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Site (Water-cooled units)Site (Water-cooled units)
Site (Water-cooled units)Site (Water-cooled units)
Site (Water-cooled units)
The unit should be located in a laboratory or clean industrial environment with
easy access to a facility cooling water supply and a drain.
All units are equipped with castors for easy movement. This allows the unit
to be placed in a small area, as long as there is ample space for the unit to
be moved for access on all four sides. A minimum access clearance of 3
feet (1 meter) on two adjacent sides is recommended.
The facility cooling water supply must meet or exceed the requirements
listed in the table shown on the next page for the unit to operate at its full
rated capacity. If the facility cooling water does not meet these standards,
the cooling capacity will be derated.
As the temperature of the cooling water supply increases, the required flow
rate and pressure of the cooling water supply increases. For example, with a
model HX-150, if the temperature of the cooling water supply is +65°F, the
flow rate must be at least 1.5 gallons per minute, with a pressure differential
of at least 3.5 PSI. However, if the temperature of the cooling water supply is
+85°F, the flow rate must be at least 4.0 gallons per minute, with a pressure
differential of at least 10 PSI.
If the unit is being used with a building water supply, the back pressure of
the drain must be less than the supply pressure.
A water regulating valve, located in the TAP WATER line, regulates the flow
rate of the cooling water supply as it enters the unit. The valve regulates the
flow rate based on the heat load. Flow through the unit stops automatically
when the unit is shut off.
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