Tweco 150XL CE PAK Master - Manuel (Page 32)

OPERATION 4-4 Manual 0-2826
7. After gas pre-flow (approximately 2 seconds)
a. Power Supply enabled.
b. DC indicator turns ON.
8. Pilot arc is established.
9. Move Torch within transfer distance of workpiece.
a. Main arc transfer.
b. Pilot arc OFF.
10. Torch is ready to cut. Complete cutting operation.
NOTE
If the torch is lifted from the workpiece while still
having the torch switch 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.
NOTE
If the torch is activated during post-flow, pilot arc
will immediately restart.
If the torch is within 3/8 inch (9.5 mm) transfer
distance of workpiece, main arc will transfer.
12. Gas will flow for 20 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 oper-
ated:
WARNING
Disconnect primary power at the source before dis-
assembling the power supply, torch, or torch leads.
A. Coolant Level Inspection
Check the coolant level at the coolant reservoir at the
rear of the unit. If the coolant is down from the top of
the reservoir more than 2 inches (50 mm), add cool-
ant.
NOTE
The label on the coolant reservoir indicates the level
at which coolant should be added.
B. Deionizer Bag Inspection
Check the condition of the deionizer bag in the reser-
voir basket. If the bag is a yellowish brown (straw
color) then replace the bag.
C. Torch Parts Selection
Check the torch for proper parts assembly. Install
proper torch parts for the application (refer to Torch
Instruction Manual).
D. Primary Input Power Source
Check the power source for proper input voltage.
Make sure the input power source meets the power
requirements for the unit per Section 2.03, Specifica-
tions/Design Features.
Connect the input power cable (or close the main dis-
connect switch) to supply power to the system.
E. Plasma Gas Supply Selection
Select desired plasma gas. Make sure gas sources meet
requirements (refer to Torch Instruction Manual).
Check connections and turn plasma gas supply on.
F. Secondary Gas Supply Selection
Select desired secondary gas. Make sure gas sources
meet requirements (refer to Torch Instruction Manual).
Check connections and turn secondary supply on.