Thermal Dynamics CE CutMaster 80XL, Operation Manual

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Manual 0-2724 4-3 OPERATION
A-01152
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Figure 4-5 Rear Panel With Optional Two Stage Air
Filter Installed
4.03 Sequence Of Operation
The following is a typical sequence of operation for this
cutting system. Refer to Appendix 2 for a block diagram.
1. Close main power source disconnect.
a. AC power is available at the Power Supply.
2. Place RUN/SET switch to RUN mode.
3. Place the ON/OFF power switch on the front
panel of the Power Supply to ON.
a. AC Power indicator LED blinks ON and OFF
for eight seconds then stays ON.
b. Fans turn on.
4. Place RUN/SET switch to SET mode.
a. Gas solenoid opens and gas flows to set pres-
sure.
b. GAS indicator turns ON.
NOTE
GAS indicator will not come ON if the gas pres-
sure is set below 45 psi (3.1 bar) at the Regulator/
Filter Assembly.
5. Place RUN/SET switch to RUN mode.
a. Gas flow stops.
b. GAS indicator turns OFF.
6. Protect eyes and press or activate torch switch.
a. Gas pre-flows starts.
b. GAS indicator turns ON.
7. After gas pre-flow (approximately 2 seconds).
a. Power supply enabled.
b. DC indicator turns ON.
c. Pilot relay closes.
8. Pilot arc is established.
9. Move Torch within transfer distance of workpiece.
a. Main arc transfer.
b. Pilot arc OFF.
10. Complete cutting operation.
NOTE
If the torch is lifted from the workpiece, while still
having torch switch activated, the main arc will
stop and the pilot arc will automatically restart.
11. Release or deactivate the torch switch.
a. Main arc stops.
NOTE
If torch is activated during post-flow, pilot arc will
immediately restart.
If torch is within 3/8 in (9.5 mm) transfer distance
of workpiece, main arc will transfer.
12. Gas will flow for 15 seconds (post-flow).
a. Gas solenoid closes.
b. Gas flow stops.
c. GAS indicator turns OFF.
13. Place the ON/OFF power switch on the front
panel of the unit to OFF.
a. AC Power indicator turns OFF.
b. Fans turn OFF.
14. Place the main power disconnect to open.
a. Main AC power is removed from the system.