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
