Greenheck QEI-L - Standard Construction and Nomenclature; Construction Features and Model Naming

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Standard Construction
Housing
Tubularhousingsareconstructedofweldedsteelto
eliminateairleakage.Integralstraighteningvanesare
constructedfromsteelandweldedintoplace.
Wheel – Mixed Flow
Fabricatedwheelsareconstructedfromsteel.The
bladeprofilesareangledandcontouredforthemost
efficientandquietperformance.
Bearings (Belt Drive)
Standardbearingsarepremiumairhandlingquality,
greaselubricated,self-aligning,ballorrollertype.
Bearingsareselectedwithabasicratingfatiguelife
L
10
perABMAstandards,inexcessof80,000hours
(L
50
at400,000hours)atthemaximumoperating
speedfortheQEI-I/IIandQEI-Linthehorizontal
position.TheQEI-Lbearingsareselectedwitha
basicratingfatiguelifeL
10
inexcessof50,000hours
(L
50
at250,000hours)inverticalposition.
Bolted Access Door
Aboltedaccessdoorprovidesanopeningthrough
thefanhousingforcleaningorvisualinspectionof
thewheel.Ahingedaccessdoorisavailableasan
accessory.
Belt Guard (Belt Drive)
Atotallyenclosedbeltguardprovidesprotection
fromrotatingpulleysandbelts.Beltguardsmeet
OSHAStandards.
Slip-Fit Duct Connection (QEI-I/II & QEID)
Inletsandoutletsaredesignedwithextendedcollars
forslip-fitductconnectionsasstandard.QEI-Lis
flangedasstandard.Companionflangescanbe
orderedforslipfitconnections.
Adjustable Motor Bases (Belt Drive)
Rigid,heavy-gaugesteelmotorbasesareweldedto
thefanhousingandincludeheavy-dutyadjustment
screwsforbelttensioning.
Extended Lube Lines
Beltdriveunitshavenylonlubricationlineswith
greasefittingsthatallowbearinglubricationwithout
disassemblingthefan.Greasefittingsaremounted
ontheoutsideofthefanhousing.Directdrive
unitshaveextendedlubricationlinesforthemotor
bearings,ifrequired.Smallerframesizedmotorsare
typicallysealedandnotlubricatable.
Permatector™ Coating
Greenheck’sPermatectorcoatingisathermosetting
polyesterurethane,electrostaticallyappliedto
provideuniformthicknessandacleanappearance.
Permatectorcoatingsalsoprovideexcellent
corrosioncharacteristicsforgeneralapplications,
bothindoorandoutdoor.Forcorrosiveenvironments
(ie.coastal),seepage9forinformationonourzinc-
richbasecoattechnology.
Model Number Nomenclature
Themodelnumbercodeprovidesanumberingsystemdesignedtoidentifythefanmodel,
sizeandhorsepower.
QEI D* - 36 - I - 70 - A 30
D = Direct Drive
Percent Wheel Width
50 through 100
Fan Size
9, 12, 15, 16, 18, 20,
22, 24, 27, 30, 33, 36,
40, 44, 49, 54, 60
Motor Horsepower
4 = ¼ 30 = 3 300 = 30
3 = 50 = 5 400 = 40
5 = ½ 75 = 7½ 500 = 50
7 = ¾ 100 = 10 600 = 60
10 = 1 150 = 15 750 = 75
15 = 1½ 200 = 20 1000 = 100
20 = 2 250 = 25 1250 = 125
RPM
A = 1770 C = 870 J = 1425 M = 3600
B = 1170 F = 690 K = 950 R = 2900
Construction
L = Low Pr
essure
I = Class
I
II = Class II
3
* Blue text is specific to direct drive model QEID only
Belt Drive available in sizes 9 through 60
Direct Drive available in sizes 12 through 54
Low Pressure available in sizes 12 through 36