Miller Electric Intellifire 250 - Manual (Page 18)

OM-184 227 Page 14
Ref. ST-801 826-A
Tools Needed:
5-7. Measuring Input Capacitor Voltage
3/8 in
Y Significant DC voltage can remain on
capacitors after unit is Off. Always
check ALL capacitors as shown to be
sure they have discharged before
working on unit.
Turn Off power source and
disconnect input power.
Remove wrapper.
1
Input Capacitor C2
2 Input Capacitor C1
3 Input Capacitor C4
4 Input Capacitor C3
5 Voltmeter
Check input capacitors.
Measure the dc voltage across the
positive (+) and negative (−)
terminals every 30 seconds until
voltage is near 0 (zero) volts.
Proceed with job inside unit.
Reinstall wrapper when finished.
1 2 3 4
5