Trane Q Fan User manual

Trane
Brand
Trane
Model
Q Fan
Category
Household fans
Type
User manual

This manual is also suitable for

Installation QFNA-IOM-1
ServiceLiterature
AirHandling
Fans
QFanandSuperQIIFan
Installation/Operation/Mainteance
QFNA-IOM-1
August1997
SV-AH-FAN-QFNA-IOM-1-897
FAN-IM-3-975
ModelQFanand
SuperQIIPlus™
X39640481-01
Subject Page
Model Number ............................3-7
General Information ..........................8
Literature Change History ......................8
About this Manual ..........................8
Warnings and Cautions .......................8
Shipping, Rigging and Handling ...................9
Storage ................................9
Installation - Q Fan
......................
10
Provide a Foundation ........................10
Isolate the Fan ...........................10
Arrangement 9: For units size 16-44, Class I and II ......10
Arrangement 9: For units size 49-60, Class I and II ......10
Arrangement 1: For units size 27-44, Class I and II .......10
Arrangements 1 and 9: For units size 16-44 Class III ......10
Clearances .............................10
Installation of Motor and Beltguard When NOT Factory Installed..12
Arrangement 9..........................12
Arrangement 1..........................12
Installation of Drives When Motor NOT Factory Installed......14
Arrangements 1 and 9......................14
Wheel Alignment ..........................15
Arrangements 1 and 9......................15
Q Fan Duct Connections ......................17
Super Q II Duct Connections ....................17
Installation - Super Q II ....................18
Preparation for Mounting ......................18
Ceiling Mounting ..........................18
Floor Mounting ...........................18
Accessories Installation .......................19
Inlet Vanes .............................19
Silencer ...............................19
Start-Up Q Fans and Super Q Fans .................20
Start-Up Procedures ........................20
Determining Fan RPM .......................20
Maintenance ..........................21
Establishing A Schedule ......................21
V-Belt Drive .............................21
Variable Inlet Vanes.........................21
Isolation Base ............................21
Wheel and Housing .........................21
Scheduled Preventive Maintenance Services ...........21
Bearing Service ............................25
About Bearings ...........................25
Sealmaster, SFT, MSF, SF and MSFT Bearings ..........25
Link-Belt P-300 Bearings ......................26
Link Belt Series 6800 Spherical Roller Bearing Pillow Blocks ...27
Troubleshooting............................29
Vibration and Noise .........................30
Other Noise and Vibration Services.................30
HP Too High
............................
30
Overheated Bearing
........................
30
High Temperatures
.........................
30
2 QFNA-IOM-1
Table of Contents
ModelNumberDescription
AnexampleofatypicalservicemodelnumberforaQFanisshownbelow.Thefanmodelnumberislocatedonthe
unitnameplate.Table1providesmodelinformationonbothQFansandSuperQIIFans.
ServiceModel
Number
QFCA4092HE0RE11NFFCAN000000000L
Table1
ModelNumberInformationforQFansandSuperQIIFans
QFNA-IOM-1 3
ModelNumber
Continuedonnextpage
ProductDescription
MODELQFNA TYPESQ2 SIZE40 ARRG9 CLAS2
UORTH DSEQE0 MTRSTT MTYPPO18 MSHP30
VOLT460 MOLOR GRSLN DTYPC1.5 WBALFACT
IOPTIB OOPTSH STPR2.5 FCFM30000 RPMF1421
BHPF22.4
4 QFNA-IOM-1
ModelNumber
Table1
ModelNumberInformationforQFansandSuperQIIFans (Continued)
Continuedonnextpage
QFNA-IOM-1 5
ModelNumber
SelectionCategory
17
Continuedonnextpage
Table1
ModelNumberInformationforQFansandSuperQII Fans(Continued)
6 QFNA-IOM-1
ModelNumber
Table1
ModelNumberInformationforQFansandSuperQIIFans(Continued)
WB
None
Special
Continuedonnextpage
QFNA-IOM-1 7
ModelNumber
Table1
ModelNumberInformationforQFansandSuperQIIFans(Continued)
°
°
LiteratureChangeHistory
QFNA-IOM-1 (August 1997)
ManualsupersedesFAN-IM-3
(975),reflectingABUsupportof
theQfansandSuperQfans.
Generalupdate.
AboutthisManual
Thismanualdescribesproper
installationofModelQFansand
SuperQIIFans.
Note: Theinstallationand
servicingoftheequipment
referredtointhisbookletshould
bedoneonlybyqualified,
experiencedtechnicians.
ModelQfansareshipped
assembledexceptforsomemotor
anddriveselectionsthatarenot
mountedforshippingreasonsor
areintendedforfieldinstallationat
customerrequest.
Accessoriesaremountedtothe
fanatthefactorywiththefollowing
exceptions:
A. InletVaneOption(Shipped
frommfg.tojobsite)
B. SilencerOption(Shippedfrom
mfg.tojobsite)
C. FlexDuctOption(Shippedwith
fan)
D. VerticalMountingLeg
Option(Shippedwithfan)
E. IsolatorOption
(Shippedwithfanorfrommfg.)
Theseaccessorieshavetheirown
installationinstructionswhichare
shippedwiththeaccessory.
TraneModelQfansandSuperQ
IIFansaredynamicallybalanced,
properlyaligned,andlubricated
beforeleavingthefactory.These
Procedures,however,donot
guaranteethatthefanwillbe
readytooperateonreceipt.
Damageandmisalignmentcan
occurduetoroughhandling
duringshipmentandinstallation.
Followallinstructionsinthis
manualtoassureasuccessful
installation.Failuretofollow
theseinstructionsmayvoidthe
warranty.
THISMANUALSHOULDBE
KEPTWITHTHEFANUNIT
SINCEITCONTAINS
INFORMATIONFORPROPER
MAINTENANCEAND
TROUBLESHOOTING.
WarningsandCautions
NoticethatWARNINGSand
CAUTIONSappearsat
appropriateintervalsthroughout
thismanual.WARNINGSare
providedtoalertinstalling
contractorstopotentialhazards
thatcouldresultininjuryordeath,
whileCAUTIONSaredesignedto
alertpersonneltoconditionsthat
couldresultinequipmentdamage.
Yourpersonalsafetyandthe
properinstallationofthisunit
dependuponthestrictobservance
oftheseprecautions.
Observethefollowingwarnings,
cautionsandallwarninglabelson
theunit:
WARNING!
ROTATINGPARTS
DISCONNECTALLELECTRIC
POWERINCLUDINGREMOTE
DISCONNECTSBEFORE
SERVICING.SECUREDRIVE
SHEAVESTOENSUREROTOR
CANNOTFREEWHEEL.
Failuretodisconnectpower
beforeservicingcancause
severepersonalinjuryordeath.
Note: Re-connectallgrounding
devices.Allpartsofthisproduct
capableofconductingelectrical
currentaregrounded.Ifgrounding
wires,screws,straps,clips,nuts
orwashersusedtocompletea
pathtogroundareremovedfor
service,theymustbereturnedto
theiroriginalpositionandproperly
fastened.
8 QFNA-IOM-1
GeneralInformation
AllModelQandSuperQIIfans
areshippedonskidstominimize
possibledamageintransit.
Caution:
NEVERLIFTAUNITBYTHE
BEARINGBRACKETS,MOTOR
BRACKETS,OROTHER
ACCESSORIES.NEVER
FORKLIFTTHEUNITBYTHE
HOUSING.Failuretohandle
properlywilldamagetheunit.
Fansizes16-44canbelifted
usingtheliftingholesinthe
squareouterframe.Ifaforkliftis
used,liftonlyundertheskidsor
frame,beingespeciallycarefulfor
unitswithspecialprotective
coatings.
Fansizes49-60shouldberigged
forliftingandhandlingbysecuring
chainsorcablesthroughthefront
andrearmostmountingsupports
andunderthehorizontalstiffening
anglesasshowninFigure1.
Storage
Thefollowingcriteriashouldbe
metwhenstoringtheunit.
Note: Protecttheunitfromthe
elements.
Whereoutsidestorageis
necessary,severalprecautions
areneeded.
• Firstcovertheinletbearingand
driveopening,thenplaceunitin
anareawithgooddrainageand
coverwithatarpifpossible.
• Donotuseplastictocompletely
covertheunitattheriskof
trappingcondensation.This
typeofcoveringcancause
excessmoisture,condensation
andrusting.
• DONOTSTACKFANS.
FANSIZES49-60THATSHIP
WITHANINLETBELLMUST
REMAINONTHESHIPPING
SKIDUNTILREADYTOBE
INSTALLEDONISOLATORS.
Theinletbellextendsbelowthe
bottomframeofthefanandcan
bedamagedifsetonthefloor
withoutskids.
Forextendedstorageorstorage
undersevereconditions:
• Asoftenasonceamonth,
purgethebearingswithfresh
greasetopreventmoistureor
dirtfromaccumulatinginthe
bearing.
• SeeMaintenanceSectionof
thismanual.
QFNA-IOM-1 9
Shipping,RiggingandHandling
Figure1—TypicalFanUnitShippedwithRigging
(Sizes49-60)
ProvideaFoundation
Mostunitswillbemountedtoor
hungfromaconcretestructure.If
mountedtoasteelstructure,the
mountingstructureshouldbe
welded.Table2referstounit
weights.
IsolatetheFan
Isolationshouldbeusedto
preventnoiseandvibrationfrom
beingtransmittedtothebuilding.
Arrangement9: Forunitssize
16-44,ClassIandII
Mountdirectlytofourflexible
isolatorsforeitherfloororceiling
mounting.Userailsforwall
mounting.Forvertically-mounted
fans,providemountinglegsto
whichisolatorsaremounted.
Arrangement9: Forunitssize
49-60,ClassIandII
Mountdirectlytoeightisolators
whenusedwithasteelor
concretebase.Eightboltsare
usedtomountthefantothebase
inholespre-drilled.Thesesizes
mustbemountedhorizontally.
Whenceilingsuspensionis
required,thefanmustbeseton
anintegralbasewhichishung
fromtheceiling.
Arrangement1: Forunitssize
27-44,ClassIandII
Useanintegralsteelorconcrete
baseratherthanindividual
isolators.Mountthefan
horizontallyasshowninFigure2.
Arrangements1and9:For
unitssize16-44,ClassIll
Providearigidintegralsteelbase
or,preferably,aninertiapad.
Mountthesefanshorizontally.
Note: Forsomeapplications
involvinglargefansandhigh
pressures,thrustrestraintsmay
berequired.Whenused,mount
themonthefansexteriorframe
membersatthehorizontal
centerline.
Clearances
Allowsufficientclearancearound
theequipmenttoprovideample
roomforservicingand
maintenance.Inletscreenmaybe
usedifthefanhasanunducted
inlet.Recommendedminimum
clearanceisnolessthan1/2the
fanwheeldiameterawayfroma
wallorobstruction.
Installation—QFan
10 QFNA-IOM-1
Installation—QFan
QFNA-IOM-1 11
Table2-UnitWeight(LessMotor,Drive,AccessoriesandShippingPackage)
UnitSize
Note: *NA-Thiscombinationofarrangement,classandsizeisnotavailable.
Figure2—IntegralBaseforArrangement1
TopView
Caution:
Whenthecustomerisproviding
drivesand/ormotor,theTrane
Companywillnotassumeany
responsibilityfordamages
occurringduetoselected
drivesormotors.
InstallationofMotorand
BeltguardWhenNOT
FactoryInstalled
Arrangement9
1. Removethebeltguardfrom
theshippingposition.Remove
thescrewsontwosidesalong
theedge(thenumbervaries
withthefansize).Lifttheguard
off.
2. Ifneeded,repositionthebelt
tightenertocorrespondtothe
specificbeltlengthandmotor
frame(drivecenterline).(See
Figure3).
3. Tomountthemotor,firstturn
theadjustingscrewsforthe
belttightener(anglesorbase
plate)downasfaraspossible.
4. Boltthemotortothebelt
tightener.Beforefinal
tightening,centerthemotoron
thebelttightener.
5. Checkthemotorrotationtobe
surethefanwillrotateinthe
directionshowninFigure4
whenthedriveisinstalled.
6. Disassemblethebeltguardby
removingtheclipsorscrews
thatholdthefrontandrear
panelstogether.SeeFigure5.
Sliptherearpanelassemblyof
thebeltguardovertheshaftso
thattheshaftprotrudes
throughtherubberblock-offto
beltguard.Onfanssizes
49-60,securetherubber
block-offbyputtingacrimpin
theslotsholdingblock-offto
beltguard.SeeFigure6.
Locatetheedgeoftherear
panelassemblyongasketing
approximately1/4"fromthe
drivehole.RefertoFigure7.
Centertherearpaneloverthe
driveholeintheshelland
securewiththeself-drilling
screwsprovidedasshownin
Figure8.
Arrangement1
Removethemotorpedestal
supportandbeltguardfromthe
topoftheunitandboltthe“F”
shapedpedestalsupporttothe
unitasillustratedinFigure2.
Mountsliderailbasetopedestal.
Boltthemotortothesliderail
base.Disassemblethebeltguard
byremovingtheself-tapping
screws.Sliptherearside
assemblyofthebeltguardover
themotorshaftsothattheshaft
protrudesthroughtherubber
block-off.SeeFigure6.Locatethe
edgeoftherearsideassemblyof
thebeltguardongasketing
approximately1/4"fromtheedge
ofthedriveholeinthefanshell.
Themotorshouldbeascloseto
thefanshaftcenterlineasthe
sliderailbasewillpermit.
Fastenthefrontsideassemblyof
thebeltguardtotherearside
assemblyalreadyinplaceonthe
unitwiththeself-tappingscrews
provided.Thepolyurethane
gasketmustremaininposition
duringthisoperation.Drillpilot
holesintheshellusingthefront
sideassemblyasatemplateand
attachtotheshellwithscrews
provedinFigure8.Attachsupport
legandanglewithscrews
provided.
Installation—QFan
12 QFNA-IOM-1
Installation—QFan
QFNA-IOM-1 13
Figure3—ShowsMotorMount
AngleAdjustment
Figure4—MotorRotationInletEnd
Figure5—BeltGuard
Disassembled
Figure6—MotorandSheave
Arrangement
Figure7—RearSideAssemblyof
BeltGuard
Figure8—FanDischarge
Airflow
InletSideView
InstallationofMotorand
BeltguardWhenNOT
FactoryInstalled
Arrangements1and9
Removethedischargecone
coveringthefanshaft.Checkthe
sheaveboreforburrsand
lubricateforeasiermounting.Do
notuseexcessiveforcewhen
mountingsheaves,asthismay
damagethebearings.Besurethe
fanandmotorshaftsareparallel.
SeeFigure9.
Setthemotorsheavewitha1/2"
spacebetweenblock-offretainer
andbackofsheaveasshownin
Figure6.Alignthesheaveswitha
straightedgeasinFigure9and
tightenthesetscrews.Whenthe
sheavesarenotthesamewidth,
placeastringinthecentergroove
ofbothsheavesandpulltight.The
stringshouldgostraightthrough
thecenterofbothgrooves.
Movethemotorinasclosetothe
fanshaftcenterlineasthe
adjustingangleswillpermit.
Slipthebeltsoverthesheaves
withoutforcingthem.Forcingthe
beltsmaycausedamage.
Tightenthebeltsslightlyand
manuallyrotatethedriveseveral
times.Asacheck,onmultiplebelt
drives,determinethattheforceof
deflectionisapproximatelythe
samebypushingeachbeltinan
equaldistanceatapointhalfway
betweenthesheaves.
Afterrealignment,tightenthebelts
toareasonabletension.Operate
theunitafewminutestoallow
beltstoseat(SeeStart-Up).Belts
shouldnotslipwhenrunning,but
aslightsquealatstartupis
normal. Donotover-tensionbelts.
Belttensionshouldberechecked
aftereighthoursofoperationand
monthlythereafter.Whenthebelt
isinoperation,thetightsideofthe
beltshouldformastraightline
fromsheavetosheavewithonlya
slightbowontheslackside.
Attachthefrontsideofthebelt
guardtotherearpanelassembly
alreadyinplaceontheunitusing
clipsorscrewsprovided.Keepthe
polyurethanegasketinposition
duringthisoperation.
Replacetheendconeusingthe
screwsand/orclipsoriginally
used.Besurebeltsdonotscrape
theedgeofthecutoutintheend
conewhentheunitisinoperation
Installation—QFan
14 FNA-IOM-1
Figure9—AligningSheavesWithAStraightEdge
ForSheavesOfTheSame
WheelAlignment
Arrangements1and9
Manuallyrotatethefanwheeltobe
surethatitturnsfreely.Thetip
clearancesaresetinthefactoryand
normallydonotrequirereadjustment.
todetermineifadjustmentis
required,measureandrecordthe
clearancesbetweenwheeland
housingatsixequallyspaced
intervalsaroundtheinsideofthefan
housing.Clearancesshouldbe
measuredattheleadingandlagging
edgeofthebladetip.Ifadjustmentis
necessaryloosenthefrontbearing
boltsandreadjustbearinglocation.
SeeFigure10.Onsizes16through
44,additionaladjustmentcanbe
obtainedbylooseningfrombearing
bracketandreadjustingposition.
Retightenallfastenersandtorque
perTables4and5.
TipclearancesaregiveninTable3
andbolttorquesinTable4and5.
Checkthespacingbetweentherear
edgeofthefanwheelanddiffuser
cylinder.Ifthisspacingisnotas
showninFigure11,movethefan
wheelontheshaftforproper
measurement.Toachievethis,
loosenthesetscrew(s)andmovethe
fanwheeloutsufficientlytoinserttwo
piecesofthecorrectthicknessbar
stock,oneateachsideofthewheel.
Movewheelgentlyagainstbarstock
pieces.Tightensetscrewandremove
barstockpieces.SeeFigure11.
Installation—QFan
QFNA-IOM-1 15
Figure11—ClearanceFanWheelDiffuser
Figure10—FrontBearingBracket
Installation—QFan
16 FNA-IOM-1
Unit
Size
TipClearance
(Inches)
16
19
.030to.075
.030to.075
21
24
.030to.075
.030to.075
27
30
.035to.080
.040to.085
33
46
.045to.090
.050to.095
40
44
.055to.100
.065to.110
Table3—TipClearanceBetween
WheelandHousingClass1,2
and3
BoltDia.
(Inches)
TorqueFt/Lb
1/4 6
5/16 12
3/8 24
7/16 52
1/2 69
9/16 99
5/8 150
Table4—RecommendedTorquesfor
WheelBolts(WheelBoltsareonFanSizes
(49-60Only)
BoltDia.
(Inches)
TorqueFt/Lb
1/4 6
5/16 12
3/8 20
7/16 43
1/2 58
9/16 76
5/8 115
3/4 195
Table5—NutandBoltTorque
RequirementsforFanHousing
andBearingSupports
QFanDuctConnections
Tomaintaincatalogperformance
theremustbeaminimumofthree
fandiametersofstraightductonthe
faninletandminimumofonefan
diameterofstraightductonthefan
discharge.A90°elbowatthe
dischargeshouldbeaminimumof
twofandiametersfromthefan
discharge.Anopenfaninletshould
neverbecloserthanonefan
diameterfromabulkhead.Usean
inletBELLforopeninletapplications
tomaintainratedperformance.
Inletductsshouldbethesame
diameterasthefaninlet.Outletducts
maybethesamediameterasthefan
outletorinlet.Iftheoutletductis
equaltotheinlet,eithertheduct
equalizeraccessoryorflexible
connectionshouldbeusedtomake
thetransition.Theinletandoutletare
thesamesizeonfansizes49-60".
SeeTables6and7forinletand
outletdiameters.
Flexibleconnectionsare
recommendedforquietoperationan
andarerequiredforunitsmounted
onvibrationisolators.Flexible
connectionsshouldbefastenedto
theinletoroutletsothattheydonot
extendintoeitheropening.Flexible
connectionsshouldnotbestretched
tight.Iftheconnectionstendtosag
oraremisalignedattheinlet,a
sectionofductwhoselengthisequal
toone-halfthewheeldiameter
shouldbeattachedtothefaninlet
aheadoftheflexibleconnection.
Inahorizontalruninwhichan
Arrangement9fanisboltedtoa
floor,wall,orsuspendedfroma
ceiling,ductworkmaybeflangeor
slipconnectedaslongasthereisno
distortionofthefanshellduetothe
ductweight.Thesameapplies to
Arrangement1fanswhichare
alwaysfloormounted.
Note:Flangedconnectionsrequire
inletoroutletflangeaccessory.
Accessdoorsshouldbeprovidedin
theinletandoutletductsifthe
flexibleconnectionsdonotpermit
sufficientaccesstothefan.The
accessdoorsshouldbelarge
enoughtomakepossiblevisual
inspectionofthebearingatthefan
inletandremovaloftheendcone
accesstothedriveandrearbearing.
SuperQ11Duct
Connections
Connectinletandoutletductworkto !
SuperQ11ductcollars.DONOT
SUPPORTEXTERNALDUCT
FROMTHEDUCTCOLLARS.
Externalductworkshouldbe
supportedindependentlyfromthe
floortotheceiling.
Tomaintaincatalogperformance,
theremustbeaminimumofthree
diametersofstraightductontheinlet
andminimumofonediameterof
straightductonthedischarge.A90°
elbowatthedischargeshouldbea
minimumoffandiametersfromthe
fandischarge.Anopenfaninlet
shouldneverbecloserthanonefan
diameterfromabulkhead.Usean
inletBELLforopeninletapplications
tomaintainratedperformancefor
sizes49through60only.
Installation—QFan
QFNA-IOM-1 17
Table6-InletandOutlet
DiametersforQFan
Unit
Size
Inlet Outlet
16
19
19-5/16
21-25/32
17-25/32
20-7/16
21
24
24-5/8
28-1/32
23-1/8
26-5/16
27
30
30-7/8
34-5/16
29
32-3/16
33
36
37-23/32
41-11/16
35-13/32
29-5/32
40
44
45-31/32
50-13/16
43-5/32
47-11/16
49
54
52-3/8
58-1/32
52-3/8
58-1/32
60 64-1/16 64-1/16
Table7-InletandOutlet
DiametersforSuperQIIFan
Unit
Size
Inlet Outlet
16
19
20-5/32
22-5/32
25-7/8
27-7/8
21
24
26-5/32
28-5/32
22-7/8
25-7/8
27
30
32-5/32
34-5/32
28-7/8
31-7/8
33
36
38-5/32
42-5/32
38-5/32
42-5/32
40
44
46-5/32
48-5/32
46-5/32
48-5/32
PreparationforMounting
Lifttheunitintopositionwitha
craneorforklift.Craneliftfromthe
endsofthesupportrailsusinga
spreaderbar.Whenusingafork,
liftfromunderbothsupportrails.
Ceiling Mounting
Hangceilingsupportedunitswith
four3/4-inchsteelrods,one
connectedtoeachcornerofthe
supportrail.Uselargeheavy
gaugewasherstoinsuretheunit
remainsattachedtotherods.
FloorMounting
Beforeunitstartup,always
removetheshippinghold-down
screwsfromthebottomoftheunit
tofreetheisolators.Thereisone
screwateachendofthehat
section.Usetheplugbuttons
(providedinthebagattachedto
theunit)tocovertheholes.
18 QFNA-IOM-1
Installation—SuperQII
Figure11a—InletVaneInstallation
InletVanes
Caution:
Due to the size of the equipment,
reasonable care must be taken
when loading, unloading,
handling and installing the inlet
vane assembly to avoid over
stressing and possible permanent
damage to the frame and related
components by excessive racing,
skewing, twisting etc.
1. Bracketangles,isolators,and
fastenersarecommon
procurementitemstobe
suppliedbythecustomer.See
Figure11a.
2. Usinganinletvaneanglering
asatemplatedrilleight(8)
holesofC(two(2)per
quadrantinQFanframe.
AssemblewithsizeDbolts,
nutsandlockwashers.
3. Positionsupportbracketunder
inletvaneassemblyasshown.
Usebrackettodrillsix(6)
holesinangleringonflow
enteringside.Usesamedrill
andfastenersizeasabove.
4. Weldorfastencornersofthe
brackettogetherandattach
isolator(s).
5. Usetwoisolatorsforsize49
through60only.Size16
through44usesoneisolator
mountedinthecenter.
Silencer—
QFanandSuperQIIFan
PlusDuctSilencers,when
ordered,areshippedloosefrom
themanufacturerandarefield
installed.
TheymustbeconnectedtotheQ
fanusingtheflexibleduct
connectorbuttheycanbeeither
rigidorflexconnectedtothe
SuperQfans.Silencersaresized
forQFanandSuperQFan
collars.Thesupportstructurefor
silencersandflexconnectorsare
providedbytheinstaller.
Inletsilencer— hasafixedcenter
bodyandshouldbeattachedas
perabovedescription.Theairflow
arrowonthesilencershouldfollow
thedirectionoftheairflow
indicatedontheQFan.
Outletsilencer— hasamovable
cylinder.Theinnercylinderhas
eithersheetmetalscrewsoris
spotwelded.Removethesheet
metalscrewsfromthesilencer
centerbodyorbreakthespot
weldswithachiselandhammer.
Thecenterbodymustthenbe
repositionedclosetotheendcap
ofthefan(nomorethanoneinch
fromtheendcap).Securethe
silencercenterbodywithsheet
metalscrewsandconnectwiththe
fanusingconnectorsasperabove
description.
Theairflowarrowonthesilencer
shouldfollowthedirectionofthe
airflowindicatedontheQFan.
QFNA-IOM-1 19
AccessoriesInstallation
Figure11b—TypicalSilencer
Start-UpProcedures
Thefollowingitemsmustbe
checkedbeforeinitialstart-upof
thefan:
1. Checkallbolts,setscrews,and
lockingcollarsonthefan,
bearings,drive,motormount,and
accessoriesfortightness.See
Tables4,5,10,11and13.
2. Turnthefanwheelbyhandtobe
sureitdoesnotstrikeanyportion
ofthehousing.SeeTable3fortip
clearancefortipclearance.
3. Recheckbearingalignmentand
lubrication.
4. Operatethevariableinletvanes
tobesuretheymovefreelyand
positionproperly.
5. Repairanycoatingflawsinunits
withspecialprotectivecoatings.
6. Checkswitchesandwiringto
motor.
7. Checkfanandductfordirtand
debrisandcloseallaccessdoors.
Foreignmaterialintheinletcone
cancausewheelimbalance.
8. Checkbeltalignmentandtension
asfollows:
• Tightenthebeltsslightlyand
manuallyrotatethedriveseveral
times.
• Onmultiplebeltdrives,determine
thattheforceofdeflectionis
approximatelythesameby
pushingeachbeltinanequal
distanceatapointhalfwayfrom
eachsheave.Ifthisforceisnot
thesameforeachbelt,themotor
andfanshaftarenotparallel.
Realignasrequired.
• Afterrealignment,tightenthebelts
againtoareasonabletension.
• Operatetheunitafewminutesto
allowbeltstoseat.Beltsshould
notslipwhenrunning,butaslight
squealatstart-upisnormal.DO
NOTOVER-TENSIONBELTS.
• Belttensionshouldberechecked
after8hoursofoperationand
monthlythereafter.Whenthebelt
isinoperation,thetightsideof
thebeltshouldformastraightline
fromsheavewithonlyaslightbow
ontheslackside.
Atinitialstart-up,checkthefanwheel
forproperrotation.Whenfacingthe
inlet,thewheelmustrotate
clockwise.
Ifthefanhasinletvanes,theycanbe
partiallyclosedtolowerpower
requirementsatstart-up.Onfans
withmulti-speedmotors,runinitial
checkoutatlowspeed.
Payparticularattentiontoany
vibration,noiseoroverheatingofthe
fanbearingsandmotor(bearings
mayrunwarmduringbreakin).
Vibrationisthemostcommon
problemencounteredduringstart-up.
Ifthevibrationissignificant,itmust
becorrectedbeforeallowingthefan
tooperatecontinuously.SeeTable8.
The“TroubleShooting”sectionof
thismanualdetailsthecommon
causesforvibration.Iftheproblemis
diagnosedasfanwheelimbalance,
useavibrationanalyzertorebalance
thefan.Theadditionofanybalance
weightscanbemadeontheinlet
cone.SeeFigure11.
DeterminingFanRPM
QFansandSuperIIFanswith
factoryinstalledmotoranddriveare
shippedwiththecorrectFanRPM.
However,ifthemotoranddriveare
fieldinstalledandtheFanRPM
needstobesetorchecked,the
followingprocedurecanbeused:
FanRPMcanbestbedeterminedby
usingastrobe-typetachometer.If
suchaninstrumentisnotavailable,
approximateRPMcanbederivedas
follows:
1. Removebeltguardandmark
motorsheave.
2. Byhand,rotatethefanwheel10
timeswhilecountingrevolutions
ofmotorsheavetothenearest
quarterturn.
3. DividethenameplatemotorRPM
bythenumberofrevolutionsof
themotorsheaveandmultiplyby
10.ThisisFanRPM.
Example: Ifmotorsheaverevolves
8-1/4turns--Motornameplate
states1750RPM.
20 QFNA-IOM-1
Start-UpQFansandSuperQII
Table8-MaximumAllowableVibrationonTraneModelQFans
FanSize FanRPM Vert,Horiz,andAxial
Fans
16-44 AllSpeeds 5Mils
49-60 Upto1000 4Mils
49-60 1000&Up 3Mils
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Trane Q Fan User manual

Trane
Brand
Trane
Model
Q Fan
Category
Household fans
Type
User manual
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