Instruction Sheet Part 321551B E 2002 Nordson Corporation Manual 42-MODULE-IS-01 P/N 321551B Three-Way Dispensing Modules Introduction This instruction sheet provides troubleshooting, repair, and parts information for the three-way dispensing modules that can be installed on metering applicators. Table 1 provides an overview of available three-way modules and Figure 1 provides an illustration of the modules. Refer to the metering applicator manual for complete installation, operation, maintenance, repair, and parts information for your metering applicator. NOTE: Nordson Corporation recommends inserting this instruction sheet in the metering applicator manual. Table 1 Overview of Three-Way Modules Air-Open, Spring-Close Modules Part Number Description Configuration Application 327917 CF200 (Controlled Fiberization) Straight Spray (see Note A) 296640 Right-angle Air-Open, Air-Close Modules Part Number Description Configuration Application 321433 CF200 Straight Spray (see Note A) 321441 CC200 (Control Coat) Straight 1023499 Universal (UM3) snuff-back (S N B) Straight Spray or bead (see Note A) 1029070 (See Note B) Right-angle 1023197 EP11 snuff-back Straight Slot coating (see Note C) 1014663 Recirculation Not applicable Recirculation (see Note D) Blank Module Part Number Description Configuration Application 1003647 Blank (or block-off) Not applicable Blocking (see Note E) NOTE A: In spray applications, heated pattern air flows through the module and, depending on the nozzle or die being used, causes the adhesive exiting the module to form a spray pattern. In bead applications, no heated pattern air is used. B: The Universal module, either directly or through the use of an adapter, can dispense adhesive in a variety of applications, including bead, CF, meltblown (UMB), and Summit (USM) applications. Figure 2 shows the adapters and dies that can be used with the Universal module. C: In slot coating applications, the modules feed adhesive to a separately installed die set. D: A recirculation module does not dispense adhesive—it returns adhesive to the applicator manifold. E: A blank module does not dispense or recirculate adhesive—it blocks adhesive flow from a module position.
Transcript
Instruction Sheet
Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
P/N 321551B
Three-Way Dispensing Modules
Introduction This instruction sheet provides troubleshooting, repair, and parts informationfor the three-way dispensing modules that can be installed on meteringapplicators. Table 1 provides an overview of available three-way modulesand Figure 1 provides an illustration of the modules. Refer to the meteringapplicator manual for complete installation, operation, maintenance, repair,and parts information for your metering applicator.
Part Number Description Configuration Application327917 CF200 (Controlled Fiberization) Straight Spray (see Note A)
296640
( )
Right-angle
p y ( )
Air-Open, Air-Close Modules
Part Number Description Configuration Application321433 CF200 Straight Spray (see Note A)
321441 CC200 (Control Coat) Straight
p y ( )
1023499 Universal (UM3) snuff-back(S N B)
Straight Spray or bead (see Note A)
1029070
( )(See Note B) Right-angle
p y ( )
1023197 EP11 snuff-back Straight Slot coating (see Note C)
1014663 Recirculation Not applicable Recirculation (see Note D)
Blank Module
Part Number Description Configuration Application1003647 Blank (or block-off) Not applicable Blocking (see Note E)
NOTE A: In spray applications, heated pattern air flows through the module and, depending on the nozzle or diebeing used, causes the adhesive exiting the module to form a spray pattern. In bead applications, noheated pattern air is used.
B: The Universal module, either directly or through the use of an adapter, can dispense adhesive in a varietyof applications, including bead, CF, meltblown (UMB), and Summit (USM) applications. Figure 2 showsthe adapters and dies that can be used with the Universal module.
C: In slot coating applications, the modules feed adhesive to a separately installed die set.
D: A recirculation module does not dispense adhesive—it returns adhesive to the applicator manifold.
E: A blank module does not dispense or recirculate adhesive—it blocks adhesive flow from a moduleposition.
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
Figure 2 Adapters and dies that can be used with Universal snuff-back modules
1. Bead adapter2. CF adapter
3. Meltblown die (no adapterrequired)
4. Summit die (no adapterrequired)
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Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
Functional Operation Dispensing modules apply adhesive to a substrate. Unlike two-waymodules, three-way modules recirculate unapplied adhesive back to thefeed side of the applicator pump, eliminating the need for an additional setof recirculation modules. Three-way modules have either air-open,spring-close (AOSC) or air-open, air-close (AOAC) operation. The functionaloperation of three-way modules is described in the following paragraphsand illustrations.
AOSC Modules When air is applied to an AOSC module, pneumatic pressure lifts a piston,causing the module to open so that adhesive can flow from it. When the airsupply shuts off, a spring returns the piston to the closed position, shuttingoff the flow of adhesive and recirculating the adhesive to the feed side of theapplicator pump. Figure 3 shows the flow of adhesive and air through thedifferent types of AOSC modules.
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Spring close
Air open
Adhesivereturn
Adhesive
Pattern air
supply
Spring close
Air open
Adhesivereturn
Adhesive
Pattern air
supply
21
Figure 3 Flow of adhesive and air through AOSC modules
Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
AOAC Modules AOAC modules have an air-open port and an air-close port. When air isapplied to the air-open port, pneumatic pressure actuates a piston, causingthe module to open so that adhesive can flow from it. When the air to theair-open port shuts off and the air to the air-close port is applied, the pistonreturns to the closed position, shutting off the flow of adhesive andrecirculating the adhesive to the feed side of the applicator pump. Figure 4shows the flow of adhesive and air through the different types ofAOAC modules.
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Air close
Air open
Adhesivereturn
Adhesive
Pattern air
supply
Air close
Air open
Adhesivereturn
Adhesive
Pattern air
supply
Air open
Air close
Adhesivereturn
Adhesivesupply
Air open
Air close
Adhesivereturn
Adhesivesupply
21 3
4 5
Air open
Air close
Adhesivereturn
Adhesivesupply
Figure 4 Flow of adhesive and air through AOAC modules
Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
Pattern Control Troubleshooting Use this troubleshooting table if you are experiencing adhesive patterncontrol problems. For all other troubleshooting, refer to the meteringapplicator manual.
NOTE: The problems included in this troubleshooting table are the mostcommon problems that occur in spray applications. Some of the problemswill not apply to the application you are troubleshooting. Contact yourNordson representative as needed for troubleshooting assistance.
NOTE: To aid in detecting pattern control problems, direct a strobe light onthe adhesive as it flows onto the product.
Problem Possible Cause Corrective Action
1. Adhesive flow notcutting off properly,causing a pooradhesive pattern
Worn or charred module balland/or seat
Replace the module. Refer toReplacing a Module later in thisinstruction sheet.
System pressure too high Decrease the system pressure. Referto the melter manual.
2. Beginnings and endsof adhesive patternsfrom multi-moduleapplicator not aligned(CF200 modules only)
Modules not synchronized (loadingscrews not properly adjusted)
Adjust the module loading screws.Refer to SynchronizingCF200 Module Output later in thisinstruction sheet.
3. Adhesive pattern onone module toonarrow
System pressure too high Reduce the system pressure or cleanthe nozzles/dies. Refer to CleaningNozzles/Dies later in this instructionsheet.
Blocked air passage in nozzle/die Reduce the system pressure or cleanthe nozzles/dies. Refer to CleaningNozzles/Dies later in this instructionsheet.
Blocked air passage in module Replace the module. Refer toReplacing a Module later in thisinstruction sheet.
4. Adhesive pattern onone module too wide
Damaged nozzle/die Replace the nozzle/die. Refer toRemoving or Installing a Nozzle/Dielater in this instruction sheet.
Blocked adhesive passages innozzle/die
Clean or replace the nozzle/die. Referto Cleaning Nozzles/Dies or toRemoving or Installing a Nozzle/Dielater in this instruction sheet.
5. Adhesive pattern onone module off center
Blocked air passage in nozzle/die Clean or replace the nozzle/die. Referto Cleaning Nozzles/Dies or toRemoving or Installing a Nozzle/Dielater in this instruction sheet.
Continued on next page
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
Pattern Control Troubleshooting (contd)
Problem Possible Cause Corrective Action
5. Adhesive pattern onone module off center(contd.)
Partially blocked adhesive passagein nozzle/die
Clean or replace the nozzle/die. Referto Cleaning Nozzles/Dies or toRemoving or Installing a Nozzle/Dielater in this instruction sheet. Ifcleaning or replacing the nozzle/diedoes not improve the pattern, checkfor blockages in the module,applicator, or hose.
6. Adhesive pattern onone module off center
Blocked air passage in nozzle/die Clean or replace the nozzle/die. Referto Cleaning Nozzles/Dies or toRemoving or Installing a Nozzle/Dielater in this instruction sheet.
Partially blocked adhesive passagein nozzle/die
Clean or replace the nozzle/die. Referto Cleaning Nozzles/Dies or toRemoving or Installing a Nozzle/Dielater in this instruction sheet. Ifcleaning or replacing the nozzle/diedoes not improve the pattern, checkfor blockages in the module,applicator, or hose.
7. Adhesive stream onan end moduleoriented towardcenter of applicator
Air currents in area near module Eliminate the air current
8. Droplets thrown fromadhesive stream orpattern breaking up
Pattern air pressure too high Decrease the pattern air pressure.
Adhesive output rate too low Increase the system pressure ortroubleshoot the output rate problemat the melter. Refer to the meltermanual. Check for blockages in thenozzle/die, applicator, or hose.
Heated zone temperature setpointstoo high
Adjust the temperature setpoints.Refer to the melter or temperaturecontroller manual.
Damaged nozzle/die (adhesiveleaking into air passages andbeing blown into the pattern)
Replace the nozzle/die. Refer toRemoving or Installing a Nozzle/Dielater in this instruction sheet.
Nozzle/die too far from product Shorten the distance between thenozzle/die and the product.
Adhesive patterns overlapping andinterfering with one another
Replace the nozzles/dies on themodules that are producing adhesivestreams that interfere with the othermodule adhesive streams.
Continued on next page
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Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
Corrective ActionPossible CauseProblem
9. Adhesive patterns onall modules toonarrow
Adhesive temperature setpointstoo low
Lower the temperature setpoints.Refer to the melter or temperaturecontroller manual.
Adhesive flow rate too high Decrease the system pressure ortroubleshoot the output rate problemat the melter. Refer to the meltermanual.
Pattern air pressure too low Increase the pattern air pressure.
Pattern air temperature too low Increase the temperature setpoint forthe heated air manifold zone(s). Referto the melter or temperature controllermanual. The temperature of thepattern air should match theapplication temperature of theadhesive.
10. Adhesive patterns onall modules too wide
Heated zone temperature setpointstoo high
Adjust the temperature setpoints.Refer to the melter or temperaturecontroller manual.
Adhesive flow rate too low Increase the system pressure ortroubleshoot the output rate problemat the melter. Refer to the meltermanual.
Pattern air pressure too high Decrease the pattern air pressure.
Pattern air temperature too high Decrease the temperature setpointfor the heated air manifold zone(s).Refer to the melter or temperaturecontroller manual. The temperature ofthe pattern air should match theapplication temperature of theadhesive.
Nozzle/die adhesive orifice toolarge
Change to a nozzle/die with a smalleradhesive orifice.
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
Module Procedures Use these procedures to adjust CF modules or to replace any module.
Synchronizing CF200 Module Output NOTE: This procedure applies only to CF200 modules. It does not apply toEP11 or Universal modules.
On CF200 modules, a loading screw located in the top of the module can beused to fine-tune the alignment of the adhesive patterns of multi-moduleapplicators, as shown in Figure 5.
CAUTION: Do not use the loading screw to increase or decrease theamount of adhesive output (flow rate). To change the flow rate, adjust themelter pump speed.
420405008
1
2
3 4
Figure 5 Results of CF200 module loading screw adjustments
1. Target area2. Pattern too long
3. Pattern too short4. Desired pattern length
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Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
To adjust a module loading screw:
See Figure 6. Loosen the locking nut (2) at the top of the module, turn theloading screw (1) with a screwdriver, and then tighten the locking nut. Turnthe loading screw as follows:
� To decrease the length of a pattern, turn the loading screwclockwise. This shortens the length at both ends of the pattern.
� To increase the length of a pattern, turn the loading screwcounterclockwise. This increases the length at both ends of thepattern.
NOTE: If the module loading screw is tightened too much, the modulewill not dispense any adhesive.
To return a loading screw to the factory setting, loosen the locking nut, turnthe screw clockwise until it bottoms out, back the screw out three full turns(counterclockwise), and tighten the locking nut.
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12
Figure 6 Location of the loading screw and locking nut on a CF200 module
1. Loading screw 2. Locking nut
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
Replacing a Module Follow this procedure to replace a module.
To remove a module: 1. To ease module removal, ensure that the adhesive in the system is
heated at least to the softening point.
2. Stop the melter and applicator pumps.
3. Shut off the module-actuating air.
4. (Spray applications only) Decrease the pattern air pressure. Leave justenough air pressure to prevent adhesive from entering the pattern airinlet on the module.
5. Relieve system pressure. Refer to the melter and metering applicatormanuals as needed.
6. Disconnect and lock out electrical power to the melter pump motor.
7. See Figure 7. Remove the two socket head screws from the front of themodule; then remove the module.
8. Remove the nozzle or die from the module.
NOTE: Nordson recommends cleaning nozzles/dies before installingthem on a new module. Refer to the the Cleaning Nozzles/Dies later inthis instruction sheet.
9. Wipe adhesive away from the adhesive ports on the applicator manifold.Take care not to wipe adhesive into any air ports.
420400015
Figure 7 Removing a module (CF200 straight module shown)
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Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
To install a module: 1. Install the clean nozzle or die on the new module.
2. Coat the new module O-rings with O-ring lubricant and place themsecurely in their grooves on the module.
3. Apply anti-seize lubricant to the module socket-head screws.
4. Secure the new module to the applicator manifold with the socket-headscrews. Tighten the screws to 9.5 N•m (7 ft-lb).
5. Restore the system to normal operation.
6. Test-fire the applicator into a drain pan or onto a piece of cardboard toensure proper module operation.
7. For best results, check the module screw torque again after theapplicator has reached operating temperature.
Nozzle/Die Procedures Use these procedures to remove, install, and/or clean nozzles/dies.
Removing or Installing a Nozzle/Die NOTE: This procedure does not apply to EP11 snuff-back modules.
Modules have several types of nozzle and die configurations. OnUniversal modules, an adapter may be required as well. Follow thisprocedure to remove or install nozzles, dies, and/or adapters as needed. Besure to refer to the appropriate illustration for your module.
To remove a nozzle/die: 1. To ease nozzle/die removal, ensure that the adhesive in the system is
heated at least to the softening point.
2. Stop the melter and applicator pumps.
3. Shut off the module-actuating air.
4. (Spray applications only) Decrease the pattern air pressure. Leave justenough air pressure to prevent adhesive from entering the pattern airinlet on the module.
5. Relieve system pressure. Refer to the melter and metering applicatormanuals as needed.
6. Remove the nozzle, die, and/or adapter (if applicable) using whicheverof the procedures in Table 2 is applicable to your applicator.
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
To remove a nozzle/die: (contd)
Table 2 Nozzle/Die Removal Procedures
Nozzle Type Removal Procedure See
CF disk Use a wrench to loosen the nozzle-retaining nut and thenremove the nozzle retaining nut and disk by hand.
NOTE: A CF disk nozzle is two-piece nozzle that consists of anozzle disk and a retaining nut.
Figure 8
CF unibody orsteel unibody
Use a wrench to loosen the nozzle and then remove the nozzleby hand.
NOTE: A CF unibody or steel unibody nozzle is a one-piecenozzle.
Figure 9
CC200 Remove the CC200 module (refer to Replacing a Module earlierin this section) and soak the lower part of the module in acleaning fluid. Do not allow the fluid to enter the top ports on theback of the module. Disassemble the dies and O-rings.
Figure 10
Universalsnuff-back
Remove a CF nozzle as indicated earlier in this table.
Remove a bead nozzle by using a wrench to loosen the nozzleand then removing the nozzle by hand.
Remove an adapter or die as follows:
1. Back the clamping screw all the way out until it stops.
2. Push the clamp toward the module to eject the adapter/die.
Figure 11
430100007
1
2
3
Figure 8 CF two-piece nozzle removal and correct assembly of nozzle components
1. Module threads 2. Disk 3. Retaining nut
Note: Nordson offers a special torque wrench for CF retaining-nut nozzles. Refer to Accessories later in this instructionsheet.
Note: A torque wrench should not be used to loosen or remove a nozzle. Doing so will cause the torque wrench tobecome uncalibrated.
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Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
430100006
Figure 9 CF unibody nozzle removal
Note: Nordson offers a special torque wrench for CF unibody nozzles. Refer toAccessories later in this instruction sheet.
Note: A torque wrench should not be used to loosen or remove a nozzle. Doing sowill cause the torque wrench to become uncalibrated.
420600004
1
2
4
3
5
6
7
Figure 10 CC200 die removal
1. Front air die2. Front air die O-ring3. Adhesive die O-ring4. Adhesive die
5. Die body6. Rear air die O-ring7. Rear air die
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
To remove a nozzle/die: (contd)
421400008W
3
1
5
6
4
2
Open Closed
Figure 11 Universal nozzle/adapter/die removal
1. Bead adapter2. Bead nozzle
3. CF adapter4. CF nozzle
5. Meltblown die6. Summit die
To install a nozzle/die: 1. Clean the mating surface where the nozzle/adapter/die will be seated.
2. Install the nozzle/adapter/die by reversing the removal procedure inTable 2. Tighten nozzles and fasteners to the torque specification shownin Table 3.
Table 3 Nozzle or Fastener Torque Specifications
Nozzle or Fastener Torque Specification
CF disk 3.4 N�m (30 in.-lb)
CF unibody or steel unibody 0.6 N�m (5 in.-lb)
CC200 die screws 3–4 N�m (25–32 in.-lb)
Three-Way Dispensing Modules 15
Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
Cleaning Nozzles/Dies Nozzles/dies should be cleaned weekly (or as needed) to prevent clogging.Follow this procedure to clean a nozzle/die.
1. Remove the nozzle/die. Refer to Removing or Installing a Nozzle/Dieearlier in this instruction sheet.
WARNING: Risk of explosion or fire. Use a controlled heating device, suchas a thermostatically controlled hot plate, to heat Nordson Type R fluid.Serious injury or property damage could result from uncontrolled heating ofthe fluid.
CAUTION: Risk of equipment damage. Do not use a wire brush (or a brushwith bristles harder than the nozzle/die) to clean nozzles/dies.
2. Clean the nozzle/die using one of the methods shown in Table 4. Useonly cleaning agents recommended by the adhesive supplier.
Table 4 Nozzle/Die Cleaning Methods
Cleaning Method Procedure
Nordson Type-R fluid a. Place the nozzle/die in a controlled heatingdevice containing Nordson Type-R fluidand heat it above the melting point of theadhesive.
b. Scrub the nozzle/die with a soft,non-metallic brush to remove debris.
Ultrasonic cleaner a. Use an ultrasonic cleaner filled with asolvent to clean the nozzle/die.
b. Scrub the nozzle/die with a soft,non-metallic brush to remove debris.
3. Blow air through the orifices in the nozzle/die.
4. Use the following methods to check the nozzle/die orifices forobstructions:
� For straight orifices, hold the nozzle/die up to the light. Light shouldbe visible through cleared orifices.
� For both straight and angled orifices, carefully use a pin-type probeto check the orifices for obstructions and/or to remove obstructionsfrom the orifices. If an orifice is clear, the probe should move easilythrough the orifice. Figure 12 illustrates the use of a pin-type probe.
5. Repeat steps 2–4 until all nozzle/die orifices are clear.
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Part 321551B � 2002 Nordson CorporationManual 42-MODULE-IS-01
Cleaning Nozzles/Dies (contd)
4300000011 2 3
Figure 12 Using a pin-type probe to check for and clear obstructions in nozzles/dies
1. One-piece nozzle (bead orCF unibody)
2. CF nozzle disk 3. Die (meltblown die shown)
6. Reinstall the nozzle/die. Refer to Removing or Installing a Nozzle/Dieearlier in this instruction sheet.
7. Restore the system to normal operation.
Three-Way Dispensing Modules 17
Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
Parts To order parts, call the Nordson Customer Service Center or your localNordson representative. Use these parts lists and illustrations to describeand locate parts correctly.
Accessories Part Description
901915 Nozzle cleaning kit
754766 Wrench, torque, CF disk nozzles
754767 Wrench, torque, CF unibody nozzles
900223 Lubricant, O-ring, 4 oz
900344 Lubricant, anti-seize, 8 oz can
Replacement Modules The following tables provide all the three-way module replacement partnumbers. The rest of this section provides a parts list and illustration for theavailable replacement parts for each module.
5 328422 Screw, socket, cap, M4 x 35, with O-ring 2
6 900223 Lubricant, O-ring, 4 oz AR
7 986039 Retaining ring, external, 18, E-ring 1
8 1023494 Clamp, die 1
9 1023493 Screw, clamp, die 1
10 940133 O-ring, Viton, 0.426 ID x 0.070 W in. 1
NOTE A: Order this part for a complete replacement module.
AR: As Required
421401007
1
2
10
3
4
4
6
6
6
9
7
8
5
Figure 19 Universal AOAC snuff-back right-angle module parts
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Part 321551B� 2002 Nordson Corporation Manual 42-MODULE-IS-01
Universal Module Adapters See Figure 20. For some Universal module applications, an adapter mustbe installed on the module. The following table provides the part numbersfor all available adapters.
NOTE: No adapter is required for meltblown and Summit applications.
