Johnson Controls FRICK QUANTUM LX Operation page 38

090.022-O (MAY 12)
Page 38
greater than or equal to this setpoint, for
the shutdown time delay, the compressor
will shut down.
• [Shutdown Delay] - The minimum
time in seconds that the Oil Tempera-
ture is greater than or equal to the High
Oil Temperature Shutdown setpoint be-
fore the compressor will shut down.
Low Oil Pressure:
• [Warning] - If the Oil Pressure is less than
or equal to this setpoint, for the warning
time delay, a warning occurs.
• [Warning Delay] - The minimum time
in seconds that the Oil Pressure is less
than or equal to the Low Oil Pressure
Warning setpoint before notifi cation of
the warning.
• [Shutdown] - If the Oil Pressure is less than
or equal to this setpoint, for the shutdown
time delay, the compressor will shut down.
• [Shutdown Delay] - The minimum
time in seconds that the Oil Pressure
is less than or equal to the Low Oil
Pressure Shutdown setpoint before the
compressor will shut down.
High Filter Pressure:
• [Warning] - If the Filter Pressure is greater
than or equal to this setpoint, for the warn-
ing time delay, a warning occurs.
• [Warning Delay] - The minimum time
in seconds that the Filter Pressure is
greater than or equal to the High Filter
Pressure Warning setpoint before noti-
fi cation of the warning.
• [Shutdown] - If the Filter Pressure is great-
er than or equal to this setpoint, for the
shutdown time delay, the compressor will
shut down.
• [Shutdown Delay] - The minimum time
in seconds that the Filter Pressure is
greater than or equal to the High Filter
Pressure Shutdown setpoint before the
compressor will shut down.
• [High Level Shutdown Delay] - The time in
seconds to delay after the High Liquid Level
input is energized before the compressor
will shut down.
• [Low Oil Level Delay] - The time that must
elapse before the Low Oil Level Shutdown
can be initiated.
QUANTUM™ LX COMPRESSOR CONTROL PANEL
OPERATION
• [Oil Pump Lube Time Before Starting] -
The amount of time that the compressor
will be delayed from starting to allow the
Oil Pump to properly lube the compressor
components.
• [Dual Pump Transition Time] - If enabled.
The lead pump is the pump selected to be
the fi rst pump to run. If the lead pump has
a pump auxiliary failure, an alarm message
is issued and the other pump will be turned
on. If the compressor has a Low Oil Pres-
sure Warning failure, the second pump will
be turned on; then after a 30 seconds delay,
the lead pump will be turned off. If while the
compressor is running the second pump has
an auxiliary failure or Low Oil Pressure is en-
countered, a shutdown message and action
is issued.
Pull Down:
With this option enabled, the Suction Pressure
can be slowly lowered in steps. Slowly walking
the pressure down prevents rapid drops in sys-
tem pressure that causes violent boiling of re-
frigerant in the system. The following selections
are provided:
• Disabled - The Pull Down feature is ig-
nored.
• Enabled - The Pull Down feature will be
utilized.
• [Capacity Position] - The percentage
of travel that the Slide Valve is permit-
ted to load upon Compressor start-
ing, and thereafter determined by the
Amount of Time setpoint. For example,
if this setpoint is 5%, and the Amount of
Time setpoint is 1 Minute, then the Slide
Valve will be permitted to load 5% of its
stroke every minute, until such time as
the compressor has reached capacity.
It would take 20 minutes for the Slide
Valve to fully load to 100% at this rate.
Once capacity has been achieved, this
function is ignored, until such time as
the compressor is restarted.
• [Amount of Time] - The amount of
time between when the Slide Valve is
permitted to move. See Slide Valve Po-
sition description.
Pump Down:
With this option enabled, Pump Down provides
for pumping down the refrigerant (removal of the
refrigerant gas). For example, this can be used
for removing the refrigerant from a shell and
tube heat exchanger to prevent its standing wa-