Lincoln Electric INVERTEC V450-PRO - Manual (Page 29)

D-4 MAINTENANCE D-4
INVERTEC V450-PRO (CE)
CURRENT CALIBRATION
PROCEDURE
1. Connect the resistive load band (approxi-
mately .087 ohms) and test ammeter to the
welding output terminals.
2. Press and hold in the Mode
Select/Memory button.
3. Turn on the V450-PRO.
4. Rotate the Output Control knob until the
display reads “cur cAL”.
5. Release the Mode Select/Memory button.
6. The left display will change to “IcAL” to
indicate that current calibration is in
progress.
7. The right display will scroll the following
message: 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 machines output to be
automatically turned off and then back on.
10. Adjust the Output Control knob again if
necessary to make the actual output cur-
rent reading on the test ammeter 300
amps +/-2A.
11. Wait for the machines output to be a u t o -
matically turned off and then back on.
12. Repeat the above two steps if necessary.
13. Press and release the Mode
Select/Memory button to save the calibra-
tion.
14. The left display will scroll the message
IcAL SAVEd.
15. The machine will reset to normal operation.
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.
VOLTAGE AND CURRENT CALIBRATION PROCEDURE (continued)