Water Requirements - Hypertherm HyPrecision 100D Instruction Manual

Water Requirements

Local codes may require that a back-flow prevention valve be supplied to separate
the pump from the building potable water. Consult local codes for the required
type and necessity of a valve.
IMPORTANT
Cutting Water
The water supplied to the intensifier is a crucial factor in precision waterjet cutting because of its direct
effect on the service life of equipment components. The pump's built-in filtration is sufficient for
removal of suspended solids. Total Dissolved Solids (TDS) in the inlet water will have an adverse effect
on check valves, seals, orifices, and other consumables. Most systems require that the water be softened
at a minimum before it enters the pump.
Before installing the system have a water quality analysis performed by a local company that can
provide water-conditioning equipment. See the Inlet Cutting Water Requirements section under
Specifications for specific conditioning requirements.
Cooling Water (if supplied with a Water/Oil Heat Exchanger)
The heat exchanger uses regular tap water for cooling the hydraulic fluid. Hydraulic fluid temperature
must be maintained below 130ºF. The hydraulic cooling water section of the Specifications area of
this manual details the cooling water flow and temperature requirements.
In most cases public-utility water is acceptable. In situations where the water contains heavy mineral
deposits, the cooling fins in the heat exchanger may become clogged with buildup. In these
circumstances pre-filtration and/or softening may be necessary. Depending on plant setup, ambient
temperature can also be a factor in cooling. Where the equipment is confined to a small high-
temperature space, additional cooling may be required.
Sewer Requirements
The pump has two outlet lines. The WASTE WATER OUT line carries any rejected cut water from the
bleed-down valve. The COOLING OUT line carries the water exiting the heat exchanger in water
cooling units. DO NOT couple lines.
Both outlets require independent lines to the sewer drain to prevent exiting cooling water from backing
up into the system. The wastewater outlet plumbing must be lower than the outlet connection on the
pump. This will prevent potentially dirty water from backing into the bleed down valve causing closure
problems.
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