OM-269631 Page 45
7-7. Removing Right Side Panel and Measuring Input Capacitor Voltage
!
Turn Off welding power
source, and disconnect
input power.
!
Significant DC voltage can
remain on capacitors after
unit is Off. Always check the
voltage as shown to be sure
the input capacitors have
discharged before working
on unit.
!
Only qualified persons
should install, operate,
maintain, and repair this
unit.
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 PC10
3
Voltmeter
Measure the dc voltage across the
screw terminals on PC10 as shown
until voltage drops to near 0 (zero)
volts.
.
If the capacitor voltage does
not drop to near zero after sev-
eral minutes, use a bleeder re-
sistor of between 25 and 1000
ohms, at least 5 watts, #16
AWG 1000 volts DC insulating
rating wire to discharge the ca-
pacitor(s) .
4
Typical Bleeder Resistor
An example of a typical bleeder
resistor is shown on this page.
Proceed with job inside unit. Reinstall
right side panel when finished.
Tools Needed:
5/16 in.
Ref. 250 702-B / 269 652-A
2
3
+ lead to lower right terminal,
−
lead to upper right terminal
1
Typical Bleeder Resistor
4
25 to 1000 ohms,
5 watt resistor
#16 AWG 1000 volts DC
insulation rating, approx
3 in. (76 mm) leads
Содержание PipePro XC
Страница 56: ...OM 269631 Page 50 SECTION 8 ELECTRICAL DIAGRAM Figure 8 1 Circuit Diagram For CE Welding Power Source...
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Страница 58: ...OM 269631 Page 52 Figure 8 2 Circuit Diagram For XC RMD Wire Feeder CE...
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