Miller Electric Welder User Manual
Page 32
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OM-196 188 Page 26
5-3.
Removing Case and Measuring Input Capacitor Voltage
Turn Off welding power source, and
disconnect input power.
1
Outside Handle Screws
To loosen top, remove two outside
handle screws from both handles
and all side bolts.
2
Interconnect Board PC2
3
Voltmeter
Measure the dc voltage across the
screw terminals on PC2 as shown
until voltage drops to near 0 (zero)
volts.
Proceed with job inside unit. Rein-
stall cover when finished.
Tools Needed:
5/16 in
Ref. 801 914 / Ref. 801 917
Y
Significant DC voltage can remain on capacitors af-
ter unit is Off. Always check the voltage as shown
to be sure the input capacitors have discharged be-
fore working on unit.
2
3
+ lead to lower right
terminal, – lead to
upper right terminal
1
1
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