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MANUAL/AUTO STATION (CAPACITY CONTROLS) SCREEN
FIG. 18 - MANUAL/AUTO STATION (CAPACITY
DISPLAY
Leaving Chilled Liquid Temperature
Displays the temperature of the leaving chilled liquid
Leaving Chilled Liquid Temperature Setpoint
Displays the leaving chilled liquid temperature
setpoint
Compressor Head
Displays the head pressure expressed as a differential
pressure between the compressor suction and
discharge
Engine Speed
Displays current engine speed in rpm
Engine Speed Setpoint
Displays the engine speed setpoint
Hot Gas Valve
Displays the current position of the hot gas valve
PRV Position
Displays the current pre-rotation vane position from
open to closed in percent
PRV Open/Close
Indicates whether the pre-rotation vane actuator is
opening or closing
INTERACTIVE
(F1) Hot Gas Valve
Allows the operator to manually adjust the position of
the hot gas valve from fully open to fully closed
YORK INTERNATIONAL
CONTROLS) SCREEN
(F3) Pre-rotation Vanes
Allows the operator to manually adjust the position of
the pre-rotation vanes from fully open to fully closed
(F5) Speed Setpoint
Allows the operator to manually adjust the engine
speed setpoint from minimum allowable to
maximum allowable speed
Hot gas, pre-rotation vanes and engine
speed setpoints may be changed by press-
ing the F1, F3 and F5 buttons respectively.
Press the appropriate function keys to in-
crease or decrease the setting depicted in
the graphic.
If the Hot Gas Valve is switched
to manual control using the F1
AUTO tab and the valve is manually
moved more than 5% away from
the automatic setting, it will not be
possible to toggle back to automatic
control. The message "Manual/Auto
Transfer Inhibit" will appear in the
bottom left-hand corner of the screen.
Manually adjust the Hot Gas Valve
to match the automatic setting before
re-engaging automatic control.
FORM 160.60-O2 (1004)
LD09892
27
2
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