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TROUBLESHOOTING & REPAIR |
RETEST AFTER REPAIR
Should a machine under test be rejected for any reason requiring the removal of any mechanical part that could affect the machine’s electrical characteristics, or if any electrical components are repaired or replaced, the machine must be retested.
NOTE: 50 Hz machines may be tested using 60 Hz power.
INPUT IDLE AMPS AND IDLE WATTS
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| Max. Amps |
| Max. Watts |
| Max. Amps |
| Max. Watts |
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| 220/50 or 60 | 2.75 |
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| 425 |
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| 230/60 | 3.00 |
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| 450 |
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| 440/50 or 60 | 1.38 |
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| 425 |
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| 460/60 | 1.50 |
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| 380/50 or 60 | 1.67 |
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| 575/60 |
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| OCV at rated INPUT: |
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| MAXIMUM ACCEPTABLE OUTPUT AMPS (AT MINIMUM OUTPUT SETTINGS) |
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| Output |
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| Min. (Max. acceptable), all machines: |
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| CC modes |
| 12A @ 10V. |
| (GTAW, SOFT, CRISP) |
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| CV modes |
| 20A @ 19V. |
| (FCAW, GMAW) |
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| OUTPUT MINIMUM ACCEPTABLE VOLTS (AT MAXIMUM OUTPUT SETTINGS, |
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| WITH FULL LOAD) |
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| Min. Acceptable, |
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| Max. — All Modes |
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| 1 phase @ 200A |
| 380V |
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| 220/440V |
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| 230/460V | 575V |
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| 38V |
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| 38V |
| 36V |
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| 3 phase @ 300A |
| 32V |
| 36V |
| 34V |
| 38V |
| 36V |
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| AUXILIARY TRANSFORMER — 50 Hz or 60 Hz |
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| TEST POINTS |
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| RANGE |
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| 18 VAC winding to Power Board J7 pins 5 and 6 Welding |
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| terminals sw. remote |
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| 24 VAC winding to Control Board J2 pin 4 to lead 212 |
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| STANDARD CODES: (Test at Amphenol) |
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| 24 VAC without load, measure across pins C and D |
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| 42 VAC without load, measure across pins I and K |
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| 115 VAC without load, measure across pins A and J |
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