RXB PLUS ROTARY SCREW COMPRESSOR UNITS
OPERATION
070.101-IOM (JAN 13)
Page 19
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.equi.valent.of.
the.normal.suction.condition.
FIXED SETPOINTS:
Fixed.setpoints.define.the.limits.of.acceptable.compressor.
operation..Fixed.Setpoints.are.factory.determined,.stored.in.
programmed.mem.ory.(PROM),.and.will.remain.in.memory.
if.power.to.the.micro.processor.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,. re.ported. in.
degrees.Fahrenheit,.will.shut.off.the.liquid.refrigerant.sup-
ply.to.the.compressor.if.the.oil.temperature.equals.or.falls.
below.this.set.point.
HI DISCH CUT
. -. The. High. Discharge.Tempera.ture. Cutout,.
reported.in.degrees.Fahrenheit,.will.shut.down.the.compres.sor.
if.the.discharge.temperature.equals.or.exceeds.this.setpoint.
HI DISCH ALARM
.-.The.High.Discharge.Temper.ature.Alarm,.
reported.in.degrees.Fahrenheit,.will.trig.ger.a.prealarm.if.the.
discharge.temperature.equals.or.exceeds.this.setpoint.
SETPOINTS DISPLAY, Fixed, Page 4:
HI OIL TEMP CUTOUT
.-.The.High.Oil.Tempera.ture.Cutout,.
reported.in.degrees.Fahrenheit,.will.shut.down.the.compres-
sor.if.the.oil.temperature.equals.or.ex.ceeds.this.setpoint.
HI OIL TEMP ALARM
..-..The.High.Oil.Tempera.ture.Alarm,.
reported.in.degrees.Fahrenheit,.will.trig.ger.a.prealarm.if.the.
oil.temperature.equals.or.exceeds.this.setpoint.
LOW OIL TEMP CUTOUT
.-.The.Low.Oil.Tempera.ture.Cutout,.
reported.in.degrees.Fahrenheit,.will.shut.down.the.compres.sor.
if.the.oil.temperature.equals.or.falls.below.this.set.point.
LOW OIL TEMP ALARM
..-..The.Low.Oil.Temper.ature.Alarm,.
reported.in.degrees.Fahrenheit,.will.trig.ger.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.pres.sing.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.pres.sing.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.pur.poses.only.