York YK Style H Operation Manual page 171

The extreme stall condition is not checked under the following conditions:
• While the VGD is in manual control mode.
• While the VGD is fully closed (VGD Limit Switch closed).
• While the Pre-rotation Vanes position is greater than the PRV VGD INHIBIT Setpoint.
Warning – Motor Bearing Lube Suggested
The Operating Hours Since Last Motor Lubrication has exceeded set hours minus 200. This will
be displayed until manually cleared by the Operator or the Operating Hours Since Last Motor
Lubrication exceed the set 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.
See the Motor lubrication screen
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 the set 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 the set hours plus 200,
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.
See the Motor lubrication screen
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.
Model YK Style H Centrifugal Liquid Chillers with OptiView Control Center
for entry instructions. The date and time of this entry is
for entry instructions. The date and time of this entry is
171