Hot Melt Application Head
EP 30
Manual P/N 397 191 B
− English −
Issued 11/05
NORDSON ENGINEERING GMBH D LÜNEBURG D GERMANY
P/N 397191B E 2005 Nordson Corporation
EP 30
Note
This manual applies to the entire series.
Order number
P/N = Order number for Nordson products
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.
E2005 All rights reserved.
Trademarks
AccuJet, AeroCharge, Apogee, 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, Dura-Screen, Durasystem,
Easy Coat, Easymove Plus, Ecodry, Econo-Coat, e.dot, e.stylized, EFD, ETI, Excel 2000, Fillmaster, FlexiCoat, Flexi-Spray, Flex-O-Coat, Flow Sentry,
Fluidmove, FoamMelt, FoamMix, Heli-flow, Helix, Horizon, Hot Shot, iControl, iFlow, Isocoil, Isocore, Iso-Flo, iTRAX, JR, KB30, Kinetix, Little Squirt,
Magnastatic, March, MEG, Meltex, Microcoat, Micromark, MicroSet, Millenium, Mini Squirt, Moist-Cure, Mountaingate, MultiScan, Nordson, OmniScan,
OptiMix, Package of Values, PatternView, PermaFlo, Plasmod, PluraFoam, Porous Coat, PowderGrid, Powderware, Prism, Printplus, ProBlue, Pro-Flo,
ProLink, Pro-Meter, Pro-Stream, RBX, Rhino, Saturn, Scoreguard, 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 Clean, Sure Coat, Sure-Max,
Tela-Therm, Tracking Plus, Trends, Tribomatic, Ultrasaver, UniScan, UpTime, Vantage, Veritec, VersaBlue, Versa-Coat, Versa-Screen, Versa-Spray,
Walcom, Watermark, When you expect more. are registered trademarks − ® − of Nordson Corporation.
Accubar, Advanced Plasma Systems, AeroDeck, AeroWash, AquaCure, ATS, Auto-Flo, AutoScan, BetterBook, Blue Series, CanNeck, Celero,
Chameleon, Check Mate, ClassicBlue, Controlled Fiberization, Control Weave, CPX, DispensLink, Dry Cure, DuraBraid, DuraCoat, DuraDrum, DuraPail,
Easy Clean, EasyOn, Eclipse, E-Nordson, Equi=Bead, ESP, Exchange Plus, Fill Sentry, Gluie, G-Net, G-Site, HDLV, Ink-Dot, iON, Iso-Flex, iTrend, KVLP,
Lacquer Cure, Lean Cell, Logicomm, Maverick, Maxima, MicroFin, MicroMax, MiniBlue, Minimeter, Multifil, Myritex, OptiStroke, Origin, PatternPro, PCI,
PluraMix, Powder Pilot, Powercure, Primarc, Process Sentry, Prodigy, Pulse Spray, PurTech, Quad Cure, Ready Coat, Royal Blue, Select Series,
Sensomatic, Shaftshield, SheetAire, Smart, SolidBlue, Spectral, Spectronic, SpeedKing, Spray Works, Summit, Sure Brand, SureSeal, Sure Wrap,
Swirl Coat, Tempus, ThruWave, Trade Plus, Trak, TrueBlue, Ultra, Ultrasmart, Universal, Viper, Vista, WebCure, 2 Rings (Design) are trademarks −
T − 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
P/N 397191B
E 2005 Nordson Corporation EP 30
Table of Contents
Safety Instructions 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intended Use 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unintended Use − Examples −1. . . . . . . . . . . . . . . . . . . . . . . . . .
Residual Risks 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note on Manual 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description of Components / Functioning 3. . . . . . . . . . . . . . . . . . . .
Front and Back View 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solenoid valve 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Module 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heating 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ID Plate 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unpacking 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transport 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disposal 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhausting Adhesive Vapors 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Laying Cable 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrically Connecting Application Head 6. . . . . . . . . . . . . . . . . .
Connecting Solenoid Valves 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressed Air 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating with Non-lubricated Compressed Air 7. . . . . . . . . . . .
Conditioning Compressed Air 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic Connections 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Heated Hoses 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relieving Pressure 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Open-jawed Wrench 8. . . . . . . . . . . . . . . . . . . . . . . . .
Operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Triggering Solenoid Valve 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Temperatures 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Control Air Pressure 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Adhesive Pressure 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum adhesive pressure 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Settings Record Form 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents
II
P/N 397191B E 2005 Nordson Corporation
EP 30
Maintenance 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relieving Pressure 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daily Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visual Inspection for External Damage 13. . . . . . . . . . . . . . . . . . .
External Cleaning 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspecting Control Module 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Regular Maintenance 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Control Module 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning Nozzle 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Record Form 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Table 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Data 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Data 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperatures 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions and Weights 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hot melt application head EP 30 1
P/N 397191B
E 2005 Nordson Corporation EP 30
Safety Instructions
WARNING: Allow only qualified personnel to perform the following tasks.
Observe and follow the safety instructions in this document and all other
related documentation.
Description
Intended Use
Hot melt application heads in the series EP 30 − hereafter also referred to
as application head − may be used only for bead application of hot melt
adhesives.
Any other use is considered to be unintended. Nordson will not be liable for
personal injury or property damage resulting from unintended use.
Intended use includes the observance of Nordson safety instructions.
Nordson recommends obtaining detailed information on the materials to be
used.
Unintended Use − Examples −
The application head may not be used under the following conditions:
SWhen changes or modifications have been made by the customer
SIn defective condition
SIn a potentially explosive atmosphere
SWhen values stated under Technical Data are not complied with.
The application head may not be used to apply the following materials:
SExplosive and flammable materials
SErosive and corrosive materials
SFood products.
2Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
Residual Risks
In the design of the unit, every measure was taken to protect personnel
from potential danger. However, some residual risks can not be avoided.
Personnel should be aware of the following:
SRisk of burns! The application head is hot.
SRisk of burns! The hot melt adhesive that comes out of the nozzle is hot.
SRisk of burns when connecting and disconnecting heated hoses.
SRisk of burns when conducting maintenance and repair work for which
the application head must be heated up.
SInhalation of potentially hazardous hot melt adhesive vapors.
Note on Manual
SThe position numbers in the illustrations do not correspond to the
position numbers in the technical drawings and parts lists.
SThe illustrations show only the essential components of the application
head. All other components and details can be found in the included
technical drawings (Refer to Parts List).
Hot melt application head EP 30 3
P/N 397191B
E 2005 Nordson Corporation EP 30
Description of Components / Functioning
Front and Back View
5
134
2
6
7
9
8
Fig. 1
1 Compressed air connection
2 Solenoid valve
3 Control module
4 Electrical connecting line
5 Hose connection
6 Nozzle
7 Temperature sensor
8 Heater cartridge
9 Mounting bracket
Note: Depending on the model, the nozzle may be different lengths.
002309
WV
Nordson Engineering GmbH
D 21337 Lüneburg − Germany
Made in Germany
4Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
Description of Components / Functioning (contd.)
Solenoid valve
NOTE: The solenoid valves may only be triggered or activated when the
application head has been heated up! Failure to observe may cause
damage to the nozzle stem seals in the control modules.
The solenoid valves are operated by an electronic control unit that ensures
that the solenoid valves open and close at the right times.
Control Module
The control module precisely opens and closes the adhesive supply to the
nozzle by pneumatically raising or lowering the nozzle stem. A compression
spring ensures that the application nozzle is closed when pressure drops,
preventing adhesive from being applied.
Heating
The application head is heated with electrical heater cartridges. The
temperature is continuously measured by temperature sensors and is
controlled with electronic temperature controllers.
Temperature controllers are not part of the application head.
ID Plate
The ID plate displays the following information:
Type of application head
Nordson order number
Serial number
Operating voltage (V = Volt)
Total power consumption (W = Watt)
Fig. 2
Hot melt application head EP 30 5
P/N 397191B
E 2005 Nordson Corporation EP 30
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.
Unpacking
Unpack carefully. Then check for any damage caused during shipping.
Reuse packaging materials or dispose of properly according to local
regulations.
Transport
The application head is a high precision, valuable part. Handle very
carefully! Protect the nozzle from damage.
Storage
Do not store outside! Protect from humidity and dust. Do not lay application
head on the nozzle. Protect the nozzle from damage.
Disposal
When your Nordson product has exhausted its purpose and/or is no longer
needed, dispose of it properly according to local regulations.
Installation
When installing the application head, the following points should be
observed in order to avoid unnecessary effort later.
SProtect from humidity, vibrations, dust and drafts.
SEnsure access to parts relevant for maintenance and operation.
SInstall/attach the application head to/in the parent machine with the
mounting bracket. To achieve optimum adhesive application, during
assembly ensure that the distance and, when appropriate, the angle
between the nozzle and the substrate can be varied.
SWhen installing the application head, ensure that cables, air hoses, and
heated hoses can not be bent, pinched, torn off or otherwise damaged.
6Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
Exhausting Adhesive Vapors
Ensure that adhesive vapors do not exceed the prescribed limits. Exhaust
adhesive vapors when necessary. Provide sufficient ventilation of the
location where the application head is installed.
Electrical Connections
WARNING: Risk of electrical shock. Failure to observe may result in
personal injury, death, or equipment damage.
Laying Cable
WARNING: Do not pinch cables and check regularly for damage. Replace
damaged cables immediately!
Electrically Connecting Application Head
The application head is connected electrically by inserting the plugs into the
corresponding receptacle of the melter or a terminal box. Secure the plug
with the clamp if necessary.
Connecting Solenoid Valves
Depending on the specific design of the hot melt application system, the
solenoid valves on the control modules are controlled either by an external
power supply, e.g. control unit, or through the solenoid valve control leads of
the heated hose. Secure the plug with the clamp if necessary.
NOTE: Observe the voltage stated on the ID plate of the solenoid valve.
Hot melt application head EP 30 7
P/N 397191B
E 2005 Nordson Corporation EP 30
Compressed Air
Nordson recommends using dry, controlled and non-lubricated compressed
air.
Operating with Non-lubricated Compressed Air
When an application head is connected to a compressed air system in
which the compressed air has previously been lubricated, simply ceasing to
lubricate the air is not sufficient. The oil remaining in the compressed air
supply will reach the solenoid valves and the control modules and wash out
the lubricant/oil from these parts, substantially decreasing the lifetime of the
units.
NOTE: It must be ensured that the compressed air supply to the application
heads has been converted to absolutely non-lubricated operation.
NOTE: No oil from a possible defective compressor may be permitted to
penetrate the compressed air supply.
NOTE: Nordson will assume no warranty/liability for damage resulting from
unpermitted, temporary lubrication.
Conditioning Compressed Air
The quality of the compressed air must be at least class 2 as stipulated by
ISO 8573−1. This means:
SMax. particle size 1 mm
SMax. particle density 1 mg/m3
SMax. pressure dewpoint −40 °C / −40 °F
SMax. oil concentration 0.1mg/m3.
Pneumatic Connections
1. Connect customer’s air supply to to the inlet of the air conditioning unit.
Maximum air pressure:
10 bar 1 MPa 145 psi
2. Connect control modules to the air conditioning unit.
3. Set control air pressure:
Approx. 5 to 6 bar Approx. 0.5 to 0.6 MPa Approx. 72.5 to 87 psi
NOTE: The exact pressure must be determined for each application.
MXHH001S050B0997
132
MXHH002S033A0295
8Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
Connecting Heated Hoses
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
Connecting
If cold adhesive can be found in the hose connection (1) and/or hose fitting
(2), these components must be heated until the adhesive softens (approx.
80 _C, 176_F).
1. First connect the hose (3) electrically to the unit.
2. Heat the unit and hose to approx. 80 _C (176 _F).
3. Screw the heated hose onto the unit.
Fig. 3
Disconnecting
Relieving Pressure
1. Set motor speed(s) to 0 min-1 (rpm); switch off motor(s).
2. Place a container under the nozzle(s) of the application head.
3. Trigger the solenoid valves electrically or manually. Repeat this
procedure until no more adhesive flows out.
4. Dispose of adhesive properly according to local regulations.
Second Open-jawed Wrench
Use a second open-jawed wrench when connecting and disconnecting the
heated hose. This prevents the hose connection from turning.
Fig. 4
Hot melt application head EP 30 9
P/N 397191B
E 2005 Nordson Corporation EP 30
Operation
WARNING: Allow only qualified personnel to perform the following tasks.
Observe and follow the safety instructions in this document and all other
related documentation.
Triggering Solenoid Valve
CAUTION: Trigger the solenoid valves only when the application head is
heated to operating temperature!
Setting Temperatures
NOTE: The temperature setting is determined by the processing
temperature prescribed by the adhesive supplier. The maximum operating
temperature of the product described here may not be exceeded.
The application head temperature required is set on the melter.
The basis for temperature selections are the values stipulated by the hot
melt manufacturer.
Nordson will assume no warranty or liability for damage resulting from
incorrect temperature settings.
Setting Control Air Pressure
The control air pressure is set to suit each application on an air conditioning
unit. The air conditioning unit with pressure control valve is not part of the
application head.
Set control air pressure:
5 to 6 bar 0.5 to 0.6 MPa 72.5 to 87 psi
NOTE: The maximum control air pressure may not be exceeded.
The exact pressure must be determined for each application.
Nordson will assume no warranty or liability for damage resulting from
incorrect pressure settings.
10 Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
Setting Adhesive Pressure
The exact pressure must be determined for each application.
Adhesive pressure in
application head
Pump speed in melter Adhesive pressure
Low Increase Increase
High Decrease Decrease
Maximum adhesive pressure
The maximum adhesive pressure may not be exceeded:
70 bar 7 MPa 1015 psi
Nordson will assume no warranty or liability for damage resulting from
incorrect pressure settings.
Hot melt application head EP 30 11
P/N 397191B
E 2005 Nordson Corporation EP 30
Settings Record Form
Production information
Adhesive Manufacturer
Max. processing temperature
Viscosity
Cleaning agent Manufacturer
Flash point
Basic settings Application weight (grammage)
Application width
Substrate speed
Adhesive quantity
Output capacity
Air pressure at application
head
Control air
Basic settings temperature Application head body
gp
(heating zones) Heated hose
Pump speeds Melter
pp
Motor controller (setpoint)
Adhesive pressure Melter
p
Motor controller (setpoint)
Notes
Form filled out by:
Name Date
12 Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
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 preventive measure for maintaining
operating safety and extending the lifetime of the unit. It should not be
neglected under any circumstances.
Relieving Pressure
WARNING: System and adhesive pressurized. Before removing heated
hoses and the hot melt application heads, relieve system pressure. Failure
to observe can result in serious burns.
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
1. Set motor speed of the unit feeding the hot melt adhesive to 0 min-1;
switch off motor(s).
2. Place a container under the nozzle of the application head.
3. Activate the solenoid valves electrically or manually. Repeat this
procedure until no more adhesive flows out.
4. Reuse adhesive or dispose of properly according to local regulations.
Hot melt application head EP 30 13
P/N 397191B
E 2005 Nordson Corporation EP 30
Daily Maintenance
Unit part Activity Interval Refer to
Complete application head Inspect for damage Daily Page 13
ppp
External cleaning Daily Page 13
Control modules Check for leakage Daily Page 13
Visual Inspection for External Damage
CAUTION: When damaged parts pose a risk to the operational safety of
the unit and/or safety of personnel, switch off the unit and have the
damaged parts replaced by qualified personnel. Use only original Nordson
spare parts.
External Cleaning
External cleaning prevents impurities created during production from
causing the unit to malfunction.
Always follow manufacturer’s instructions when using cleaning agents!
1. Heat cold application head electrically or with a hot air fan until the
adhesive is liquid.
2. Thoroughly remove warm adhesive with a cleaning agent and/or a soft
cloth.
3. Remove dust, fluffs, etc. with a vacuum cleaner or a soft, lint-free cloth.
CAUTION: Do not damage or remove warning labels. Damaged or
removed warning labels must be replaced by new ones.
Inspecting Control Module
If adhesive escapes, the internal O-rings have worn and the control module
must be replaced.
14 Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
Regular Maintenance
Unit part Activity Interval Refer to
Control modules Check detection holes Daily Page 13
Replace When damaged Page 14
Nozzle Cleaning Regularly, or when the
application pattern
deteriorates
Page 14
Replace When damaged −
Power cable Inspect for damage Every time the application
head is serviced
−
Air hoses Inspect for damage Every time the application
head is serviced
−
Replacing Control Module
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
Nordson recommends keeping control modules on hand to avoid
interruptions in production (Refer to Spare Parts List).
1. Relieve pressure.
2. Release air connection and electrical connection.
3. Release screws and extract control module from warm application head.
4. Insert new control module; tighten screws crosswise.
5. Re-connect air and electrical connection.
Cleaning Nozzle
WARNING: Hot! Risk of burns. Wear heat-protective gloves.
Nordson recommends keeping nozzles on hand to avoid interruptions in
production (Refer to Spare Parts List).
1. Unscrew nozzle from application head.
2. Clean nozzle with a cleaning agent or a soft cloth.
3. Inspect nozzle for damage, replace if necessary
4. Screw clean nozzle onto the application head again.
Hot melt application head EP 30 15
P/N 397191B
E 2005 Nordson Corporation EP 30
Maintenance Record Form
Unit part Activity Date Name Date Name
Application head External inspection and
p
cleaning
Control module External cleaning
Replace control module
Nozzle Cleaning
Replace nozzle
16 Hot melt application head EP 30
P/N 397191B E 2005 Nordson Corporation
EP 30
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.
Introduction
Troubleshooting tables are intended as an orientation for qualified
personnel. They cannot, however, replace targeted troubleshooting with the
aid of wiring diagrams and measuring instruments. They also do not include
all possible problems, only those which most typically occur.
The following problems are not included in the troubleshooting tables:
SFaults in installation
SFaults in operation
SDefective cables
SLoose plug and screw connections
In the column Corrective action, the remark that defective parts should be
replaced is generally not included.
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