (A):

� Measurement of production machine speed

� Minimum speed display

� Display of minimum and maximum pressure values (in mA) forproportional valves 1 and 2.

NOTE: All settings are also possible even if the mode switch is not moved.However, it is advisable to turn the mode switch to the respective position;otherwise the corresponding value will not appear in the display.

Fig. 4-2

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LA 302

A

LA 302

A

E 3

Operation 4-3

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

The LA 302 calculates the pressure values on the basis of the productionmachine speed. For the display to be correct:

� The encoder must be installed (Use suitable gear box)

� The maximum speed may not exceed 600 m/min.

Turn the mode switch (A) to the top position to display the productionmachine speed.

NOTE: To check, change the production machine speed and observe thedisplay.

Fig. 4-3

Setting Minimum Speed (Potentiometer E)Potentiometer (E) is used to set the minimum speed. Pressure is notcontrolled below this speed. If pneumatic valves are connected, theirnozzles are not opened below the minimum speed. If the productionmachine falls below the speed set on the LA 302, LED (3) lights up.

1. Reduce the production machine speed to the desired lowest speed (butnot < 1 m/min).

2. Set mode switch (A) to Minimum speed.

3. Set the minimum speed with potentiometer (E) on the LA 302.

4. Lock the setting with the fixing device on potentiometer (E).

NOTE: Ensure that the production machine speed is always somewhathigher than the set minimum speed.

Fig. 4-4NOTE: It is advisable to make a note of the values to be able to laterreplicate production (Refer to Settings Record Form at the end of thissection).

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LA 302

C

F

A

LA 302

A D

G

Operation4-4

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Setting Minimum Pressure (Potentiometer C)Potentiometer (C) is used to set the minimum pressure for proportionalpressure control valve 1. The minimum pressure is the pressure required forthe glue bead to be even and cohesive at the lowest possible productionmachine speed.

1. Slow down the production speed to the desired minimum speed (but not< 1 m/min).

2. Set mode switch (A) to Pressure display.

3. Set the current for proportional pressure control valve 1 withpotentiometer (C) such that the desired bead quality is achieved.

4. Lock the setting with the fixing device on potentiometer (C).

NOTE: Potentiometer (F) is used to set the minimum pressure forproportional pressure control valve 2. Do this by moving mode switch (A) tothe bottom setting.

Fig. 4-5NOTE: It is advisable to make a note of the values to be able to laterreplicate production (Refer to Settings Record Form at the end of thissection).

Setting Maximum Pressure (Potentiometer D)Potentiometer (D) is used to set the maximum pressure for proportionalpressure control valve 1. The maximum pressure is the pressure requiredfor the glue bead to be even and cohesive at the greatest possibleproduction machine speed.

1. Increase the production machine speed to the desired maximum speed(but not > 600 m/min).

2. Set mode switch (A) to Pressure display.

3. Set the current for proportional pressure control valve 1 withpotentiometer (D) such that the desired bead quality is achieved.

4. Lock the setting with the fixing device on potentiometer (D).

NOTE: Potentiometer (G) is used to set the maximum pressure forproportional pressure control valve 2. Do this by moving mode switch (A) tothe bottom setting.

Fig. 4-6NOTE: It is advisable to make a note of the values to be able to laterreplicate production (Refer to Settings Record Form at the end of thissection).

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LA 302

B

LA 302

1

Operation 4-5

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Switching from Automatic to Manual Mode (Mode Switch B)Mode switch (B) is used to switch to the following modes:

Position Meaning

Left Automatic operation:Pressure controller operates with the set values.

Center No operation:Pressure is being controlled, but any pneumatic valvesconnected are not being controlled. Since the nozzles donot open, no glue flows out. This position is useful e.g.when filling material, etc.

Right Manual mode:Adhesive guns open and glue flows out. Pressure iscontrolled even when the production machine speedchanges. This switch position is intended to be used fortesting purposes.

Fig. 4-7

Display / LEDsA 7-segment display and 5 LEDs serve as the display elements.

DisplayThe display serves:

� To indicate the production machine speed

� To indicate the minimum speed (in setting mode)

� To indicate minimum and maximum pressure for the proportionalpressure control valves (in setting mode).

Fig. 4-8

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LA 302

4

231

5

Operation4-6

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

LED’sThe LEDs indicate the following:

LED Meaning

1 Illuminated in automatic mode when the required minimumspeed is exceeded; illuminated in manual mode.

2 Illuminated when one of the electropneumatic solenoid valves on the adhesive gun has short-circuited or when current > 1.6 A is flowing.

3 Illuminated when the production machine speed is below theminimum speed set on the LA 302.

4 Illuminated when proportional pressure control valve 1 is notconnected or the connection is interrupted.

5 Illuminated when proportional pressure control valve 2 is notconnected or the connection is interrupted.

Fig. 4-9

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Operation 4-7

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Settings RecordThis form can be used to keep a record of the essential productionparameters. Please make sufficient copies of form before filling out.

Production information:

Adhesive: Manufacturer

Processing temperature

Viscosity

Cleaning agent: Manufacturer

Flash point

Pressures: Operating air pressure in bar

Minimum pressure in mA for proportional pressure control valve 1

Maximum pressure in mA for proportional pressure control valve 1

Minimum pressure in mA for proportional pressure control valve 2

Maximum pressure in mA for proportional pressure control valve 2

Speeds: Lowest possible production machine speed

Highest possible production machine speed

Minimum speed set on LA 302

Motor/pump speed(s) ofadhesive feeding unit:

Remarks:

Form filled out by: Name

Date

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Operation4-8

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

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Maintenance 5-1

P/N 7119797A� 2006 Nordson Corporation LA 302Edition 06/06

Section 5Maintenance

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

MaintenanceThe unit requires no maintenance. Check all cables regularly for damage.Replace damaged cables immediately!

Troubleshooting

Problem Possible Cause Corrective Action Refer to

Unit notfunctioning

Mains plug not connected Connect mains plug Installation

Unit is not switched on Switch on unit Operation

Mains fuses defective Check mains fuses, replace ifnecessary

Repair

No glueapplication

Adhesive gun does not switch Adhesive gun solenoid valve notconnected to LA 302

Installation

Mode switch (B) not in left position Operation

No glueapplication, LED(3) illuminated

Production speed too low Increase production speed Operation

No glueapplication, LED(2) illuminated

Solenoid valve on adhesivegun defective

Replace adhesive gun Installation

Too little glueapplied, LED (4)and/or LED (5)illuminated

Proportional pressure controlvalve defective or notconnected

Replace or connect proportionalpressure control valve

Installation

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Maintenance5-2

P/N 7119797A � 2006 Nordson CorporationLA 302Edition 06/06

Troubleshooting (contd.)

Problem Possible Cause Corrective Action Refer to

Bead too thin atlow speed

Current for minimum pressuretoo low

Increase current Operation

Bead too thin athigh speed

Current for maximum pressuretoo low

Increase current Operation

Bead too thick atlow speed

Current for minimum pressuretoo high

Reduce current Operation

Bead too thick athigh speed

Current for maximum pressuretoo high

Reduce current Operation

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Maintenance 5-3

P/N 7119797A� 2006 Nordson Corporation LA 302Edition 06/06

RepairNOTE: Repairs to be performed by the customer are limited to replacingdefective fuses. Any other repair work should be performed by Nordsoncustomer service.

NOTE: Only original Nordson spare parts may be used.

Problem Possible Cause Corrective Action Refer to

Unit notfunctioning

Mains plug not connected Connect mains plug Installation

Unit is not switched on Switch on unit Operation

Mains fuses defective Check mains fuses, replace ifnecessary

Below

2

3

1

4

Fig. 5-1 Mains switch and fuses

1 Mains switch2 Fuse carrier slid into place

3 Fuse carrier 4 Cover for fuse compartment

NOTE: The fuse can be pressed out the side of the fuse carrier.

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Maintenance5-4

P/N 7119797A � 2006 Nordson CorporationLA 302Edition 06/06

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Parts 6-1

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Section 6Parts

IntroductionPlease contact the nearest Nordson facility to order parts. The followingparts lists and the illustrations contain a description of the parts and theirrespective designations.

LA 320 and Accessories

Updated Bill of MaterialPlease observe that your Nordson equipment may differ slightly from thatdescribed in the manual or certain information provided in it. Refer to theupdated Bill of Material which is packed with your equipment.

Part Description

7301662 Pressure controller LA 302

377188 Proportional pressure control valve with 1 outlet, with cable and reducing valve

377189 Proportional pressure control valve with 2 outlets, with cable and reducing valve

377228 Power cable for proportional pressure control valve, 5 m (needed for each outlet)

311433 Encoder

311453 Rubber-coated wheel for encoder

311454 Wear-resistant wheel for encoder

372500 Connecting cable for encoder, 5 m

371909 Connecting cable for encoder, 15 m

313365 Extension cable for encoder, 5 m

372441 Power cable for pneumatic adhesive guns, 5 m

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Parts6-2

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Fuse

Part Description

312158 Fuse 3.15 AT (for operating voltage 100 - 240 VAC)

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Technical Data 7-1

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Section 7Technical Data

General Data

Line voltage/frequency 100 - 240 VAC, 0.6 A, 50/60 Hz

Encoder Voltage: 24 VDCInput: NPNResolution: 1 pulse/mmInput cycle: 0 - 10 kHz

= 0-600 m/min

Current outputs for proportionalpressure control valves

2 x 0 - 20 mA and 0 - 10 VDCDisplay of open outputs by LED

Minimum speed Adjustable from 1-300 m/minHysteresis: +/− 0.5 m/min

Current output for pneumaticadhesive guns

1.4 AOvercurrent display 1.6 A by LED

IP degree of protection IP 20

Dimensions H: 135 mmW: 260 mmD: 240 mm

Weight 2 kg

Operating temperature 0 - 60 °C (32 - 140 °F)

Storage temperature -7 - 60 °C (20 - 140 °F)

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4 1

3 2

4 1

3 2

1 3

2

Technical Data7-2

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06

Connecting Arrangement

Encoder Input

PIN Function

1 Ground

2 +24 V

3 NPN

4 PE

Fig. 7-1 Encoder input

Proportional Pressure Control Valve Output

PIN Function

1 Ground 24 VDC

2 0-20 mA output

3 0-10 V output

4 +24 VDC

Fig. 7-2 Output to proportional pressure control valve

Liquid Adhesive Gun

PIN Function

1 + output

2 Not assigned

3 − output

PE

Fig. 7-3 Output to adhesive gun

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Technical Data 7-3

P/N 7119797A� 2006 Nordson Corporation LA 302Issued 06/06

Dimensions

Fig. 7-4 Dimensions

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Technical Data7-4

P/N 7119797A � 2006 Nordson CorporationLA 302Issued 06/06