UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665
6-1
CHAPTER 6
USER MAINTENANCE
Section I: Precautions
General Operator Safety
ALWAYS
wear safety goggles and other appropriate safety equipment when you are
performing a
welding operation
.
Section II: Operator Maintenance
The Power Supply does not require any Operator Maintenance other than calibration. To ensure
consistently accurate welds, AMADA WELD TECH recommends that you calibrate the Power Supply at
least once a year. For calibration instructions, please refer to
Chapter 7, Calibration
.
Section III: Troubleshooting
The Power Supply is designed with reliability as a top user priority. From time to time, however, you
may run into a problem and need some help to get back to normal operation. Reading this Chapter will
speed up the process.
General Kinds of Problems
It has been our experience that most resistance welding power supply "problems" are caused by lack of
material control, process control, and electrode tip surface maintenance. The problems that you might
encounter fall into two groups:
Soft
and
Hard
.
Soft
The problem is transient, and you can correct it by resetting the system or parameter limits. For
example, you should ensure that:
•
Correct force is set at the weld head
•
Correct weld energy and time is set at the Power Supply
•
The equipment is set up properly
•
All electrical connections are tight
•
Electrode alignment allows flush contact with the weld pieces
•
Electrodes are properly dressed
