Tweco CutMaster 101 with SL100SV - Manual (Page 109)

Manual 0-4642 5-45 SERVICE
5
E. Heatsink Shroud Assembly Removal
The Heatsink Shroud Assembly must be disengaged for access to either the Main Transformer or the Output Inductor. Follow
these steps for access to either component.
1. Remove the power supply cover per Section 5.09-A.
2. Release the tab on the vertical face of the Heatsink Shroud securing the Solenoid/Pressure Switch Assembly in position.
3. Remove the gas hose from the Regulator Fitting on the back panel of the Power Supply by pressing on the locking ring
on the elbow fitting, while pulling on the hose.
4. Remove the Power Supply Back Panel per subsection 5.07-D.
Remove the grommets from the two holes on the right (rear) edge of the Heatsink Shroud.
5. Remove the Fan Assembly per subsection 5.08C.
6. Label and disconnect the wires connected to the Pilot PC Board.
7. Remove the hardware securing the Pilot PC Board in place. Pull the PC Board off the center chassis.
8. Label and disconnect wires No. 45, 47, 49, and 52 from the Power Output PC Board.
9. Disconnect the wires from the Output Inductor to terminal E43 on the Power Output PC Board.
Disconnect the torch receptacle ground wire connected to the center chassis.
10. Remove nuts on two studs at the top corners of the Heatsink Shroud, and nuts on two studs on the bottom flange of the
Heatsink Shroud.
12. Remove the Heatsink Shroud as follows:
a. Use the open left end of the Heatsink Shroud and the Pressure Switch/Solenoid opening as handles.
b. Pull the Heatsink Shroud away from the center chassis, and then up. It may be necessary to pry the top and bottom
flanges of the Heatsink Shroud slightly to release them from their mounting studs. Movement will be limited by the
wiring harness.