
42 TRG-TRC012-EN
notes
period six
Review
In Period 4, the general maintenance requirements of a helical-rotary water
chiller were discussed, including:
■Recommended data to be logged daily
■Required and recommended maintenance of the mechanical components
■Required and recommended maintenance of the heat transfer surfaces
■Recommended analysis of the oil and refrigerant
In Period 5, several considerations in the application of helical-rotary water
chillers were presented. These included air-cooled or water-cooled condensing,
condensing temperature control, constant or variable evaporator water flow,
short evaporator water loops, and equipment certification standards.
Review—Period 4▲Maintenance considerations
◆Operating log
◆Mechanical components
◆Heat transfer surfaces
◆Fluid analysis
Figure 60
Review—Period 5
▲Application considerations
◆Air-cooled or water-cooled
◆Condensing temperature control
◆Constant or variable evaporator water flow
◆Short evaporator water loops
◆Equipment certification standards
Figure 61