Oil Sump Screen; Figure 13 - Oil Sump Screen - York YST Operation Manual

FORM 160.67-O1
ISSUE DATE: 4/1/2015
noTe: OptiView Control Center Screens shown may NOT represent the exact screens according to the software version utilized.
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figure 13 - oil SuMp SCreen

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This screen displays a close-up of the chiller oil sump
and provides all the necessary setpoints for maintain-
ing the Variable Speed Oil Pump (VSOP). In addition,
this screen allows manual control of the frequency
command sent to the VSOP.
diSplaY onlY
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.
pump oil pressure (hop)
Displays the high side Oil Pressure measured at the
compressor bearing input.
oil pressure
Displays the pressure differential between the high side
oil pressure transducer (output of oil filter) and the low
side oil pressure transducer (compressor housing). The
displayed value includes offset pressure derived from
auto-zeroing during the system prelube. (Refer to expla-
nation of auto-zeroing under the Compressor screen). If
either of the transducers used to calculate this differen-
tial is out of range, the display field will show XX.X.
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION

oil SuMp SCreen

oil pump run output (led)
Indicates whether the Oil Pump is being commanded
to operate.
oil return Solenoid (led)
Indicates whether the solenoid is energized.
oil heater output (led)
Indicates whether the oil heater output is energized.
oil Seal lubrication Time remaining
Access Level Required: SERVICE
If a seal lubrication is in progress, this will display the
amount of time remaining in the lubrication process.
next oil Seal lubrication
Access Level Required: SERVICE
This display will show the time remaining until the
next seal lubrication when this function is enabled.
Target / Setpoint oil pressure (variable Speed
oil pump only)
The Variable Speed Oil Pump (VSOP), if installed, operates
to control to a defined Oil Pressure value. During prelube,
and for the first 15 seconds after prelube, this setpoint value
is 45.0 PSID. During this time, this field will display the tar-
get value. After 15 seconds, this value will display the user-
programmed setpoint Oil Pressure.
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