DUAL PULSE 125
STORED ENERGY RESISTANCE WELDING POWER SUPPLY
990-270 5-1
CHAPTER 5
MAINTENANCE
Modification and Calibration
Unless you are a skilled technician, we suggest you telephone the Amada Miyachi America Repair
Department at the telephone number shown in the Foreword of this manual for advice before attempting
calibration and/or modification.
WARNING
To avoid electrical shock, use a voltmeter capable of measuring 500 volts to verify
that the voltage across the capacitors is less than 30 volts. Due to dielectric
absorption, a characteristic of all electrolytic capacitors, the capacitor bank will tend
to recharge itself, to possibly hazardous levels, even though the power is off.
Modification of Line Voltage
The power supply is designed to operate at line voltages of 100, 115, 200/208, or 230VAC, 50/60 Hz.
To change the operating Line Voltage:
a) Change jumper connections on Control Board. Refer to figure 5-1.
b) Install correct circuit breaker(s). Refer to Appendix A.
c) Provide correct line cord plug.
d) Change all labels and tags to indicate the correct line voltage.
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