LA 22 and LA 44 Glue Guns - Nordsonemanuals.nordson.com/adhesives/English_Manuals/321344.pdfLA 22 and LA 44 Glue Guns Customer Product Manual Part 321 344A NORDSON CORPORATION Duluth,

LA 22 and LA 44 Glue Guns

Customer Product ManualPart 321 344A

NORDSON CORPORATION � Duluth, Georgiawww.nordson.com

� 2001 Nordson CorporationAll rights reserved

321 344AIssued 12/01

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Nordson Corporation welcomes requests for information, comments and inquiries about its products. Generalinformation about Nordson can be found on the Internet using the following address: http://www.nordson.com.

Address all correspondence to:

Nordson CorporationAttn: Customer Service11475 Lakefield Drive

Duluth, GA 30097

Notice

This is a Nordson Corporation publication which is protected by copyright. Original copyright date 2001. No part of this document may be photocopied, reproduced, or translated to another language without the prior written

consent of Nordson Corporation. The information contained in this publication is subject to change without notice.

Trademarks

AccuJet, AquaGuard, Asymtek, Automove, Autotech, Blue Box, CF, CanWorks, Century, Clean Coat, CleanSleeve,CleanSpray, Compumelt, Control Coat, Cross-Cut, Cyclo-Kinetic, Dispensejet, DispenseMate, Durafiber, Durasystem,Easy Coat, Easymove Plus, Econo-Coat, EPREG, ETI, Excel 2000, Flex-O-Coat, FlexiCoat, Flexi-Spray, Flow Sentry,

Fluidmove, Fluidshooter, FoamMelt, FoamMix, Helix, Horizon, Hose Mole, Hot Shot, Hot Stitch, Isocoil, Isocore, Iso-Flo, JR,KB30, Little Squirt, Magnastatic, MEG, Meltex, MicroSet, Millenium, Mini Squirt, Moist-Cure, Mountaingate, MultiScan,

Nordson, OmniScan, Opticoat, Package of Values, PluraFoam, Porous Coat, PowderGrid, Powderware, Pro-Flo, ProLink,Pro-Meter, Pro-Stream, PRX, RBX, Ready Cost, Rhino, S. design stylized, Saturn, SC5, SCF, Select Charge, Select Coat,Select Cure, Shur-Lok, Slautterback, Smart-Coat, Spray Squirt, Spraymelt, Super Squirt, Sure-Bond, Sure Coat, System

Sentry, Tela-Therm, Trends, Tribomatic, UniScan, UpTime, Veritec, Versa-Coat, Versa-Screen, Versa-Spray, Watermark, andWhen you expect more. are registered trademarks – � – of Nordson Corporation.

ATS, Auto-Flo, AutoScan, BetterBook, Chameleon, CanNeck, Check Mate, CPX, Control Weave, Controlled Fiberization,EasyClean, Ebraid, Eclipse, Equi=Bead, Fillmaster, Gluie, Ink-Dot, Maxima, MicroFin, Minimeter, Multifil, OptiMix,

Pattern View, PluraMix, Primarc, Prism, Process Sentry, PurTech, Pulse Spray, Seal Sentry, Select Series, Sensomatic,Shaftshield, Spectral, Spectrum, Sure Brand, Swirl Coat, Vista, Walcom, and 2 Rings (Design)

are trademarks – � – of Nordson Corporation.

Loctite is a registered trademark of Loctite Corporation.

Table of Contents i


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Table of Contents

1. Safety 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Qualified Personnel 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Intended Use 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation and Electrical Connections 4. . . . . . . . . . . . . . . . . . . . . . .

Operation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Less-obvious Dangers 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Action in the Event of System Malfunction 5. . . . . . . . . . . . . . . . .

Maintenance/Repair 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Adhesives 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Overview 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Glue and Solvent Applications 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Water-Based Glues 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solvents 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard Features 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 22M and LA 22MEK Guns 9. . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 22MB Gun 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 44 Gun 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Installation 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring Diagram 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Setup 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Operation 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Startup 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

For Carton Folder/Gluers 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

For Folding or Mailing Machines 15. . . . . . . . . . . . . . . . . . . . . . . . .

Shutdown 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


Table of Contentsii


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6. Maintenance 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Cleaning 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Required Tools 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning System with Pump 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning System with Pressure Tank 19. . . . . . . . . . . . . . . . . . . . . . .

Changeover from LA 22M to LA 22MB 21. . . . . . . . . . . . . . . . . . . . . .

7. Parts 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Illustrated Parts List 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 22M and LA 22MEK Guns 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 22MB Gun 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 44 Gun 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Recommended Spare Parts 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 22M and LA 22MEK Guns Spare Parts List 30. . . . . . . . . . . .

LA 22MB Guns Spare Parts 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 44 Guns Spare Parts 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. Options 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TS 422 Tip Sealer 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing/Installing the Tip Sealer Slide 34. . . . . . . . . . . . . . . . . .

Shutting Off Individual Tip Sealers 35. . . . . . . . . . . . . . . . . . . . . . .

Mounting and Adjustment 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TSC 522 Tip Sealer Control Unit 36. . . . . . . . . . . . . . . . . . . . . . . . . . .

Automatic Operation 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manual Operation 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting and Connections 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TS 422 Tip Sealer Parts List 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9. Technical Data 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Controller Settings 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LA 22 and LA 44 Glue Guns(contd)

LA 22 and LA 44 Glue Guns 1


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WARNING: Allow only qualified personnel to perform thefollowing tasks. Follow the safety instructions in this documentand all other related documentation.

Safety instructions contained in this section and throughout thisdocument apply to tasks that may be performed with the liquid adhesiveapplication system components and the liquid adhesive used. It is veryimportant that these safety instructions are always followed. Failure to doso could result in personal injury, death and/or damage to the system orother equipment.

With this in mind, here are some basic safety recommendations:

� Read and become familiar with the Safety section prior to installing,operating maintaining or repairing the system.

� Read and follow the warnings which appear within the text and arerelated to specific tasks.

� Store this document within easy reach of personnel operating ormaintaining the system.

� Wear personal protective equipment such as safety goggles, glovesor respiratory equipment where this is required by peculiarities of thesystem and/or the material.

� Familiarize yourself with and follow all safety instructions prescribedby your company, general accident prevention regulations andgovernment safety regulations.

1. Safety

LA 22 and LA 44 Glue Guns2


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The following symbols are used to warn against dangers or possiblesources of danger. Become familiar with them! Failure to heed a warning could lead to personal injury, death and/or damage to the system or otherequipment.

WARNING: Failure to observe may result in personal injury,death, or equipment damage.

WARNING: Risk of electrical shock. Failure to observe mayresult in personal injury, death, or equipment damage.

WARNING: Disconnect equipment from the line voltage.

WARNING: Danger! High pressure. Wear safety goggles whenworking on a liquid adhesive application system.

WARNING: Risk of explosion or fire. Fire, open flames andsmoking prohibited.

WARNING: System and material pressurized. Releasepressure. Failure to observe may result in serious injury.

CAUTION: Failure to observe may result in equipmentdamage.

Safety Symbols



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”Qualified personnel” is defined here as individuals who thoroughlyunderstand the equipment and its safe operation, maintenance andrepair. Qualified personnel are physically capable of performing therequired tasks, familiar with all relevant safety rules and regulations andhave been trained to safely install, operate, maintain and/or repair theequipment. It is the responsibility of the company operating theequipment to see that its personnel meet these requirements.

The system is designed and intended to be used only for the purposedescribed in the Description section. Uses not in accordance with thatsection or as described in this document are considered unintended usesand not in accordance with governing regulations.

WARNING: Use of this equipment in ways other thandescribed in this document may result in personal injury, death,or equipment damage.

The following actions of the owner or operator of the system are some,but not all, examples of unintended use which would permit Nordson toclaim it is not responsible for personal injury or property damage arisingfrom such unintended use:

� Unapproved modifications or changes to the system

� Failure to comply with the safety instructions

� Failure to comply with the instructions concerning installation, use,operation, maintenance or repair, or when these tasks are carried outby unqualified personnel

� Use of inappropriate or incompatible foreign materials or auxiliaryequipment

� Failure to observe workplace safety rules or regulations issued bygovernment authorities or safety councils.

Qualified Personnel

Intended Use



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� Prior to installation, check intended location and surrounding area forany potential hazards during operation.

� All electrical, pneumatic, gas and hydraulic connections andinstallation of all system components may only be carried out byqualified personnel. Observe installation instructions for componentsand accessories.

� Equipment must be properly grounded and fused according to therated current 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.

� Check liquid adhesive feed hoses, screwed connections andcompressed air lines regularly for leaks. These are to be replaced atthe first signs of cracks, brittleness etc. Release system pressurecompletely beforehand.

WARNING: Failure to install the system properly, andespecially failure to ensure electrical, pressurized and highpressure feed connections are made correctly may result inserious injury or death.

The system should only be operated when it is in working order. It shouldonly by operated by qualified persons following all regulations valid forliquid adhesive systems.

� Never allow the system to be operated by personnel under theinfluence of substances which reduce their reaction times, or who arenot able to operate 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 correspondingclass of protection may be operated.

� Do not operate the system in an explosive environment.

Installation and ElectricalConnections

Operation



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� 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 onor with the equipment. The wearing of protective gloves may provehazardous in certain circumstances where rotating parts are presentand may 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.

Less-obvious Dangers

WARNING: An operator or service technician working with theequipment should be aware of the less-obvious dangers thatoften cannot be completely minimized at production sites:

� Pressurized system components

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

� Liquid adhesive vapors

� Hydraulically or pneumatically operated system components

� Uncovered winding parts

Action in the Event of System Malfunction

If the system malfunctions, switch it off immediately.

� Turn the main switch off, or use emergency stop switch or similarsafety feature as provided.

� After equipment has come to a standstill and before reoperating it,have it repaired by qualified personnel.



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Allow only qualified personnel to perform the procedures described in thisdocument. Work should only be carried out on a completelydepressurized system, following all safety procedures.

NOTE: Depending on the configuration of the liquid adhesive applicationsystem, high pressure may remain between application head(s) andpressure regulator or pump/s even after the system has been switchedoff using the main switch or the emergency stop. This especially appliesto multi-hose configurations between pump/s and application head/s.

� Prior to maintenance and repair work it is therefore essential toensure that 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.

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

� Switch off system electrically.

WARNING: Some voltage is still present in the control cabineteven after equipment has been turned off at the main switch.Complete the following steps prior to maintenance or repair:

1. Disconnect external power supply.

2. Lock out external power supply.

3. Check no voltage is present.

4. Ground and short.

5. Cover nearby live sections.

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.

� Only use genuine Nordson parts.

Maintenance/Repair



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NOTE: Always refer to the liquid adhesive manufacturer’s MaterialSafety Data Sheet or material information sheet before working with anycleaning fluids.

WARNING: Never clean any aluminium part or flush anysystem using halogenated hydrocarbon fluids. Examples ofcommon halogenated hydrocarbons are: dichloromethylene,1,1,1-trichloroethylene and perchlorethylene. Halogenatedhydrocarbons may react violently with aluminium parts.

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

� Check that (warm) water can be used to clean the liquid adhesivesystem 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.

� Ensure sufficient room ventilation to draw off vapors.

WARNING: Fire, open flames and smoking are prohibitedwhen cleaning fluids are used. Observe all explosion preventionregulations. Cleaning fluids may only be heated usingtemperature controlled and explosion-protected heaters.

� 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.sawdust to soak it up; then proceed according to the relevant wastedisposal regulations.

� 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 systemswith which water-based liquid adhesives are processed.

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

Cleaning



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As there is a wide variety of liquid adhesives available with differentcompositions and characteristics, it is impossible here to give anexhaustive list of safety notes reflecting the typical characteristics ofliquid adhesives. The use of liquid adhesives in Nordson’s liquid adhesiveapplication systems therefore requires reference to the liquid adhesivemanufacturer’s documents 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 technicaldata sheets and the DIN Safety Data Sheets from the manufacturer.

NOTE:

� Always refer to the manufacturer’s Material Safety Data Sheet ormaterial information before working with any liquid adhesives.

� 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 mucousmembranes, rinse well with water—especially the eyes. Changedamp clothes, and seek medical advice if it is swallowed.

� 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.sawdust to soak it up; then proceed according to the relevant wastedisposal regulations.

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

Liquid Adhesives

4222001A



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The LA 22 and LA 44 glue guns are designed to apply spots or lines ofglue in a wide range of applications where a non-contact system isrequired.

Water-Based Glues

The LA 22M, LA 22MB, and LA 44 glue guns are designed to applywater-based glues (200–650 cps).

Solvents

The LA 22MEK is designed to apply solvents and water-based glues(200–650 cps).

CAUTION: Risk of equipment damage. The LA 22MEK is theonly gun (in the LA 22 and LA 44 series) designed for use withsolvents. Do not use solvents in the LA 22M, LA 22MB, or theLA 44 gun.

LA 22M and LA 22MEK Guns� cone plunger and seat� operates up to 250 cycles per second� nozzle range from 0.2 mm to 1.0 mm� uses ELC, TCU, APC, MPC, PDC, LA 4100, and LA 4400 controllers� optional TS 422 tip sealer

LA 22MB Gun� ball plunger and seat� high frequency� nozzle range from 0.2 mm to 1.0 mm� uses ELC, TCU, APC, MPC, PDC, LA 4100, and LA 4400 controllers� optional TS 422 tip sealer

Fig. 1 Typical LA 22 Gun

2. Overview

Glue and SolventApplications

Standard Features

4222006A



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LA 44 Gun� ball plunger and cone seat� smaller than the LA 22MB� operates up to 800 cycles per second� nozzle range from 0.2 mm to 1.0 mm� uses ELC, TCU, APC, MPC, and LA 4100 controllers� glue fed through top or front of the gun� allows multiple guns to be mounted on a single manifold� built-in tip sealer

Fig. 2 Typical LA 44 Gun

4222016A

LA22

25.4mm(1.0 in.)

41.66mm(1.62 in.)

82.55mm(3.25 in.)

7/16 – 20

Glue IN

Nozzle for:LA 22M and LA 22MEK7/16 in. hex., cone version

LA 22MB3/8 in. hex, ball version

Fig. 3 LA 22 Gun Dimensions

3. Installation

Dimensions



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4222005A

84mm(3.31 in.)

Glue IN

62mm(2.45 in.)

27mm(1.06 in.)

Air IN

LA44

Fig. 4 LA 44 Gun Dimensions

4222010A

68 mm (2.7 in.)

90 mm(3.5 in.)

22 mm(0.87 in.) 83 mm (3.26 in.)

Fig. 5 TS 422 Tip Sealer Dimensions



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4222009A

A

A

LA 44 Gun

1

Red – Power

Black – Ground

432

White – Ground

Rear View A – A

Fig. 6 LA 44 Wiring Diagram

CAUTION: Be careful not to over-tighten the armature nut orthe ball plunger will be damaged. Before doing any work on theglue gun, refer to Maintenance.

CAUTION: Do not operate the LA 22 or LA 44 glue gunswithout liquid in the gun. The plunger will be damaged.

1. When routing the hoses for glue and air tubes for tip sealers, makesure that all hoses and tubes are the same length between the gunsand the manifold.

2. When using a pump with a glue drum, make sure the dip tube is wellsubmerged in the glue.

3. When using a pressure tank, remove the lid and fill the tank with glue,making sure that the dip tube is well submerged in the glue.

Wiring Diagram

4. Setup



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1. Check the glue level in the tank or drum.

2. Set the air pressure for the pump or the tank to the required gluepressure.

3. Position the guns on the cross bar and clamp into position.

4. Set the height of each gun so that the product can pass under thenozzle (or guide or tip sealer when used).

NOTE: The guns can be used with the nozzle tip up to 6–10 mm(0.2–0.4 in.) away from the surface to be glued. Depending on thesurface of the product, it may be necessary to alter the ON and OFFcompensation values to maintain the accuracy of the glue beadposition as the nozzle gets further away from the product.

NOTE: In general, the faster the speed, the closer the nozzle needsto be to the surface. For best performance, make sure that the gunnozzle is as close to the product as possible.

5. Run some product through the machine to make sure that it runsthrough without snagging. Adjust the height of the gun(s) ifnecessary.

6. Set the controller to give the required glue line dimensions. Refer tothe controller product manual.

NOTE: For multi-gun applications where the size of the glue spot iscritical, it may be necessary to adjust the gun opening (the gapbetween the plunger and the armature) to obtain the same size spotsfrom all the guns.

7. Set the gap between the plunger and the armature.

NOTE: If using the LA 22M, LA 22MB, or LA22MEK gun, loosen theadjusting locking set screw on the front of the gun.

a. While the gun is energized and glue is flowing, turn the armaturenut clockwise until the glue flow becomes a slow drip.

CAUTION: Be careful not to over-tighten or the ball plunger willbe damaged.

b. After the glue flow stops, rotate the nut counterclockwise one-thirdof a turn (2 flats of the hex nut).

5. Operation

Startup



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c. De-energize the gun.

d. Test the adjustment.

NOTE: If using the LA 22 gun, lock the set screw position.

8. Prime the guns for approximately three minutes or long enough to fillapproximately one cup.

9. Remove the gun and hook assembly from each bracket, leaving theclamp in place as the reference point. Purge each gun in turn forapproximately 20 seconds.

10. Wipe the face of the gun clean with a wet cloth, then purge each gunagain for approximately 20 seconds. When the adhesive stream isjetting uninterrupted from the end of the nozzle, the gun is fullyprimed.

NOTE: It is important that no air remains in the glue supply lines.

For Carton Folder/Gluers

1. Refit each gun, making sure that they are replaced in the sameposition.

2. Inch the cartons through; examine the start/stop positions of eachglue bead and adjust the controller if necessary. Adjust the positionof the guns on the cross bar if required.

3. When using a Glue Regulator Unit, set the Standoff to adjust the gluepressure to give the correct volume of adhesive at the lowest speed.

4. While running the machine at its full running speed, use the Slope toadjust the pressure to achieve the required volume of adhesive.

Startup (contd.)



321 344AIssued 12/01

52-LA22/44-MA-01

For Folding or Mailing Machines

1. Refit each gun and remove the fold plates.

2. Run sheets through, one at a time, and examine each glue bead.Reset the controller if necessary. Adjust the glue pressure to achievedesired glue bead width.

3. Replace the fold plates and run 10 sheets through. Check gluebeads for final spread. Adjust pressure if necessary.

1. If stopping for a short break (e.g., lunch) or overnight, remove the armand gun assembly for the bracket and wipe the nozzle clean, using adamp cloth.

2. Whenever possible, leave the air supply connected and the airpressure on.

NOTE: If using LA 22M or LA 22MB guns, apply a small amount ofgrease to the base of the nozzle to exclude air

NOTE: If the LA 22M or LA 22MB guns are fitted with tip sealers,switch the nozzle tip sealers to cover the nozzles whenever themachine is stopped.

Make sure the glue guns are kept in good condition to maintain qualityperformance.

To prevent the lines from clogging when not in use:

� If glue is purged through all of the lines, rotate the use of the gunsperiodically (example: when changing jobs). Do not leave glue in anyof the unused guns or hoses for more than two days.

� If any of the guns or hoses are not going to be used for two days ormore, clean and leave water in the lines to prevent clogging.

Shutdown

6. Maintenance



321 344AIssued 12/01

52-LA22/44-MA-01

Clean the glue guns monthly. Check for excessive wear and damage.Replace internal parts as necessary.

Required Tools

� For LA 22 MB: One open-end 3/8-in. wrench used for the nozzle

� For LA 22M or LA 22MEK: One open-end 7/16-in. wrench used for thenozzle

� Gun-specific tools

� For the LA 22MB: 5/8-in. open-end wrench used for the guide nut andgap adjustment

� For the LA 44: 1/4-in. wrench or flat screw driver used for the gapadjustment

Disassembly

1. Shut off glue supply to the gun. Use the shutoff valve on top of theglue manifold.

2. Energize the gun while removing ball nozzle from the gun.

CAUTION: Turning the ball nozzle without energizing the gunfirst can damage the ball plunger.

3. De-energize the gun. Carefully shake out plunger and spring, andplace them in a clean container of water.

4. Remove the armature nut from the gun and disconnect the gluefeeding tube.

5. Remove the tip sealer slide and air tubing.

6. Disconnect the electrical plug and remove the gun from the gunbracket.

7. Hold the gun upright under water tap, open the shutoff valve, andflush with warm water until water coming through the gun iscompletely clean. The gun can now be checked visually by holdingup to a light source and looking up into the bottom of the gun. If theinside of the gun is not clean, use a piece of copper wire, a toothpick,or a cotton swab to carefully remove any debris or dried glue.

General Cleaning



321 344AIssued 12/01

52-LA22/44-MA-01

8. Use a tip cleaning tool and water to thoroughly clean the ball nozzle.Take care not to damage the seating area inside the nozzle.

9. Clean the spring and plunger. Make sure that all traces of dried glueor debris are removed from the seat in the plunger and from the coilsof the spring.

Assembly

1. Replace the gun on the gun bracket.

2. Fit the air supply to the tip sealer and the glue supply tube to the topof the gun.

3. Replace the armature nut in the gun.

4. Connect the electric plug and energize the gun.

5. Insert spring into the plunger then insert the plunger/spring assemblyinto the gun body.

6. Replace the ball nozzle into the chamber and de-energize the gun.

7. Open the shutoff valve on top of the glue manifold.

8. Pointing the glue gun into a bucket, energize the gun. Glue will startflowing through the nozzle. Fill one cup with glue to ensure that all ofthe air is purged from the system.

9. Set the gap between the plunger and the armature.

a. While the gun is energized and glue is flowing, turn the armaturenut clockwise until the glue flow becomes a slow drip.


b. After the glue flow stops, rotate the nut counter-clockwiseone-third of a turn (2 flats of the hex nut).


d. Test the adjustment.



321 344AIssued 12/01

52-LA22/44-MA-01

Assembly (contd.)

10. Repeat manual firing of the gun several times to insure proper startand stop of glue flow. Any debris or dried glue in the nozzle willcause erratic glue flow or stoppage of glue flow. Remove and cleanas needed.

11. Position the glue gun for production.

Clean the glue guns monthly.

1. Shut off the air supply, release the pressure in the system, and placethe dip tube in a pail of clean water.

2. Close the shutoff valve on the glue manifold.




5. Connect the air supply and open shutoff valve on glue manifold untilwater comes out of each gun.

6. Close the shutoff valves on the glue manifold and disconnect the airsupply.

7. Open the shutoff valve on the bottom of the glue filter to relieve airpressure. Remove the filter.

8. Clean the filter, filter canister, foot valve on the bottom of the dip tube,and chamber of each gun.

9. Re-assemble the glue filter. Use petroleum jelly or light grease on theO-ring of the filter canister.

10. Close the shutoff valve on the bottom of the glue filter.

Cleaning System with Pump



321 344AIssued 12/01

52-LA22/44-MA-01

11. Place the dip tube in a clean pail of water.

12. Re-connect air supply and open valve on the glue manifold until theclean water comes out of each gun.

13. Close the shutoff valve on the glue manifold. Clean the nozzle,spring, and plunger of each gun.

a. Use a tip cleaning tool to thoroughly clean the ball nozzle withwater. Take care not to damage the seating area inside thenozzle.

b. Clean spring and plunger, making sure that all traces of dried glueor debris are removed from the seat in the plunger and from thecoils of the spring.

14. Check for any damage to the parts before re-assembling the guns.Replace any damaged springs, plungers, or nozzles. Adjust theplunger travel on the guns if needed.

15. Re-connect the air supply, place the dip tube in the glue supply, andpurge all air from the guns that will be used.

Clean the glue guns monthly.

1. Shut off the air supply to the tank and release the internal pressure inthe tank.

2. Remove the tank lid and pour the remaining glue back into acontainer. Make sure that no glue is allowed to get into the fittings atthe top of the tank.

3. Partly fill the tank with water and swirl around.

4. Pour water out into a bucket and discard.

5. Fill the tank with clean water, replace the lid, and pressurize the tank.

6. Close the shutoff valve on the glue manifold.

Cleaning System withPressure Tank



321 344AIssued 12/01

52-LA22/44-MA-01




9. Disconnect the air supply from the tank, then use the safety valve onthe top of the tank to release the air pressure.

10. Clean the filter, filter canister, and chamber of each gun.

11. Re-assemble the glue filter. Use petroleum jelly or light grease on theO-ring of the filter canister.

12. Re-connect the air supply and open valves on the glue manifold untilclean water comes out from the guns.

13. Close the shutoff valve on the glue manifold. Clean the nozzle,spring, and plunger of each gun.

a. Use a tip cleaning tool to thoroughly clean the ball nozzle withwater. Take care not to damage the seating area inside thenozzle.

b. Clean spring and plunger, making sure that all traces of dried glueor debris are removed from the seat in the plunger and from thecoils of the spring.

14. Check for any damage to the parts before re-assembling the guns.Replace any damaged springs, plungers, or nozzles. Adjust theplunger travel on the guns if needed.

15. Re-connect the air supply to the tank and purge all of the air from theguns that will be used.

WARNING: Keep all air and electrical lines away from themoving machine parts. Any damage to electrical lines canseverely damage electronic circuitry and create a safety hazardto operators.

Make sure air lines and air connections are kept in good condition.

Examine the air filter on the air supply line for accumulation of dirt orwater. Empty or change the filter as needed.

Cleaning System withPressure Tank (contd.)



321 344AIssued 12/01

52-LA22/44-MA-01

The LA 22M gun with a cone plunger and seat can be changed to anLA 22MB with ball plunger and ball nozzle.

To perform the change:

1. Reduce the glue pressure to zero by shutting off the feed valve.

2. Remove the nozzle, seat, plunger, and spring. Wash all with water.Save the spring.

3. Clean all threads and sealing surfaces inside the gun. Remove anydried glue or debris.

4. Rotate the armature nut two full turns counterclockwise.

5. Insert the saved spring (or a new one) into the ball plunger.

6. Insert the ball plunger guide.

7. Insert the ball plunger nozzle.

8. Tighten all fittings.

9. Turn glue feed valve on.

10. Check for leaks and tighten all threads as needed.

11. Point the gun into a bucket, energize the glue gun, and glue will startflowing through the nozzle. Purge all air from the line.

12. Set the gap between the plunger and the armature as follows:

a. While the gun is energized and glue flowing, turn the armature nutclockwise until the glue flow stops.


b. After the glue flow stops, rotate the nut counterclockwise one-thirdof a turn (2 flats of a hex nut).


13. Repeat manual firing of the gun several times to insure proper startand stop of glue flow. Any debris or dried glue in the nozzle willcause erratic glue flow or stoppage of glue flow. Remove and cleanas needed.

14. Position the glue gun for production.

Changeover from LA 22M toLA 22MB



321 344AIssued 12/01

52-LA22/44-MA-01

To order parts, call the Nordson Customer Service Center or your localNordson representative. Use the parts list, and the accompanyingillustration, to describe and locate parts correctly.

Numbers in the Item column correspond to numbers that identify parts inillustrations following each parts list. The code NS (not shown) indicatesthat a listed part is not illustrated. A dash (—) is used when the partnumber applies to all parts in the illustration.

The number in the Part column is the Nordson Corporation part number.A series of dashes in this column (- - - - - -) means the part cannot beordered separately.

The Description column gives the part name, as well as its dimensionsand other characteristics when appropriate. Indentions show therelationships between assemblies, subassemblies, and parts.

Item Part Description Quantity Note

— 000 0000 Assembly 1

1 000 000 � Subassembly 2 A

2 000 000 � � Part 1

� If you order the assembly, items 1 and 2 will be included.� If you order item 1, item 2 will be included.� If you order item 2, you will receive item 2 only.

The number in the Quantity column is the quantity required per unit,assembly, or subassembly. The code AR (As Required) is used if thepart number is a bulk item ordered in quantities or if the quantity perassembly depends on the product version or model.

Letters in the Note column refer to notes at the end of each parts list.Notes contain important information about usage and ordering. Specialattention should be given to notes.

7. Parts

Using the Illustrated PartsList



321 344AIssued 12/01

52-LA22/44-MA-01

See Figure 7.


— 727 280 LA 22M, without nozzle 1

— 727 281 LA 22M MEK adhesive, without nozzle 1

1 727 296 � Valve two way, F.M. Flare 1 A

1 727 297 � Valve two way, F.G. Flare 1 A

2 940 101 � O-ring 010 armature, LA 22 2

3 940 141 � O-ring 014 armature nut 1

4 940 081 � O-ring 008 armature/chamber, LA 22 1 A

4 727 298 � O-ring 008 armature/chamber, LA 22MEK 1 B

5 727 087 � Spring, plunger, LA 22 1

6 727 284 � Plunger, cone, LA 22M/MEK 1

7 727 282 � Seat, cone plunger, LA 22M/MEK 1

8 727 283 � Retainer nut, cone plunger, LA 22M/MEK 1

9 727 285 Nozzle, LA 22, 0.20 mm 1

9 727 286 Nozzle, LA 22, 0.25 mm 1

9 727 287 Nozzle, LA 22, 0.30 mm 1

9 727 288 Nozzle, LA 22, 0.35 mm 1

9 727 289 Nozzle, LA 22, 0.40 mm 1

9 727 290 Nozzle, LA 22, 0.40 mm, 20 mm long 1

9 727 295 Nozzle, LA 22, 0.45 mm 1

9 727 291 Nozzle, LA 22, 0.50 mm 1

9 727 292 Nozzle, LA 22, 0.60 mm 1

9 727 293 Nozzle, LA 22, 0.70 mm 1

9 727 294 Nozzle, LA 22, 1.00 mm 1

NS 727 033 Drop bar assy, short without LA 22 1

NS 727 035 Bracket assy, � in. without TS, LA 22/F.M. 1

NS 727 037 Bracket assy, LA 22, F.G. 1

NS 727 038 Bracket hook, LA 22, F.M. 1

NS 727 034 Drop bar assy, long without LA 22 1

NS 727 040 Bracket hook, LA 22, F.G. 1

NS 727 039 Bracket, LA 22, F.G. 1

NS 727 226 Cable, ground, LA 22, opened end, 5m 1

10 727 329 Glue/electrical hose assy, LA 22 hang tree F.M., 4 ft. 1 A, C

10 727 330 Glue/electrical hose assy, LA 22 hang tree F.M., 6 ft. 1 A, C

10 727 331 Glue/electrical hose assy, LA 22 hang tree, F.M., 8 ft. 1 A, C

10 727 332 Glue/electrical hose assy, LA 22 F.M. cart, 6 ft. 1 A, C



Continued on next page

LA 22M and LA 22MEK Guns



321 344AIssued 12/01

52-LA22/44-MA-01


10 727 335 Glue/electrical hose assy, LA 22 F.G. cart, 8 ft. 1 A, C



10 727 338 Glue/electrical hose assy, LA 22 F.G. perm, 12 ft. 1 A, C



10 727 341 Glue/electrical hose assy, LA 22 F.G. perm, with ext., 12 ft. 1 A, C, E



10 727 344 Glue/electrical hose assy, LA 22 F.G. right angle, 8 ft. 1 A, C



10 727 347 Glue/electrical hose assy, LA 22 OMEGA 80–60, 10 ft. 1 A, C

10 727 348 Glue/electrical hose assy, LA 22 OMEGA 110, 10 ft. 1 A, C

NS 727 300 Cleaning wire kit 1 D

NS 727 301 � Wire 0.007 in., nozzle 0.2, 0.25 mm 5 D

NS 727 302 � Wire 0.010 in., nozzle 0.3 mm 5 D



NS 727 305 � Wire 0.017 in., nozzle 0.45, 0.5, 0.6 mm 5 D

NS 727 306 � Wire 0.025 in., nozzle 0.7, 1.0 mm 5 D

NS 727 307 � Pin vise, cleaning wire kit 1 D

NOTE A: Use for LA 22M only.

B: Use for LA 22MEK only.

C: For LA 22MEK guns, contact customer service for correct hose assembly.

D: Three vials, containing five wires each, and one pin vise are included in cleaning kit, part 727300

E: Hose includes a 24’ electrical extension.

NS: Not Shown

LA 22M and LA 22MEK Guns (contd.)



321 344AIssued 12/01

52-LA22/44-MA-01

4222017A

1

2

3

7

8

4

5

6

9

10

Fig. 7 LA 22M and LA 22MEK Guns



321 344AIssued 12/01

52-LA22/44-MA-01

See Figure 8.


— 727 077 Gun, LA 22MB, 0.20 mm 1

— 727 078 Gun, LA 22MB, 0.30 mm 1

— 727 079 Gun, LA 22MB, 0.35 mm 1

— 727 080 Gun, LA 22MB, 0.40 mm 1

— 727 081 Gun, LA 22MB, 0.50 mm 1

— 727 082 Gun, LA 22MB, 0.60 mm 1

— 727 083 Gun, LA 22MB, 0.70 mm 1

— 727 084 Gun, LA 22MB, 1.00 mm 1

1 727 085 � Guide, ball plunger, LA 22MB 1

2 727 086 � Plunger, ball, LA 22MB 1


4 940 141 � O-ring 014 armature nut 1

5 940 101 � O-ring 010 armature, LA 22 2

6 940 081 � O-ring 008 armature/chamber, LA 22 1

7 727 296 � Valve two way, F.M. Flare 1

7 727 297 � Valve two way, F.G. Flare 1

8 727 066 Nozzle, ball, LA 22 and LA 44, 0.20 mm 1









NS 727 033 Drop bar assy, short without LA 22 1

NS 727 035 Bracket assy, � in. without TS, LA 22/F.M. 1

NS 727 037 Bracket assy, LA 22, F.G. 1

NS 727 038 Bracket hook, LA 22, F.M. 1

NS 727 034 Drop bar assy, long, without LA 22 1

NS 727 040 Bracket hook, LA 22, F.G. 1

NS 727 039 Bracket, LA 22, F.G. 1

NS 727 226 Cable, ground, LA 22, opened end, 5m 1

9 727 329 Glue/electrical hose assy, LA 22 hang tree F.M., 4 ft. 1

9 727 330 Glue/electrical hose assy, LA 22 hang tree F.M., 6 ft. 1

9 727 331 Glue/electrical hose assy, LA 22 hang tree, F.M., 8 ft. 1

9 727 332 Glue/electrical hose assy, LA 22 F.M. cart, 6 ft. 1



Continued on next page

LA 22MB Gun



321 344AIssued 12/01

52-LA22/44-MA-01

Item NoteQuantityDescriptionPart

9 727 335 Glue/electrical hose assy, LA 22 F.G. cart, 8 ft. 1



9 727 338 Glue/electrical hose assy, LA 22 F.G. perm, 12 ft. 1



9 727 341 Glue/electrical hose assy, LA 22 F.G. perm, with ext., 12 ft. 1 A



9 727 344 Glue/electrical hose assy, LA 22 F.G. right angle, 8 ft. 1



9 727 347 Glue/electrical hose assy, LA 22 OMEGA 80–60, 10 ft. 1

9 727 348 Glue/electrical hose assy, LA 22 OMEGA 110, 10 ft. 1

NS 727 300 Cleaning wire kit 1 B

NS 727 301 � Wire 0.007 in., nozzle 0.2, 0.25 mm 5 B

NS 727 302 � Wire 0.010 in., nozzle 0.3 mm 5 B



NS 727 305 � Wire 0.017 in., nozzle 0.45, 0.5, 0.6 mm 5 B

NS 727 306 � Wire 0.025 in., nozzle 0.7, 1.0 mm 5 B

NS 727 307 � Pin vise, cleaning wire kit 1 B

NOTE A: Hose includes a 24’ electrical extension.

B: Three vials, containing five wires each, and one pin vise are included in cleaning kit, part 727300.

NS: Not Shown

4222003A

7

5

4

18

2

3

6

9

Fig. 8 LA 22MB Gun



321 344AIssued 12/01

52-LA22/44-MA-01

See Figure 9.


— 727 665 Gun, LA 844, 0.20 mm 1

— 727 666 Gun, LA 844, 0.30 mm 1

— 727 667 Gun, LA 844, 0.35 mm 1

— 727 668 Gun, LA 844, 0.40 mm 1

— 727 669 Gun, LA 844, 0.50 mm 1

— 727 670 Gun, LA 844, 0.60 mm 1

— 727 671 Gun, LA 844, 0.70 mm 1

— 727 672 Gun, LA 844, 1.00 mm 1

1 727 058 � Chamber, LA 44 1

2 727 059 � Plunger, ball, LA 44 1


4 727 063 � Armature, LA 44 1

5 727 064 � Slide, tip sealer, LA 44 1

6 727 061 � Fitting, glue inlet, straight 1

6 727 062 � Fitting glue inlet, 90 degrees 1

7 940 121 � O-ring #1 chamber, LA 44 1

8 940 111 � O-ring #2 chamber, LA 44 1 A

9 727 392 � O-ring #3 chamber, LA 44 1

10 940 111 � O-ring #1 armature, LA 44 1 A

11 727 393 � O-ring #2 armature, LA 44 1

12 727 394 � O-ring #3 armature, LA 44 1

13 727 065 � Pad, tip sealer, LA 44 1










14 727 285 Nozzle, LA 22, 0.20 mm 1

14 727 286 Nozzle, LA 22, 0.25 mm 1

14 727 287 Nozzle, LA 22, 0.30 mm 1

14 727 288 Nozzle, LA 22, 0.35 mm 1

14 727 289 Nozzle, LA 22, 0.40 mm 1

14 727 290 Nozzle, LA 22, 0.40 mm 20 mm long 1

NS 727 350 Electrical harness, LA 44, post 1080/4115 1

15 727 349 Glue/electrical hose assy, LA 44, post 1080/4115, 20 ft. 1

NOTE A: This O-ring is used on chamber #2 and on armature #1.Continued on next page

LA 44 Gun



321 344AIssued 12/01

52-LA22/44-MA-01


15 727 331 Glue/electrical hose assy, LA 22, hang tree, 8 ft., F.M. 1

NS 727 036 Guide, ‘J’, LA 22 1

NS 727 300 Cleaning wire kit 1 A

NS 727 301 � Wire 0.007 in., nozzle 0.2, 0.25 mm 5 A

NS 727 302 � Wire 0.010 in., nozzle 0.3 mm 5 A



NS 727 305 � Wire 0.017 in., nozzle 0.45, 0.5, 0.6 mm 5 A

NS 727 306 � Wire 0.025 in., nozzle 0.7, 1.0 mm 5 A

NS 727 307 � Pin vise, cleaning wire kit 1 A

NOTE A: Three vials, containing five wires each, and one pin vise are included in cleaning kit, part 727300.

NS: Not Shown

4222007A

6

11

2

9

8

410

12

3

5813

1

14

7

15

Fig. 9 LA 44 Gun



321 344AIssued 12/01

52-LA22/44-MA-01

LA 22M and LA 22MEK Guns Spare Parts List

See Figure 10.


1 727 296 Valve two way, F.M. Flare 1 A

1 727 297 Valve two way, F.G. Flare 1 A

2 940 101 O-ring 010 armature, LA 22 2

3 940 141 O-ring 014 armature nut 1

4 940 081 O-ring 008 armature/chamber, LA 22M 1 A

4 727 298 O-ring 008 armature/chamber, LA 22MEK 1 B

5 727 087 Spring, plunger, LA 22 1

6 727 284 Plunger, cone, LA 22M/MEK 1

7 727 282 Seat, cone plunger, LA 22M/MEK 1

8 727 283 Retainer nut, cone plunger, LA 22M/MEK 1

9 727 285 Nozzle, LA 22, 0.20 mm 1 C

9 727 286 Nozzle, LA 22, 0.25 mm 1 C

9 727 287 Nozzle, LA 22, 0.30 mm 1 C

9 727 288 Nozzle, LA 22, 0.35 mm 1 C

9 727 289 Nozzle, LA 22, 0.40 mm 1 C

9 727 290 Nozzle, LA 22, 0.40 mm, 20 mm long 1 C

9 727 295 Nozzle, LA 22, 0.45 mm 1 C

9 727 291 Nozzle, LA 22, 0.50 mm 1 C

9 727 292 Nozzle, LA 22, 0.60 mm 1 C

9 727 293 Nozzle, LA 22, 0.70 mm 1 C

9 727 294 Nozzle, LA 22, 1.00 mm 1 C

NOTE A: Use for LA 22M only.

B: Use for LA 22MEK only

C: Keep preferred nozzle(s) in spare parts inventory.

4222013A

1

2

3

7

8

4

5

6

9

Fig. 10 Spare Parts for LA 22M and LA 22MEK Guns

Recommended Spare Parts



321 344AIssued 12/01

52-LA22/44-MA-01

LA 22MB Guns Spare Parts

See Figure 11.


1 727 085 Guide, ball plunger, LA 22MB 1

2 727 086 Plunger, ball, LA 22MB 1


4 940 141 O-ring 014 armature nut 1

5 940 101 O-ring 010 armature, LA 22 2

6 940 081 O-ring 008 armature/chamber, LA 22 1

7 727 296 Valve two way, F.M. Flare 1

7 727 297 Valve two way, F.G. Flare 1

8 727 066 Nozzle, ball, LA 22 and LA 44, 0.20 mm 1 A









NOTE A: Keep preferred nozzle(s) in spare parts inventory.

4222019A

7

5

4

1

8

2

3

6

Fig. 11 Spare Parts for LA 22MB Guns



321 344AIssued 12/01

52-LA22/44-MA-01

LA 44 Guns Spare Parts

See Figure 12.


1 727 058 Chamber, LA 44 1

2 727 059 Plunger, ball, LA 44 1


4 727 063 Armature, LA 44 1

5 727 064 Slide, tip sealer, LA 44 1

6 727 061 Fitting, glue inlet, straight 1

6 727 062 Fitting glue inlet, 90 degrees 1

7 940 121 O-ring #1 chamber, LA 44 1

8 940 111 O-ring #2 chamber, LA 44 1 A

9 727 392 O-ring #3 chamber, LA 44 1

10 940 111 O-ring #1 armature, LA 44 1 A

11 727 393 O-ring #2 armature, LA 44 1

12 727 394 O-ring #3 armature, LA 44 1

13 727 065 Pad, tip sealer, LA 44 1

14 727 066 Nozzle, ball, LA 22 and LA 44, 0.20 mm 1 B









14 727 285 Nozzle, LA 22, 0.20 mm 1 B

14 727 286 Nozzle, LA 22, 0.25 mm 1 B

14 727 287 Nozzle, LA 22, 0.30 mm 1 B

14 727 288 Nozzle, LA 22, 0.35 mm 1 B

14 727 289 Nozzle, LA 22, 0.40 mm 1 B

14 727 290 Nozzle, LA 22, 0.40 mm 20 mm long 1 B

NOTE A: This O-ring is used on chamber #2 and on armature #1.

B: Keep preferred nozzle(s) in spare parts inventory.



321 344AIssued 12/01

52-LA22/44-MA-01

4222008A

6

11

2

9

8

7

1

1314

7 5

3

4 10

12

Fig. 12 Spare Parts for LA 44 Guns

4222014A



321 344AIssued 12/01

52-LA22/44-MA-01

Installation

The TS 422 tip sealer can be mounted on the LA 22 glue gun toseal/unseal the gun nozzles. The tip sealer is an air piston, spring returnmechanism with an attached sealing pad. When pressurized air isapplied to the piston, the sealing pad slides away from the nozzle. Whenpressurized air is removed, the spring pushes the pad back to cover thenozzle.

The supply of pressurized air to the tip sealer is governed by a solenoidair valve, that is connected to the TSC 522 tip sealer control unit. Thecontrol unit permits activation of the tip sealer either manually orautomatically. Refer to TSC 522 Tip Sealer Control Unit, this section.

Removing/Installing the Tip Sealer Slide

The tip sealer slide is removable. It is held in position with anengagement pin that snaps into the piston.

4222011A

Tip sealer

Engagement pin

Slide

Fig. 13 TS 422 Removing/Installing the Tip Sealer Slide

8. Options

TS 422 Tip Sealer



321 344AIssued 12/01

52-LA22/44-MA-01

Shutting Off Individual Tip Sealers

Only the working guns should have exposed nozzles while in use. Whenseveral guns are mounted on a machine, and only one or two are usedon a particular job, keep the tip sealers on the unused guns in the closedposition. Air shutoff valves are provided for this purpose. If a particulartip sealer is shut off, the tip sealer sliding pad remains in the closedposition.

Make sure that when a tip sealer air supply is turned OFF, this same gunis not actuated by the glue pattern controller. Turn OFF both the tipsealer and gun actuation. Turning the air supply ON returns the tipsealer to the operating mode.

Mounting and Adjustment

1. Use the two Allen head cap screws (10 X 32 X � in.) supplied withthe tip sealer to mount the tip sealer to the gun.

CAUTION: Risk of equipment damage. Do not use longer orshorter screws. Different size screws may damage the gun.

2. Verify that when the slide is in the sealing position, the sealing pad ispressing lightly on the nozzle. Place a thin piece of paper betweenthe nozzle and the pad. Slide the pad to the sealing position, keepingthe paper between the pad and the nozzle, and pull on the paper. Itshould not slide out easily. If it does, perform one or all of thefollowing until the paper is tight between the pad and the nozzle.

a. Make sure that the sealing pad is not dirty, torn, or worn out.Remove the retaining plate and clean with water or replace asneeded.

b. Raise the mounting position of the tip sealer on the gun to themaximum allowed to increase the pressure between the pad andthe nozzle.

c. Readjust the engagement pin to increase the upward tension onthe slide.

NOTE: If the engagement pin is readjusted, use a thread lockingcompound (Loctite-blue) to prevent free turning of theengagement pin relative to the slide.

3. Make sure that the piston and O-ring are in good condition and welllubricated. Use light grease as needed.

4222012A



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The TSC 522 Tip Sealer Control Unit is an electronic control device thatcontrols the activation of the TS 422 tip sealer. Refer to TS 422 TipSealer, this section. It has the ability to control this activation manually orautomatically.

The type of glue pattern control unit used determines whether each gluegun can be activated individually or if several guns are activated together.The TCU and PDC controllers allow activation of a group of gunsconnected to the same channel. The APC controller allows activation ofeach gun individually.

Automatic Operation

The automatic operation of the tip sealer is activated by the trigger photosensor. When products traveling on the machine pass the trigger photosensor they should activate the sensor. An active sensor is signaled by ablinking red LED on the rear of the sensor. The first trigger of the photosensor that is detected by the tip seal control logic activates the slidingpad of the sealing unit. The sliding pad retracts from the glue gun nozzle,allowing glue to flow.

NOTE: Earlier activation is possible. Normally the unit is connected tothe photo sensor that starts the glue cycle. If it is necessary to retract thesealing pad earlier, a secondary photo sensor can be mounted upstream,which—when connected to the TSC 522—causes actuation of the tipsealer when triggered. Consult the factory if such an arrangement isdesired.

Continuous product flow sensed by the trigger photo sensor causes thetip sealer to remain retracted/open.

When products stop flowing through the machine, the trigger photosensor stops signaling the control logic. After five seconds of inactivity,the control logic causes the sliding pad to move forward toward thenozzle and seals it.

TSC 522 Tip Sealer ControlUnit



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Manual Operation

The remote key pad allows for remote manual activation of the tip sealerand of the glue gun. This is required for purging the guns or for checkingtheir proper operation.

� TIP SEALER Key

- Press the key marked TIP SEALER one time to retract the slidingpad and expose the nozzle.

- Press it a second time to make the sliding pad move forward andseal the nozzle.

� Numbered PURGE Keys

- Press one of the numbered purge key switches (1A, 2A, etc.) toactivate the tip sealer and associated glue gun(s).

- Press it a second time to release the purge key switch tode-activate the tip sealer and associated glue gun(s).

Example:

� Press the 1A key to retract the tip sealer and activate the gun orgroup of guns associated with channel 1A. The glue output isslightly delayed to allow the sliding pad to clear the nozzle beforethe glue exits.

� Press the 1A key again to release it and immediately de-activatethe gun. This stops the flow of glue and allows the tip sealersliding pad to slide back into the nozzle sealing position.

Mounting and Connections

Mount the TSC 522 control unit close to the glue pattern controller tokeep the connecting cables short and put the unit in easy reach of theoperator. See Figure 14.

1. Mount the air manifold, air valve, and air filter regulator close to theglue pattern controller, but out of the way of the operator.



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Mounting and Connections (contd.)

2. Using the magnetic mount, mount the key pad to a steel surface in anarea convenient for the operator’s reach.

3. Connect the trigger photo sensor—which is normally connected to theglue pattern control unit—to the tip sealer control unit.

NOTE: Earlier activation is possible. Normally the unit is connectedto the photo sensor that starts the glue cycle. If it is necessary toretract the sealing pad earlier, a secondary photo sensor can bemounted upstream. Consult the factory if such an arrangement isdesired.

4. Connect the cable exiting the tip sealer control unit to the triggerphoto sensor socket in the glue pattern controller. This is where thetrigger photo sensor is normally connected.

5. Connect the solenoid air valve to the cable exiting the tip sealercontrol unit.

6. Connect the air supply (80 psi) to the air regulator and set thepressure to 80 psi.

7. Connect the 1/8 in. diameter air tubing to the tip sealer.

4222018A

ManifoldAir/Glue

Air Valve

3V

LA22Gun

PhotoSensor

To Photo Sensor Socket

Remote Hold Cables

GluePattern

Controller(TCU/APC/PDC)

Air In80psi

GlueTank

AirFilter

60psi80psiGlueFilter

Solenoid Air Valve

RemoteKeyPad

Product Flow

TS 422Tip Sealer

TSC 522Tip Sealer Control Unit

Fig. 14 TS 422 and TS 522 Tip Sealer Control Unit Connection Diagram



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1 727074 Tip sealer, TS 422 1 A

2 727075 Pad, tip sealer, TS 422 1 B

3 727076 Slide assembly, TS 422 1 B

NS 727387 Tip sealer control box TSC 522 (for LA 22 and LA 44) 1

NS 727388 Remote key pad with 10 ft. cable (for LA 22 and LA 44) 1

NOTE A: Recommended spare part for LA 22 guns.

B: Recommended spare part for LA 22 and LA 44 guns.

NS: Not Shown

4222015A

1

2

3

Fig. 15 TS 422 Tip Sealer

TS 422 Tip Sealer Parts List



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Item LA 22M/LA 22MEK LA 22MB LA 44

Spotting max. spotting frequency250 c/sec.; spots at a4 mm pitch at 60 m/min(200 ft/min)

#17 coil: max. spottingfrequency 250 c/sec.;spots at a 4 mm pitch at60 m/min (200 ft/min)

#4 coil: max. spottingfrequency 500 c/sec.;spots at a 2 mm pitch at60 m/min (200 ft/min)

max. spotting frequency800 c/sec.; spots at a2 mm pitch at 96m/min(314 ft/min)

Line Work max. 600 m/min(2000 ft/min)

max. 600m/min(2000 ft/min)

The initial controller settings are listed in the following table. The gap isset to the required distance in millimeters.

NOTE: Actual settings will depend on glue pressure, adhesive viscosity,distance of nozzle tip from surface, and other variables.

Initial Controller Settings

Item LA 22M/LA 22MEK LA 22MB LA 44

Spotting on comp: 4.0 ms

off comp: 1.8 ms

on comp: 4.0 ms

off comp: 1.8 ms

on comp: 4.0 ms

off comp: 1.8 ms

MinimumReaction Time

1.8 ms #17 coil: 1.8 ms

#4 coil: 0.8 ms

0.8 ms

Line Work on comp: 4.0 ms

off comp: 3.5 ms

on comp: 6.7 ms

off comp: 6.3 ms

on comp: 6.7 ms

off comp: 6.7 ms

9. Technical Data

Performance

Controller Settings

Documents

LA 22 and LA 44 Glue Guns - Nordsonemanuals.nordson.com/adhesives/English_Manuals/321344.pdfLA 22 and LA 44 Glue Guns Customer Product Manual Part 321 344A NORDSON CORPORATION Duluth,