Tweco PAK 200i - Manual (Page 22)

PAK 200i
2-� SPECIFICATIONS Manual 0-5335
2.08 Gas Requirements
The customer will provide all gases and pressure regulators. Gases must be of high quality. Pressure regulators
shall be equipped with stainless-steel diaphragms and installed as close as possible to the Gas Console. Specify Dual
Stage Stainless diaphragm regulators for hi-pressure cylinders (> 400 inlet psi) (example: Victor VTS-450-D-500,)
Single stage Station-stainless diaphragm regulator for low pressure (< 350 inlet psi) liquid or bulk tank supply ap-
plication (example Victor # LC-350DR).
MATERIAL MILD STEEL STAINLESS STEEL ALUMINUM
OPERATION GAS TYPE GAS TYPE GAS TYPE
Plasma Shield Plasma Shield Plasma Shield
35-200 A Cut Air Air H35 N2 H35 N2
N2 N2 N2 N2
Table 2-6: Gas Requirements
PAK 200i Power Supply: Gas Pressures, Flows, and Quality Requirements
Gas Quality Minimum Pressure Flow
N
2
(Nitrogen)
99.5% Purity
(Liquid recommended)
<1000 ppm O
2
, <32 ppm H
2
O)
80 psi
5.5 bar / 827 kPa
350 scfh (165 l/min)
Compressed
Air
Clean, Dry,
Free of Oil (see Note 1)
90 psi
6.2 bar / 621 kPa
450 scfh (212 1/min)
H35 (Argon-Hydrogen)
H35 = 35% Hydrogen,
65% Argon
99.995% Purity
(gas recommended)
90 psi
6.2 bar / 827 kPa
100 scfh (47 1/min)
Note 1: The air source must be adequately filtered to remove all oil or grease. Oil or grease contamination from
compressed or bottled air can cause fires in conjunction with oxygen.
For filtering, a coalescing filter able to filter to 0.01 microns should be placed as close as possible to the gas inlets
on the Gas Control Module.
Table 2-7: Gas Pressures, Flows, & Quality Requirements