POWER-MASTER 500 - Victor Technologies

430581-004 POWER-MASTER 500
E) Ad just the out put am per age con trol of the
Power-Mas ter 500 un til the am per age dis play
reads ex actly 100.
F) Ver ify the ac tual load amps us ing the ex ter nal
shunt. Load amps should be 100 ± 4 amps.
There is no cal i bra tion ad just ment, if the cal i bra -
tion is off then ei ther the cur rent sen sor or the
con trol board is out of cal i bra tion. At 100 amps of
load cur rent the cur rent sen sor out put should be
0.80 Volts dc.
G) De-en er gize the out put by re mov ing the gun
switch sig nal.
H) Set the ma chine to GMAW mode.
I) Pre set the out put to 24.0 Volts.
J) En er gize the out put us ing the gun switch in put.
The contactor switch on the front panel can not
be used or the volt age read ings will be off.
K) Ver ify the volt age read ing on the front panel
dis play is 24.0 ± 0.2 volts.
L) Ad just the out put volt age con trol on the front
panel of the Power-Mas ter un til the volt age dis -
play reads ex actly 24.0 volts.
M) Ver ify the out put ter mi nal volts di rectly on the
cop per bus bar of the out put ter mi nal us ing the
ex ter nal dig i tal me ter read ing av er age volts.
Volt age should be 24.0 ± 0.5 Volts.
N) If the volt age is out of cal i bra tion, it can be ad -
justed with R68 on the main con trol board.
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