Carrier 17/19EX - Manual (Page 52)

PIC System Components
The Product Integrated Control (PIC) is the control system on the machine. See Table 1 . The
PIC controls the operation of the machine by monitoring all operating conditions. The PIC can
diagnose a problem and let the operator know what the problem is and what to check. It
promptly positions the guide vanes to maintain leaving chilled water temperature. It can
interface with auxiliary equipment such as pumps and cooling tower fans to turn them on only
when required. It continually checks all safeties to prevent any unsafe operating condition. It
also regulates the oil heater while the compressor is off, and the hot gas bypass valve, if
installed.
The PIC can be interfaced with the Carrier Comfort Network (CCN) if desired. It can
communicate with other PIC-equipped chillers and other CCN devices.
Click here for Figure 6 — Open-Drive (17 Series) Lubrication Cycle