Tweco 300 Auto-Cut - Manual (Page 76)

Manual No. 0-4817 Auto-Cut 300 4-8 OPERATION
4. Place RUN/SET switch to SET mode.
a. Gases flow to set pressures.
5. Place RUN/SET switch to RUN mode.
a. Gas flow stops.
6. Protect eyes and start torch.
a. Gas pre-flows starts.
7. After gas pre-flow:
a. Power supply enabled. DC lamp turns ON.
8. Pilot arc is established.
9. Move Torch within transfer distance of workpiece.
a. Main arc transfers to the workpiece. Pilot arc shuts off.
10. Complete cutting operation.
11. Stop the torch.
a. Main arc stops.
12. Gas will flows briefly (‘post-flow’).
a. Gas solenoid closes; gas flow stops:
13. Set the ON/OFF power switch on the front panel of the unit to OFF.
a. AC Power lamp turns OFF.
b. Fan and pump turn OFF.
14. Place the main power disconnect to open.
a. Main AC power is removed from the system.