INSTALLATION 24 Manual 0-2470
3.08 GAS CONNECTIONS
Compressed Air or Nitrogen (N2) Only
70 psi (4.8 BAR)
Cutting - 200 scfh (94.4 lpm)
Gouging - 230 scfh (108.5 lpm)
Max input pressure must not exceed 125 psi (8.6 BAR/860kPa)
Air supply must be free of oil, moisture, and other contaminants.
Excessive oil and moisture may cause double-arcing, rapid tip
wear, or even complete torch failure. Contaminants may cause
poor cutting performance and rapid electrode wear.
To test the quality of air, place a welding filter lens in front of the
torch and turn on the gas. Any oil or moisture in the air will be
visible on the lens. Do not initiate an arc!
An air line filter (not included) is required when using air from a
compressor to insure that moisture and debris from the supply
hose does not enter the torch. The filter must be capable of
filtering to at least 5 microns, For highly automated applications,
a refrigerated drier may be used.
The rear panel of the power supply is equipped with a 1/4 NPT
gas input fitting. A quick disconnect coupling (1/4 NPT to #6
barb) is supplied with the unit.
Refer to the manufacturer's specifications for installation and
maintenance procedures for high pressure gas regulators. Do not
use an air line filter with high pressure gas cylinders. To use air
or nitrogen from a high pressure gas cylinder:
1. Examine the cylinder valves to be sure they are clean and free
of oil, grease or any foreign material. Momentarily open each
cylinder valve to blow out any dust which may be present.
2. Each cylinder must be equipped with an adjustable high-
pressure regulator capable of pressures up to 125 psi (8.6
BAR) maximum and flows of up to 700 scfh (328 lpm).
Refer to Figure 3-H (page 25) and:
3. Connect the 1/4 NPT adaptor fitting to the gas input fitting
on the rear panel of the power supply.
4. Connect the 1/4 NPT male side of the quick disconnect
coupling to the adaptor fitting.
5. Connect the supply hose from the high pressure regulator to
the barb side of the quick disconnect coupling.
6. Connect the quick disconnect coupling.
Gases
Pressure
Flow
CAUTION
CAUTION
Checking Air Quality
Filtering
Gas Connections
Using High Pressure
Gas Cylinders
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