Hypertherm XPR300, Instruction Manual

Page: 48 / 402

Qualifications and Requirements
2
48 809480 Instruction Manual XPR300
Plumbing and hose requirements for shield water
You must supply the plumbing and hoses for the shield water.

You can use flexible hoses that are designed to carry water.

For the best results, use the recommended torque specifications for plumbing and hose
fittings. (See
Table 11 on page 48.)

You can use rigid copper pipes.

Do not use steel or aluminum pipes.
Install the plumbing and hoses consistent with all local and national codes. After installation,
pressurize the entire system and test it for leaks.
To decrease the risk of leaks in the cutting system, make sure to tighten all connections to the
recommended torque specifications in
Table 11 on page 48.

Hoses are available from Hypertherm. (See Water (optional shield fluid)
(blue) on page 369 of the Parts List .)
Additional regulator requirement for shield water (optional)
Water pressure regulators are built into the VWI and OptiMix gas connect consoles. Additional
water pressure regulators are only required when the water pressure is above 7.92 bar (115 psi).
Torque requirements for gas or water plumbing and hose connections
For the best results, use the recommended torque specifications for plumbing and hose fittings.
Table 11 – Torque specifications
Torque Specifications
Gas or water hose size N∙m in∙lb
f
ft∙lb
f
Up to 10 mm (3/8 inch) 8.5 – 9.5 75 – 84 6.25 – 7
12 mm (1/2 inch) 16.3 – 19.0 144 – 168 12 – 14
25 mm (1 inch) 54.2 – 88.1 480 – 780 40 – 65