.
A complete Parts List is available at www.MillerWelds.com
OM-254915 Page 55
221 044-A / Ref. 803 550-B
!
Turn Off welding power
source, and disconnect in-
put power.
!
Significant DC voltage can
remain on capacitors after
unit is Off. Always check ca-
pacitors as shown to be sure
they have discharged before
working on unit.
Turn Off welding power source and
disconnect input power.
Remove case.
1
Input Capacitor C3 Terminals
2
Input Capacitor C4 Terminals
3
Voltmeter
Check input capacitors as shown.
Measure the dc voltage across the
positive (+) and negative (
−
)
terminals until voltage drops to near
0 (zero) volts.
4
Typical Bleeder Resistor
An example of a typical bleeder re-
sistor is shown on this page.
Proceed with job inside unit.
Reinstall case when finished.
Tools Needed:
5/16 in.
3
7-6. Measuring And Discharging Input Capacitor Voltage
3
2
1
Typical Bleeder
Resistor
25 to 1000 ohm,
5 watt resistor
#16 AWG 1000
volts dc insulation
rating, approx 3 in
(76 mm) leads
4
Summary of Contents for Millermatic 350P
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