FORM 160.54-O1
43
JOHNSON CONTROLS
Pre-Rotation Vanes Control Mode
Access Level Required:
SERVICE
Indicates whether the vanes are under manual or auto-
matic control.
[Pre-Rotation Vanes] Open (LED)
Access Level Required:
SERVICE
Indicates whether the vanes are in the process of opening.
[Pre-Rotation Vanes] Close (LED)
Access Level Required:
SERVICE
Indicates whether the vanes are in the process of closing.
Pre-Rotation Vanes Position
(Variable Speed Drive and Hot Gas Option only
)
Access Level Required:
SERVICE
This value displays the present position of the pre-ro-
tation vanes as a percentage between 0 and 100%.
Full Load Amps
Access Level Required:
SERVICE
Displays the motor current as a percentage of the Full
Load Amps (FLA) value.
Phase A, B, C Current (Solid State Starter only)
Access Level Required:
SERVICE
Displays the 3-phase motor current values being read
from the Solid State Starter.
Oil Pump Drive Command Frequency
(Variable Speed Oil Pump only)
The value displays the present frequency at which the
oil pump is being commanded to run.
prograMMaBLe
[Pre-Rotation Vanes] Open (Manual)
Access Level Required:
SERVICE
This key puts the vane control into manual mode and
sends an
OPEn
command to the vanes.
[Pre-Rotation Vanes] Close (Manual)
Access Level Required:
SERVICE
This key puts the vane control into manual mode and
sends a
CLOSE
command to the vanes.
[Pre-Rotation Vanes] Hold (Manual)
Access Level Required:
SERVICE
This key puts the vane control into manual mode and
sends a
HOLD
command to the vanes.
[Pre-Rotation Vanes] Auto
Access Level Required:
SERVICE
This key returns the vane control to automatic mode.
Fault Acknowledge
This option allows clearing of the High Speed Thrust
Bearing Limit Switch safety shutdown. Service techni-
cians refer to YORK Service Manual 160.54-M1.
NaVigatioN
Home
Access Level Required:
VIEW
Causes an instant return to the Home Screen.
Pre-Rotation Vane Calibration
Access Level Required:
SERVICE
Only available if the chiller is stopped and the system
uses a Variable Speed Drive or Hot Gas Bypass con-
trol. Moves to the sub-screen allowing calibration of the
Pre-rotation vanes. Service Technicians refer to YORK
Service Manual 160.54-M1.
VSD TUNING (Variable Speed Drive only)
Access Level Required:
SERVICE
Moves to the sub-screen allowing advanced tuning of
the Variable Speed Drive. Service Technicians refer to
YORK Service Manual 160.54-M1.
Hot gas
Access Level Required:
SERVICE
Moves to a sub-screen that allows programming of the
Hot Gas Bypass control setpoints and manual control
of the Hot Gas Bypass valve. Only displayed if Hot Gas
Bypass feature has been enabled on the OPERATIONS
Screen. Service technicians refer to YORK Service
Manual 160.54-M1.
Surge
Access Level Required:
VIEW
Moves to the sub-screen that allows viewing and
programming of the Surge Protection feature. Service
Technicians refer to Service Manual 160.54-M1.
2
Summary of Contents for YORK YK MaxE
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