HF-20-1WG
OM-610 029 820S
July 2002
Processes
Description
High Frequency Arc Starter
HF-20-1WG
TIG (GTAW) Welding
Visit our website at
www.MillerWelds.com
From Miller to You
Thank you and congratulations on choosing Miller. Now you can get
the job done and get it done right. We know you don’t have time to do
it any other way.
That’s why when Niels Miller first started building arc welders in 1929,
he made sure his products offered long-lasting value and superior
quality. Like you, his customers couldn’t afford anything less. Miller
products had to be more than the best they could be. They had to be the
best you could buy.
Today, the people that build and sell Miller products continue the
tradition. They’re just as committed to providing equipment and service
that meets the high standards of quality and value established in 1929.
This Owner’s Manual is designed to help you get the most out of your
Miller products. Please take time to read the Safety precautions. They
will help you protect yourself against potential hazards on the worksite.
We’ve made installation and operation quick
and easy. With Miller you can count on years
of reliable service with proper maintenance.
And if for some reason the unit needs repair,
there’s a Troubleshooting section that will
help you figure out what the problem is. The
Miller is the first welding
equipment manufacturer in
the U.S.A. to be registered to
the ISO 9001 Quality System
Standard.
parts list will then help you to decide the
exact part you may need to fix the problem.
Warranty and service information for your
particular model are also provided.
Working as hard as you do
– every power source from
Miller is backed by the most
hassle-free warranty in the
business.
Miller Electric manufactures a full line
of welders and welding related equipment.
For information on other quality Miller
products, contact your local Miller distributor to receive the latest full
line catalog orindividual catalog sheets. To locate your nearest
distributor or service agency call 1-800-4-A-Miller, or visit us at
www.MillerWelds.com on the web.
Miller offers a Technical
Manual which provides
more detailed service and
parts information for your
unit. T o obtain a Technical
Manual, contact your local
distributor. Y our distributor
can also supply you with
Welding Process Manuals
such as SMAW, GTAW,
GMAW, and GMA W-P.
CERTIFICATE
NAME OF EQUIPMENT: MODEL NO.
SERIAL NO. DATE:
This equipment has been type-tested under standardized field test conditions as recommended
by the Joint Industry Committee on High-Frequency Stabilized Arc Welding Machines found to radiate
less than 10 microvolts per meter at a distance of one mile, the maximum allowable limit established
by the Federal Communications Commission for equipment of this type.
Installations using this equipment on the basis of these tests, may reasonably be expected to
meet the radiation limitations established by the Federal Communications Commission, only when
installed, operated and maintained as specified in the instruction book provided.
USER’S CERTIFICATION
The welding equipment identified above has been installed in accordance with the specific
instructions applicable to this model as outlined in the instruction book furnished. It is being used only
for the purpose for which it was intended and is being maintained and operated in accordance with the
manufacturer’s instructions
Date Installed Signed
WARNING
This product, when used
for welding or cutting,
produces fumes or
gases which contain
chemicals known to the
State of California to
cause birth defects and,
in some cases, cancer.
(California Health &
Safety Code Section
25249.5 et seq.)
TABLE OF CONTENTS
SECTION 1 – SAFETY RULES FOR OPERATION OF ARC WELDING POWER SOURCE
1-1. Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. General Precautions 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3. Arc Welding 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4. Standards Booklet Index 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 – SAFETY PRECAUTIONS AND SIGNAL WORDS
2-1. General Information And Safety 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2. Safety Alert Symbol And Signal Words 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 – SPECIFICATIONS
3-1. Description 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4 – INSTALLATION OR RELOCATION
4-1. Location 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2. Coolant Connections 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-3. Gas Connections 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-4. Remote Hand Switch And Receptacle Connection 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-5. Weld Input/Output Connections 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-6. Electrical Input Connections 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5 – OPERATOR CONTROLS
5-1. Process Selector Switch 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2. Power Switch 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3. High Frequency Intensity Control 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4. Valve Control Switch 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5. Start Selector Switch 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6. Postflow Timer 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6 – SEQUENCE OF OPERATION
6-1. Gas Tungsten Arc Welding (GTAW) 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2. Shutting Down 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 7 – MAINTENANCE & TROUBLESHOOTING
7-1. Internal Cleaning 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-2. Interconnecting Cords 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-3. Spark Gaps 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-4. Tungsten Electrode 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-5. Troubleshooting 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 8 – ELECTRICAL DIAGRAMS
Diagram 8-1. Circuit Diagram For 115 Volts Models With Gas & Water Controls 22. . . . . . . . . . . . . . .
Diagram 8-2. Circuit Diagram For 230 Volts Models With Gas & W ater Controls 22. . . . . . . . . . . . . .
SECTION 9 – CERTIFICATION FOR HIGH FREQUENCY ARC WELDING EQUIPMENT
9-1. General 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-2. Definitions 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-3. High-Frequency Radiation 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-4. Location 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-5. General Installation Procedures 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-6. Guidelines For Installation Of High-Frequency Assisted Arc Welding Power Sources 26. . . . .
9-7. Installation Guidelines Checklist 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 10 – PARTS LIST
Figure 10-1. Main Assembly (HF-20-WG Illustrated) 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10-2. HF Panel (HF-20-2WG Illustrated) 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10-3. Remote Hand Switch 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIST OF CHARTS AND TABLES
Table 3-1. Specifications 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7-1. Tungsten Size 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7-2. Troubleshooting 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARRANTY
The following terms are
used interchangeably
throughout this manual:
TIG = GTA W
Stick = SMAW
OM-610 Page 1
OM-610 Page 2
OM-610 Page 3
OM-610 Page 4
OM-610 Page 5
OM-610 Page 6
Loading...