BIRD BA-300 Series User manual

Blower Assembly
Models BA-300 & BA-310
Operation Manual
© Copyright 2016 by Bird Technologies, Inc.
Instruction Book Part Number 920-BA-300/310 Rev. G
Termaline®and Tenuline®are Registered Trademarks
of Bird Electronic Corporation

i
Safety Precautions
Thefollowingaregeneralsafetyprecautionsthatarenotnecessarilyrelatedtoanyspecificpartorprocedure,and
donotnecessarilyappearelsewhereinthispublication.Theseprecautionsmustbethoroughlyunderstoodand
applytoallphasesofoperationandmaintenance.
WARNING
KeepAwayFromLiveCircuits
OperatingPersonnelmustatalltimesobservegeneralsafetyprecautions.Donotreplace
componentsormakeadjustmentstotheinsideofthetestequipmentwiththehighvoltage
supplyturnedon.Toavoidcasualties,alwaysremovepower.
WARNING
ShockHazard
DonotattempttoremovetheRFtransmissionlinewhileRFpowerispresent.
WARNING
DoNotServiceOrAdjustAlone
Undernocircumstancesshouldanypersonreachintoanenclosureforthepurposeof
serviceoradjustmentofequipmentexceptinthepresenceofsomeonewhoiscapableof
renderingaid.
WARNING
SafetyEarthGround
Anuninterruptibleearthsafetygroundmustbesuppliedfromthemainpowersourceto
testinstruments.Groundingoneconductorofatwoconductorpowercableisnot
sufficientprotection.Seriousinjuryordeathcanoccurifthisgroundingisnotproperly
supplied.
WARNING
Resuscitation
Personnelworkingwithornearhighvoltagesshouldbefamiliarwithmodernmethodsof
resuscitation.
WARNING
RemovePower
Observegeneralsafetyprecautions.Donotopentheinstrumentwiththepowerapplied.

SafetyPrecautions
ii
Safety Symbols
Note: Callsattentiontosupplementalinformation.
WARNING
Warningnotescallattentiontoaprocedurewhich,ifnotcorrectlyperformed,couldresult
inpersonalinjury.
CAUTION
Cautionnotescallattentiontoaprocedurewhich,ifnotcorrectlyperformed,couldresult
indamagetotheinstrument.
Thecautionsymbolappearsontheequipmentindicatingthereis
importantinformationintheinstructionmanualregardingthatparticular
area.
Thissymbolindicatesthatashockhazardexistsiftheprecautionsinthe
instructionmanualarenotfollowed.

BlowerAssembly
iii
Warning Statements
Thefollowingsafetywarningsappearinthetextwherethereisdangertooperatingandmaintenancepersonneland
arerepeatedhereforemphasis.
Seepage3
Seepages3,5,8,9,and10
Seepages6and8
Seepages5and9
Seepage5
WARNING
Theventplugmustbeusedatalltimeswhentheloadis
operatingorcooling.Failuretodosocouldresultinan
explosionorsevereburns.
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.
WARNING
NeverattempttoconnectordisconnectRFequipmentfromthetransmissionlinewhileRF
powerisbeingapplied.
LeakingRFenergyisapotentialhealthhazard.
WARNING
Donotoperatewithsidepanelremoved.
WARNING
TurnoffacpowerandRFpowerwhenattachingthepowercable.

SafetyPrecautions
iv
Caution Statements
Thefollowingequipmentcautionsappearinthetextwhenevertheequipmentisindangerofdamageandare
repeatedhereforemphasis.
Seepage3
Seepage4
Seepage5
Seepage6
CAUTION
TheBAsystemisdesignedforoperationinahorizontalpositiononly,withtheload’svent
plugup.Donotuseinanyothermanner.
CAUTION
Ifinstalled,connectoptionalinterlockbeforeapplyingRFpower.
CAUTION
Checkthelocalelectricalcodeforproperachookuppriorto
operationoftheunit.Makesuretheneutralorreturnhookup
isonlyusedforthatpurpose.
CAUTION
TheBirdBA–300/310BlowerAssemblywillderateaload’sspecifiedpowerby50%when
installedandnotrunning.Iftheindicatorlightshouldturnoff,immediatelyreduceRF
powerbyatleast75%.

BlowerAssembly
v
Safety Statements
USAGE
ANY USE OF THIS INSTRUMENT IN A MANNER NOT SPECIFIED BY THE MANUFACTURER MAY
IMPAIR THE INSTRUMENT’S SAFETY PROTECTION.
USO
EL USO DE ESTE INSTRUMENTO DE MANERA NO ESPECIFICADA POR EL FABRICANTE, PUEDE
ANULAR LA PROTECCIÓN DE SEGURIDAD DEL INSTRUMENTO.
BENUTZUNG
WIRD DAS GERÄT AUF ANDERE WEISE VERWENDET ALS VOM HERSTELLER BESCHRIEBEN,
KANN DIE GERÄTESICHERHEIT BEEINTRÄCHTIGT WERDEN.
UTILISATION
TOUTE UTILISATION DE CET INSTRUMENT QUI N’EST PAS EXPLICITEMENT PRÉVUE PAR LE
FABRICANT PEUT ENDOMMAGER LE DISPOSITIF DE PROTECTION DE L’INSTRUMENT.
IMPIEGO
QUALORA QUESTO STRUMENTO VENISSE UTILIZZATO IN MODO DIVERSO DA COME
SPECIFICATO DAL PRODUTTORE LA PROZIONE DI SICUREZZA POTREBBE VENIRNE
COMPROMESSA.

SafetyPrecautions
vi
SERVICE
SERVICING INSTRUCTIONS ARE FOR USE BY SERVICE - TRAINED PERSONNEL ONLY. TO AVOID
DANGEROUS ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING UNLESS QUALIFIED TO DO
SO.
SERVICIO
LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO DEL PERSONAL DE SERVICIO
CAPACITADO. PARA EVITAR EL PELIGRO DE DESCARGÉAS ELCTRICAS, NO REALICE NINGÚN
SERVICIO A MENOS QUE ESTÉ CAPACITADO PARA HACERIO.
WARTUNG
ANWEISUNGEN FÜR DIE WARTUNG DES GERÄTES GELTEN NUR FÜR GESCHULTES
FACHPERSONAL.
ZUR VERMEIDUNG GEFÄHRLICHE, ELEKTRISCHE SCHOCKS, SIND WARTUNGSARBEITEN
AUSSCHLIEßLICH VON QUALIFIZIERTEM SERVICEPERSONAL DURCHZUFÜHREN.
ENTRENTIEN
L’EMPLOI DES INSTRUCTIONS D’ENTRETIEN DOIT ÊTRE RÉSERVÉ AU PERSONNEL FORMÉ AUX
OPÉRATIONS D’ENTRETIEN. POUR PRÉVENIR UN CHOC ÉLECTRIQUE DANGEREUX, NE PAS
EFFECTUER D’ENTRETIEN SI L’ON N’A PAS ÉTÉ QUALIFIÉ POUR CE FAIRE.
ASSISTENZA TECNICA
LE ISTRUZIONI RELATIVE ALL’ASSISTENZA SONO PREVISTE ESCLUSIVAMENTE PER IL
PERSONALE OPPORTUNAMENTE ADDESTRATO. PER EVITARE PERICOLOSE SCOSSE
ELETTRICHE NON EFFETTUARRE ALCUNA RIPARAZIONE A MENO CHE QUALIFICATI A FARLA.

BlowerAssembly
vii
About This Manual
Thisinstructionbookcoversthefollowingmodels:
Changes to this Manual
Wehavemadeeveryefforttoensurethismanualisaccurate.Ifyoudiscoveranyerrors,orifyouhavesuggestions
forimprovingthismanual,pleasesendyourcommentstoourSolon,Ohiofactory.Thismanualmaybeperiodically
updated.Wheninquiringaboutupdatestothismanualrefertothepartnumberandrevisiononthetitlepage.
Chapter Layout
Introduction — Describesthefeaturesoftheblower,listsequipmentsuppliedandoptionalequipment.
Theory of Operation — Describestheblower.
Installation — Providesmountingandinstallationinstructionsfortheblowerassembly.andinstructions
Operating Instructions — Describestheunitcontrolsandprovidespower‐upinstructions.
Maintenance — Listsroutinemaintenancetasksaswellastroubleshootingforcommonproblems.Specifications
andpartsinformationarealsoincluded.
BA–300–115 BA–310–115
BA–300–230 BA–310–230

viii
Table of Contents
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i
SafetySymbols................................................................................ii
WarningStatements...........................................................................iii
CautionStatements............................................................................iv
SafetyStatements..............................................................................v
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
ChangestothisManual........................................................................vii
ChapterLayout...............................................................................vii
Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ItemsFurnished...............................................................................1
ItemsRequiredbutNotSupplied.................................................................1
OptionalAccessories...........................................................................1
Chapter 2 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PowerRatingReduction.........................................................................2
Chapter 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
UnpackingandInspection.......................................................................3
Mounting.....................................................................................3
InstallingThermoswitch(BA–310Only)............................................................3
ThermoswitchConnection(BA–310Only)..........................................................4
LoadResistor..................................................................................5
ACPowerHookup..............................................................................5
Chapter 4 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
BA–300Controls..............................................................................6
BA–310Controls..............................................................................6
NormalOperation..............................................................................6
OperationUnderAbnormalConditions............................................................6
Shutdown....................................................................................6
EmergencyShutdown..........................................................................7
Chapter 5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Troubleshooting...............................................................................8
Maintenance..................................................................................8
Cleaning...................................................................................8
Inspection.................................................................................9
Repair........................................................................................9
Fuse......................................................................................9
IndicatorLight.............................................................................10
Fan......................................................................................10
StorageandShipment.........................................................................11
CustomerService.............................................................................11
Specifications................................................................................12
ReplacementParts............................................................................12
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1
Chapter 1 Introduction
BirdBlowerAssembliessupplyforcedaircoolingtoBirdLoads,includingTerm aline8890Seriesterminationsand
Tenuline8329Seriesattenuators.
TheBirdBA–300consistsoftwohighefficiencyfans,withverticalsidebafflestodirectairovertheload’sradiator
fins.TheblowerdoublesthenormalRFinputratingoftheinstalledload,e.g.a2.5kWloadcandissipate5kW.
TheBirdBA–310isidenticaltotheBA–300exceptthatithasathermoswitchwiredinparallelwiththepower
switch.Whenaloadequippedwithafan‐controlthermoswitchisproperlyconnected,theblowerwillautomatically
turnoninresponsetoariseinloadtemperature.Thissystemprovidesautomaticoperationsuitableforrejectload
service.
Items Furnished
BlowerAssembly
Detachable3‐wirepowercable(withoutmaleplugfor230VACpowercable)
Nutsandscrews
Loadresistormountedinplace(whenorderedwithaload)
Instructionmanual(whenorderedwithoutaload)
Items Required but Not Supplied
Maleplugforthepowercable(230VAConly)
Optional Accessories
Controlthermoswitch(BA–310only)
Figure 1 Outline Drawing

2
Chapter 2 Theory of Operation
LoadsconvertRFenergyintoheat.Thisheatmustbequicklytransferredtothesurroundingenvironmenttoprevent
damagetotheload.Thecoolantfluidsurroundingtheresistortransportstheheattotheradiatorwallsby
convection.There,airpassingovertheradiatorfinscarriestheheataway.
WhenaloadorattenuatorismountedontheBirdBlowerAssembly,bafflescovertheradiatorfinssothatthehigh
airflowgeneratedbytwoblowerfansisconfinedtopassingoverthefins.UptotwiceasmuchRFenergycanbe
dissipatedbythisforceddraftairflowascomparedtonormalconvectionaircurrents.Thus,a2.5kWloadwillsafely
dissipate5kWusingtheBirdBA–300/310.
Power Rating Reduction
Thebafflesinterferewiththefreeflowofnormalaircurrents,causinga50%reductioninheattransferefficiencyif
theforcedairflowisstopped.Thus,a2.5kWloadwillhaveitsmaximumpowerdissipationreducedto1.25kW.

3
Chapter 3 Installation
Thischapterprovidesinformationforon‐siterequirements,unpacking,inspection,andpreparingtheunitforuse.
Unpacking and Inspection
1. Carefullyinspectshippingcontainerforsignsofdamage.
Iftheshippingcontainerisdamaged,donotunpacktheunit.Immediatelynotifytheshippingcarrierand
BirdTec hnologies .
Iftheshippingcontainerisnotdamaged,unpacktheunit.Saveshippingmaterialsforrepackaging.
2. Inspectunitforvisualsignsofdamage.
Note: Ifthereisdamage,immediatelynotifytheshippingcarrierandBirdTechnologies.
Mounting
PlacetheBlowerAssemblyinadry,dustandvibrationfreeenviron‐ment.Donotuseoutdoorsorinareasof
condensinghumidity.Allowatleast3"(7.6cm)ofclearanceaboveandonallsidesoftheunit.
BirdBlowerAssembliesareequippedforeitherportableuseorfixedinstallation.Themountingbracketsonthe
frontandrearfaceshavefourmountingslotsarrangedina412"x20
2332"rectangle(114.3x526.3mm).Usea
screwwitha38"(9.53mm)diametermax.
Installing Thermoswitch (BA–310 Only)
TheBirdBA–310requiresacontrolthermoswitch,P/N2450‐085,forautomaticoperation.Itisnormallyopen,
closingat155°C(311°F),witharatingof10A@120Vacand5A@230Vac.
Toinstallthethermoswitchontheload,proceedasfollows:
1. Replacetheventplugintheloadwiththeshippingplug.
2. Standtheloadonitsbackwiththeconnectorendup.Inthispositionthereisnodangerofthecoolantpouring
outthroughthesocketplughole.
3. Removethetopsocketplugusinga916"hexwrench.
4. Replacetheplugwiththethermoswitch.Sparinglyapplypipesealingcompoundtotheexternalthreads,only,
ofthethermoswitch.Donotcontaminatethecoolantwithpipesealant.
5. Checkforcoolantleaksuponcompletion.
CAUTION
TheBAsystemisdesignedforoperationinahorizontalpositiononly,withtheload’s
ventplugup.Donotuseinanyothermanner.
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.
WARNING
Theventplugmustbeusedatalltimeswhentheloadis
operatingorcooling.Failuretodosocouldresultinan
explosionorsevereburns.

Installation
4
Thermoswitch Connection (BA–310 Only)
ConnectthethermoswitchtotheBirdBA–310asfollows:
Note: Ifyourunithasaconnectoralreadyattachedtothethermoswitchcable,youdonotneedto
performStep1throughStep4.
1. Unscrewthelargeknurledring‐nut(A)atthelowerendofthecouplingjackassembly(See Figure2 below).Pull
itoffthethermoswitchjack(B).Unscrewthesmallknurledcoverfittingfromthebaseplug(D)oftheconnector
toreleasethebase.
2. Threadthecontrolswitchwiresthroughtheclamp(E)withthewashers(F)insideandwithitsthreadedfittingin
place.Servicethecontrolswitchwirewithshorttipsandputspaghettisleevesoverthewireendsifnecessary.
3. Securelysolderthecontrolswitchleadstothelugs(G)oftheconnectorbase.
Note: Thering‐nut(A)mustbeinplaceoverthebaseplug(D)withtheknurledendfacingout.
4. Screwonthecoverring,thenfastenthecableclamp(E)inplaceandtightenbothyokescrews(H).
5. Puttheplugbackonthethermoswitchandtightenthenut(A).
Figure 2 Thermoswitch Assembly
CAUTION
Ifinstalled,connectoptionalinterlockbeforeapplyingRFpower.

BlowerAssembly
5
Load Resistor
ToconnecttheBlowerAssemblytoaload,followtheseinstructions:
Removeoneoftheverticalpanelsbyunscrewingboth10‐32trussheadscrews.
Placetheloadontheblowerassemblyagainsttheremainingverticalpanel.BesurethattheRFinput
connectorfacesthesamedirectionastheblowercontrolpanel.
Lineupthebaseholesandlooselyscrewtheloadandblowertogetherwiththenutsandscrewsprovided.
Remountthesidepanelandlooselyreplacethetrussheadscrews.
Lineuptheholesonthesidepaneltabswiththoseonthefrontandrearfacesoftheload.Securewithfour
10‐32trussheadscrews.
Note: Itmaybenecessarytotemporarilyloosenthetwoscrewsintheunremovedverticalpanel.
Tightenallthesidepanelandbasemountingscrewssecurely.
Pushthepowercable’splugintothesocketattherearoftheblower,thenlockitinplacewiththeclamp.
AC Power Hookup
Theacpowersupplyrequiredis115/230VAC,dependingonthemodel,@50/60Hz,1.Theblowerisequippedwith
anIEC320“cold”(65°C)acinlet.
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.
WARNING
Donotoperatewithsidepanelremoved.
CAUTION
Checkthelocalelectricalcodeforproperachookuppriortooperationoftheunit.
Makesuretheneutralorreturnhookupisonlyusedforthatpurpose.
WARNING
TurnoffacpowerandRFpowerwhenattachingthepowercable.

6
Chapter 4 Operating Instructions
AllBirdBlowerAssembliesareequippedwithacontrolswitchandaindicatorlight.Noinitialadjustmentsare
required.
BA–300 Controls
OntheBirdBA–300,theswitchislabeled“ON/OFF”.WhentheswitchissettoON,theindicatorlightwillturnon
andthefanswillruncontinuously.WhensettoOFF,theindicatorlightwillturnoffandthefanswillnotrun.
BA–310 Controls
OntheBirdBA–310,theswitchislabeled“MANUAL/AUTOMATIC”.WhentheswitchissettoMANUAL,thefanswill
runcontinuously.WhensettoAUTOMATIC,thefanswillbeturnedonwhenthecoolantreachesapreset
temperature.Theindicatorlightwillturnonwhenevertheunitisconnectedtoacpower.
Normal Operation
Turnthebloweron.Checkthattheindicatorlightison.
SettheBirdBA–310toMANUALmomentarilytocheckthatthefansareworkingproperly.
ApplyRFpower.
Operation Under Abnormal Conditions
Iftheindicatorlightturnsofforthefansstopunexpectedly,immediatelyturnofftheRFpowerorreduceitbyat
least75%(halfoftheload’soriginalpowerrating).Referto
"Troubleshooting"onpage8 tocorrecttheproblem.
Theloadcanbesubjectedtohigherpowerlevelsforshortintervals;refertotheloadmanualfordetails.
Shutdown
TurnoffRFpoweratthesource.
Waitapproximately15minutes,orfortheBA–310fanstostoprunning.Thiswillallowtheloadtocool
withoutcausingheatstress.
Turnofftheblower.
CAUTION
TheBirdBA–300/310BlowerAssemblywillderateaload’sspecifiedpowerby50%
wheninstalledandnotrunning.Iftheindicatorlightshouldturnoff,immediately
reduceRFpowerbyatleast75%.
WARNING
NeverattempttoconnectordisconnectRFequipmentfromthetransmissionline
whileRFpowerisbeingapplied.
LeakingRFenergyisapotentialhealthhazard.

BlowerAssembly
7
Emergency Shutdown
TurnoffRFpoweratthesource.
Iftheloadisequippedwithaninterlockthermoswitch,RFpowerwillbeautomaticallyturnedoffwhenthecoolant
temperaturereachesanunsafelevel.Useofaninterlockthermoswitchisespeciallyrecommendedwhenusingthe
blowerassembly.

8
Chapter 5 Maintenance
Thischaptercoverscleaning,inspection,troubleshooting,andspecificationsfortheBirdBA–300/310Blower
Assemblies.
Troubleshooting
Forcorrectionsrequiringrepairorreplacementofcomponentsseetheappropriatesection.Onlythosefunctions
withinthescopeofnormalmaintenancearelisted.Thismanualcannotlistallmalfunctionsthatmayoccur,or
correctiveactions.Ifaproblemisnotlistedorisnotcorrectedbythelistedactions,notifyaqualifiedservicecenter.
Maintenance
Cleaning
Theintakegrills,fan,andinsidesurfaceofthebafflesshouldbewipedfreeofdustanddirtwhennecessarywitha
cleansoftcloth.Excessivedustwillinterferewiththeefficientdissipationofheat.IftheBA–300/310hasbeen
standingwithoutaninstalledload,checkforobjectsthatmayhaveenteredthebloweropenings.
Whenaloadisinstalledontheblowerassembly,itwillbenecessarytopartiallydisassembletheblowertocleanthe
load’sradiatorfins.Followtheinstructionsbelow:
WARNING
NeverattempttoconnectordisconnectRFequipmentfromthetransmissionline
whileRFpowerisbeingapplied.
LeakingRFenergyisapotentialhealthhazard.
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.
Problem Possible Cause Possible Correction
Noairflowfromblowers;
indicatorlightoff
Unpluggedpowercable Connectthepowercable
Fuseburnout Replacefuseaftercheckingandcorrectingthe
burnoutcause.(See
"Fuse"onpage9 )
Noacpower Makesureacpowerisproperlyconnectedand
turnedon
Noairflowfromblowers;
indicatorlighton
Fanobstructedbybentgrill Straightenthegrill
Fanmotorsoverheated Cleanthegrillandfanblades(See
"Cleaning"on
page8 )
Fanmotorsburntout Replacethefanmotors(See
"Fan"onpage10 )
Airflowfromblowers;
indicatorlightoff Lampburntout Replacethelamp(See
"IndicatorLight"onpage
10 )

BlowerAssembly
9
Removeoneofthesidebafflesbyunscrewingboth10‐32trussheadscrews.
Cleantheload.
Screwthebafflebackintoplace.
Inspection
Theonlyregularinspectionrequiredistocheckfortheaccumulationofdustinlocationsthatmightimpedethefree
flowofair,i.e.,intakegrillandfanblades.Iftheblowerassemblyisattachedtoaload,cleantheradiatorfins
regularly.
Repair
Fuse
ThefuseislocatedintheACmoduleonthebackoftheblower.
Toreplacethefuse:
Correctthefuseburnoutcause.
Note: Commoncausesincludestuckorblockedfansorashortcircuitinthemotororblowerwiring.
Pressthelockingtabonthefusedrawerandremovethedrawer.
Replacethefuse.See "Specifications"onpage12 forfusetypeandcurrentrating.
PushthedrawerintotheACmoduleuntilitlocksintoplace.
Ifthefansstilldonotrunorifthefuseburnsoutagain,returntheblowerassemblytothefactory.
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.
WARNING
Donotoperatewithsidepanelremoved.
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.

Maintenance
10
Indicator Light
1. Removethefour8‐32panheadscrewsfromthefrontandbackofthebaseframe.
2. Pullthefanguardstraightoffthebottom.
3. Removethequickdisconnectsonthelightandunscrewtheretainingsleeve.
4. Removethelightunit.
5. Removethelenswhilepressingbothlockingtabs.
6. Pressthehousing’scenterslotwithasmallscrewdrivertoreleasethelamp.
7. Pushthenewlampintothehousinguntilitsnapsintoplace.
8. Replacethelens,thenputthelightunitbackinplace.
9. Replacethefanguardandscrewinthe8‐32panheadscrews.
Fan
Toreplaceafanassembly:
1. Removethefour8‐32panheadscrewsfromthefrontandbackofthebaseframe.
2. Pullthefanguardstraightoffthebottom.
3. Carefullyunsolderthecolorcodedconnectingwires.Notetheconnectionsforresoldering.
4. Removethefourfanmountingscrewsandremovethedefectivefan.Becarefulnottolosethelippedretaining
washers.
5. Insertthereplacementfanwiththefanbladeassemblyfacingdown,towardsthefanguardgrill.
6. Insertthemountingscrewsandretainingwashersintothemountingholes.Turnthewasherssothatthelipped
portionfitsovertherimofthefanframe.Tightenthescrews.
Note: Ifthefanreplacedistheoneclosesttothepowersocket,reattachthegreengroundwiretothe
closestmountingscrew.
7. Soldertheconnectingwirestothesolderlugsonthemotorunitaccordingtothecolorcoding.
8. Replacethefanguardandscrews.
Note: Beforereattachingtheblowerassemblytotheload,checkthefansforfreeandunimpeded
movementoftheblades.
9. Connecttheunittoacpower.SettheswitchtoMANUALorONmomentarilytocheckthatthefanswork
properly.
Figure 3 BA-300 Schematic
L1
L2
L1
L2
ROTATION
FANS
N L
GRN/YEL
AC
RECEPTACLE
WHT/YEL
TOGGLE
SWITCH WHT/BLK
WHT/BLK
INDICATOR
LIGHT WHT/BLK
WARNING
Disconnecttheunitfromallpowersourcesbeforeservicing.
Theunitmaybeenergizedfrommultiplesources.
Thepotentialforelectricshockexists.

11
Figure 4 BA-310 Schematic
N L
L1
L2
L1
L2
ROTATION
FANS
GRN/YEL
AC
RECEPTACLE
WHT/YEL
TO CONTROL
THERMOSWITCH
BLACK RED
TOGGLE
SWITCH WHT/BLK
WHT/BLK
INDICATOR
LIGHT WHT/BLK
Storage and Shipment
CovertheBirdBA–300/310beforestoringtokeepoutdustanddirt.Storeinadry,dust‐freeenvironmentwherethe
ambienttemperaturewillremainbetween–40and+45°C(–40to+113°F).
Toshiptheblowerassembly,takethefollowingprecautions:
Detachthepowercableandtapeitsecurelytothehousing.
Toshiptheblowerassemblybyitself,packitinasturdycorrugatedpapershippingcarton.Ifitisattachedto
aload,awoodcrateisrecommendedbecauseofsizeandweight.
Customer Service
Anymaintenanceorserviceprocedurebeyondthescopeofthoseinthischaptershouldbereferredtoaqualified
servicecenter.
Iftheunitneedstobereturnedforanyreason,requestanReturnMaterialAuthorization(RMA)throughtheBird
Technologieswebsite.AllinstrumentsreturnedmustbeshippedprepaidandtotheattentionoftheRMAnumber.
Bird Service Center
30303AuroraRoad
Cleveland(Solon),Ohio44139‐2794
Fax:(440)248‐5426
E‐mail:[e-mail]
ForthelocationoftheSalesOfficenearestyou,visitourWebsiteat:
http://www.birdrf.com