York YK Style H Operation Manual page 184

SECTION 3 - DISPLAY MESSAGES
as the count exceeds the limit. If the Extended Run fea-
ture is Enabled, this shutdown occurs only if the count
exceeds the limit at completion of the 10 minute Ex-
tended Run period. The chiller can be started after the
Clear Fault key is pressed on the display.
Motor – Lack of Bearing Lubrication
The Operating Hours Since Last Motor Lubrication has
exceeded 1400 hours. This message replaces WARN-
ING MOTOR BEARING LUBE REQUIRED above.
This safety shutdown remains in effect until the Op-
erator presses the Clear Fault key on the display. and
enters his/her initials, name or user ID in OPERATOR
access level (or higher) using the MOTOR LUBE AC-
KNOWLEDGE key on the MOTOR LUBRICATION
Screen. Refer to the Motor Lubrication Screen on Page
115 for entry instructions. The date and time of this
entry is automatically logged as the Date Of Last Mo-
tor Lubrication and Time Of Last Motor Lubrication.
It also resets the Operating Hours Since Last Lubrica-
tion to zero. The date this warning occurs is stored as
the Date Of Last Motor Lubrication Warning Or Fault.
This message will only be displayed if the Auto Lube
Setpoint is disabled. With this setting, if the Shutdown
Setpoint is enabled, this safety shutdown will occur. If
shutdown is disabled, this warning message will be dis-
played but the safety shutdown will not be performed.
Motor – High Winding Temperature
This safety shutdown occurs when either of the follow-
ing conditions are present:
• Any of the enabled Motor Winding Temperatures
exceeded the programmed High Winding Temper-
ature Shutdown threshold plus the programmed
Winding Hotspot Allowance threshold for 3 con-
tinuous seconds.
-OR-
• The Average Winding Temperature has exceed-
ed the programmed High Winding Temperature
Shutdown threshold for 3 continuous seconds.
The values programmed for the above safety thresh-
olds are displayed as High Winding Temperature Shut-
down and Winding Hotspot Allowance on the MOTOR
SETPOINTS Screen. They are programmed with the
Winding Setup Setpoint on that screen. The chiller can
be started after all winding temperatures decrease to at
least 18°F (10°C) below the shutdown threshold and
the Clear Fault key is pressed on the display. This safe-
ty shutdown will not occur when the Winding Tem-
184
perature Protection Setpoint is set to Disabled on the
MOTOR DETAILS Screen. Also, it will not act on any
RTD input registering as an open RTD or any individ-
ual winding temperature sensor that has been disabled
with the Temperature Disable Setpoint on the MOTOR
SETPOINTS Screen.
Motor – High Bearing Temperature
This safety shutdown occurs when either of the enabled
motor bearing temperatures exceeds the programmed
High Bearing Temperature Shutdown threshold for 3
continuous seconds. The value programmed for this
safety threshold is displayed as High Bearing Temper-
ature Shutdown on the MOTOR SETPOINTS Screen.
It is programmed with the Bearing Setup Setpoint on
that screen. The chiller can be started after both bearing
temperatures decrease to at least 9°F below the shut-
down threshold and the Clear Fault key is pressed on
the display. This safety shutdown will not occur when
the Bearing Temperature Protection Setpoint is set to
Disabled on the MOTOR DETAILS Screen. Also, it
will not act on any RTD input registering as an open
RTD.
Motor – High Bearing Vibration
Either the Shaft End or Opposite Shaft End motor
bearing vibration has exceeded the value programmed
for the High Vibration Shutdown Setpoint for the pro-
grammed number of delay seconds. This safety shut-
down does not occur when the Motor Vibration Pro-
tection Setpoint is set to Disabled on the MOTOR
DETAILS Screen or while the WARNING – MOTOR
– BEARING VIBRATION BASELINE NOT SET
warning is displayed. The chiller can be started after
the both vibration values decrease below the shutdown
threshold and theClear Fault key is pressed on the dis-
play.
Motor – Cooling Coil Leak
The Motor Cooling Coil Leak Detector has registered
a fault condition for at least 3 continuous seconds. The
Motor Cooling Coil leak Protection Setpoint enables
the type of sensor employed: If an optical sensor is be-
ing used, the input to the Motor Monitoring Board goes
high to indicate a leak; if a float switch is used, the
input goes low to indicate a leak. This safety shutdown
will not occur when the Motor Cooling Coil Leak Pro-
tection Setpoint is set to Disabled. The chiller can be
started after the leak sensor no longer indicates a leak
and the Clear Fault key is pressed on the display.
FORM 160.76-O2
issue date: 6/15/2015
JOHNsON CONtROLs