Oil Sump Screen; Figure 24 - Oil Sump Screen - York YD Series Operation Manual

FORM 160.69-O1
ISSUE DATE: 9/30/2012
Overview
This screen displays a close-up of the chiller oil sump
with pertinent oil system status, pressures and tem-
peratures. This screen also serves as a gateway to sub-
screens that allow programming of setpoints for the
Variable Speed Oil Pumps for compressor #1 and #2.
Display Only
Oil Heater (LED)
Illuminates when the oil heater output is energized.
System Oil Return Solenoid (LED)
Illuminates when the oil solenoid output is energized.
Oil Sump Temperature
Displays the temperature of the oil in the sump.
Sump Oil Pressure (LOP)
Displays the low side oil pressure measured at the
sump.
Oil Pump 1
Oil Pump Run Output (LED)
Illuminates when compressor #1 Variable Speed Oil
Pump being commanded to run.

FIGURE 24 - OIL SUMP SCREEN

JOHNSON CONTROLS

OIL SUMP SCREEN

Pump Oil Pressure (HOP)
Displays the high side oil pressure measured at the
compressor #1 bearing input.
Oil Pressure
Displays the pressure differential between the Pump
oil pressure (HOP) transducer for compressor #1 and
the common Sump oil pressure (LOP) transducer. If
this compressor is the lead compressor, includes offset
pressure derived from auto-zeroing during the com-
pressor #1 pre-lube. However, if compressor #2 is the
lead compressor, this value includes offset pressure
derived from auto-zeroing during compressor #2 Pre-
lube (refer to auto-zeroing explanation under the Com-
pressor Screen). If either transducer used to calculate
this differential is out of range, the display field will
show XX.X.
Oil Pump Drive Command Frequency
Displays the speed command applied to compressor #1
Variable Speed Oil Pump.
SECTION 2 – OPTIVIEW CONTROL CENTER
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