York YST - Turbine Excessive Vibration Warning Messages

JOHNSON CONTROLS
136
FORM 160.67-O1
ISSUE DATE: 4/1/2015
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
TURBINE EXCESSIVE VIBRATION WARNING
MESSAGES
When MSSP4-Turbine Start Mode is set for Auto on
Configuration Screen 1, the turbine must be fitted with
two proximity probes on each end of the turbine to
protect the turbine from excessive shaft vibration. The
“Horizontal” designation refers to the proximity probe
installed at approximately 45 degrees from the vertical
center on the right side when facing the governor end
of the turbine. The “Vertical” designation refers to the
proximity probe installed at approximately 45 degrees
from the vertical center on the left side when facing
the governor end of the turbine. When MSSP4-Turbine
Start Mode is set for Manual, MSSP13-Turbine Shaft
Vibration Sensors must be set for Enabled on Configu-
ration Screen 1. When the sensors are enabled, the fol-
lowing messages are also enabled:
“ Warning - Turbine - Shaft End Horizontal
Vibration”
The input signal from the Turbine Shaft End Horizon-
tal Vibration Transmitter is above the TVSP1-Turbine
Vibration Alarm setpoint shown on the Alarm/Shut-
down Setpoints Screen. This check is bypassed dur-
ing shutdown until the start sequence is initiated. The
message will automatically clear when the input signal
decreases to 0.1 Mil below the Alarm Setpoint.
“ Warning - Turbine - Shaft End Vertical
Vibration”
The input signal from the Turbine Shaft End Vertical
Vibration Transmitter is above the TVSP1-Turbine Vi-
bration Alarm setpoint shown on the Alarm/Shutdown
Setpoints Screen. This check is bypassed during shut-
down until the start sequence is initiated. The message
will automatically clear when the input signal decreas-
es to 0.1 Mil below the Alarm Setpoint.
“ Warning - Turbine - Governor End Horizontal
Vibration”
The input signal from the Turbine Governor End Hori-
zontal Vibration Transmitter is above the TVSP1-Tur-
bine Vibration Alarm setpoint shown on the Alarm/
Shutdown Setpoints Screen. This check is bypassed
during shutdown until the start sequence is initiated.
The message will automatically clear when the input
signal decreases to 0.1 Mil below the Alarm Setpoint.
“ Warning - Turbine - Governor End Vertical
Vibration”
The input signal from the Turbine Governor End
Vertical Vibration Transmitter is above the TVSP1-
Turbine Vibration Alarm setpoint shown on the Alarm/
Shutdown Setpoints Screen. This check is bypassed
during shutdown until the start sequence is initiated.
The message will automatically clear when the input
signal decreases to 0.1 Mil below the Alarm Setpoint.
“ Warning – Turbine Condensate Drain Tank
High Level”
The condensate level in the turbine condensate drain
tank has been above the high-level switch actuation
point causing the input to the York I/O board to be open
for 5 continuous seconds. This message will automati-
cally clear when the level drops below the actuation
point of the switch closing the input to the York I/O
board.
"Warning - Inlet Steam Out Of Range"
The inlet steam temperature has been over 50°F above
the DST - Design Steam Temperature or the inlet steam
pressure has been over 150% of the DSP - Design
Steam Pressure for 15 continuous minutes. These set-
points are shown on the Capacity Controls Setpoints
Screen 2. This check is bypassed until the turbine is
slow rolling or the chiller is in the System Run Mode.
The message is automatically cleared when both con-
ditions have decreased below the above setpoints.
“ Warning – Turbine Inlet Steam High
Pressure”
The input signal from the Turbine Inlet Steam Pressure
Transmitter is above the PSP16-Turbine Inlet Steam
High Pressure setpoint shown on the Alarm/Shutdown
Setpoints Screen. This message will automatically
clear when the inlet steam pressure decreases to 0.1
PSIG below the Turbine Inlet Steam High Pressure
setpoint.
“ Warning – Turbine Exhaust Steam High
Pressure”
The input signal from the Turbine Exhaust Steam Pres-
sure Transmitter has been above the PSP7-Turbine
Exhaust Steam High Pressure setpoint shown on the
Alarm/Shutdown Setpoints Screen for 10 seconds. This
check is bypassed until the chiller is in the System Run
Mode. This message will automatically clear when the
exhaust steam pressure decreases to 0.1 PSIA below
the Turbine Exhaust Steam High Pressure setpoint.