Hypertherm Powermax30 AIR Service Manual - Manual (Page 128)

128 Powermax30 AIR Service Manual 808850
6 – Power Supply Component Replacement
6. On the back of the power board, remove the wire connectors for the transformers and inductors. See Figure 49.
a. Remove J13, J14, and J15, located on the front panel end of the power board.
b. Remove J18 and J19, located on the rear panel end of the power board.
c. Remove J20 and J21, located on the bottom center of the power board.
7. Remove the work lead ring terminal from J22.
8. Remove the 2 retaining screws.
9. Remove the 3 screws that attach the IGBTs to the heatsink and the 2 screws that attach the input diode bridges to
the heatsink. Holes in the power board provide access to the 2 input diode bridge screws.
10. Remove the 4 heatsink assembly screws.
Figure 49
WORK LEAD (BLK)
AC AC
R
w
TORCH
START
BLK
BLK
B
TORCH START
1
2
4
3
2
2
1
2
11
12
13
5
6
7
8 9 10
Ferrite on CE power supplies only
1 Retaining screws (2)
2 Heatsink assembly screws (4)
3 J12 (TORCH START connector)
4 J13
5 J14
6 J15
7 J22 (work lead)
8 J21
9 J20
10 J19
11 J18
12 Input diode bridge screws (2)
13 IGBT screws (3)