Miller CST 280 Owner's Manual - Page 21

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Miller CST 280 Owner's Manual

3-9. TIG Lift-Arct DCEN (Direct Current Electrode Negative) Connections

1
7
2
1
Connect work lead to positive weld
output terminal.
4
2
5
6
Connect TIG torch to negative weld
output terminal.
3
3
4
Open valve slightly so gas flow
blows dirt from valve. Close valve.
5
6
Typical flow rate is 15 cubic feet per
hour (7.1 liters per minute).
Connect
regulator/flowmeter .
7
Valve controls gas preflow and
postflow. Open valve on torch just
before welding.
Positive (+) Weld Output
Terminal
Negative (−) Weld Output
Terminal
Gas Cylinder
Cylinder Valve
Regulator/Flowmeter
Flow Adjust
torch
gas
hose
to
Gas Valve
Tools Needed:
11/16 in, 1-1/8 in, (21 mm)
803 943-A
OM-217 655 Page 17