Primary Compressor Screen - York YK-EP Operation And Maintenance Manual

Primary compressor screen

Figure 13: Primary compressor screen
This screen displays a cutaway view of the chiller compressor, revealing the impeller, and shows all
conditions associated with the compressor. With the proper access level, the Pre-Rotation Vanes
may be manually controlled. Animation of the compressor impeller indicates whether the chiller is
presently in a RUN condition. This screen also serves as a gateway to subscreens for calibrating the
Pre-Rotation Vanes, calibrating the Proximity Probe, configuring the Hot Gas Bypass, or providing
advanced control of the Compressor Motor Variable Speed Drive.
Note: For fields requiring access level of SERVICE. Qualified service technicians should refer
to the OptiView Control Center Service for operation instructions and explanations of all
programmable setpoints and displayed values.
Table 26: Display only fields
Field/LED
Access level
name
Oil Sump
Temperature
Discharge
Temperature
Discharge
Superheat
High Speed
Thrust
Bearing
Proximity
Differential
42
Description
– Displays the temperature of the oil in the sump
Displays the temperature of the refrigerant in its gaseous state at
–
discharge of the compressor as it travels to the condenser.
Displays the discharge superheat, calculated as Discharge
–
Temperature – Condenser Saturation temperature.
Displays the present position of the High Speed Thrust Bearing in
– relation to neutral. Locations are shown in mils. Zero indicates that
the bearing is in the normal position.
YK-EP Style B Centrifugal Chiller