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VOLTAGE AND CURRENT CALIBRATION PROCEDURE (continued)
CURRENT CALIBRATION PROCEDURE
NOTE: If the Mode SELECT/MEMORY button is
not pressed within 30 seconds after
adjusting the Output Control knob the
machine will leave the calibration mode
and use the previous calibration settings.
1. Connect the resistive load band (approximate-
ly .087 ohms) and test ammeter to the welding
output terminals.
2. Press and hold in the Mode SELECT/MEMO-
RY button.
3. Turn on the V450-PRO.
4. Rotate the Output Control knob until the dis-
play reads “cur cAL”.
5. Release the Mode SELECT/MEMORY but-
ton.
6. The left display will change to “IcAL” to indicate
that current calibration is in progress.
7. The right display will scroll the following mes-
sage: Adj oCP SorEAL cur-300A.
8. Adjust the Output Control knob until the actual
output current reading on the test ammeter is
300amps +/-2A.
9. Wait for the machine’s output to be
automatically turned off and then back on.
10. Adjust the Output Control knob again if nec-
essary to make the actual output current read-
ing on the test ammeter 300 amps +/-2A.
11. Wait for the machine’s output to be automati-
cally turned off and then back on.
12. Repeat the above two steps if necessary.
13. Press and release the Mode SELECT/MEM-
ORY button to save the calibration.
14. The left display will scroll the message IcAL
SAVEd.
15. The machine will reset to normal operation.
TROUBLESHOOTING AND REPAIR
F-17 F-17
INVERTEC® V450-PRO
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