Frick QUANTUM - Control Setup - Compressor Safeties - Discharge Safeties Screen

FRICK QUANTUM CONTROL PANEL
OPERATION
S90-010 O
Page 20
CONTROL SETUP -
COMPRESSOR SAFETIES - ”DISCHARGE SAFETIES” SCREEN
Starting Differential Pressure below - If the Differen-
tial Pressure (the result from subtracting Suction Pres-
sure from Discharge Pressure) is greater than or equal
to this setpoint, when the compressor is starting, a start
inhibit will be applied. This can prevent excessive torque
on the motor at start-up.
If “dual discharge control” has been enabled in Factory
Setup, the following Discharge Pressure setpoints will be
necessary for “High Discharge Pressure Mode 2” in addi-
tion to “High Discharge Pressure Mode 1”:
High Discharge Pressure Stop Load - If the Discharge
Pressure is greater than or equal to this setpoint, the
compressor will be prevented from further loading until
the Discharge Pressure is less than this setpoint. This
setpoint helps avoid forced unloading.
High Discharge Pressure Force Unload - if the Dis-
charge Pressure is greater than or equal to this set-
point, the compressor will be forced to unload until the
Discharge Pressure is less than this setpoint. This set-
point helps avoid the high Discharge Pressure alarm
or shutdown.
High Discharge Pressure Alarm - If the Discharge
Pressure is greater than or equal to this setpoint, for
the alarm time delay, an alarm occurs.
High Discharge Pressure Shutdown - If the Dis-
charge Pressure is greater than or equal to this setpoint, for
the shutdown time delay, the compressor will be shut down.
Alarm Delay - The minimum time in seconds that the
Discharge Pressure is greater than or equal to the high
The following Discharge Temperature setpoints are on this
control setpoint screen:
High Discharge Temperature Stop Load - If the Dis-
charge Temperature is greater than or equal to this
setpoint, the compressor will be prevented from further
loading until the Discharge Temperature is less than
this setpoint. This setpoint helps avoid forced unloading.
High Discharge Temperature Force Unload - If the
Discharge Temperature is greater than or equal to this
setpoint, the compressor will be forced to unload until
the Discharge Temperature is less than this setpoint.
This setpoint helps avoid the high Discharge Tempera-
ture alarm or shutdown.
High Discharge Temperature Alarm - If the Discharge
Temperature is greater than or equal to this setpoint,
for the alarm time delay, an alarm occurs.
High Discharge Temperature Shutdown - If the Dis-
charge Temperature is greater than or equal to this
setpoint, for the shutdown time delay, the compressor
will shut down.
Alarm Delay - The minimum time in seconds that the
Discharge Temperature is greater than or equal to the
high Discharge Temperature alarm setpoint before no-
tification of the alarm.
Shutdown Delay - The minimum time in seconds that
the Discharge Temperature is greater than or equal to
the high Discharge Temperature shutdown before the
compressor will shut down.