Frick RXB PLUS - Page 19

RXB PLUS ROTARY SCREW COMPRESSOR UNITS S70-101 IOM
Page 19
OPERATION
The High Discharge Pressure Cutout should be set at 90%
of the setting of the lowest high side relief valve. The High
Discharge Pressure Alarm should be set 10 PSIG lower than
the Cutout.
The Capacity Control setpoint should be the equivalent of
the normal suction condition.
FIXED SETPOINTS:
Fixed setpoints define the limits of acceptable compressor
operation. Fixed Setpoints are factory determined, stored in
programmed memory (PROM), and will remain in memory if
power to the microprocessor is interrupted.
SETPOINTS DISPLAY, Page 3:
OIL HEATER - The Oil Heater setpoint, reported in degrees
Fahrenheit, turns on the oil separator heater(s) when the oil
temperature equals or falls below this setpoint whenever the
compressor is NOT running.
LIQ INJ CON - The Liquid Injection Control, reported in de-
grees Fahrenheit, will shut off the liquid refrigerant supply to
the compressor if the oil temperature equals or falls below
this setpoint.
HI DISCH CUT -
The High Discharge Temperature Cutout, re-
ported in degrees Fahrenheit, will shut down the compressor if
the discharge temperature equals or exceeds this setpoint.
HI DISCH ALARM - The High Discharge Temperature Alarm,
reported in degrees Fahrenheit, will trigger a prealarm if the
discharge temperature equals or exceeds this setpoint.
SETPOINTS DISPLAY, Fixed, Page 4:
HI OIL TEMP CUTOUT - The High Oil Temperature Cutout,
reported in degrees Fahrenheit, will shut down the compres-
sor if the oil temperature equals or exceeds this setpoint.
HI OIL TEMP ALARM - The High Oil Temperature Alarm,
reported in degrees Fahrenheit, will trigger a prealarm if the
oil temperature equals or exceeds this setpoint.
LOW OIL TEMP CUTOUT - The Low Oil Temperature Cutout,
reported in degrees Fahrenheit, will shut down the compres-
sor if the oil temperature equals or falls below this setpoint.
LOW OIL TEMP ALARM - The Low Oil Temperature Alarm,
reported in degrees Fahrenheit, will trigger a prealarm if the
oil temperature equals or falls below this setpoint.
LO OIL PRESS CUTOUT - The Low Oil Cutout will shut
down the compressor when the oil pressure equals or falls
below this setpoint.
LO OIL PRESS ALARM - The Low Oil Alarm will trigger a
prealarm when the oil pressure equals or falls below this
setpoint.
When a prealarm or cutout occurs, a flashing ALARM or
CUTOUT indicator will appear in the lower right hand corner
of the Operating display. To determine the fault, rotate to the
Annunciator display by pressing the [CHANGE] key.
The Annunciator display lists all key operative points on nine
sequential displays. These displays can be rotated from page
#1 thru page #9 by pressing the [STEP] key. When a prealarm
or cutout is triggered, the pertinent point will flash and the
time of the occurrence will be recorded to the right of the
alarm.
ANNUNCIATOR DISPLAY *
ANNUNCIATOR: PG-01 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
High Press. Cutout *********************
High Press. Alarm *********************
ANNUNCIATOR: PG-02 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Low Press. Cutout *********************
Low Press. Alarm *********************
ANNUNCIATOR: PG-03 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Oil Press. Cutout *********************
Oil Press. Alarm *********************
ANNUNCIATOR: PG-04 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Hi Oil Temp Cutout *********************
Hi Oil Temp Alarm *********************
ANNUNCIATOR: PG-05 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Low Oil Temp Cutout *********************
Low Oil Temp Alarm *********************
ANNUNCIATOR: PG-06 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Disch. Temp Cutout *********************
Disch. Temp Alarm *********************
ANNUNCIATOR: PG-07 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Comp. Auxiliary *********************
Pump Aux. Not Used *********************
ANNUNCIATOR: PG-08 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Oil Level *********************
Comp. Differential *********************
ANNUNCIATOR: PG-09 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Superheat Cutout *********************
Superheat Alarm *********************
ANNUNCIATOR: PG-10Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Aux. 1 (Alarm) *********************
Aux. 2 (Shutdown) *********************
ANNUNCIATOR: PG-11 Thu 03-01-89 15:33:36
(Use STEP key to advance PAGE)
Low Motor Amps *********************
Sensor Fault *********************
*Displays for illustrative purposes only.
Revised 8/97