50 TRG-TRC010-EN
notes
period six
Review
Period 4 described the general maintenance requirements of a centrifugal water
chiller, including:
■ Recommended data for a daily log
■ Required and recommended maintenance for mechanical components
■ Recommended maintenance for heat transfer surfaces
■ Required analyses for the oil and refrigerant
Period 5 presented several considerations in the application of centrifugal water
chillers. These included condensing temperature control for water-cooled
chillers, constant or variable evaporator-water flow, short evaporator-water
loops, heat recovery, free cooling, and equipment certification standards.
Review—Period 4
▲Maintenance considerations
◆Operating log
◆Mechanical components
◆Heat-transfer surfaces
◆Fluid analysis
Figure68
Review—Period 5▲Application considerations
◆Condensing temperature control
◆Constant or variable evaporator-water flow
◆Short evaporator-water loops
◆Heat recovery
◆Free cooling
◆Equipment certification standards
Figure69
trgtrc010_book.book Page 50 Wednesday, September 1, 1999 10:42 AM