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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MXHH001S050A0295
2
1 3
MXHH002S033A0295
Heated Hoses PG... 7
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: Hot! Risk of burns. Wear heat--protective gloves.
If cold hot melt material can be found in the hose connection fitting (1)
and/or hose connection (2), these components must be heated until the
material softens (approx. 80 _C, 176 _F).
1. First connect the hose (3) electrically to the unit. For more than one
hose: every hose connection fitting is allocated to a corresponding
connection socket. Do not mistakenly exchange!
NOTE: For units with recirculation hoses: do not mistake recirculation
hoses for feed hoses.
2. Heat the unit and hose to approx. 80 _C (176 _F).
3. Screw the hose onto the unit.
Fig. 4
NOTE: Close unused hose connection fittings with Nordson screw caps.
WARNING: System and hot melt material pressurized. Relieve
pressure before disconnecting heated hoses. Failure to observe
can result in serious burns.
Relieving pressure
See operating manual of the material pressure--producing system
components.
Second Open- jawed Wrench
Using a second open--jawed wrench prevents the hose connection fitting
on the unit from turning.
Fig. 5
4
. Installing Heated Hoses
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Heated Hoses PG...
8
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
Maintenance
WARNING: Allow only qualified personnel to perform the
following tasks. Observe and follow the safety instructions in
this document and all other related documentation.
NOTE: Maintenance is an important preventative measure for
maintaining operational safety and extending the lifetime of the unit. It
should not be neglected under any circumstances.
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
WARNING: Risk of fire! Deposits of hot melt or other materials
can cause overheating.
1. Remove all dust and dirt deposits from the hose.
2. Remove all hot melt material residues from the hose and fittings. If
necessary, heat with an air heater until soft.
1. Check all hoses and fittings for leakiness. Replace leaking hoses.
Tighten screw connections if necessary. Use a second open--jawed
wrench.
2. Check electrical plug connections for tightness.
1. External Cleaning
2
. Condition Check

Heated Hoses PG... 9
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
Remove the old material from the unit by running until empty or draining
from the unit.
NOTE: Before changing the material type, determine whether the old
and new hot melt materials can be mixed.
SIf mixing is possible: Residues of the old material can be flushed out
using the new material.
SIf mixing is not possible: Thoroughly flush the unit with a cleaning
agent recommended by the hot melt material supplier.
NOTE: Ensure proper disposal of the old hot melt material according to
local regulations.
CAUTION: Only use a cleaning agent recommended by the hot
melt material supplier. Observe the Material Safety Data Sheet
of the cleaning agent.
Residues of the cleaning agent can be flushed out of the unit by the new
hot melt material before production begins.
NOTE: Ensure proper disposal of the cleaning agent according to local
regulations.
3
. Changing Hot Melt
Material Type
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Heated Hoses PG...
10
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
Troubleshooting
WARNING: Allow only qualified personnel to perform the
following tasks. Observe and follow the safety instructions in
this document and all other related documentation.
The troubleshooting table serves as an orientation for qualified
personnel, however it cannot replace targetted troubleshooting using e.g.
wiring diagrams and measuring instruments. The table does not contain
all possible faults, only those which typically occur.
Problem Possible Cause Corrective Action Refer to
Hose does not heat at all
or not enough
Application system is
switched off Switch on application system Operating manual of the application system
Temperature controller
malfunction Check temperature controller, replace if
necessary
Operating manual of the
application system or of
the temperature controller
Loose electrical
connections Check and tighten electrical connections --
Damaged or broken plug
connection Replace --
1. Introduction
2
. Troubleshooting Table

Heated Hoses PG... 11
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
Overview
Nominal width see ID-plate
Operating temperature 0 bis 200 ˚C32 bis 392 ˚F
Operating pressure at maximum
operating temperature
14 MPa 140 bar 2030 psi
Operating voltage 230 VAC
Power consumption per meter 150 W
Minimum bending radius 150 mm
Temperature sensor PT 100, mounted in the middle of the hose
Fittings DKJ 3/4-16 on both ends
UNF tube nut
fitting with 74˚cone JIC
bichromated
PG-hoses longer than 10 m are equipped with a 15-pole angular plug,
shorter ones with a 7-pole round plug. Another version is equipped with a
5-pole angular plug.
Angular plug, 15-pole Round plug, 7-pole Angular plug, 5-pole
Temperature sensor Pin B1 Pin B2 Pin 1 Pin 2 Pin 1 Pin 2
Mains (heating) Pin A1 Pin A2 Pin 5 Pin 6 Pin 4 Pin 5
Ground wire Contact plates Pin 7
1. Overview Table
2
. Electrical Connections

Heated Hoses PG...
12
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