Nordson MELTEX PG Series User manual

MELTEX
Heated Hoses
PG ...
Manual P/N 317 163 B
-- English --
NORDSON ENGINEERING GMBH DLÜNEBURG DGERMANY

E1998 Nordson Corporation
All rights reserved
4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98
COV_EN_317163B
NOTE
This manual is for products with the following product numbers / P/N:
3428.1830 P/N 279 922 3428.1994 P/N 407 795
3428.1831 P/N 279 923 3428.1995 P/N 407 796
3428.1832 P/N 279 924 3428.1996 P/N 407 797
3428.1833 P/N 279 925 3428.1997 P/N 407 798
3428.1834 P/N 279 926 3428.2003 P/N 409 619
3428.1835 P/N 279 927
Order number
P/N = Order number for Nordson products
Notice
This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1997.
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
AquaGuard, Blue Box, Control Coat, EquiΖBead, FloMelt, FoamMelt, FoamMix, Helix, Hot Shot, Hot Stitch,
Meltex, MicroSet, MultiScan, Nordson, the Nordson logo, OmniScan, Porous Coat, Posi-Stop, RBX, Sure-Bond,
UniScan, UpTime, and Versa-Spray are registered trademarks of Nordson Corporation.
BetterBookSM, CF, Controlled Fiberization, Easy-Screen, Fibermelt, Flo-Tracker, PrintGuard, and Package of
Values are trademarks of Nordson Corporation.

Table of Contents I
E1998 Nordson Corporation
All rights reserved 4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98 TOC_EN_317163B
Table of Contents
1. Safety Symbols 1.............................................
2. Qualified Personnel 1.........................................
3. Installation and Electrical Connections 2.........................
Less-obvious Dangers 2....................................
Danger of Burns 2..........................................
1. Intended Use 3...............................................
Unintended Use -- Examples -- 3.............................
Residual Risks 3...........................................
Chemical Compatibility 3....................................
2. ID plate 4....................................................
Explanation of Type Description 4............................
1. Unpacking 5.................................................
2. Installing 5...................................................
Minimum bending radius 5...................................
3. Electrical Connection 5........................................
Units with Plugs 5..........................................
Units with Fixed Connection 5................................
Installation Instructions 6....................................
4. Installing Heated Hoses 7......................................
Connecting 7..............................................
Disconnecting 7............................................
Relieving pressure 7.....................................
Second Open-jawed Wrench 7.............................
S
afety
D
escription
I
nstallation

Table of Contents
II
E1998 Nordson Corporation
All rights reserved
4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98
TOC_EN_317163B
1. External Cleaning 8...........................................
2. Condition Check 8............................................
3. Changing Hot Melt Material Type 9..............................
Flushing with a Cleaning Agent 9.............................
1. Introduction 10...............................................
2. Troubleshooting Table 10......................................
1. Overview Table 11............................................
2. Electrical Connections 11......................................
M
aintenance
Troubleshooting
Overview

Heated Hoses PG... 1
E1998 Nordson Corporation
All rights reserved 4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98 P/N 317163B
Safety
The following symbols are used to warn against dangers or possible
sources of danger. Become familiar with them! Failure to heed a warning
could lead to personal injury and/or damage to the unit or other
equipment.
WARNING: Failure to observe may result in personal injury,
death, or equipment damage.
WARNING: Risk of electrical shock. Failure to observe may
result in personal injury, death, or equipment damage.
WARNING: Hot! Risk of burns. Wear heat-protective clothing,
safety goggles, and/or heat-protective gloves depending on the
symbols shown.
WARNING: System or material pressurized. Relieve pressure.
Failure to observe may result in serious burns.
CAUTION: Failure to observe may result in equipment
damage.
“Qualified personnel” is defined here as individuals who thoroughly
understand the equipment and its safe operation, maintenance, and
repair. Qualified personnel are physically capable of performing the
required tasks, familiar with all relevant safety rules and regulations, and
have been trained to safely install, operate, maintain, and/or repair the
equipment. It is the responsibility of the company operating the
equipment to see that its personnel meet these requirements.
1. Safety Symbols
2
. Qualified Personnel

Heated Hoses PG...
2
E1998 Nordson Corporation
All rights reserved
4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98
P/N 317163B
WARNING: Failure to follow the safety procedures can result in
injury or death.
SCables must never be squeezed or pinched. Do not locate cables or
hoses in high traffic areas.
WARNING: An operator or service technician working with the
unit should be aware of less-obvious dangers that often cannot
be completely minimized at production sites:
SExposed surfaces of the unit which cannot be practically
safeguarded. They may be hot and take time to cool after the unit has
been operating.
SHot melt material and vapors
Contact with hot melt materials or hot areas of the unit may produce a
severe skin burn.
WARNING: Hot! Risk of burns. Wear heat-protective clothing,
safety goggles, and/or heat-protective gloves depending on the
symbols shown.
SBe extremely careful when using hot melt material. Even solidified
material may still be very hot.
SAlways wear protective clothing which safely covers all exposed parts
of the body.
In case of burns:
SImmediately cool affected skin areas using cold, clean water.
SDo not forcefully remove hot melt material from the skin.
SImmediately seek medical attention.
3
. Installation and Electrical
Connections
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Heated Hoses PG... 3
E1998 Nordson Corporation
All rights reserved 4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98 P/N 317163B
Description
Heated hoses of the Series PG... may only be used for the feeding of hot
melt materials and similar thermoplastic materials between the
components of material application systems.
Any other use is considered as not intended and is carried out at the
operator’s own risk. Nordson will not be responsible for personal or
equipment damage resulting from unintended use.
Intended use also includes the observance of Nordson safety
instructions. Nordson recommends collecting detailed information about
the materials to be used.
Heated hoses may not be used under the following conditions:
SIn defective condition
SIn an explosive atmosphere
STo feed substances which are not compatible with the hose core
material (see: Chemical Compatibility).
The unit is designed to protect operating personnel from possible risks.
However, some residual risks cannot be avoided. Personnel must
consider the following:
SInhalation of potentially hazardous hot melt material vapors
SRisk of injury from automatically--positioned system components (e.g.
robots)
SRisk of burns from heated components, e.g. hose fittings or hot melt
material application heads.
The cores of PG... hoses are made of PTFE and are compatible with
most other materials. However, PTFE swells on contact with
fluorcarbohydrates and oils. Small amounts of water diffuse through the
material.
NOTE: For all applications refer to the Material Safety Data Sheet of the
materialwhichistobeprocessed.
1. Intended Use
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Heated Hoses PG...
4
E1998 Nordson Corporation
All rights reserved
4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98
P/N 317163B
The following ID plate can be found on the heated hoses:
XXHH004L062A0796
Nordson Engineering GmbH
D-21337 Lüneburg/Germany
VW˚C
Fig. 1
The information is as follows:
Information Meaning Unit
Type Type description --
P/N Article number --
Ser. Serial number --
UOperating voltage Volt
PPower consumption Watt
TMaximum operating temperature ˚C
Explanation results from an example:
PG-15-10-K-Pt 100
Pt 100 Temperature sensor
LEquipment variant (here: without control lead)
10 Nominal width of hose core in mm
15 Nominal length in dm
PG Series
2
.IDplate
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4110132
Heated Hoses PG... 5
E1998 Nordson Corporation
All rights reserved 4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98 P/N 317163B
Installation
WARNING: Allow only qualified personnel to perform the
following tasks. Observe and follow the safety instructions in
this document and all other related documentation.
CAUTION: Unroll the hose when unpacking to avoid bending
or pinching.
In order to guarantee long operating life and safe operation, observe the
installation instructions when laying heated hoses (see Fig. 3).
Ensure proper ventilation of covered hoses to avoid overheating.
Observe minimum bending radius of 150 mm.
WARNING: Disconnect equipment from the line voltage before
plugging or unplugging electrical hose connections. Observe
national installation practice and corresponding safety
regulations.
1. Switch off the unit’s main switch.
2. Disconnect power cable and secure against re-connection.
1. Disconnect and lock out power to the main circuit breaker for the
applicator input power line.
2. Move the applicator circuit breaker to the OFF position.
Fig. 2 Disconnecting and Locking
Out Main Power
1. Unpacking
2
. Installing
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3
. Electrical Connection
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Heated Hoses PG...
6
E1998 Nordson Corporation
All rights reserved
4 5 -- P G -- M A -- 0 1 ( f o r m e r l y P G . . . )
Issued 10/98
P/N 317163B
XXHH005L220A0796
P/N 111 940
X=13 mm (0.50 in.)
X
P/N 271 486
²150 mm
Fig. 3
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