Hypertherm HD4070 Rev.8 - Manual (Page 54)

INSTALLATION
0
HD4070 Instruction Manual 3-13
Supply Gas Plumbing
Rigid copper plumbing or suitable flexible hose may be used for all gas supplies. Do not use steel or aluminum
pipe.
After installation, pressurize the entire system and check for leaks.
Recommended hose diameters are 3/8 inch (9.5mm) for lengths < 75 feet (23m) and 1/2 inch (12.5mm) for
lengths > 75 feet (23m).
For flexible-hose systems, use a hose designed for inert gas to carry air, nitrogen, or argon-hydrogen.
6
Connect the Supply Gases
Connect the supply gases to the HD4070 gas console. Torch leads must be purged between gas changes.
WARNING
CUTTING WITH OXYGEN CAN CAUSE FIRE OR EXPLOSION
C utting with oxygen as the plasma gas can cause a potential fire hazard due to the oxygen-enriched
atmosphere that it creates. As a precaution, Hypertherm recommends that an exhaust ventilation
system be installed when cutting with oxygen.
When configuring the gas console to the supply gases, make sure that
all hoses, hose connections and fittings are acceptable for use with
oxygen, argon-hydrogen and methane. Installation must be made in
accordance with local or national codes.
Fitting Size
Air 9/16 – 18 #6
O
2
9/16 – 18, RH
(oxygen) “B”
CO
2
& N
2
5/8 – 18, RH, internal
(Inert Gas) “B”
H35, H5 & 9/16 – 18 LH,
CH
4
(Fuel Gas)”B”
Inlet Gases
H35 AIR CO 2 H5 CH 4 O 2 N 2
4070.12
2
6
Note: When cutting with oxygen as the plasma gas, nitrogen must also be connected to the gas console to
achieve the proper oxygen-nitrogen mixtures in the preflow and cutflow conditions.