Plasma Power Supply
30 809970 Field Service Bulletin XPR300
Left-side (control-side) parts
Replace the chopper
See Control side – view 2 on page 127 for locations and part numbers.
Remove the chopper
1. Complete the following procedures:
a. Remove the power from the cutting system.
b. See Remove the right-side (liquid-cooling-side) panel on page 60.
c. See Remove the left-side (control-side) panel on page 61.
d. Drain the coolant. See Remove old coolant from the coolant system in the Maintenance
section in the XPR300 Instruction Manual (809480).
Keep all nuts and screws that you remove.
2. Use tape to attach protective material, such as cardboard, onto the rear of the heat-exchanger
assembly to protect the cooling fins.
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