York YK-EP Operation And Maintenance Manual page 81

Table 69: Programmable
Button Access level
Standby Lube
(Enabled / Service
Disabled)
Economizer
Service
Oil Pump
Pressure
Service
Setpoint
Control
Period
(Variable Service
Speed Oil
Pump Only)
Variable
Speed Oil
Service
Pump Speed
Control: Set
Raise Service
Lower Service
Set Service
Auto Service
Manual
Operator
Pump
Table 70: Navigation
Button Access level
Home View
YK-EP Style B Centrifugal Chiller
Description
Allows the user to enable or disable the standby lube operation.
When enabled, this function causes the oil pump to operate for a
period of two (2) minutes at 24 hour intervals from when the oil
pump was last run for at least 2 minutes.
Allows the user to navigate to the Economizer Oil Pump Screen.
(Variable Speed Oil Pump Only) The Variable Speed Oil Pump (VSOP)
operates to control to a defined Oil Pressure value. This key allows
the user to define the setpoint for the VSOP control.
(Variable Speed Oil Pump Only) By default, the automatic VSOP
control algorithm operates every 300 ms. This key allows the user to
specify the control period in multiples of 300 ms.
This key allows the user to specify automatic or a fixed manual
speed at which the VSOP will run.
This key puts the VSOP control into manual mode and increments
the present speed command by 0.5 Hz.
This key puts the VSOP control into manual mode and decrements
the present speed command by 0.5 Hz.
This key allows the user to set the VSOP manual speed between 25
and 60 Hz .
This key returns the VSOP to automatic mode where control is based
on the Oil Pressure Setpoint.
This key puts the oil pump control in manual mode and forces it
to RUN. The oil pump is limited to running for a maximum of ten
(10) minutes. If a longer running time is desired, this key must
be pressed again. Manual Oil Pump control is disabled (and the
button hidden) during System Prelube, System Run, Proximity Probe
Calibration, Seal Lubrication, and System Coastdown.
Description
Returns user to HOME Screen.
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