Tweco 100XL Plus PAK Master - Manuel (Page 34)

OPERATION 4-4 Manual 0-2811
10. Complete cutting operation.
NOTE
If the torch is lifted from the workpiece, while still
having torch is activated, the main arc will stop
and the pilot arc will automatically restart.
11. Stop system (CNC stop signal or release Remote
Hand Pendant switch)
a. Main arc stops.
b. Pilot arc stops (power supply enable signal re-
moved).
NOTE
If torch is activated during post-flow, pilot arc will
immediately restart.
If torch is within 3/8 in (9.5mm) 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.
4.04 Preparations for Operating
Follow this set-up procedure each time the system is op-
erated:
WARNING
Disconnect primary power at the source before dis-
assembling the power supply, torch, or torch leads.
A. Torch Parts Selection
Check the torch for proper assembly and appropriate front
end torch parts. The torch parts (shield cup, tip and elec-
trode) must correspond with the type of operation (cut-
ting or gouging).
B. Check Primary Power Source
1. Check the power source for proper input voltage. Make
sure the input power source meets the power require-
ments for the unit per Section 2.03-A-4, Specifications/
Design Features.
2. Connect the input power cable (or close the main dis-
connect switch) to supply power to the system.
C. Gas Selection
Select desired gas (air or nitrogen). Make sure gas source
meets pressure and flow requirements (refer to Section
3.08, Gas Connections). Check connection and turn gas
supply on.
D. Work Cable Connection
Check for a solid and clean work cable connection to the
workpiece or cutting table. The area must be free from
paint and rust.
E. Torch Connection
Check that the torch is properly connected.
F. Power Supply On
Move the ON/OFF switch to ON position.
G. Select Output Current
Select the desired current output level for the operation:
• 15 to 80 amps for standoff cutting and gouging
• 15 to 35 amps for drag cutting
NOTE
At output settings over 35 amps, the power sup-
ply automatically reduces output current to 35
amps if the torch tip touches the workpiece.