York YK-EP, Operation And Maintenance Manual

Page: 195 / 268

Warning – Motor Bearing Lube Suggested
The Operating Hours Since Last Motor Lubrication has exceeded 1000 hours. This will be displayed
until manually cleared by the Operator or the Operating Hours Since Last Motor Lubrication
exceed 1200 hours, whereupon it is replaced by the message WARNING – MOTOR BEARING LUBE
REQUIRED below. The Operator clears this message by entering his/her initials, name or user ID
in OPERATOR access level (or higher) using the MOTOR LUBE ACKNOWLEDGE key on the MOTOR
LUBRICATION Screen. Refer to the Motor lubrication screen for entry instructions. The date and
time of this entry is automatically logged as the Date Of Last Motor Lubrication and Time Of Last
Motor Lubrication. It also resets the Operating Hours Since Last Lubrication to zero. The date this
warning occurs is stored as the Date Of Last Motor Lubrication Warning Or Fault. This warning
message will not be displayed if the Auto Lube Setpoint on the MOTOR LUBRICATION Screen
enabled.
Warning – Motor Bearing Lube Required
The Operating Hours Since Last Motor Lubrication has exceeded 1200 hours. This replaces
WARNING – MOTOR BEARING LUBE SUGGESTED above. This is displayed until manually cleared by
the Operator or the Operating Hours Since Last Motor Lubrication exceed 1400 hours, whereupon
it is replaced by the message Motor – Lack Of Bearing Lubrication below. The Operator clears this
message by entering his/her initials, name or user ID in OPERATOR access level (or higher) using
the MOTOR LUBE ACKNOWLEDGE key on the MOTOR LUBRICATION Screen. Refer to the Motor
lubrication screen for entry instructions. The date and time of this entry is automatically logged as
the Date Of Last Motor Lubrication and Time Of Last Motor Lubrication. It also resets the Operating
Hours Since Last Lubrication to zero. The date this warning occurs is stored as the Date Of Last
Motor Lubrication Warning Or Fault. This warning message will not be displayed if the Auto Lube
Setpoint on the MOTOR LUBRICATION Screen enabled.
Warning – Motor – High Winding Temperature
This warning occurs when any of the enabled Motor Winding Temperatures exceeds the following:
[High Winding Temperature Shutdown threshold - 18°F] for 3 continuous seconds. This warning
will automatically clear when all winding temperatures decrease below the warning threshold.
The value programmed for the above threshold is displayed as High Winding Temperature
Shutdown on the MOTOR SETPOINTS Screen. It is programmed with the Winding Setup Setpoint
on that screen. This warning not occur when the Winding 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 or any individual winding temperature sensor that has been disabled with the
Temperature Disable Setpoint on the MOTOR SETPOINTS Screen.
Warning – Motor – High Bearing Temperature
This warning occurs when either of the enabled motor bearing temperatures exceeds the
programmed High Bearing Temperature Warning for 3 continuous seconds. This warning will
automatically clear when all bearing temperatures decrease below the warning threshold. The
value programmed for this threshold is displayed as High Bearing Temperature Warning on the
MOTOR SETPOINTS Screen. It is programmed with the Bearing Setup Setpoint on that screen. This
warning 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.
Warning – Motor – Bearing Vibration Baseline Not Set
Displayed until both the Shaft End and Opposite Shaft End motor bearing vibration baseline values
are entered on the MOTOR DETAILS Screen. This can be done either manually with the Manual
Baseline Setpoint or automatically with the AUTO BASELINE key on that screen. While this message
is displayed, the vibration baseline values are set to X.X.
195 YK-EP Style B Centrifugal Chiller