Twin City Centrifugal Fans - ES-52 - Manual (Page 4)

4 Twin City Engineering Supplement ES-52
.
RBO, RBR Wheel Placement
Size 913 915 917 919 921 923 926 929 933 937 941 945 949 954 960
B 0.53 0.53 0.59 0.69 0.78 0.88 0.97 1.03 1.22 1.38 1.56 1.69 1.81 1.88 2.16
the. key. should. be. placed. in.
the.keyway.pushed.toward.the.
bearing. as. far. as. the. runout.
will. allow. without. rubbing.. The.
back. of. the. sheave. should. be.
lined. up. with. the. end. of. the.
key. (see. Figure. 5. on. page. 3)..
For.sheaves.without.a.key,.the.
sheave. should. be. placed. as.
close. to. motor. and/or. bearing.
as. possible. without. rubbing..
Typically. the. sheave. should.
be. at. least. ¼". away. from. the.
motor,. bearing,. guard,. struc-
tures,.etc.
c..Align. sheaves. with. a. straight-
edge.extended.along.the.perim-
eters. of. both. sheaves,. just.
making. contact. in. two. places.
on. outside. perimeters. of. both.
sheaves.(see.Figure.6).
d..Tighten.down.sheave.bolts.
e..Install.a.matched.set.of.belts..Slide.the.motor.to.
obtain. slack. and. tighten. belts.. Using. a. pry. will.
damage.belts.
f... Tighten.belts.to.proper.belt.tension..Ideal.tension.
is. just. enough. tension. so. that. belts. do. not. slip.
under.peak.load..Recheck.sheave.alignment.
g..After.initial.installation.of.belts,.recheck.belt.tension.
again.after.a.few.days.to.adjust.belt.tension..(New.
belts.require.a.break-in.period.of.operation.)
10..Install. any. safety. devices. or. accessories. supplied..
(Accessories. commonly. used. are. inlet. vanes,. shaft.
seals.and.shaft.coolers,.plugs,.dampers,.and.inlet.or.
discharge.screens..Refer.to.appropriate.documents.
in.appendix.)
11..Grout. may. now. be. applied.. Grout. is. used. to. dis-
tribute.loads.and.should..not.be.used.as.the.sole.
support.of.any.rotating.equipment.
12..When.connecting.the.fan.to.the.system,.it.is.recom-
mended.that.the.inlet.and.discharge.be.isolated.from.
the.system.with.flex.connections.(where.practical).to.
block. transmitted. vibration.. All. duct. connections. to.
the.fan.should.be.independently.supported..Do.not.
use.fan.to.support.duct.
Fan Operation - Safety
For. general. safety. practices. for. air. moving. equipment,.
see.AMCA.Bulletin.410.
. Twin. City. Fan. &. Blower. has. many. safety. accesso-
ries.available..These.safety.devices.include.(but.are.not.
limited.to).belt.guards,.shaft.guards,.inlet.and.discharge.
screens..The.use,.abuse,.or.non-use.of.safety.devices.
is.the.responsibility.of.the.purchaser.
. Facility-related. safety. conditions. include. fan. acces-
sibility.and.location..How.easily.can.non-service.person-
nel. access. the. unit?. Is. the. fan. in. a. hazardous. duty.
environment?.Was.the.unit.ordered.for.this.duty?.Other.
concerns. must. also. be. addressed.. All. fans. should. be.
powered. through. switches. which. are. easily. accessible.
to.service.personnel.from.the.fan..Every.switch.should.
have.the.ability.to.be.“locked-off”.by.the.service.person.
and. the. key. to. be. retained. by. this. person. to. prevent.
accidental.power.of.the.fan.while.service.is.in.process.
A
DIA
B
RBO RBR
B B
B
A
B
A
B
A
SWSI DWDI
Figure 7. Wheel-Funnel Overlap
HIB, RTF, HRT* Wheel Placement
Size A B
B*
Size A B
B*
19 23 19 23
180 20.50 0.31 — .— 400 45.25 0.69 1.03 0.97
200 22.50 0.34 — — 450 50.00 0.75 1.13 1.06
220 25.00 0.38 — — 490 55.13 0.81 1.25 1.13
240 27.50 0.44 — — 540 61.00 0.91 1.38 1.25
270 30.38 0.47 0.50 0.50 600 67.50 1.00 1.31 1.31
300 33.50 0.50 0.69 0.69 660 74.25 1.13 1.56 1.44
330 37.00 0.56 0.69 0.69 730 82.00 1.22 1.75 1.63
360 41.00 0.63 0.81 0.81 800 90.75 1.34 1.06 1.31
HIB, RTF, HRT, BC, BCS, TSL, BAF, BAE, EPF & EPQ
BC-SW, BC-DW, BCS, TSL, BAF SWSI & DWDI Wheel Placement
Size 122 135 150 165 182 200 222 245 270 300 330
A 12.25 13.50 15.00 16.50 18.25 20.00 22.25 24.50 27.00 30.00 33.00
B 0.32 0.34 0.38 0.44 0.56 0.63 0.69 0.75 0.88 0.97 1.06
RBA, RBO & RBR
FC
Size 365 402 445 490 542 600 660 730 807 890
A 36.50 40.25 44.50 49.00 54.25 60.00 66.00 73.00 80.75 89.00
B 0.94 1.03 1.13 1.25 1.38 1.56 1.69 1.88 2.09 2.28
EPF, EPQ, BAE SWSI & DWDI Wheel Placement
Size 182 200 222 245 270 300 330 365 402 445 490
A 19.00 20.82 23.16 25.51 28.11 31.23 34.36 38.00 41.90 46.33 51.01
B 0.38 0.41 0.46 0.50 0.55 0.62 0.68 0.75 0.83 0.91 1.01
Size 542 600 660 730 807
A 56.48 62.47 68.71 76.00 84.07
B 1.11 1.23 1.36 1.50 1.66
EPF, EPQ Wheel Placement
Size 122 150 165
A 13.00 14.13 16.16
B 0.25 0.25 0.25
BAE SWSI & DWDI Wheel Placement
Size 122 135 150 165
A 12.25 13.50 15.00 16.50
B 0.31 0.34 0.38 0.44
A
RBA
RBA Wheel Placement
Size 907 909 911 913 915 917 919 921 923 926 929 933 937 941 945 949 954 960
A 0.25 0.38 0.47 0.53 0.59 0.69 0.69 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
MBW, MBO & MBR
MBW, MBO, MBR Wheel Placement
Size 196 224 252 280 308 336 365 421 477 533 589
MBW 0.50 0.44 0.38 0.25 0.38 0.44 0.56 0.63 0.75 0.75 0.88
MBO 0.50 0.44 0.38 0.25 0.38 0.44 0.56 0.63 0.75 0.75 0.88
MBR 0.25 0.25 0.25 0.25 0.25 0.38 0.50 0.69 0.81 0.94 1.00
GAP
FC Wheel Placement
Size A B Size A B
10.5 0.47 0.69 30 0.75 4.38
12 0.25 1.88 33 0.81 5.00
15 0.44 2.19 36 0.75 5.00
18 0.50 2.25 39 1.06 6.38
21 0.69 2.88 42 1.69 7.50
24 0.81 3.00 48 1.50 7.13
27 0.69 3.13 54 1.00 10.50
B
A
Dia.
BCN Wheel Placement
Size 270 300 330 365 402 445 490 542 600 660 730
B 0.09 0.09 0.13 0.13 0.13 0.16 0.16 0.19 0.22 0.22 0.25
BCN
APF & APQ Wheel Placement
Size 121 141 161 181 201 221 251 281 321 351 391 441 491 551 631 711 791
A 13.00 14.13 16.16 18.44 19.94 22.78 25.06 28.25 31.81 35.81 39.81 44.56 50.06 55.75 63.69 71.69 79.63
B 0.25 0.25 0.25 0.31 0.31 0.31 0.50 0.50 0.56 0.63 0.63 0.75 0.78 0.81 1.03 1.28 1.38
Note:.On.sizes.905-911.wheel.is.to.be.centered.in.housing.
*Use.second.'B'.columns.for.HRT-19.and.HRT-23.dimensions
Note:.On.sizes.421-589.wheel.is.to.be.centered.in.housing.
Figure 6.
Sheave Alignment