Terminal. see figure f.4, Troubleshooting & repair, Main transformer (t1) voltage test – Lincoln Electric IDEALARC DC 1000 SVM123-A User Manual
Page 58
F-18
TROUBLESHOOTING & REPAIR
F-18
a.
If one or more of the above
voltage tests are incorrect,
check for loose or faulty
wiring. If the wiring is good,
then the Main Transformer
may be faulty.
NOTE: A long wire with clip or a
long probe may be required to
reach the lower middle lead.
7.
Test for 115 VAC between leads
#31 to #32 on the terminal strip.
These can be accessed through
the front panel assembly door.
a.
If the 115 VAC is not pre-
sent, check for loose or
faulty wiring or blown fuse.
If necessary, untape and
track the continuity of leads
#31 and #32 through the
entire harness.
b.
If the wiring is good, then the
Main Transformer may be
faulty.
8.
Remove the screws from the control
box cover. It does not have to be
completely removed to perform this
test.
9.
Test with an AC voltmeter for 75
VAC for each phase angle winding
as shown. See Figure F.5.
NOTE: If the main supply voltage
varies, the Main Transformer volt-
ages will vary proportionately. See
Figure F.5.
MAIN TRANSFORMER (T1) VOLTAGE TEST
IDEALARC DC-1000
FIGURE F.4 - Main Secondary Lead Test Points