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4
RLC-PRC005-E4
Water Chiller Systems Business Unit
The Series R
™
Helical-Rotary Compressor
• Unequaled reliability. The next
generation Trane helical-rotary
compressor is designed, built, and
tested to the same demanding and
rugged standards as the Trane scroll
compressors, the centrifugal
compressors, and the previous
generation helical-rotary compressors
used in both air- and water-cooled
chillers for more than 13 years.
• Years of research and testing. The
Trane helical-rotary compressor has
amassed thousands of hours of
testing, much of it at severe operating
conditions beyond normal commercial
air-conditioning applications.
• Proven track record. The Trane
Company is the world’s largest
manufacturer of large helical-rotary
compressors used for refrigeration.
Over 90,000 compressors worldwide
have proven that the Trane helical-
rotary compressor has a reliability rate
of greater than 99.5 percent in the first
year of operation—unequalled in the
industry.
• Resistance to liquid slugging. The
robust design of the Series R
compressor can ingest amounts of
liquid refrigerant that normally would
severely damage reciprocating
compressor valves, piston rods, and
cylinders.
• Fewer moving parts. The helical-rotary
compressor has only two rotating
parts: the male rotor and the female
rotor. Unlike reciprocating
compressors, the Trane helical-rotary
compressor has no pistons,
connecting rods, suction and
discharge valves, or mechanical oil
pump. In fact, a typical reciprocating
compressor has 15 times as many
critical parts as the Series R
compressor. Fewer moving parts leads
to increased reliability and longer life.
• Direct-drive, low-speed, semi-hermetic
compressor for high efficiency and
high reliability.
• Field-serviceable compressor for easy
maintenance.
• Suction-gas-cooled motor. The motor
operates at lower temperatures for
longer motor life.
• Five minute start-to-start and two
minute stop-to-start anti-recycle timer
allows for closer water-loop
temperature control.