Section 2
Installation
20425561
5-2005/Rev 0
2-6
If a facility-wide chilled water system is used for cooling, ensure there is a minimum of 35 psi
(2.4 bar) pressure differential between the facility supply and discharge plumbing. Installation of
an in-line pressure boosting pump may be necessary to provide adequate cooling flow.
Cutting Water
Inlet cutting water is routed to the intensifier where it is pressurized and delivered to the cutting
head. The cutting water supply must meet the minimum water quality standards outlined in
Section 10, Specifications. Poor water quality will drastically shorten component life and void
the warranty.
Cutting water supply piping must be sized to meet the flow and pressure requirements listed in
Section 10. Only PVC, copper or rubber hose should be used between the cutting water source
and the machine.
The inlet cutting water on base units must be maintained at a minimum pressure of 60 psi (4 bar)
at all times. If the facility water pressure is below, or can fall below 60 psi (4 bar), a water
pressure booster pump is required.
NOTE
If the machine is equipped with the optional booster pump and water filter, the
inlet water must be maintained at a minimum pressure of 35 psi (2.4 bar) at all
times.
Optional Drain
Cutting water released through the optional safety dump valve or the relief valve on the booster
pump is discharged from the drain port. The discharge is considered wastewater and must be
piped to an appropriate location, i.e. a sewer line. The volume of water released will be minimal
and does not require high pressure plumbing, however, piping must comply with local, regional
and national codes.
Optional Plant Air
The facility compressed air connection should provide clean, dry air regulated to 85 psi (5.9 bar).
Air usage is minimal, normally less than 1 scf/m.
2.6 Flow Requirements
Figure 2-4, Pressure Drop Values, illustrates the pressure drop for four different pipe sizes. The
graph can be used to calculate the minimum source water pressure.
1. Enter the graph at the required GPM and note the pressure drop figures for the different
pipe sizes.
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