Hypertherm HT4400 HySpeed Plasma Arc Cutting System - Manual (Page 36)

INSTALLATION
3-2 HT4400 Instruction Manual
4-00
Installation Requirements
All installation and service of the electrical and plumbing systems must conform to national or local codes.
This work should be performed only by qualified, licensed personnel.
Direct any technical questions to the nearest Hypertherm Technical Service Department listed in the front of this
manual, or your nearest authorized Hypertherm distributor.
Gas Requirements
The customer furnishes all gases and gas-supply regulators for the system. Use a high-quality, 2-stage pressure
regulator located within 10 ft (3 m) of the gas console. See Appendix C for gas regulator recommendations. Refer
to Section 2 for gas and flow specifications.
Caution: Gas supply pressures not within the parameters outlined in Section 2 can cause poor cut
quality, poor consumable life, and operational problems.
If the purity level of the gas is too low or if there are leaks or contamination in the supply
hoses or connections,
• Cut speeds can decrease
• Cut quality can deteriorate
• Cutting thickness capability can decrease
• Parts life can shorten
Gas Supply Plumbing
Rigid copper plumbing or suitable flexible hose may be used for all gas supplies. Do not use steel pipe. After instal-
lation, pressurize the entire system and check for leaks.
For flexible-hose systems, use a hose designed for inert gas to carry air or nitrogen.
CAUTION: Only hose designed to carry oxygen may be used for oxygen lines.
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.
WARNING
CUTTING WITH OXYGEN CAN CAUSE FIRE OR EXPLOSION
Cutting 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.