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Water-Cooled Models—Self-Contained Compressor
Liebert
®
Challenger 3000
™
36
4.0 WATER-COOLED MODELS—SELF-CONTAINED COMPRESSOR
4.1 Piping Considerations
Manual shutoff valves should be installed at the supply and return lines of each unit. This will
provide for routine maintenance or emergency isolation of the unit.
When the water source for the condenser is of poor quality, it is good practice to provide cleanable
filters in the supply line. These filters will trap the particles in the water supply and extend the
service life of the water-cooled condenser.
To provide for the emergency of water leaks and the consequences of sub-floor flooding, floor drains
should be provided with wet traps or a water detection system such as a Liebert Liqui-tect
®
sensor
that is installed near the base of the unit or below the elevated floor.
4.2 Condenser
The condenser is designed to operate in conjunction with either a cooling tower or city water. The
maximum water pressure is 150 psig (1034 kPa). A high pressure system rated at 350 psig (2413 kPa)
is available as an option.