Drip and Drag Applicator Tool with Felt Wick Dispenseremanuals.nordson.com/automotive/zfiles/331287A.pdf · Drip and Drag Applicator Tool with Felt Wick Dispenser Customer Product

Drip and Drag ApplicatorTool with Felt Wick

Dispenser

Customer Product ManualPart 331 287A

NORDSON CORPORATION D AMHERST, OHIO D USA

E 1999 Nordson CorporationAll rights reserved

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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 Service555 Jackson StreetAmherst, OH 44001

Notice

This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1999. No part ofthis 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

Blue Box, Can Works, Century, CleanSleeve, CleanSpray, Control Coat, Cross-Cut, Easy Coat, Econo-Coat, Excel2000, Flow Sentry, FoamMix, Horizon, Hot Shot, Isocoil, Isocore, Iso-Flo, MEG, Nordson, the Nordson logo,

Package of Values, PowderGrid, Pro-Flo, PRX, RBX, Ready Coat, Rhino, SCF, Select Coat, Select Cure, Shur-Lok,Smart-Coat, System Sentry, Tribomatic, Versa-Coat, Versa-Screen, and Versa-Spray

are registered trademarks of Nordson Corporation.

Accu-Jet, Auto-Flo, CanNeck, Clean Coat, CPX, EasyClean, Ink-Dot, OptiMix, PowderGrid, Pulse-Spray, SureCoat, Swirlcoat and Walcom are trademarks of Nordson Corporation.

All other trademarks are the property of their respective owners.

Table of Contents i

� 1999 Nordson CorporationAll rights reserved

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Table of Contents

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

Qualified Personnel 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Intended Use 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Regulations and Approvals 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Personal Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High-Pressure Fluids 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fire Safety 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Halogenated Hydrocarbon Solvent Hazards 5. . . . . . . . . . . . . . . .

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

Disposal 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Description 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Drip and Drag Applicator Tool 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicator Tool Versions 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicator Tool Basic Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . .

Felt Wick Dispenser 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solvent Brush System 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Installation 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Drip and Drag Applicator Tool 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .


Installing the Felt Wick Dispenser 15. . . . . . . . . . . . . . . . . . . . . . . .

Adjusting the Felt Wick Dispenser 15. . . . . . . . . . . . . . . . . . . . . . .

Installing a New Spool of Felt 17. . . . . . . . . . . . . . . . . . . . . . . . . . .


4. Operation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contentsii


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5. Maintenance 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. Troubleshooting 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




7. Repair 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


Removing the Applicator Tool from Operation 24. . . . . . . . . . . . .

Cleaning the Fiber Optic Sensor 25. . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Fiber Optic Cable 25. . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Felt Gripper Jaws 27. . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Clear and Black Dispensing Modules 28. . . . . . . .

Replacing the Black Primer Fluid Regulator 28. . . . . . . . . . . . . . .

Purging the Clear Primer Fluid Line 29. . . . . . . . . . . . . . . . . . . . . .


Replacing the Blade Set 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Felt Shear Cylinder 32. . . . . . . . . . . . . . . . . . . . . . .

Replacing the Lower Felt Clamp Cylinder 34. . . . . . . . . . . . . . . . .

Replacing the Upper Felt Clamp Cylinder 34. . . . . . . . . . . . . . . . .

Replacing the Felt Shuttle Slide 35. . . . . . . . . . . . . . . . . . . . . . . . .


Replacing the Solvent Brushes 35. . . . . . . . . . . . . . . . . . . . . . . . . .

8. Parts 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Illustrated Parts List 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Drip and Drag Applicator Tools 37. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Felt Wick Dispenser with Solvent Brush System 39. . . . . . . . . . . . .

Solvent Brush System Parts 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Drip and Drag Applicator Tool with Felt Wick Dispenser 1


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Drip and Drag Applicator Tool with Felt WickDispenser

Read 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.

Equipment owners are responsible for making sure that Nordsonequipment is installed, operated, and serviced by qualified personnel.Qualified personnel are those employees or contractors who are trainedto safely perform their assigned tasks. They are familiar with all relevantsafety rules and regulations and are physically capable of performingtheir assigned tasks.

Use of Nordson equipment in ways other than those described in thedocumentation supplied with the equipment may result in injury topersons or damage to property.

Some examples of unintended use of equipment include

� using incompatible materials� making unauthorized modifications� removing or bypassing safety guards or interlocks� using incompatible or damaged parts� using unapproved auxiliary equipment� operating equipment in excess of maximum ratings

Make sure all equipment is rated and approved for the environment inwhich it is used. Any approvals obtained for Nordson equipment will bevoided if instructions for installation, operation, and service are notfollowed.

1. Safety

Qualified Personnel

Intended Use

Regulations and Approvals

Drip and Drag Applicator Tool with Felt Wick Dispenser2


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To 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 bypassor disarm any safety devices.

� Keep clear of moving equipment. Before adjusting or servicingmoving equipment, shut off the power supply and wait until theequipment comes to a complete stop. Lock out power and secure theequipment to prevent unexpected movement.

� Relieve (bleed off) hydraulic and pneumatic pressure before adjustingor servicing pressurized systems or components. Disconnect, lockout, and tag switches before servicing electrical equipment.

� While operating manual spray guns, make sure you are grounded.Wear electrically conductive gloves or a grounding strap connected tothe gun handle or other true earth ground. Do not wear or carrymetallic objects such as jewelry or tools.

� If you receive even a slight electrical shock, shut down all electrical orelectrostatic equipment immediately. Do not restart the equipmentuntil the problem has been identified and corrected.

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

� Make sure the spray area is adequately ventilated.

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

Personal Safety



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High-Pressure Fluids

High-pressure fluids, unless they are safely contained, are extremelyhazardous. Always relieve fluid pressure before adjusting or servicinghigh pressure equipment. A jet of high-pressure fluid can cut like a knifeand cause serious bodily injury, amputation, or death. Fluids penetratingthe skin can also cause toxic poisoning.

If you suffer a fluid injection injury, seek medical care immediately. Ifpossible, provide a copy of the MSDS for the injected fluid to the healthcare provider.

The National Spray Equipment Manufacturers Association has created awallet card that you should carry when you are operating high-pressurespray equipment. These cards are supplied with your equipment. Thefollowing is the text of this card:

WARNING: Any injury caused by high pressure liquid can beserious. If you are injured or even suspect an injury:

� Go to an emergency room immediately.� Tell the doctor that you suspect an injection injury.� Show him this card.� Tell him what kind of material you were spraying.

MEDICAL ALERT—AIRLESS SPRAY WOUNDS: NOTE TO PHYSICIAN

Injection in the skin is a serious traumatic injury. It is important to treatthe injury surgically as soon as possible. Do not delay treatment toresearch toxicity. Toxicity is a concern with some exotic coatings injecteddirectly into the bloodstream.

Consultation with a plastic surgeon or a reconstructive hand surgeon maybe advisable.

The seriousness of the wound depends on where the injury is on thebody, whether the substance hit something on its way in and deflectedcausing more damage, and many other variables including skinmicroflora residing in the paint or gun which are blasted into the wound.If the injected paint contains acrylic latex and titanium dioxide thatdamage the tissue’s resistance to infection, bacterial growth will flourish.The treatment that doctors recommend for an injection injury to the handincludes immediate decompression of the closed vascular compartmentsof the hand to release the underlying tissue distended by the injectedpaint, judicious wound debridement, and immediate antibiotic treatment.



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To avoid a fire or explosion, follow these instructions.

� Ground all conductive equipment in the spray area. Use onlygrounded air and fluid hoses. Check equipment and workpiecegrounding devices regularly. Resistance to ground must not exceedone megohm.

� Shut down all equipment immediately if you notice static sparking orarcing. Do not restart the equipment until the cause has beenidentified and corrected.

� 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 materialMSDS for guidance.

� Do not disconnect live electrical circuits while working with flammablematerials. Shut off power at a disconnect switch first to preventsparking.

� Know where emergency stop buttons, shutoff valves, and fireextinguishers are located. If a fire starts in a spray booth,immediately shut off the spray system and exhaust fans.

� Shut off electrostatic power and ground the charging system beforeadjusting, cleaning, or repairing electrostatic equipment.

� Clean, maintain, test, and repair equipment according to theinstructions in your equipment documentation.

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

Fire Safety



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Halogenated Hydrocarbon Solvent Hazards

Do not use halogenated hydrocarbon solvents in a pressurized systemthat contains aluminum components. Under pressure, these solventscan react with aluminum and explode, causing injury, death, or propertydamage. Halogenated hydrocarbon solvents contain one or more of thefollowing elements:

Element Symbol Prefix

Fluorine F “Fluoro-”

Chlorine Cl “Chloro-”

Bromine Br “Bromo-”

Iodine I “Iodo-”

Check your material MSDS or contact your material supplier for moreinformation. If you must use halogenated hydrocarbon solvents, contactyour Nordson representative for information about compatible Nordsoncomponents.

If a system or any equipment in a system malfunctions, shut off thesystem immediately 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 restartingthe system.

Dispose of equipment and materials used in operation and servicingaccording to local codes.

Action in the Event of aMalfunction

Disposal



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This manual covers the various models of Drip and Drag applicator tool,the felt wick dispenser, valve packs, and the solvent brush system.These components are used primarily with the Drip and Drag primerdispensing system.

The following paragraphs describe the components and operation of theDrip and Drag applicator tool (applicator tool).

Applicator Tool Versions

See Figure 1. There are three versions of the applicator tool that areconfigured differently based upon the type of material to be dispensed.The applicator tool versions are

� clear primer applicator tool (1)� black primer applicator tool (2)� clear and black primer applicator tool (3)

NOTE: Most of the illustrations in this manual show the clear and blackprimer applicator tool as the typical version. The clear and black primerapplicator tool combines all of the components used in the other twoversions.

2. Description

Drip and Drag Applicator Tool



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2813001A

1 2

3

Fig. 1 Drip and Drag Applicator Tool with Felt Wick Dispenser

1. Clear primer applicator tool 2. Black primer applicator tool 3. Clear and black primer applicatortool



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Applicator Tool Basic Operation

See Figure 2. The Drip and Drag applicator tool applies primer to aworkpiece via dispensing guns (3). The gripper jaws (4) on the applicatortool grip, drag, and drop the felt supplied by the felt wick dispenser. Thefelt held in the gripper jaws applies the primer dispensed from the guns.Fiber optic sensors (2) measure the primer dispense rates andcommunicate dispense information to a system controller. A black primerfluid regulator (5) controls the black primer dispensing pressure.

The applicator tool can be robot-mounted (the robot arm moves theapplicator tool to the workpiece) or stationary (a robot presents theworkpiece to the applicator tool).

The applicator tool has a seven-station valve pack (1) that controls thepneumatic components found in the applicator tool. The valve pack istypically mounted on the robot arm with an external air supply (such asfrom a primer delivery system or other configuration as required by yourapplication).



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2813009A

1

5

22

3 34

Fig. 2 Applicator Tool Components

1. Seven-station valve pack2. Fiber optic sensors

3. Dispense guns4. Gripper jaws

5. Black primer fluid regulator



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See Figure 3. The felt wick dispenser is a pneumatically powered devicethat dispenses and cuts felt for pickup by the Drip and Drag applicatortool. A 12-station valve pack (2) mounted on the felt wick dispenserframe (5) controls the various devices.

Two spools of felt (3), with an auto-changeover feature, are mounted tothe dispenser. When one spool of felt reaches the low limit, the supply isautomatically switched to the other spool (via robot programming).

In the course of operation, the applicator tool drops the used felt into awaste container located on a platform (7) welded to the felt wickdispenser frame. The robot then positions the applicator tool over the feltwick dispenser so that it can pick up a fresh piece of felt.

Air driven devices cause the dispenser to index a fresh length of felt aftereach completed dispense cycle. The felt wick dispenser is equipped witha slide mechanism and a blade set (1) that pushes forward to cut the feltafter it is indexed from the spool. The dispenser is preset to dispense feltthat is 2.25-in. (long) x 0.75-in. (wide) x 0.25-in. (thick). The feedermechanism can be adjusted to accommodate felts of varying thickness,width, and length.

Fiber optic sensors are mounted between the two blade sets to measurethe presence or absence of felt in the applicator tool gripper jaws.Solvent brushes (6) are wetted and used to clean the dispensing gunnozzles between dispense cycles.

Felt Wick Dispenser



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2813002A

8

4

7

5

3

1

2

6

Fig. 3 Felt Wick Dispenser

1. Blade set2. 12-station valve pack3. Felt spools

4. Air inlet elbow5. Frame6. Connectors (24 Vdc and remote

I/O)

7. Waste container platform8. Solvent brushes



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See Figure 4. The solvent brush system feeds solvent (typically MEK)from a five-gallon pressure pot (3) through tubing (4) to a set of brushesmounted on the felt wick dispenser (See Figure 3, (8)). The solventpressure pot has a regulator (2) the keeps the pressure below 0.7 bar(10 psi). The pressure in the pot can be adjusted to regulate solvent flowto the brushes.

Pneumatic controls continually feed solvent to the brushes, keeping themwet. Supply air to the solvent brush system is attached at the air inletelbow (1). In dispense operation, the primer dispensing guns on theapplicator tool are passed over the brushes to keep the guns free ofmaterial buildup.

NOTE: The robot must pass the guns over the solvent brushes afterevery dispense cycle (three passes minimum). The robot can beprogrammed to clean the felt load rods every fourth or fifth cycle.

2813003A

3

4

1

2

Fig. 4 Solvent Brush System

1. Air inlet2. Pressure regulator

3. Five-gallon solvent pressure pot4. Tubing (to solvent dispensing

module)

Solvent Brush System



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

Refer to Table 1 for installation information regarding the Drip and Dragapplicator tool.

Table 1 Making Applicator Tool Connections

Type of Connections Procedure

Mounting See Figure 5. Mount the applicator tool to the robot arm or in a stationary position. Bothmounting configurations require a customer-supplied adapter plate. The adapter platemust accept one M6 dowel pin and two 1/4-20 UNC fasteners spaced as shown inFigure 5.

NOTE: Route and secure all cables so as not to interfere with robot motion.

Electrical Attach a 10–30 Vdc electrical supply to the fiber optic sensors on the applicator tool.

Refer to the electrical schematics in the system documentation provided when makingelectrical connections for the other components in the system.

Fluid Refer to the schematics in the system documentation provided when making the fluidconnections for the applicator tool.

The fluid circulation pressure rating for the applicator tool is 2.8–5.5 bar (40–80 psi).The black primer fluid regulator should be set at 0.8–1.0 bar (12–15 psi). The fluid linefrom the regulator restricts the dispense pressure to 0.3–0.4 bar (4–6 psi). The clearprimer dispense pressure is set at the pressure pot to 0.4–0.6 bar (6–8 psi).

WARNING: Handle hazardous materials, including solvents, carefully. Consultthe MSDS for all materials and be aware of potential dangers. Failure to observewarning could result in dangerous exposure to hazardous materials.

CAUTION: Be sure to use the recommended seal materials to ensure propersystem operation and prevent fluid leaks. The following recommendations apply:

� Clear primer components: Santoprene. Fluorocarbon elastomers (Viton) and EDPMrubber may also be used. Never use Thiokol rubber. Do not use brass components.

� Black primer components: Ethylene Propylene Rubber (EPR). Fluorocarbonelastomers may also be used.

Pneumatic Connect a line supplying shop air at 20 cfm @ 8.3 bar/120 psi maximum to theapplicator tool. Refer to the schematics in the system documentation provided whenmaking pneumatic connections for the applicator tool.

3. Installation




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2813004A

A

A

(3.00 in.)

(1.50 in.)

(1.375 in.)

– B –

– A –

Section A–A

(0.29 in.)

(0.500 in.)2 PLACES

.281

.291THRU ON 1.576∅ B.C.

∅ .015 M A B C

M6 DOWEL PIN

∅

(FAR SIDE)1.9781.982

∅ X .188 D.P.

Fig. 5 Drip and Drag Applicator Tool Mounting Dimensions

Drip and Drag Applicator Tool (contd)



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The following section contains installation procedures for variouscomponents found in the felt wick dispenser.

Installing the Felt Wick Dispenser

Install the felt wick dispenser in the glass cell where the robot can easilyobtain the felt from the dispenser. Follow this procedure to install the feltwick dispenser in a typical setup:

1. See Figure 3. Secure the dispenser frame (5) to the floor.

2. Connect an air supply line (shop air — 20 cfm @ 120 psi) to the12-station valve pack on the side of the dispenser to the elbow (4).

3. Orient the felt spools (3) so that they can be accessed withoutentering the glass cell and stopping production.

4. Provide an electrical connection from the PLC to the valve pack (6).

Adjusting the Felt Wick Dispenser

See Figure 6. Refer to Table 2 for guidelines for adjusting the felt wickdispenser.

Table 2 Felt Wick Dispenser Adjustments

Item How to Adjust

Length of felt Thread the rod and nut assembly (5) at the bottom of the felt shuttle, which limits themovement of the shuttle. You can adjust the length from 1.75-in. to 2.25-in. (typical felt lengthis set for 2.25 in.).

Felt position Using a 3/16 hex bit, loosen the two screws (1) on the felt guide (6). Move the felt guideposition to accommodate different widths of felt. One edge of the felt is always located nearone edge of the blade set.

Felt tension Change the position of the in-feed felt guide (4). The location of the guide will determine theamount of drag on the felt prior to entering the felt shuttle. This translates into tension in thefelt between the in-feed guide and the felt shuttle clamp.

You cannot control the tension after the felt protrudes from the felt shuttle clamp. The behaviorof the felt after protruding from the clamp mechanism is largely determined by the felt stiffness.

Felt width Using a 5/32 hex bit, loosen the screws (2) that hold the plate (3) in place. Sliding the plateaway from the felt pathway will allow for using a wider felt.

Felt location You cannot adjust the lateral location of the felt as it protrudes from the mechanism. Thelocation is fixed.

Felt Wick Dispenser



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Adjusting the Felt Wick Dispenser (contd)

2813011A

3

4

6

5

2

1

Fig. 6 Felt Adjustment Locations

1. 10-322 UNF screws2. 1/4-20 UNC screws

3. Plate4. In-feed felt guide

5. Rod and nut assembly6. Felt guide



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Installing a New Spool of Felt

See Figure 7. Follow this procedure to install a new spool of felt:

1. Remove the locking nut (2) retaining the hub of the felt spool (1) tothe felt spool shaft.

2. Remove the felt spool.

3. Install a new felt spool.

4. Replace the nut. The nut has a spring-loaded ball and does notactually thread onto the shaft, but is used solely to lock the felt spoolin place.

2318012A

1

2

Fig. 7 Replacing the Felt Spool

1. Felt spool 2. Locking nut



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Install the solvent brush system within close proximity to the felt wickdispenser. You may place the pressure pot outside of the robotenclosure so that it is easily accessible.

See Figure 4. Follow these procedures to install the solvent brushsystem:

1. Attach a 1/4-in. OD PTFE fluid line (4) from the five-gallon solventpressure pot (3) to the solvent valve on the felt wick dispenser. Thisline supplies solvent to the brushes. The adjustable flow rate istypically set to 30–40 cc/minute. Contact your Nordson Corporationrepresentative for assistance, if needed.

NOTE: The fittings for the 1/4-in. OD line are nickel-plated brass witha plastic ferrule. Install as follows:

a. Cut the end of the tubing squarely.

b. Check the fitting for debris and clean, as necessary.

c. Loosen the nut with ferrule. Push the tubing on until it bottoms.Tighten it finger tight, then use a 7/16-in. wrench to tighten it onefull turn past finger tight.

2. Supply 0.3–0.7 bar (5–10 psi) filtered air supply (or nitrogen) to thepressure pot at the air inlet elbow (1). The regulator (2) on thepressure pot is factory-set to approximately 0.3 bar (5 psi).

3. Locate a purge bucket below the solvent brushes to catch runoff fromthe brushes. Primer can also be purged from the system into thisbucket.

The operation of the Drip and Drag applicator tool with felt wick dispenseris dependent upon the system in which it is installed. Consult the systemoverview manual provided or contact your Nordson representative forinformation about component operation.


Table 3 lists only the most basic maintenance procedures for the Drip andDrag applicator tool, felt wick dispenser, and solvent brush system. Referto the system overview manual and any maintenance schedules providedby your Nordson Corporation representative for more in-depthmaintenance information.


4. Operation

5. Maintenance



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Table 3 Maintenance Task Schedule

Frequency Component Maintenance Task

At everybreak

Fiber optics Keep the fiber optics clean. If these components become fouled withblack primer, they can give false readings resulting in shutdown or alarmconditions. Refer to Cleaning the Fiber Optic Sensor in the Repairsection for fiber optic cleaning procedures.

Gripper jaws, loadrods, and load springs

Clean using a stiff brush or plastic pick to remove excess black primer.

Gun tips Ensure that the gun tips are relatively free of black primer. Clean themwith a soft brush.

Solvent brush system Check the brushes for signs of deterioration.

Pulse the solvent brush solenoid to wet the nozzle brushes and ensureproper operation (at the start of each shift).

Daily Felt wick dispenser Clean residual felt lint from the moving components. Loosen the lint witha soft brush and blow away with shop air.

Wipe any lint that has settled on a lubricated surface away with a softcloth. Re-lubricate the surfaces after cleaning with standardpetroleum-based lubricant.

Solvent brush system Check the system for leaks.

Weekly Gripper jaws, loadrods, and load springs

Clean extensively to remove felt lint and black primer build-up. Using awire wheel or similar device, remove the residual black primer from thegripper jaws. Replace when worn.

Solvent brush system Replace the solvent brushes.

Refill the pressure pot with MEK. (This is done every five working days.)

Air knife (on applicatortool)

Verify 0.07–0.1 bar (1–1.5 psi).

Hoses Check hoses for kinks and/or abrasion.

Periodically Blade set Lubricate the grease fittings in the blade set with standardpetroleum-based lubricant.

Black primer regulator Replace every two weeks to two months, depending on the duty cycle.Replace the regulator whenever it cannot maintain its pressure setting.

Solvent brush system Replace the fittings, as needed.

Every ThreeMonths

Solvent brush system Rebuild or replace the solvent dispense gun.

Every SixMonths

Solvent brush system Replace the solvent lines.

Annually Solvent brush system Replace the needle valve at the brush manifold.



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This section contains troubleshooting procedures. These procedurescover only the most common problems that you may encounter. If youcannot solve the problem with the information given here, contact yourlocal Nordson representative for help.

Problem Possible Cause Corrective Action

1. No felt Gripper jaws sticking Clean or replace the gripper jaws.

Gripper jaws not grabbing felt Blow off excess lint from gripper jaws.

Check cutting blades at felt feeder.

Abrade gripper jaws.

Check robot/felt feeder timing.

Determine if felt is too smooth andchange felt types, as necessary.

No felt in dispenser Replace the empty spool.

Pneumatic problems Troubleshoot system pneumatics usingthe pneumatic schematics provided withthe system documentation.

Felt can not feed (felt widthadjustment too tight)

Adjust the width of felt accepted bydispenser. Refer to Table 2 (Felt WickDispenser Adjustments) for procedure.

Felt curling over Adjust the felt guide above the bladeset. Refer to Table 2 (Felt WickDispenser Adjustments) for procedure.

6. Troubleshooting




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Problem Corrective ActionPossible Cause

2. Black primer notdispensing

No fluid pressure Check operation of diaphragm pumpand troubleshoot pump, as necessary,using pump manual.

ZCN nozzle clogged and not opening Clean ZCN gun nozzle. Troubleshootgun operation further, as necessary,using the ZCN Dispensing Gun manual.

Dual filter assembly (in primer deliverysystem) clogged

Replace the clogged filter. Refer to thePrimer Delivery System manual for moreinformation.

Material activated/solidified Purge system with MEK to cleansesettled out primer from components.

NOTE: MEK will not dissolve curedblack primer.

3. Fiber optic fault Fluid stream misaligned Increase fluid pressure or adjust GUNON/OFF times.

Fiber optic fouling Gently clean the fiber optics with MEK orother solvent applied with a soft, cleancloth.

Cable broken Check fiber optic cable and replace, ifnecessary.



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1. Excessively dry brushes Failed gas pressure regulator at thesolvent pot (solvent not flowing tobrush or not actuated)

Replace the regulator.

Low fluid pressure Check fluid pressure and level. Adjustor refill, as necessary.

NOTE: Fluid pressure is controlled bymeans of gas pressure in the solventpot. Adjust gas pressure at the pot tocontrol the fluid pressure.

Solvent valve not actuating Replace the solvent valve.

Pilot air solenoid not working Replace the solenoid.

2. Excessively wet brushes Dispense gun jammed in openposition

Replace the gun.

Improperly programmed dispensegun

Adjust the GUN ON/OFF times.

Too high fluid pressure (regulatorfailing)

Check fluid pressure and adjust, asnecessary.

If adjustment is futile, replace gasregulator at the pressure pot.




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1. No felt Out of felt Replace the empty spool.

Felt not indexing (felt shuttle bindingor felt slipping in slide)

Adjust the width of felt accepted bydispenser. Refer to Table 2 (Felt WickDispenser Adjustments) for procedure.If thickness of felt is problematic, switchto a thinner felt.

If felt width and thickness are withintolerance, repair the felt shuttlemechanism or contact your NordsonCorporation representative.

2. Felt cutting roughly Worn blades Replace the blade assembly.

3. Actuatorsmalfunctioning

Solenoid valves failed Replace solenoid valves.

Shop air off Verify that air supply to actuator ispresent.

4. Failure of pneumaticsolenoids to activate

Electrical failure Check for open electrical circuits, shorts,or software errors. Correct, asnecessary.

Air supply off or low Check air supply to solenoids andadjust, as necessary.

5. Actions occur out ofsequence or not at all

Electrical failure Check for open electrical circuits, shorts,or software errors. Correct, asnecessary.

Switched pneumatic lines Refer to the pneumatic diagram in thesystem documentation provided andcorrect lines, as necessary.

Felt Wick Dispenser



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The following procedures detail the replacement or repair of theserviceable components of the applicator tool.

NOTE: Remove the applicator tool from operation but not from the robotor stationary mounting before performing repair procedures.

Removing the Applicator Tool from Operation

Follow these steps to remove the applicator tool from operation:

1. Initiate the SERVICE program from the robot (to move the applicatortool and robot arm to an accessible position).

2. Lock out the applicator tool from all air and fluid pressure.

3. Bleed all fluids and air pressure.

4. Take care of all system recirculation needs, as specific to yourinstallation.

7. Repair




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Cleaning the Fiber Optic Sensor

See Figure 8. Use the following procedures when cleaning the fiber opticsensor:

1. Remove the fiber optic cable (2) from the sensor bracket (7) at thesingle end of the cable.

CAUTION: The face of the fiber optic sensor is very easilydamaged. Do not use metal scrapers or picks of any sort toremove residual material from the face of the sensor.

2. Use a plastic scraper to remove any hardened residual primer fromthe face of the fiber optic sensor (3).

3. Lightly polish the end of the sensor using a soft cloth.

4. Visually inspect the end of the sensor to ensure that there is noresidual primer, which can foul the sensor.

5. Install the sensor into the bracket. Tighten the screw collar.

6. Make sure that the sensor can rotate within the bracket. Loosen thescrew collar if necessary.

Replacing the Fiber Optic Cable

See Figure 8. The fiber optic cable eventually becomes fouled ordamaged to the point where it will continually send out false readings.When this occurs, you must replace the cable.

Use the following procedures when replacing the fiber optic cable (2):

1. Remove the fiber optic cable from the sensor bracket (7) at the singleend of the cable (adjacent to the dispensing gun).

2. Disconnect the fiber optic cable from the cable switch (1) byunscrewing the two plastic collars.

3. Connect the new cable at the switch end first. Polarity is not relevant.Tighten the retention nuts to finger tight.

4. Route and install the single end of the fiber optic cable into the sensorbracket. Tighten the screw collar.

5. Make sure that the sensor can rotate within the bracket. Loosen thescrew collar if necessary. The brass retention nut can be retainedwith PTFE pipe tape.



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Replacing the Fiber Optic Cable (contd)

2813005A

17 18

19

20

15

1

2

3

4

5

6

11

8913812 10

14

6

3

2

115

16

77

Fig. 8 Drip and Drag Applicator Tool Repair

1. Fiber optic cable switch2. Fiber optic cable3. Fiber optic sensor4. Clear primer gas regulator valve5. Clear primer ZCN module6. Socket screw (10-32)7. Sensor bracket

8. Socket head screw (5-40)9. Socket head set screw (6-32)

10. Load spring11. Socket head screw (6-32)12. Load rod13. Gripper jaws14. Black primer ZCN module

15. Connectors16. Tubing17. Plastic ferrules18. Black primer fluid regulator19. Nipple20. Bulkhead



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Replacing the Felt Gripper Jaws

See Figure 8. Use the following procedures when removing andreplacing the gripper jaws (13):

1. Using a 3/32 hex bit, remove the 5-40 UNC socket head cap screw (8)from the gripper jaw.

2. Using a 7/64 hex bit, remove the 6-32 UNC socket head capscrew (11) from the gripper jaw.

3. Remove the gripper jaws from the pneumatic gripper.

4. Using a wire wheel or similar device, remove the residual blackprimer from the gripper jaws.

5. Remove the load rods (12) and/or springs (10):

a. Place the gripper jaws in a vice. Using a 1/16 hex key, remove the6-32 UNC set screw (9). It may be necessary to remove curedblack primer first. A fluidized bed cleaner or lacquer thinner soakcan be used to aid in removal of cured black primer.

b. Using pliers or locking pliers, remove the load rods or load springsfrom the gripper jaws. This may require using a sharp instrumentto remove any residual black primer.

Replacement of new jaws is the reverse of removal. It is generallysuggested that new fasteners be used when installing new gripper jaws.

Use the following torque values when reinstalling the gripper jaws:

� Tighten the set screws and 6-32 UNC screws to 1.1 ± 0.1 N•m (10 ± 1 in.-lb).

� Tighten the 5-40 UNC socket head cap screws to 0.9 ± 0.1 N•m (8 ± 1 in.-lb).



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Removing the Clear and Black Dispensing Modules

See Figure 8. Follow this procedure to remove and replace the clear andblack primer dispensing modules (5 and 14):

1. Using a 5/32 hex bit, remove the 10-32 socket screws (6) that attachthe dispensing modules to the applicator tool.

2. Refer to the ZCN Dispensing Gun manual for more completeinformation concerning the dispensing modules (including spare partsand repair procedures).

Replacing the Black Primer Fluid Regulator

See Figure 8. Following are the procedures to replace the black primerfluid regulator (18):

NOTE: Black primer should be kept in circulation unless the entiresystem is being serviced. If you are performing system service, replacethe fluid lines once you have drained the black primer from the systemand flushed it with MEK.

1. Remove inlet fluid pressure to the black primer fluid regulator.

2. Disconnect the inlet circulating fluid lines (16) from the PTFEfittings (17) at the top of the black primer fluid regulator.

3. Remove the black primer fluid regulator from the nipple (19)connected to the applicator tool bulkhead (20).

NOTE: At this point, black primer will probably leak out of the regulatorand nipple. Take care to wipe away all spilled black primer; it will cure inseconds.



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Replacing the Black Primer Fluid Regulator (contd)

4. Inspect and replace the connectors, ferrules, and tubing asnecessary. Install the new tubing as follows:

a. Cut two new pieces of 1/4-in. PTFE tubing squarely to match thelength of tubing removed earlier.

b. Replace the fittings. The nuts and ferrules are retained on the oldtubing.

c. Push the tubing into the two ferrules at the top of the regulator.Tighten the nuts on the fittings to finger tight. Using a 7/16 wrench,tighten the fittings one turn beyond finger tight.

d. Route and connect the tubing to the two connectors located onthe applicator tool bulkhead plate.

NOTE: The plastic ferrules deform and could lead to leakage if notreplaced each time lines are changed.

5. Check all connections and return the back primer fluid regulator tooperation.

Purging the Clear Primer Fluid Line

See Figure 8. Actuate the valve (4) on the side of the clear primermanifold to purge the clear primer line of gas. Bubbles in the primer linecan cause inconsistent fluid delivery.



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This section details the repair procedures for the replaceablecomponents on the felt wick dispenser.

Replacing the Blade Set

See Figure 9. Use the following procedure to replace the blade set:

1. Using a 5/32 hex bit, remove the 10-32 UNF socket head capscrews (1) that secure the felt shear blade (5) and the felt guide (2) tothe blade way (7).

2. Using a 3/16 hex bit, remove the 1/4-20 UNC socket head capscrews (9) that retain the cutting blade to the end of the pneumaticactuator.

3. Apply standard petroleum-based lubricant to the zirk-type greasefittings (3) in the blade retainers (4 and 8). Lubricate until grease canjust be seen coming from the joint between the moving blade and itsholder. This is sufficient lubrication for a light coating.

4. Install the new felt shear blade and tighten the 1/4-20 UNC screws to8.8 � 0.9 N•m (78 � 8 in.-lb) using the 3/16 hex bit.

5. Apply a light coating of grease to internal surfaces of the bladeretainers.

6. Install the blade retainers (4) onto the dowel pins (6) and tighten the10-32 UNF screws to 3.7 � 0.3 N•m (33 � 3 in.-lb) using the 5/32hex bit. Ensure that the felt guide is retained by the 10-32 screws.

7. Apply air pressure to the valve pack and manually actuate the bladeactuator prior to verify proper action of the blade set.

Felt Wick Dispenser



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2813006A

1

2

4

5

6

7

8

9

3

3

Fig. 9 Replacing the Blade Set

1. Socket head cap screws (10-32)2. Felt guide3. Zirk-type grease fitting

4. Right-hand blade retainer5. Felt shear blade6. Dowel pin

7. Blade way8. Left-hand blade retainer

9. Socket head cap screw (1/4-20)



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Replacing the Felt Shear Cylinder

See Figure 10. Follow these instructions to remove and replace the feltshear cylinder on the felt wick dispenser.

1. Using a 1/4-in. hex bit, remove the 5/16-18 socket screws (9 and 11)that retain the felt shear cylinder mount (10).

NOTE: The 5/16-18 socket screws are two different lengths. Takecare to note which screws belong in which ports for reassembly.

2. Remove the felt shear cylinder mount.

3. Remove the felt shear cylinder (12).

4. Install a new felt shear cylinder.

5. Reinstall the felt shear cylinder mount.

6. Using a 1/4-in. hex bit, reinstall the 5/16-18 socket screws. Tighten thescrews to 15.6 � 1 N•m (138 � 10 in.-lb).



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2813010A

6

6 7

6

5

4

2

11

9

8

3

8

10

12

1 1

12

1

Fig. 10 Replacing the Felt Shear Cylinder, Felt Clamp Cylinder, and Felt Shuttle Slide

1. 1/4-20 socket screws

2. Fore clamp3. 10-32 socket screws4. Felt shuttle slide

5. Felt clamp cylinder (lower)6. Aft felt clamp cylinder mount7. Felt clamp cylinder (upper)8. 10-32 socket screws

9. 5/16-18 (x 0.750-in.) socket screws

10. Felt shear cylinder mount

11. 5/16-18 (x 1.00-in.) socket screws

12. Felt shear cylinder



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Replacing the Lower Felt Clamp Cylinder

See Figure 10. Follow these instructions to remove and replace thelower felt shear cylinder on the felt wick dispenser.

1. Using a 5/32 hex bit, remove the 10-32 socket screws (8) that retainthe aft felt clamp cylinder mount (6).

2. Remove the aft felt clamp cylinder mount.

3. Remove the lower felt clamp cylinder (5).

4. Install a new felt clamp cylinder.

5. Reinstall the aft felt clamp cylinder mount.

6. Using a 5/32 hex bit, reinstall the 10-32 socket screws. Tighten thescrews to 3.7 � 0.3 N•m (33 � 3 in.-lb).

Replacing the Upper Felt Clamp Cylinder

See Figure 10. Follow these instructions to remove and replace theupper felt shear cylinder on the felt wick dispenser.

NOTE: If you have the removed the felt shear clamp, you can removethe upper felt clamp cylinder using the same procedure for removing thelower felt clamp cylinder. Otherwise, use the following procedures.

1. Using a 5/32 hex bit, remove the 10-32 socket screws (3) that retainthe fore clamp (2).

2. Remove the fore clamp.

3. Remove the upper felt clamp cylinder (7).

4. Install a new felt clamp cylinder.

5. Reinstall the fore clamp.

6. Using a 5/32 hex bit, reinstall the 10-32 socket screws. Tighten thescrews to 3.7 � 0.3 N•m (33 � 3 in.-lb).



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Replacing the Felt Shuttle Slide

See Figure 10. Follow these instructions to remove and replace the feltshuttle slide on the felt wick dispenser.

1. Using a 3/16 hex bit, remove the 1/4-20 socket screws (1) that retainthe felt shuttle slide (4) to the felt wick dispenser.

2. Remove the felt shuttle slide.

3. Install a new felt shuttle slide.

4. Using a 3/16 hex bit, reinstall the 1/4-20 socket screws. Tighten thescrews to 8.8 � 0.8 N•m (78 � 7 in.-lb).

The following components are the repairable or replaceable items of thesolvent brush system:

Replacing the Solvent Brushes

See Figure 3. Follow these procedures to replace the solventbrushes (8):

1. Using pliers, locking pliers, or a pipe wrench, unscrew the brushesfrom their manifold.

CAUTION: The brush bodies are aluminum and they arescrewed into steel fittings. Take care not to damage the brushthreads when screwing them into the manifold.

2. Screw in the replacement brushes. Tighten them hand tight. Uselocking pliers to tighten the brushes on full turn past hand tight.

3. Using scissors, trim the bristles of the brushes into a ball-shapedpattern, with the longest fibers at the center of the ball. This will helpkeep the brush bristles from splaying to maximize the effectiveness ofthe brushes.




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To order parts, call the Nordson Customer Service Center or your localNordson representative. Use this five-column parts list, and theaccompanying illustration, 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 six-digit number in the Part column is the Nordson Corporation partnumber. A series of dashes in this column (- - - - - -) means the partcannot be ordered 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

— 000 000 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.

8. Parts

Using the Illustrated PartsList



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Following is a list of replaceable components for all three models of Dripand Drag applicator tool: clear and black primer applicator tool, blackprimer applicator tool (single), and clear primer applicator tool (single).All three applicator tools share the same basic components. Oneillustration, showing the clear and black primer applicator tool, is used toportray the components in all three guns.

See Figure 11.

Item Part Part Part Description Quantity Note

— 323 272 Tool, applicator, clear and black, screw-in fiber optic 1

— 323 274 Tool, applicator, black single, screw-in fiber optic 1

— 323 275 Tool, applicator, clear single, screw-in fiber optic 1

1 142 329 142 329 142 329 � Sensor, fiber optic, 10–30 Vdc 1 A

2 228 571 228 571 � Module, clear and black, H200, 0.020-in., ZCN 1

3 228 599 � Bracket, sensor, screw, right-side 1

4 981 032 981 032 981 032 � Screw, socket set, 6-32 x 3/32 4 B

5 282 278 282 278 � Spring, comp, 1.500, 0.240, 0.042 2

6 282 287 282 287 282 287 � Screw, socket, 6-32 x 0.750, bl, gr 2 C

7 - - - - - - - - - - - - � Pin, dowel, 0.250 x 1.000, h&g 2

8 308 693 308 693 308 693 � Gripper, felt, wide 2

9 282 279 282 279 282 279 � Screw, socket, head, 5-40 x 0.75 bl 2 C

10 228 600 228 600 228 600 � Bracket, sensor, screw, left-side 1

11 228 570 228 570 � Module, clear and black, H200, 0.032-in., ZCN 1

12 228 601 228 601 228 601 � Cable, fiber optic & nut assembly 1 A

13 119 139 119 139 � Regulator, fluid 1

NS 900 464 900 464 900 464 � Adhesive, threadlocking AR

NOTE A: A quantity of two is required for the clear and black primer applicator tool, part 323 272.

B: A quantity of two is required for the clear primer (single) applicator tool, part 323 275.

C: A quantity of one is required for the black primer (single) applicator tool, part 323 274.

AR: As Required

NS: Not Shown

Drip and Drag ApplicatorTools



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2813007A

13

1

2

3

6

10 4897 5

11

12

Fig. 11 Clear and Black Primer Applicator Tool Parts

Drip and Drag ApplicatorTools (contd)



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See Figures 12 and 13.


— 295 972 Feeder, felt, with solvent brush 1

1 133 482 � Brush, round, 3/4 nylon 2

2 276 119 � Module, H200, adjustable, service 1

3 332 977 � Kit, rebuild, felt, blade, dispenser AR

4 320 987 � Module, valve assembly, 11-station 1

5 281 850 � Slide, felt shuttle 1

6 230 598 � Cylinder, felt clamp 2

7 238 372 � Cylinder, felt shear 1

NS 296 274 � Cable, fiber optic 6

NS 296 275 � Sensor, fiber optic, thru scan 3

NS 296 263 � System, solvent brush 1 A

NOTE A: Refer to Solvent Brush System Parts for more information.

AR: As Required

NS: Not Shown

Felt Wick Dispenser withSolvent Brush System



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2813008A

1

3

4

2

Fig. 12 Felt Wick Dispenser Parts

Felt Wick Dispenser withSolvent Brush System (contd)



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2813013A

6

6

5

7

Fig. 13 Felt Wick Dispenser Parts


E 1999 Nordson CorporationAll rights reserved

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See Figure 14.


— 296 263 Pot, pressure assembly, 5-gallon 1

1 146 133 S Tubing, 1/4-in., PTFE AR

2 971 414 S Elbow, 1/4 tube x 1/8 NPT NP 1

3 973 626 S Bushing, 1/4 x 1/8 stainless steel 1

4 901 090 S Ball valve, 1/4 1

5 973 029 S Nipple, hex, 1/4, stainless steel 1

6 973 154 S Elbow, street, 1/4, stainless steel 1

7 973 410 S Plug, 1/4 NPT 2

8 144 940 S Regulator, 0--10 psi 1

9 972 183 S Elbow, 3/8 tube x 1/4 NPT 1

10 972 684 S Adapter, 1/4 x 1/8 NPT 1

11 153 735 S Gauge, 0--15 psi 1

12 973 037 S Nipple, hex, 1/4 1

13 228 605 S Pressure vessel 1

AR: As Required

Solvent Brush System Parts



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2813014A

13

1

10

12

11

98

6543

2

7

Fig. 14 Solvent Brush System Parts



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Documents

Drip and Drag Applicator Tool with Felt Wick Dispenseremanuals.nordson.com/automotive/zfiles/331287A.pdf · Drip and Drag Applicator Tool with Felt Wick Dispenser Customer Product