Nordson DH User manual

NORDSON CORPORATION DDAWSONVILLE, GEORGIA DUSA
www.nordson.com
DH Air Heater
Customer Product Manual
Part 1042733B
Issued 11/04

E2004 Nordson Corporation
All rights reserved
Part 1042733B
Nordson Corporation welcomes requests for information, comments and inquiries about its products.
General information about Nordson can be found on the Internet using the following address:
http://www.nordson.com.
Address all correspondence to:
Nordson Corporation
Attn: Nonwovens Marketing Department
12 Nordson Drive
Dawsonville, GA 30534
Notice
This is a Nordson Corporation publication which is protected by copyright. Original copyright date 2003.
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, AeroCharge, AquaGuard, Asymtek, Automove, Autotech, Baitgun, Blue Box, CanWorks, Century, CF, Clean Coat, CleanSleeve, CleanSpray,
ColorMax, Control Coat, Coolwave, Cross Cut, Cyclo-Kinetic, Dispensejet, DispenseMate, DuraBlue, Durafiber, Durasystem, Easy Coat, Easymove Plus,
Econo-Coat, e.DOT, EFD, ETI, Excel 2000, Fillmaster, FlexiCoat, Flexi-Spray, Flex-O-Coat, Flow Sentry, Fluidmove, FoamMelt, FoamMix, Heli-flow, Helix,
Horizon, Hot Shot, iControl, Isocoil, Isocore, Iso-Flo, JR, KB30, Kinetix, Little Squirt, Magnastatic, March, MEG, Meltex, Microcoat, Micromark, MicroSet,
Millennium, Mini Squirt, Moist-Cure, Mountaingate, MultiScan, Nordson, OmniScan, OptiMix, Package of Values, PatternView, PermaFlo, Plasmod,
PluraFoam, Porous Coat, PowderGrid, Powderware, Prism, ProBlue, Pro-Flo, ProLink, Pro-Meter, Pro-Stream, RBX, Rhino, Saturn, SC5, S. design stylized,
Seal Sentry, Select Charge, Select Coat, Select Cure, Slautterback, Smart-Coat, Solder Plus, Spectrum, Speed-Coat, Spraymelt, Spray Squirt,
Super Squirt, SureBead, Sure Coat, Sure-Max, Tela-Therm, Tracking Plus, Trends, Tribomatic, Ultrasaver, UniScan, UpTime, Veritec, VersaBlue,
Versa-Coat, Versa-Screen, Versa-Spray, Walcom, Watermark, and When you expect more. are registered trademarks of Nordson Corporation.
Accubar, Advanced Plasma Systems, AeroDeck, AeroWash, Apogee, AquaCure, ATS, Auto-Flo, AutoScan, BetterBook, Celero, Chameleon, Check Mate,
Controlled Fiberization, Control Weave, CPX, DispensLink, Dry Cure, DuraBraid, DuraCoat, DuraPail, Dura-Screen, Easy Clean, Eclipse, EcoDry,
E-Nordson, Equi=Bead, ESP, e Stylized, Exchange Plus, Fill Sentry, Gluie, HDLV, iFlow, iON, Iso-Flex, iTrend, iTRAX, KVLP, Lacquer Cure, Lean Cell,
Maxima, MicroFin, MicroMax, Minimeter, Multifil, OptiStroke, Origin, PatternPro, PCI, PluraMix, Powder Pilot, Powercure, Primarc, Printplus, Process Sentry,
Pulse Spray, PurTech, QuadCure, Ready Coat, Royal Blue, Scoreguard, Select Series, Sensomatic, Shaftshield, SheetAire, Spectral, Spectronic,
Speedking, Spray Works, Summit, Sure Brand, Sure Clean, SureWrap, Swirl Coat, Tempus, ThruWave, Trade Plus, Trak, TrueBlue, Ultra, Ultrasmart,
Universal, Vantage, Viper, Vista, Web Cure, and 2 Rings (Design) are trademarks of Nordson Corporation.
Designations and trademarks stated in this document may be brands that, when used by third parties for their own purposes,
could lead to violation of the owners’ rights.

Table of Contents i
Part 1042733B
E2004 Nordson Corporation
Table of Contents
Safety 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Alert Symbols 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Responsibilities of the Equipment Owner 2. . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Information 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instructions, Requirements, and Standards 2. . . . . . . . . . . . . . . . . . . . . .
User Qualifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applicable Industry Safety Practices 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intended Use of the Equipment 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instructions and Safety Messages 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Practices 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Practices 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance and Repair Practices 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Safety Information 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Shutdown 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Safety Warnings and Cautions 6. . . . . . . . . . . . . . . . . . . . . . . . .
Other Safety Precautions 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Aid 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Labels and Tags 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Heater Mounting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connection 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic Connections 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Check 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutdown 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater Replacement 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remove the Heater 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install the Heater 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor Replacement 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remove the Sensor 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install the Sensor 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Part 1042733B E2004 Nordson Corporation
Parts 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Heater Parts 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Body Assembly Parts 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cordset Pin Positions 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DH Air Heater 1
Part 1042733B
E2004 Nordson Corporation
DH Air Heater
WARNING: Allow only personnel with appropriate training and experience
to operate or service the equipment. The use of untrained or inexperienced
personnel to operate or service the equipment can result in injury, including
death, to themselves and others, and damage to the equipment.
Safety
Read this section before using the equipment. This section contains
recommendations and practices applicable to the safe installation,
operation, and maintenance (hereafter referred to as “use”) of the product
described in this document (hereafter referred to as “equipment”). Additional
safety information, in the form of task-specific safety alert messages,
appears as appropriate throughout this document.
WARNING: Failure to follow the safety messages, recommendations, and
hazard avoidance procedures provided in this document can result in
personal injury, including death, or damage to equipment or property.
Safety Alert Symbols
The following safety alert symbol and signal words are used throughout this
document to alert the reader to personal safety hazards or to identify
conditions that may result in damage to equipment or property. Comply with
all safety information that follows the signal word.
WARNING: Indicates a potentially hazardous situation that, if not avoided,
can result in serious personal injury, including death.
CAUTION: Indicates a potentially hazardous situation that, if not avoided,
can result in minor or moderate personal injury.
CAUTION: (Used without the safety alert symbol) Indicates a potentially
hazardous situation that, if not avoided, can result in damage to equipment
or property.

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Part 1042733B E2004 Nordson Corporation
Responsibilities of the Equipment Owner
Equipment owners are responsible for managing safety information,
ensuring that all instructions and regulatory requirements for use of the
equipment are met, and for qualifying all potential users.
Safety Information
SResearch and evaluate safety information from all applicable sources,
including the owner-specific safety policy, best industry practices,
governing regulations, material manufacturer’s product information, and
this document.
SMake safety information available to equipment users in accordance
with governing regulations. Contact the authority having jurisdiction for
information.
SMaintain safety information, including the safety labels affixed to the
equipment, in readable condition.
Instructions, Requirements, and Standards
SEnsure that the equipment is used in accordance with the information
provided in this document, governing codes and regulations, and best
industry practices.
SIf applicable, receive approval from your facility’s engineering or safety
department, or other similar function within your organization, before
installing or operating the equipment for the first time.
SProvide appropriate emergency and first aid equipment.
SConduct safety inspections to ensure required practices are being
followed.
SRe-evaluate safety practices and procedures whenever changes are
made to the process or equipment.

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User Qualifications
Equipment owners are responsible for ensuring that users:
Sreceive safety training appropriate to their job function as directed by
governing regulations and best industry practices
Sare familiar with the equipment owner’s safety and accident
prevention policies and procedures
Sreceive, equipment- and task-specific training from another qualified
individual
NOTE: Nordson can provide equipment-specific installation,
operation, and maintenance training. Contact your Nordson
representative for information
Spossess industry- and trade-specific skills and a level of experience
appropriate to their job function
Sare physically capable of performing their job function and are not
under the influence of any substance that degrades their mental
capacity or physical capabilities
Applicable Industry Safety Practices
The following safety practices apply to the use of the equipment in the
manner described in this document. The information provided here is not
meant to include all possible safety practices, but represents the best safety
practices for equipment of similar hazard potential used in similar industries.
Intended Use of the Equipment
SUse the equipment only for the purposes described and within the limits
specified in this document.
SDo not modify the equipment.
SDo not use incompatible materials or unapproved auxiliary devices.
Contact your Nordson representative if you have any questions on
material compatibility or the use of non-standard auxiliary devices.
Instructions and Safety Messages
SRead and follow the instructions provided in this document and other
referenced documents.
SFamiliarize yourself with the location and meaning of the safety warning
labels and tags affixed to the equipment. Refer to Safety Labels and
Tags at the end of this section.
SIf you are unsure of how to use the equipment, contact your Nordson
representative for assistance.

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Part 1042733B E2004 Nordson Corporation
Installation Practices
SInstall the equipment in accordance with the instructions provided in this
document and in the documentation provided with auxiliary devices.
SEnsure that the equipment is rated for the environment in which it will be
used and that the processing characteristics of the material will not
create a hazardous environment. Refer to the Material Safety Data
Sheet (MSDS) for the material.
SIf the required installation configuration does not match the installation
instructions, contact your Nordson representative for assistance.
SPosition the equipment for safe operation. Observe the requirements for
clearance between the equipment and other objects.
SInstall lockable power disconnects to isolate the equipment and all
independently powered auxiliary devices from their power sources.
SProperly ground all equipment. Contact your local building code
enforcement agency for specific requirements.
SEnsure that fuses of the correct type and rating are installed in fused
equipment.
SContact the authority having jurisdiction to determine the requirement for
installation permits or inspections.
Operating Practices
SFamiliarize yourself with the location and operation of all safety devices
and indicators.
SConfirm that the equipment, including all safety devices (guards,
interlocks, etc.), is in good working order and that the required
environmental conditions exist.
SUse the personal protective equipment (PPE) specified for each task.
Refer to Equipment Safety Information or the material manufacturer’s
instructions and MSDS for PPE requirements.
SDo not use equipment that is malfunctioning or shows signs of a
potential malfunction.

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Maintenance and Repair Practices
SPerform scheduled maintenance activities at the intervals described in
this document.
SRelieve system hydraulic and pneumatic pressure before servicing the
equipment.
SDe-energize the equipment and all auxiliary devices before servicing the
equipment.
SUse only new factory-authorized refurbished or replacement parts.
SRead and comply with the manufacturer’s instructions and the MSDS
supplied with equipment cleaning compounds.
NOTE: MSDSs for cleaning compounds that are sold by Nordson are
available at www.nordson.com or by calling your Nordson
representative.
SConfirm the correct operation of all safety devices before placing the
equipment back into operation.
SDispose of waste cleaning compounds and residual process materials
according to governing regulations. Refer to the applicable MSDS or
contact the authority having jurisdiction for information.
SKeep equipment safety warning labels clean. Replace worn or damaged
labels.
Equipment Safety Information
This equipment safety information is applicable to the following types of
Nordson equipment:
Shot melt and cold adhesive application equipment and all related
accessories
Spattern controllers, timers, detection and verification systems, and all
other optional process control devices
Equipment Shutdown
To safely complete many of the procedures described in this document, the
equipment must first be shut down. The level of shut down required varies
by the type of equipment in use and the procedure being completed.
If required, shut down instructions are specified at the start of the
procedure. The levels of shut down are:
Relieving System Hydraulic Pressure
Completely relieve system hydraulic pressure before breaking any hydraulic
connection or seal. Refer to the melter-specific product manual for
instructions on relieving system hydraulic pressure.

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Part 1042733B E2004 Nordson Corporation
De-energizing the System
Isolate the system (melter, hoses, guns, and optional devices) from all
power sources before accessing any unprotected high-voltage wiring or
connection point.
1. Turn off the equipment and all auxiliary devices connected to the
equipment (system).
2. To prevent the equipment from being accidentally energized, lock and
tag the disconnect switch(es) or circuit breaker(s) that provide input
electrical power to the equipment and optional devices.
NOTE: Government regulations and industry standards dictate specific
requirements for the isolation of hazardous energy sources. Refer to the
appropriate regulation or standard.
Disabling the Guns
All electrical or mechanical devices that provide an activation signal to the
guns, gun solenoid valve(s), or the melter pump must be disabled before
work can be performed on or around a gun that is connected to a
pressurized system.
1. Turn off or disconnect the gun triggering device (pattern controller, timer,
PLC, etc.).
2. Disconnect the input signal wiring to the gun solenoid valve(s).
3. Reduce the air pressure to the gun solenoid valve(s) to zero; then
relieve the residual air pressure between the regulator and the gun.
General Safety Warnings and Cautions
Table 1 contains the general safety warnings and cautions that apply to
Nordson hot melt and cold adhesive equipment. Review the table and
carefully read all of the warnings or cautions that apply to the type of
equipment described in this manual.
Equipment types are designated in Table 1 as follows:
HM = Hot melt (melters, hoses, guns, etc.)
PC = Process control
CA = Cold adhesive (dispensing pumps, pressurized container, and
guns)

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Table 1 General Safety Warnings and Cautions
Equipment
Type Warning or Caution
HM
WARNING: Hazardous vapors! Before processing any polyurethane
reactive (PUR) hot melt or solvent-based material through a
compatible Nordson melter, read and comply with the material’s
MSDS. Ensure that the material’s processing temperature and
flashpoints will not be exceeded and that all requirements for safe
handling, ventilation, first aid, and personal protective equipment are
met. Failure to comply with MSDS requirements can cause personal
injury, including death.
HM
WARNING: Reactive material! Never clean any aluminum component
or flush Nordson equipment with halogenated hydrocarbon fluids.
Nordson melters and guns contain aluminum components that may
react violently with halogenated hydrocarbons. The use of
halogenated hydrocarbon compounds in Nordson equipment can
cause personal injury, including death.
HM, CA
WARNING: System pressurized! Relieve system hydraulic pressure
before breaking any hydraulic connection or seal. Failure to relieve
the system hydraulic pressure can result in the uncontrolled release of
hot melt or cold adhesive, causing personal injury.
HM
WARNING: Molten material! Wear eye or face protection, clothing that
protects exposed skin, and heat-protective gloves when servicing
equipment that contains molten hot melt. Even when solidified, hot
melt can still cause burns. Failure to wear appropriate personal
protective equipment can result in personal injury.
HM, PC
WARNING: Equipment starts automatically! Remote triggering
devices are used to control automatic hot melt guns. Before working
on or near an operating gun, disable the gun’s triggering device and
remove the air supply to the gun’s solenoid valve(s). Failure to disable
the gun’s triggering device and remove the supply of air to the
solenoid valve(s) can result in personal injury.
HM, CA, PC
WARNING: Risk of electrocution! Even when switched off and
electrically isolated at the disconnect switch or circuit breaker, the
equipment may still be connected to energized auxiliary devices.
De-energize and electrically isolate all auxiliary devices before
servicing the equipment. Failure to properly isolate electrical power to
auxiliary equipment before servicing the equipment can result in
personal injury, including death.
Continued...

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Part 1042733B E2004 Nordson Corporation
General Safety Warnings and Cautions (contd)
Table 1 General Safety Warnings and Cautions (contd)
Equipment
Type Warning or Caution
HM, CA, PC
WARNING: Risk of fire or explosion! Nordson adhesive equipment is
not rated for use in explosive environments and should not be used
with solvent-based adhesives that can create an explosive
atmosphere when processed. Refer to the MSDS for the adhesive to
determine its processing characteristics and limitations. The use of
incompatible solvent-based adhesives or the improper processing of
solvent-based adhesives can result in personal injury, including death.
HM, CA, PC
WARNING: Allow only personnel with appropriate training and
experience to operate or service the equipment. The use of untrained
or inexperienced personnel to operate or service the equipment can
result in injury, including death, to themselves and others and can
damage to the equipment.
HM
CAUTION: Hot surfaces! Avoid contact with the hot metal surfaces of
guns, hoses, and certain components of the melter. If contact can not
be avoided, wear heat-protective gloves and clothing when working
around heated equipment. Failure to avoid contact with hot metal
surfaces can result in personal injury.
HM
CAUTION: Some Nordson melters are specifically designed to
process polyurethane reactive (PUR) hot melt. Attempting to process
PUR in equipment not specifically designed for this purpose can
damage the equipment and cause premature reaction of the hot melt.
If you are unsure of the equipment’s ability to process PUR, contact
your Nordson representative for assistance.
HM, CA
CAUTION: Before using any cleaning or flushing compound on or in
the equipment, read and comply with the manufacturer’s instructions
and the MSDS supplied with the compound. Some cleaning
compounds can react unpredictably with hot melt or cold adhesive,
resulting in damage to the equipment.
HM
CAUTION: Nordson hot melt equipment is factory tested with
Nordson Type R fluid that contains polyester adipate plasticizer.
Certain hot melt materials can react with Type R fluid and form a solid
gum that can clog the equipment. Before using the equipment,
confirm that the hot melt is compatible with Type R fluid.

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Part 1042733B
E2004 Nordson Corporation
Other Safety Precautions
SDo not use an open flame to heat hot melt system components.
SCheck high pressure hoses daily for signs of excessive wear, damage,
or leaks.
SNever point a dispensing handgun at yourself or others.
SSuspend dispensing handguns by their proper suspension point.
First Aid
If molten hot melt comes in contact with your skin:
1. Do NOT attempt to remove the molten hot melt from your skin.
2. Immediately soak the affected area in clean, cold water until the hot melt
has cooled.
3. Do NOT attempt to remove the solidified hot melt from your skin.
4. In case of severe burns, treat for shock.
5. Seek expert medical attention immediately. Give the MSDS for the hot
melt to the medical personnel providing treatment.

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Part 1042733B E2004 Nordson Corporation
Safety Labels and Tags
Figure 1 illustrates the location of the product safety labels and tags affixed
to the equipment. Table 2 provides an illustration of the hazard identification
symbols that appear on each safety label and tag, the meaning of the
symbol, or the exact wording of any safety message.
422100007
1
Figure 1 Safety labels and tags
Table 2 Safety Labels and Tags
Item Part Description
1. 1038851 Refer to operations manual prior to servicing. Note: Alignment marks “A”
located on inlet and output port blocks, must be on the same side or
overheating will occur.

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Description
The DH air heater heats the pattern air for hot melt adhesive application
systems that typically include a DM adhesive melter and DF adhesive
applicators. Figure 2 shows the key parts of a DH air heater. Refer to
Technical Data at the end of this manual for dimensions and specifications.
Operation of the air heater begins when an air supply is connected to the air
input fitting. The air is forced through a series of holes that surround the
heater housing, heated to a specified temperature, and delivered to the
applicator through the air output fitting. Figure 3 shows the flow of air
through the air heater.
Temperature sensing is accomplished via an integral temperature sensor.
The sensor supplies temperature information to the temperature controller,
which then activates the heater as needed to maintain the specified
temperature.
422100001
3
2
4
1
Figure 2 Key parts of a DH air heater
1. Insulation
2. Air output 3. Air input 4. Cordset

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Part 1042733B E2004 Nordson Corporation
Description (contd)
422103001W
Air output
Sensor Heater
Air channels
Heated
pattern
air out
Unheated
pattern
air in
element
Figure 3 Flow of air through the air heater

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Installation
Installation involves mounting the air heater, connecting the electrical
connector, and making the pneumatic connections.
Air Heater Mounting 1. Before mounting the air heater:
SConsider the location of the applicator and the lengths of the hoses,
cordsets, and cables that will be connected to the applicator. Hoses
have a minimum bending radius.
SConsider the length of air tubing that will be required.
SKeep plant traffic patterns in mind. Avoid running cables or hoses
where they may be stepped on—this is a personnel safety hazard
and can also compromise the service life of the air heater.
2. Mount the air heater in the desired location. Typically, the air heater is
mounted directly on an applicator using a 1/4NPT, no. 6 MC swivel
fitting, as shown in Figure 4.
NOTE: If the air heater is to be mounted remotely at a distance of 1 m
(3 ft) or more from the applicator, Nordson Corporation recommends
that a heated hose be used to connect the two units. Doing so will
prevent heat loss.
422100008
1
2
Figure 4 Air heater mounted on a ply bonding applicator
1. Air heater 2. Swivel fitting

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Part 1042733B E2004 Nordson Corporation
Electrical Connection
NOTE: The air heater is designed to be controlled and monitored by a
sophisticated temperature controller, such as the one on a Nordson DM
melter.
If power and control for the air heater will be supplied by a DM melter,
connect the 9-pin male-connector plug of the air heater cordset to the
corresponding female-connector plug on the melter.
If power and control for the air heater will be supplied by a system other
than a DM melter, refer to the cordset pin diagram shown in Figure 5 and
make the appropriate electrical connections.
422100002
Ground
2 (Neutral)
1 (Hot)
(Temp -)
3 (Temp +)
Figure 5 Location of the air heater cordset

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Pneumatic Connections
The customer is responsible for the materials needed to connect an air
supply to the air heater. These materials should have a high temperature
tolerance because some heat will migrate from the air heater into the fittings
and connections.
1. See Figure 6. Connect the pattern air supply to the AIR IN port on the air
heater.
NOTE: The pattern air supply should meet the following criteria:
Sa dew point of less than 2 _C (35 _F)
Sfiltration of particles greater than 10 microns
Soil content of less than 10 ppm
2. Connect the heated pattern air from the air heater to the applicator using
the air output fitting on the air heater.
422100003
1
2
Figure 6 Location of air connections on the air heater
1. Air input 2. Air output
Installation Check
Before powering up the air heater for the first time, check all system
connections. Pull and push the connections to verify that all are firmly
seated, ensure that locking connections are properly mated and locked, and
ensure that pneumatic connections are not leaking.

DH Air Heater
16
Part 1042733B E2004 Nordson Corporation
Operation
Startup
Startup is performed concurrent with associated equipment. Follow these
steps to ensure proper operation of the air heater.
NOTE: Before operating the air heater, ensure that the applicator has been
properly installed, with the adhesive hose connected to the adhesive inlet
on the applicator.
1. Turn on the power to the melter or controller to which the air heater is
connected.
2. Use the controller to set the air heater to the desired temperature.
3. Turn on the pattern air supply.
4. Turn on the power to the air heater. When the pattern air has reached
the desired temperature, the system is ready for routine operation.
5. During operation, monitor zone temperatures and pressures to ensure
that they remain constant.
Shutdown
Shutdown is performed concurrent with associated equipment. Follow these
steps to prevent equipment damage.
1. Stop the adhesive flow.
2. Turn off the power to the air heater.
3. Turn off the pattern air supply.
4. Turn off the system power.