HF-2500A HIGH FREQUENCY WELD CONTROL
990-371 5-1
CHAPTER 5
Operating Instructions
Section I: Introduction
Before You Start
Before operating the Power Supply, you must be familiar with the following:
• The location and function of Controls and Indicators. For more information, see Chapter 1 of
this manual.
• How to select and use the Power Supply functions for your specific welding applications. For
more information, see Chapter 3, System Configuration.
• The principles of resistance welding and the use of programmed weld schedules. For more
information, see Appendix E, The Basics of Resistance Welding. For additional information on
the welding process, see Appendix F, Quality Resistance Welding Solutions, Defining the
Optimum Process.
Pre-Operational Checks
Always perform these checks before attempting to operate the Power Supply.
Connections
Verify that the Power Supply has been connected to a manual or air-actuated weld head as described in
Chapter 2 of this manual. Verify that the Emergency Stop Switch shorting wires are connected or verify
that an Emergency Stop Switch is connected properly.
Power
Verify that power is connected as described in Chapter 2 of this manual.
Compressed Air
If you are using an air-actuated weld head, verify that compressed air is connected as described in the
appropriate sections of your weld head manual. Turn the compressed air ON, and adjust it according to
the instructions in your weld head manual.
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