RXB PLUS ROTARY SCREW COMPRESSOR UNITS
OPERATION
070.101-IOM (JAN 13)
Page 34
PRES TART CHECK LIST
All.check.points.in.the.fol.lowing.list.must.be.com.pleted.before.placing.the.compressor.unit.in.operation..Only.when.the.checklist.
is.completed.will.the.unit.be.ready.for.initial.start-up...
CHECKPOINT
.
Ammonia.Units:. Only.refrigerant.grade.Ammonia.as.specified.by.International.Institute.of.Ammonia.Refrigeration
.
.
(IIAR).Bulletin.#.110,.Section.3.3.should.be.used.with.FRICK.equipment.
.
Unit.pressure.test..Close.suction.and.discharge.service.valves,.and.isolation.valve.to.low.pressure.transducer.
.
Introduce.pressure.to.unit.and.check.for.leaks...
CAUTION: Do NOT exceed 80% of relief valve and/or 100% of
the vessel’s design working pressure.
.
Charge.unit.with.proper.amount.and.grade.of.oil..Oil.level.should.be.between.the.two
.
sight.glasses.on.the.oil.separator.
.
Evacuate.unit.and.system.to.29.88”.Hg..vacuum.(1000.microns).to.ensure.that.the.system
.
is.free.of.moisture.and.noncondensable.gases..Additional.information.regarding
.
evacuation.is.detailed.in.the.following.publications:
.
AMMONIA.-.International.Institute.Of.Ammonia.Refrigeration.(IIAR).Bulletin.#.110,.Section.5.4.
.
HALOCARBONS.-. Refrigeration.Service.Engineering.Society.(RSES).Service.Application.Manual,
.
.
Section.83,.Forms.610-57.and.630-46.
.
Confirm.that.all.field.wiring.is.complete.
.
With.coupling.center.removed,.check.for.proper.compressor.motor.rotation..COMPRESSOR
.
ROTATION.IS.CLOCKWISE.WHEN.FACING.COMPRESSOR.SHAFT..Check.for.proper.alignment..OPEN
.
compressor.motor.disconnect..Replace.coupling.center.
.
If.applicable,.check.Full-Time.Oil.Pump.for.correct.rotation..OPEN.oil.pump.motor.disconnect.
.
Confirm.that.motor.overload.and.CT.is.properly.sized.
.
With.ALL.motor.disconnects.OPEN,.turn.control.power.ON.and.check.ALL.voltages.
.
Check.that.oil.heater.circuit.is.on..
CAUTION: The oil heater should be on 24 hours
before initial start-up is attempted.
.
Confirm.that.the.Emergency.Stop.Button.is.not.depressed..Disengage.by.gently.twisting.to.the.left.
.
Confirm.Microprocessor.function..Rotate.through.displays.
.
Rotate.to.the.ADJUSTABLE.setpoints.display.(2.pages).and.enter.setpoints.including.DAY,.DATE,.and.TIME.
.
Return.to.the.Operating.display,.then.rotate.back.to.the.ADJUSTABLE.setpoints.display.to.confirm.that.the
.
proper.setpoints.have.registered..Press.[F1].to.return.to.the.Operating.display.
.
Rotate.to.the.ANNUNCIATOR.display..Confirm.that.all.setpoints.are.normal.and.that.no
.
alarm.or.cutout.indications.are.present..Press.[F1].to.return.to.the.Operating.display.
.
Open.all.oil.circuit.service.valves.to.allow.normal.oil.flow.
.
If.applicable,.start.the.oil.pump.by.turning.the.oil.pump.switch.to.HAND..Confirm.oil
.
pressure.buildup.pump.rotation..Separator.oil.level.may.drop.as.oil.filter(s).and.oil
.
cooler.fills.up..Add.oil.as.required..Allow.oil.pump.to.operate.10.minutes.to.flush.the
.
lubricating.circuit..Shut.down.oil.pump..Place.the.oil.pump.switch.in.the.AUTO.mode.
.
Open.discharge.and.suction.service.valves.
.
Open.the.oil.return.needle.valve.located.at.the.bottom.of.the.coalescer.section.of.the.oil.separator.............................................................................
.
Open.all.hydraulic.control.valves.for.the.slide.valve.(compressor.loading.and.unloading)
.
and.the.slide.stop.(volumizer).
.
Open.all.required.oil.cooling.valves...LIQUID.INJECTION:..service.valves.should.be.fully
.
open.with.the.exception.of.the.bleed.valve.which.should.be.opened.1/4.turn..WATER-COOLED
.
OIL.COOLER:.confirm.adequate.water.supply.is.present.and.adjust.water-regulating.valve.to.midrange.
.
Close.economizer.service.valves,.if.applicable..The.economizer.can.be.put.into.service
.
once.normal.operation.is.established.
.
Confirm.that.the.entire.refrigeration.system.is.ready.for.compressor.operation.and.that
.
sufficient.load.is.available.for.compressor.start-up.
.
Close.compressor.motor.main.disconnect.