York YD Mod D, Operation Manual, Page: 73 / 160

Table 58: Display only fields
Field/LED name Description
Oil pump 2: Oil pump run output
(LED)
Illuminates when compressor #2 Variable Speed Oil Pump is being commanded to
run.
Oil pump 2: Pump oil pressure
(HOP)
Displays the high-side oil pressure measured at the compressor #2 bearing input.
Oil pump 2: Oil pressure
Displays the pressure differential between the Pump oil pressure (HOP) transducer
for compressor #2 and the common Sump oil pressure (LOP) transducer. If this
compressor is the lead compressor, includes offset pressure derived from auto-
zeroing during compressor #2 Pre-lube. However, if compressor #1 is the lead
compressor, this value includes offset pressure derived from auto-zeroing during
compressor #1 Pre-lube (refer to auto-zeroing explanation under the Compressor
Screen). If either transducer used to calculate this differential is out of range, the
display field will show XX.X.
Oil pump 2: Oil pump drive
command frequency
Displays the speed command applied to compressor #2 Variable Speed Oil Pump.
Oil pump 2: Setpoint or target oil
pressure
Displays the oil pressure that compressor #2 Variable Speed Oil Pump is controlling
to. During the pre-lube and for the first 15 seconds of System Run, this is the Target
Setpoint and is fixed at 45.0 psid. For the remainder of compressor #2 run, it is the
programmed Setpoint Oil Pressure.
Oil pump 2: Pulldown time
remaining
Displays the time remaining until the user programmed Setpoint Oil Pressure is used.
While this clock is decrementing, the Target Oil Pressure Setpoint (fixed at 45.0 psid) is
in effect.
Oil level (bar graph)
Displays the oil level in the oil sump as a vertical graph. The range of the graph is
0% to 100%. Three colors are used as follows: 0% to 35% - red; >35% to 80% - green;
>80% to 100% - yellow. Only displayed if enabled using the Oil Level Detection (Enable/
Disable) key.
Table 59: Programmable
Button Access level Description
Oil level detection
(enable/disable) Service
Enables or disables the Oil Level Detection feature. When enabled, displays the oil level
in the oil sump as a vertical graph.
Table 60: Navigation
Button Access level Description
Home View Returns to the Home screen.
Oil pump 1 View Displays a subscreen that allows manual control and programming of the setpoints for
compressor #1 Variable Speed Oil Pump.
Oil pump 2 View Displays a subscreen that allows manual control and programming of the setpoints for
compressor #2 Variable Speed Oil Pump.
73 Model YD Mod D with OptiView Control Center