Name: NuAire Labgard NU-430-400
Brand: NuAire
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OM0228 Page87of99

February/2014

ReadInputs

Readinputsallaservicetechniciantoexerciseorchecktheseinputfunctions.Theinputsmaybecheckedby

alteringthestateoftheinputfunction(i.e.slidingwindowposition)andmonitoringthechangeonthedisplay.

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8.3 AirflowSensorPerformance

Verification

Theindividualairflowsensorscanberoutinelycheckedduringcalibration orindiagnosticstoassuretheyarereadingand

activewithintherangeofuse(0to200fpm)(0to1.02mps).Theairflowsensorscanalsobecheckedintherunmode

throughperformanceverification,forresponsivenesstochangingairflowconditions.

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8.3.1 RunMode

Tochecktheairflowsensorinrunmode,firstallowthecabinettooperatenormallyforaminimumof5minutes.

Then,placearolledpieceofpaperoverthedownflowsensorintheworkzoneand leavethepaperonthesensor

foratleast2minutesandthenremove.Thisactionwillcausethecabinettogointoadownflowalarmcondition.

Theexhaustairflowreadingshouldincreaseduringthistest.However,thedownflowreadingshouldgodown

below25fpm(.13m/

s).Thereshouldalsobeanoticeableincreaseinmotor/blowernoise.Itwouldalsobe

recommendedtomonitormotor/

blowervoltageduringthetest.Themotor/blowervoltageshouldbemonitored

fromwhenthecabinetisrunningnormally.Duringthetest,whenthedownflowsensoriscovered,the

motor/blowervoltageshouldbesteadilyincreasing toslightlyunderlinevoltage.Whenthedownflowsensoris

uncovered,themotor/

blowervoltageshoulddecreaseandairflowreadingsshouldbewithinthecalibrationrange.

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Ifthemotor/blowervoltagedoesnotchange,anairflowsensorproblemcouldexist.

PleaseconsultwithNuAireTechnicalService.

xx:xx

xx/xx/xx

KEYPAD X = 0, Y = 0

DOWNFLOW SENSOR 60 FPM

EXHAUST SENSOR 1100 CFM

REMOTE OVERRIDE OPEN

NIGHT SETBACK OPEN

WINDOW POSITION NORMAL

PRESSURE SENSOR ACTIVE

AC LINE HZ 60 HZ

AC LINE VOLTS 115 VAC

MOTOR RPM 1000 RPM

MEN

xx:xx

xx/xx/xx

WINDOW HIGH LIMIT CLEAR

WINDOW HIGH CLEAR

WINDOW CLOSED CLEAR

WINDOW SAFE TRIPPED

Brand	NuAire
Model	Labgard NU-430-400
Category	Air Conditioner
Language	English

NuAire Labgard NU-430-400 User Manual

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NuAire Labgard NU-430-400 Specifications

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