Powermax125
Service Manual 808070
205
9 – Power Supply Component Replacement
Replacing the power board
Remove the power board
Complete the instructions below while referring to the applicable figure:
Figure 74 – 480 V / 600 V CSA power board
Figure 75 – 400 V CE / 380 V CCC power board
1.
Complete the following procedures:
a.
Disconnect the power and gas supply
b.
c.
d.
2.
Unplug the 5 wire connectors located at J1, J2, J3, J5, and J6 on the component side of the power board.
Figure 73
3.
Disconnect the gate drive wire connectors (J21, J22) from the power board.
4.
Remove the two 4 μF capacitors from the power board.
5.
Remove all the screws and bolts securing wires to the power board.
6.
Remove all the remaining screws from the power board except the 7 board mounting screws and the 2 transformer
mounting screws.
Kit number
Description
Kit: Powermax125 power board 480 V CSA (141204)
Kit: Powermax125 power board 600 V CSA (141290)
Kit: Powermax125 power board 400 V CE/380 V CCC (141207)
J1
J2
J3
J5
J6
J1
J2
J3
J5
J6