Powermax30 AIR
Service Manual
808850
83
5 – Troubleshooting and System Tests
6.
Measure the voltage from W to R. See
.
a.
Position the test hooks on W and R on the power board.
b.
Turn the power ON (
I
).
c.
The multimeter should read 375 VDC.
If you get a value other than 375 VDC, multiply the reading by 0.00601 to convert it to millivolts. Test pin 21 on J7.
See
Test 2 – power board voltage checks
on page 80. If the values match, it is a normal reading.
7.
Measure the voltage from W to B.
a.
Turn the power OFF (
O
).
b.
Move the test hooks to W and B.
c.
Turn the power ON (
I
).
d.
This value should be 187.5 VDC or one-half of the value found in
.
8.
Measure the voltage from R to B.
a.
Turn the power OFF (
O
).
b.
Move the test hooks to R and B.
c.
Turn the power ON (
I
).
d.
This value should be 187.5 VDC or one-half of the value found in
.
9.
The values found in
should be approximately equal. If they differ by more than 30 V, replace the
power board.
Figure 13
WORK LEAD (BLK)
BLK
BLK
TORCH
START
AC
AC
R
w
Summary of Contents for Powermax30 AIR
Page 6: ......
Page 24: ...24 Powermax30 AIR Service Manual 808850 1 Specifications ...
Page 32: ...32 Powermax30 AIR Service Manual 808850 2 Power Supply Setup ...
Page 96: ...96 Powermax30 AIR Service Manual 808850 5 Troubleshooting and System Tests ...
Page 184: ...184 Powermax30 AIR Service Manual 808850 6 Power Supply Component Replacement ...
Page 200: ...200 Powermax30 AIR Service Manual 808850 7 Torch Component Replacement ...
Page 223: ...Powermax30 AIR Service Manual 808850 223 9 Wiring Diagrams 013393 Rev A SHEET 2 of 2 ...