Tweco 300 Maximizer - Manual (Page 22)

INSTALLATION 3-4 Manual 0-2554
3.07 Gas Connection
A. Connection
Connect the gases to the Power Supply as described in
the Power Supply Operating Manual (0-2251) supplied
with the Power Supply.
CAUTION
Air supply must be free of oil, moisture, and other
contaminants. Excessive oil and moisture may
cause double-arcing, rapid tip wear, or even com-
plete torch failure. Contaminants may cause poor
cutting performance and rapid electrode wear.
B. Checking Air Quality
To test the quality of air, place a welding filter lens in
front of the torch and turn on the gas. Any oil or mois-
ture in the air will be visible on the lens. Do not initiate
an arc!
C. Filtering
An in-line pneumatic dryer/evaporator type air filter,
capable of filtering to at least 5 microns, is required when
using air from a compressor. This type filter will insure
that moisture, oil, dirt, chips, rust particles, and other
contaminants from the supply hose do not enter the torch.
For highly automated applications, a refrigerated drier
may be used.
NOTE
Do not use an air line filter with high pressure gas
cylinders.