Miller-electric Invision 456MP User Manual download pdf (Page 40)

OM-193 267 Page 36

6-3. Removing Right Side Panel and Measuring Input Capacitor Voltage in 230/460 Volt

Models

Turn Off welding power source, and

disconnect input power.

1 Right Side Panel

To remove panel, remove screws

securing panel to unit.

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. Rein-

stall right side panel when finished.

Tools Needed:

5/16 in

802 314 / Ref. 802 315

! 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.

230 VAC input:

+ lead to lower

terminal, − lead to

upper terminal

460 VAC input:

+ lead to lower right

terminal, − lead to

upper left terminal

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Miller-electric Invision 456MP User Manual Page 40