Nordson ProBlue P4 Reference guide

ProBlueAdhesive Melters
Models P4, P7, and P10
Customer Product Manual
Part 1024496_06
Issued 3/14
NORDSON CORPORATION DULUTH, GEORGIA USA
www.nordson.com
This document contains important safety information
Be sure to read and follow all safety information in this
document and any other related documentation.

Part 1024496_06 2014 Nordson Corporation
All rights reserved
For CE Declaration, refer to equipment documentation.
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: Customer Service
11475 Lakefield Drive
Duluth, GA 30097
Notice
This is a Nordson Corporation publication which is protected by copyright. Original copyright date 2002.
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, Apogee, AquaGuard, Asymtek, Automove, Baitgun, Blue Box, Bowtie, CanWorks, Century, CF, CleanSleeve, CleanSpray, ColorMax,
Color‐on‐Demand, ControlCoat, Coolwave, Cross‐Cut, cScan+, Dispensejet, DispenseMate, DuraBlue, DuraDrum, Durafiber, DuraPail, Dura‐Screen,
Durasystem, EasyCoat, Easymove Plus, Ecodry, Econo‐Coat, e.DOT, EFD, Emerald, Encore, ESP, e stylized, ETI ‐ stylized, Excel 2000, Fillmaster,
FlexiCoat, Flex‐O‐Coat, Flow Sentry, Fluidmove, FoamMelt, FoamMix, Fulfill, GreenUV, HDLV, Heli‐flow, Horizon, Hot Shot, iControl, iDry, iFlow, Isocoil,
Isocore, Iso‐Flo, iTRAX, Kinetix, LEANCELL, LittleSquirt, LogiComm, Magnastatic, March, Maverick, MEG, Meltex, Microcoat, Micromark, MicroSet,
Millennium, Mini Squirt, Mountaingate, Nordson, Optimum, Package of Values, Pattern View, PermaFlo, PicoDot, PorousCoat, PowderGrid, Powderware,
Precisecoat, PRIMARC, Printplus, Prism, ProBlue, Prodigy, Pro‐Flo, ProLink, Pro‐Meter, Pro‐Stream, RBX, Rhino, Saturn, Saturn with rings, Scoreguard,
Seal Sentry, SelectCharge, SelectCoat, Select Cure, Signature, Slautterback, Smart‐Coat, Solder Plus, Spectrum, Speed‐Coat, SureBead, Sure Coat,
Sure‐Max, Sure Wrap, TrackingPlus, TRAK, Trends, Tribomatic, TrueBlue, TrueCoat, Ultra, UpTime, u‐TAH, Vantage, VersaBlue, Versa‐Coat, VersaDrum,
VersaPail, Versa‐Screen, Versa‐Spray, Watermark, and When you expect more. are registered trademarks of Nordson Corporation.
Accubar, Advanced Plasma Systems, AeroDeck, AeroWash, AltaBlue, AltaSlot, Alta Spray, Artiste, ATS, Auto‐Flo, AutoScan, Axiom, Best Choice,
Blue Series, Bravura, CanPro, Champion, Check Mate, ClassicBlue, Classic IX, CleanCoat, Cobalt, Controlled Fiberization, ControlWeave, ContourCoat,
CPX, cSelect, Cyclo‐Kinetic, DispensLink, Dry Cure, DuraBraid, DuraCoat, DuraPUR, Easy Clean, EasyOn, EasyPW, Eclipse, e.dot+, E‐Nordson, Equalizer,
EquiBead, FillEasy, FillSentry, Flow Coat, Fluxplus, Get Green With Blue, G‐Net, G‐Site, IntelliJet, iON, Iso‐Flex, iTrend, Lacquer Cure, Maxima, Mesa,
MicroFin, MicroMax, Mikros, MiniBlue, MiniEdge, Minimeter, Multifill, MultiScan, Myritex, Nano, NexJet, OmniScan, OptiMix, OptiStroke, Partnership+Plus,
PatternJet, PatternPro, PCI, Pinnacle, Plasmod, PowderPilot, Powder Port, Powercure, Process Sentry, Pulse Spray, PURBlue, PURJet, Ready Coat,
RediCoat, Royal Blue, SelectSeries, Sensomatic, Shaftshield, SheetAire, Smart, Smartfil, SolidBlue, Spectral, SpeedKing, Spray Works, Summit, SureFoam,
SureMix, SureSeal, SwirlCoat, TAH, ThruWave, TradePlus, Trilogy, Ultra FoamMix, UltraMax, Ultrasaver, Ultrasmart, Universal, ValueMate, Versa, 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.
DeviceNet is a trademark of Open DeviceNet Vendors Association, Inc.
EtherNet/IPis a trademark used under license by ODVA.
Loctite is a registered trademark of Loctite Corporation.
Never Seez is a registered trademark of Bostik Inc.
Parker Lubricant is a registered trademark of Parker Seal.
PROFIBUS is a registered trademark of PROFIBUS International.
Viton is a registered trademark of DuPont Dow Elastomers. L.L.C.
Windows is a registered trademark of Microsoft Corporation.

Table of Contents i
Part 1024496_06
2014 Nordson Corporation
Table of Contents
Safety 1-1.....................................................
Safety Alert Symbols 1‐1.........................................
Responsibilities of the Equipment Owner 1‐2.......................
Safety Information 1‐2........................................
Instructions, Requirements, and Standards 1‐2...................
User Qualifications 1‐3........................................
Applicable Industry Safety Practices 1‐3...........................
Intended Use of the Equipment 1‐3.............................
Instructions and Safety Messages 1‐4...........................
Installation Practices 1‐4......................................
Operating Practices 1‐4.......................................
Maintenance and Repair Practices 1‐5..........................
Equipment Safety Information 1‐5.................................
Equipment Shutdown 1‐6.....................................
Relieving System Hydraulic Pressure 1‐6.....................
De‐energizing the System 1‐6...............................
Disabling the Applicators 1‐6................................
General Safety Warnings and Cautions 1‐7......................
Other Safety Precautions 1‐10..................................
First Aid 1‐10..................................................
Safety Labels and Tags 1‐11......................................
Description 2-1................................................
Other Sources of Information 2‐2.................................
Installation Guide 2‐2.......................................
User's Guide 2‐2...........................................
Online Support 2‐2.........................................
Product Resource CD 2‐2...................................
Product Description 2‐3.........................................
Intended Use 2‐4.............................................
Limitations of Use 2‐4.........................................
Modes of Operation 2‐4.......................................
Melter Identification 2‐5.......................................
Key Components 2‐6...........................................
Optional Equipment 2‐8.........................................

Table of Contents
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Part 1024496_06 2014 Nordson Corporation
Installation 3-1.................................................
Quick‐Start 3‐1.................................................
Installing 400/480 Volt Melters 3‐1................................
Overview 3‐2..................................................
Additional Information 3‐2......................................
Installation Tasks 3‐3.........................................
Experience of Installation Personnel 3‐3.........................
Installation Requirements 3‐4....................................
Clearances 3‐4..............................................
Ventilation 3‐5...............................................
Electrical Power 3‐5..........................................
Compressed Air 3‐6..........................................
Other Considerations 3‐6......................................
Unpacking the Melter 3‐8........................................
Contents of the Installation Kit 3‐8...............................
Customer‐Supplied Materials 3‐8...............................
Mounting the Melter 3‐10.........................................
Configuring the Electrical Service 3‐13..............................
Connecting a Compressed Air Supply 3‐18..........................
Connecting Hoses and Guns 3‐20.................................
Setting Up the Melter 3‐24........................................
Quick Setup 3‐24..............................................
Operating Parameters 3‐26.....................................
Selecting Operating Parameters 3‐26..........................
Reading or Editing Operating Parameters 3‐26..................
Set‐point Temperature of the Tank, Hoses, and Guns 3‐32..........
Save and Restore Melter Settings 3‐34...........................
Review Parameter and Set‐point Temperature Changes 3‐36.......
Installing Melter Inputs 3‐40.......................................
Installing Melter Outputs 3‐44.....................................
Installing Optional Equipment 3‐47.................................
Connecting a Gun Driver, Pattern Controller, or Timer 3‐47.............
Flushing the Melter 3‐47..........................................
Setting Up Melter Communications 3‐47............................

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Part 1024496_06
2014 Nordson Corporation
Operation 4-1..................................................
Additional Information 4‐1........................................
More About Heated Components 4‐2..............................
Filling the Tank 4‐3..............................................
Starting the Melter 4‐4...........................................
Monitoring the Melter 4‐6........................................
Confirm that the Melter is Operating Correctly 4‐7.................
Monitor Component Temperatures 4‐8..........................
Monitor Melter Faults 4‐10......................................
How F1, F2, and F3 Faults are Handled 4‐14...................
How F4 Faults are Handled 4‐15..............................
Monitor the Level of Hot Melt in the Tank 4‐17.....................
Monitor and Adjust the Operating Air Pressure 4‐17................
Monitor the Service Interval 4‐18................................
Adjusting Component Temperatures 4‐19...........................
Entering the Melter Password 4‐24.................................
Using the Melter Function Keys 4‐25...............................
Heater Key 4‐25..............................................
Pump Key 4‐26...............................................
Setup Key 4‐26...............................................
Seven‐day Clock Key 4‐27.....................................
Standby Key 4‐28.............................................
Shutting Down the Melter 4‐29.....................................
Maintenance 5-1...............................................
Relieving System Pressure 5‐2...................................
Locking Out External Communications 5‐2.........................
Cleaning the Melter 5‐4..........................................
Replacing the Filter 5‐6..........................................
Monitoring the Life of the Filter 5‐6...........................
Cleaning the Tank 5‐8...........................................
Removing the Melter from the Sub‐base 5‐10........................
Troubleshooting 6-1............................................
400/480 Volt Melters 6‐1.........................................
Safety 6‐1......................................................
Melter Faults 6‐2...............................................
Using the Troubleshooting Flowchart 6‐4...........................
Troubleshooting Quick‐checks 6‐4..............................
Returning the Melter Setup to Factory Settings 6‐5................
Identifying Electrical Components 6‐5...........................
Diagnostic Procedures 6‐11.......................................
DP.1 Isolate a Failed Control Component 6‐11....................
DP.2 Check the Tank or Manifold RTD 6‐12.......................
Reheating the Melter During an F1 Fault 6‐13...................
Remove the Tank RTD 6‐13..................................
Remove the Manifold RTD 6‐14...............................
DP.3 Check the Operation of the Power Relay or Thermostats 6‐15..
DP.4 Check the Operation of the Tank or Manifold TRIAC 6‐16......
DP.5 Check the Resistance of the Tank and Manifold Heaters 6‐17..
ProBlue Troubleshooting Flowcharts 6‐21...........................

Table of Contents
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Part 1024496_06 2014 Nordson Corporation
Parts 7-1......................................................
Using the Illustrated Parts List 7‐1.................................
Fasteners 7‐1................................................
Tank, Pump, and Manifold Parts List 7‐2...........................
Manifold Assembly Parts List 7‐4..................................
Pump Assembly Parts Lists 7‐7...................................
15:1 Pump Assembly Parts 7‐7.................................
15:1 Low‐Viscosity Pump Assembly Parts 7‐10....................
6:1 Pump Assembly Parts 7‐14..................................
Pump Shifter Assembly Parts 7‐18...............................
Pump Piston Assembly Parts 7‐20...............................
Pneumatic Components Parts List 7‐22.............................
Electrical Enclosure Parts List 7‐24.................................
Exterior Panels Parts List 7‐26.....................................
Chassis Components Parts List 7‐28...............................
Ribbon Cable Parts List 7‐30......................................
Service Kits 7‐31................................................
15:1 Pump Replacement 7‐31...................................
15:1 Low‐Viscosity Pump Replacement 7‐31......................
6:1 Pump Replacement 7‐31....................................
Pump General Service 7‐32....................................
Filter 7‐32....................................................
Pneumatic Panel 7‐32.........................................
Pressure Discharge Valve 7‐33..................................
Manifold Service Kit 7‐33.......................................
RTD 7‐33....................................................
Thermostat 7‐33..............................................
Main Circuit Board 7‐34........................................
Central Processor Unit (CPU) 7‐34..............................
Operator's Panel 7‐34..........................................
Hose/Gun Module 7‐34........................................
Main Circuit Board Fuses 7‐34..................................
Hose/Gun Module Fuses 7‐35..................................
Basic Spare Parts 7‐35.........................................
Expanded Spare Parts 7‐35....................................
Level Switch 7‐35.............................................
Manifold Guard (P4) 7‐36......................................
Manifold Guard (P10) 7‐36.....................................
Vent Guard (P10) 7‐36.........................................
Replacement Tank 7‐36........................................
Tank Lid Hinge Pin 7‐36........................................
Heater Block 230V 7‐37........................................
Manifold 4‐ or 6‐Hose/230V or 480V 7‐37.........................
Option Kits 7‐38.................................................
6‐Hose Extension 7‐38.........................................
Input/Output Expansion Card 7‐38...............................
Fill Master 7‐38...............................................
Ethernet Card 7‐38............................................
DeviceNet Card 7‐39..........................................
Profibus Card 7‐39............................................
P10 8 H/G Expansion Base 7‐39
................................
Schedule of Fasteners 7‐40.......................................

Table of Contents v
Part 1024496_06
2014 Nordson Corporation
Technical Data 8-1.............................................
General Specifications 8‐1.......................................
Electrical Specifications 8‐2......................................
Pump Specifications 8‐2.........................................
Melter Power Requirements 8‐2..................................
Dimensions 8‐3................................................
P4 Melter 8‐3................................................
P7 Melter 8‐4................................................
P10 Melter 8‐5...............................................
Sub‐base 8‐6................................................
Wiring Diagrams—200/240 VAC Melter 8‐7........................
Calculating Melter Power Requirements A-1.....................
Operating Parameters B-1......................................
Standard B‐2...................................................
Temperature Control B‐6........................................
Input Setup B‐9.................................................
Output Setup B‐12...............................................
Seven‐day Clock B‐14............................................
Example 1 B‐15.............................................
Example 2 B‐15.............................................
Example 3 B‐15.............................................
Melter Communications C-1.....................................
Software Availability C‐1.........................................
System Requirements C‐1.......................................
Installing the Software C‐2.......................................
Removing the Software from Your PC C‐4........................
Connecting the PC and the Melter C‐5.............................
Using Nordson Configuration Manager C‐6.........................
Saving and Restoring Melter Settings C‐6........................
Upgrading or Restoring Melter Firmware C‐8.....................
Troubleshooting C‐11............................................
Using Nordson Configuration Manager C‐11......................

Table of Contents
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Part 1024496_06 2014 Nordson Corporation
SP Pump Diagnostics and Repair D-1............................
Introduction D‐1................................................
Pump Function D‐1.............................................
Pump Isolation Valve D‐2...................................
Pressure Discharge Valve D‐2...............................
Pump Diagnostics D‐4...........................................
Pump Disassembly and Reassembly D‐6...........................
Melter Preparation D‐6........................................
Required Tools and Materials D‐6..............................
Tools D‐6.................................................
Service Parts D‐7..........................................
Supplies D‐7..............................................
Remove the Pump from the Melter D‐8..........................
Special Reassembly Instructions D‐8.........................
Remove the Actuator and Air Manifold and the Cylinder Assembly D‐10
Special Reassembly Instructions D‐10.........................
Remove the Magnetic Actuator Assembly D‐12....................
Remove the Valve Spool and Sleeve D‐15........................
Special Reassembly Instructions D‐16.........................
Remove the Shifter Fork D‐18...................................
Special Reassembly Instructions D‐18.........................
Remove the Piston Cups D‐20...................................
Special Reassembly Instructions D‐20.........................
Remove the Pump Frame and the Insulator D‐22...................
Special Reassembly Instructions D‐22.........................
Remove the Lower Ball Seat Assembly and the Piston D‐26.........
Special Reassembly Instructions D‐26.........................
Disassemble the Lower Ball Seat and the Pressure Ball
Assemblies D‐28..............................................
Special Reassembly Instructions D‐28.........................
Remove the O‐ring and the Pump Seal D‐30......................
Special Reassembly Instructions D‐30.........................
Pump Assembly Parts List D‐32....................................
Pump Service Kit D‐34.........................................
Other Pump Maintenance Kits D‐34..............................
Schedule of Fasteners D‐34.....................................

Table of Contents vii
Part 1024496_06
2014 Nordson Corporation
400/480 Volt ProBlue Adhesive Melters E-1.......................
Introduction E‐2................................................
Safety E‐2...................................................
Intended Use E‐2.............................................
Unintended Use E‐2..........................................
Transformer Sizing E‐3........................................
Transformer Function E‐5.....................................
Installation E‐6.................................................
Clearances E‐6..............................................
Installation Kit Components E‐7................................
Prepare the Transformer for Installation E‐8......................
Mount the Transformer to the Parent Machine E‐10................
Connect the Electrical Service to the Transformer E‐12..............
Mount the Melter to the Transformer E‐14.........................
Connect the Transformer to the Melter E‐16.......................
Troubleshooting E‐19............................................
Parts E‐20......................................................
Transformer Assembly E‐20....................................
400/480‐Volt Melter‐Specific Components E‐23...................
Service Kits E‐23..............................................
Wiring Diagram E‐23.............................................

Table of Contents
viii
Part 1024496_06 2014 Nordson Corporation

Safety 1-1
2014 Nordson Corporation Issued 10-11
Section 1
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.

Safety
1-2
2014 Nordson Corporation
Issued 10−11
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
Research 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.
Make safety information available to equipment users in accordance with
governing regulations. Contact the authority having jurisdiction for
information.
Maintain safety information, including the safety labels affixed to the
equipment, in readable condition.
Instructions, Requirements, and Standards
Ensure that the equipment is used in accordance with the information
provided in this document, governing codes and regulations, and best
industry practices.
If 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.
Provide appropriate emergency and first aid equipment.
Conduct safety inspections to ensure required practices are being
followed.
Re‐evaluate safety practices and procedures whenever changes are
made to the process or equipment.

Safety 1-3
2014 Nordson Corporation Issued 10-11
User Qualifications
Equipment owners are responsible for ensuring that users:
receive safety training appropriate to their job function as directed by
governing regulations and best industry practices
are familiar with the equipment owner's safety and accident
prevention policies and procedures
receive 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
possess industry‐ and trade‐specific skills and a level of experience
appropriate to their job function
are 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
Use the equipment only for the purposes described and within the limits
specified in this document.
Do not modify the equipment.
Do 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.

Safety
1-4
2014 Nordson Corporation
Issued 10−11
Instructions and Safety Messages
Read and follow the instructions provided in this document and other
referenced documents.
Familiarize 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.
If you are unsure of how to use the equipment, contact your Nordson
representative for assistance.
Installation Practices
Install the equipment in accordance with the instructions provided in this
document and in the documentation provided with auxiliary devices.
Ensure that the equipment is rated for the environment in which it will be
used. This equipment has not been certified for compliance with the
ATEX directive nor as nonincendive and should not be installed in
potentially explosive environments.
Ensure that the processing characteristics of the material will not create a
hazardous environment. Refer to the Material Safety Data Sheet (MSDS)
for the material.
If the required installation configuration does not match the installation
instructions, contact your Nordson representative for assistance.
Position the equipment for safe operation. Observe the requirements for
clearance between the equipment and other objects.
Install lockable power disconnects to isolate the equipment and all
independently powered auxiliary devices from their power sources.
Properly ground all equipment. Contact your local building code
enforcement agency for specific requirements.
Ensure that fuses of the correct type and rating are installed in fused
equipment.
Contact the authority having jurisdiction to determine the requirement for
installation permits or inspections.
Operating Practices
Familiarize yourself with the location and operation of all safety devices
and indicators.
Confirm that the equipment, including all safety devices (guards,
interlocks, etc.), is in good working order and that the required
environmental conditions exist.
Use 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.
Do not use equipment that is malfunctioning or shows signs of a potential
malfunction.

Safety 1-5
2014 Nordson Corporation Issued 10-11
Maintenance and Repair Practices
Allow only personnel with appropriate training and experience to operate
or service the equipment.
Perform scheduled maintenance activities at the intervals described in
this document.
Relieve system hydraulic and pneumatic pressure before servicing the
equipment.
De‐energize the equipment and all auxiliary devices before servicing the
equipment.
Use only new Nordson‐authorized refurbished or replacement parts.
Read 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.
Confirm the correct operation of all safety devices before placing the
equipment back into operation.
Dispose 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.
Keep 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:
hot melt and cold adhesive application equipment and all related
accessories
pattern controllers, timers, detection and verification systems, and all
other optional process control devices

Safety
1-6
2014 Nordson Corporation
Issued 10−11
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.
De‐energizing the System
Isolate the system (melter, hoses, applicators, 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 Applicators
NOTE: Adhesive dispensing applicators are referred to as “guns” in some
previous publications.
All electrical or mechanical devices that provide an activation signal to the
applicators, applicator solenoid valve(s), or the melter pump must be
disabled before work can be performed on or around an applicator that is
connected to a pressurized system.
1. Turn off or disconnect the applicator triggering device (pattern controller,
timer, PLC, etc.).
2. Disconnect the input signal wiring to the applicator solenoid valve(s).
3. Reduce the air pressure to the applicator solenoid valve(s) to zero; then
relieve the residual air pressure between the regulator and the applicator.

Safety 1-7
2014 Nordson Corporation Issued 10-11
General Safety Warnings and Cautions
Table 1‐1 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 1‐1 as follows:
HM = Hot melt (melters, hoses, applicators, etc.)
PC = Process control
CA = Cold adhesive (dispensing pumps, pressurized container, and
applicators)
Table 1‐1 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 applicators 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.
Continued...

Safety
1-8
2014 Nordson Corporation
Issued 10−11
General Safety Warnings and Cautions (contd)
Table 1‐1 General Safety Warnings and Cautions (contd)
Equipment
Type Warning or Caution
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 applicators. Before working on
or near an operating applicator, disable the applicator's triggering
device and remove the air supply to the applicator's solenoid valve(s).
Failure to disable the applicator'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.
HM, CA, PC
WARNING! Risk of fire or explosion! Nordson adhesive equipment is
not rated for use in explosive environments and has not been cerfified
for the ATEX directive or as nonincendive. In addition, this equipment
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.
Continued...

Safety 1-9
2014 Nordson Corporation Issued 10-11
Table 1‐1 General Safety Warnings and Cautions (contd)
Equipment
Type Warning or Caution
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
applicators, 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.

Safety
1-10
2014 Nordson Corporation
Issued 10−11
Other Safety Precautions
Do not use an open flame to heat hot melt system components.
Check high pressure hoses daily for signs of excessive wear, damage, or
leaks.
Never point a dispensing handgun at yourself or others.
Suspend 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.