York YK-EP Operation And Maintenance Manual page 44

Table 26: Display only fields
Field/LED
Access level
name
Pre-Rotation
Vanes Service
Position
Phase A, B,
C Current
Service
(Solid State
Starter Only)
Oil Pump
Drive
Command
Frequency
(Variable
Speed Oil
Pump Only)
Table 27: Programmable
Field/LED
Access level
name
Pre-Rotation
Vanes Open Service
(Manual)
Pre-Rotation
Vanes Close Service
(Manual)
Pre-Rotation
Vanes Hold Service
(Manual)
Pre-Rotation
Service
Vanes Auto
Fault
Acknowledge
Table 28: Navigation
Button Access level
Home View
Proximity
Probe Service
Calibrate
Pre-Rotation
Vane Service
Calibration
44
Description
This value displays the present position of the Pre-Rotation Vanes as
a percentage between 0 and 100%.
Displays the 3-phase motor current values being read from the Solid
State Starter.
The value displays the present frequency at which the oil pump is
–
being commanded to run.
Description
This key puts the vane control into manual mode and sends an
OPEN command to the vanes.
This key puts the vane control into manual mode and sends a CLOSE
command to the vanes.
This key puts the vane control into manual mode and sends a HOLD
command to the vanes.
This key returns the vane control to automatic mode.
This option allows clearing of the High Speed Thrust Bearing Limit
–
Switch safety shutdown.
Description
Returns user to HOME Screen.
Moves to a subscreen that allows the calibration of the High Speed
Thrust Bearing Proximity Probe.
Only available if the chiller is stopped and the system uses a
Variable Speed Drive or Hot Gas Bypass control. Moves to the
subscreen allowing calibration of the Pre-Rotation Vanes.
YK-EP Style B Centrifugal Chiller