Hypertherm Powermax125 Service Manua - Manual (Page 229)

Powermax125 Service Manual 808070 229
9 – Power Supply Component Replacement
Replacing the bulk capacitors
1. Complete the following procedures:
a. See Disconnect the power and gas supply on page 166.
b. See Remove the power supply cover on page 172.
c. See Remove the component barrier on page 173.
d. See Remove the fan shroud on page 216.
2. Remove the 4 bulk capacitor mounting screws from the power board.
 The C152 top mounting screw also secures an inductor wire to the power board.
Figure 87
3. From the fan side of the power supply, remove the bulk capacitors by pulling them straight out.
4. Insert the new bulk capacitors from the fan side of the power supply, noting the orientation of the polarity dot in
regard to the viewing hole in the power board. See Figure 88 on page 230.
5. From the fan side, rotate each capacitor until the polarity dot aligns with the viewing hole on the front side of the
power board.
6. Secure the inductor wire with the C152 top mounting screw. Start the 4 supplied mounting screws by hand, then
tighten to 40.3 kg-cm (35 inch-pounds).
Kit number Description
428136 Kit: Powermax125 bulk capacitor 480 V CSA
228888 Kit: Powermax105 bulk capacitor CSA, 230 – 400 V CE; Powermax125 bulk capacitor
600 V CSA
428135 Kit: Powermax125 bulk capacitor 400 V CE/380 V CCC
C151 C152
+
+
_
_
C151 C152
+
+ _
_
Mounting screws (4)