Removing Case And Measuring Input Capacitor Voltage For 230/460 Volt Model - Miller Auto Invision II Owner's Manual

12-3. Removing Case And Measuring Input Capacitor Voltage For 230/460 Volt Model

Tools Needed:
5/16 in
230 VAC input:
+ lead to lower terminal, –
lead to upper terminal
+ lead to lower right terminal,
– lead to upper left terminal
OM-201 396 Page 70
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.
1
2
3
2
3
460 VAC input:
1
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 Relinking Board PC6
3 Voltmeter
Measure the dc voltage across the
screw terminals on PC6 as shown
until voltage drops to near 0 (zero)
volts.
Proceed with job inside unit.
Reinstall cover when finished.
801 914 / 801 917