smoke stair or elevator press fan

7/31/2019 Smoke Stair or Elevator Press Fan

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NOTE: Height of Support Legs is factorysupplied to suit Stairwell or ShaftOpening. Please specify whileordering.

Weather Cover Motorized Damper

Weather Cowl

Inlet Screen

Concrete Base

Stairwell or Elevator Shaft

Opening

Rubber Pads for Vibration Isolation

Support LegsTransitionConnection

Roof Mounted Assembly Model RBD - Belt DriveSTAIR / ELEVATOR PRESSURIZATION

AIR FLOW


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DIRECT DR IVE TUBEAXIAL F AN S

1

jtantay 03.09.10

C US

POWER VENTILATOR44DU E - Diameter of holes

F - Number of holes

Housing construction of Heavy Gauge Steel

12 through 40 Airfoil Cast Aluminum Propeller Blade

Ranging from 800 to 44,000 CFM

Static Pressure 0 to 3 SP.

Motor sizes are 1/4 to 30 HP depending on propeller sizeand CFM desired

The RDD is a Direct Drive fan with motor in the airstream

Model RDD

F A N D I M E N S I O N S

B RUNNING(Factory Standard)

AIR FLOW

A RUNNING(Optional - specify when required)

A

B

C

D

AIR FLOW

All dimensions are in inches.


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BELT DR IVEN TUBEAXIAL FANS

2

E - Diameter of holes

F - Number of holes

J

G

IH H

OptionalMounting

Legs

Housing construction of Heavy Gauge Steel

12 through 48 Airfoil Cast Aluminum Propeller Blade

Ranging from 1300 to 70,000 CFMStatic Pressure 0 to 3 SP.

Motor sizes are 1/4 to 50 HP depending on propeller sizeand CFM desired

The RBD is a belt drive fan with motor and drives out of the airstream

Model RBD

jtantay 03.09.10

FAN DIMENSIONS

* Custom mounting legs are available upon request

C US

POWER VENTILATOR44DU

AIR FLOW

A RUNNING(Optional - specify when required)

All dimensions are in inches.

B RUNNING(Factory Standard)

A

B

C

D

AIR FLOW

Reversomatic ManufacturingLimited certifies that ModelsRBD-12 to RBD-48 inclusiveshown on pages 7, 8 & 9 arelicensed to bear the AMCASeal. The ratings are based ont e s t s a n d p r o c e d u r e sperformed in accordance withAMCA Publication 211 andAMCA Publication 311 andcomply with the requirementsof the AMCA Certified RatingsProgram.


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5/14

DIRECT DRIVE 150/5 BA: BLADE ANGLE 150/10 BA: BLADE ANGLE

RPM CFM 0 SP 1/8 SP 1/4 SP 3/8 SP 1/2 SP 3/4 SP 1 SPBA HP BA HP BA HP BA HP BA HP BA HP BA HP

RDD 21864 1800 11 0.04 15 0.07 18 0.13

2000 13 0.04 17 0.07 19 0.15 2400 16 0.06 21 0.10 23 0.18 2800 20 0.08 26 0.13 27 0.23 3200 24 0.11 31 0.18 31 0.29 3400 27 0.13 35 0.21 34 0.33 3600 29 0.16 30 0.25 37 0.38 3800 32 0.18 32 0.29 4000 32 0.25 34 0.33 4200 34 0.29 37 0 ,38 4400 36 0.33 39 0.43 4600 38 0.38

1170 2400 11 0.09 12 0.12 15 0.17 20 0.23 19 0.35 2800 13 0.12 14 0.14 18 0.20 24 0.30 21 0.413200 16 0.14 17 0.18 21 0.25 28 0.38 24 0.48 3600 19 0.19 21 0.23 25 0.32 34 0.47 27 0.564000 22 0.23 24 0.28 29 0.39 26 0.54 30 0:67 4400 25 0.29 27 0.35 33 0.49 29 0.63 34 0.814800 28 0.37 31 0.44 30 0.62 33 0.77 39 1:02 5200 32 0.47 37 0.58 33 0.76 37 0.95 5600 38 0.61 34 0.77 37 0.93 6000 36 0.83 37 0.93 6400 39 1.01

1740 3600 11 0.30 11 0.31 12 0.38 13 0.45 14 0.52 19 0.70 18 1.064000 12 0.36 12 0.37 13 0.43 14 0.51 16 0.60 21 0.80 19 1.19 4400 14 0.42 14 0.43 14 0.49 17 0.59 19 0.68 23 0.95 21 1.33 4800 16 0.48 16 0.49 17 0.58 19 0.68 21 0.79 26 1.10 23 1.47 5200 18 0.58 18 0.59 19 0.68 21 0.79 23 0.92 29 1.27 24 1.62 5600 20 0.67 20 0.69 22 0.80 23 0.92 25 1.06 32 1.48 26 1.83 6000 22 0.79 22 0.81 24 0.92 26 1.06 28 1.23 38 3.11 29 2.04 6400 24 0.92 24 0.93 26 1.07 28 1.23 31 1.42 28 1.91 31 2.30 6800 27 1.06 27 1.10 28 1.24 31 1.42 34 1.66 30 2.11 33 2.62 7200 29 1.27 29 1.29 31 1.46 34 1.68 29 1.99 32 2.43 36 3.03 7600 31 1.47 32 1.51 34 1.72 31 2.09 32 2.30 34 2.76 39 3.518000 34 1.72 35 1.77 32 2.21 33 2.41 34 2.63 37 3.19 8400 39 2.08 34 2.35 34 2.55 35 2.77 37 3.018800

35 2.63 35 2.63 37 2.89 38 3.14 39 3.419200 38 3.01 38 3.01 39 3.25

4


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DIRECT DRIVE

RPM CFM 0 SP 1/8 SP 1/4 SP 3/8 SP 1/2 SP 3/4 SP 1 SP 1-1/2 SP 2 SPBA HP BA HP BA HP BA HP BA HP BA HP BA HP BA HP BA

RDD 24 150/5 BA: BLADE ANGLE 150/10 BA: BLADE ANGLE 864 2800 12 0.07 15 0.10 23 0.19 22 0.31

3200 14 0.09 18 0.13 28 0.24 25 0.35 3600 18 0.11 21 0.16 34 0.30 28 0.42 4000 20 0.14 24 0.20 24 0.34 31 0.49 4400 23 0.17 28 0.25 28 0.40 35 0.57 4800 26 0.21 32 0.30 31 0.47 5200 29 0.26 37 0.38 34 0.55 5600 33 0.33 32 0.48 38 0.666000 39 0.43 35 0.57 6400 35 0.54 38 0.67 6800 39 0.65

1170 3400 10 0.15 11 0.18 14 0.23 18 0.31 23 0.47 24 0.813800 12 0.18 13 0.20 16 0.27 19 0.36 28 0.584200 14 0.21 15 0.23 18 0.32 22 0.43 19 0.63 27 0.99 4600 16 0.24 17 0.28 20 0.37 24 0.50 21 0.71 29 1.10 5000 18 0.29 19 0.33 22 0.44 27 0.60 23 0.80 32 1.24 5400 20 0.34 21 0.39 24 0.51 31 0.70 25 0.89 5800 22 0.41 23 0.46 27 0.60 34 0.81 28 1.016200 24 0.47 26 0.54 30 0.70 27 0.96 30 1.14 6600 26 0.54 28 0.63 33 0.80 29 1.07 32 1.28 7000 29 0.64 31 0.73 39 0.98 32 1.22 34 1.43 7400 32 0.76 34 0.84 31 1.16 34 1.37 38 1.64 7700 34 0.88 38 0.98 33 1.28 36 1.518200 33 1.17 34 1.27 36 1.50 39 1.75 8600 35 1.32 36 1.44 38 1.67 9000 37 1.50 38 1.61

1740 5000 10 0.50 10 0.50 11 0.56 12 0.64 13 0.72 17 0.94 20 1.24 19 2.20 6000 13 0.65 13 0.65 14 0.70 15 0.80 17 0.92 19 1.18 24 1.63 23 2.64 7000 17 0.82 17 0.82 17 0.92 19 1.05 20 1.20 23 1.57 31 2.25 27 3.218000 20 1.12 20 1.13 21 1.24 22 1.40 24 1.58 28 2.07 24 2.72 31 3.919000 23 1.47 23 1.47 24 1.62 26 1.83 28 2.07 34 2.65 28 3.35 35 4.72

10000 27 1.87 27 1.89 29 2.11 31 2.35 33 2.62 29 3.49 32 4.09 11000 32 2.48 32 2.50 34 2.71 37 3.08 31 3.67 33 4.31 36 5.0112000 38 3.46 39 3.47 33 3.92 34 4.27 35 4.60 37 5.28 13000 36 4.54 36 4.54 37 4.85 38 5.20 39 5.56

RDD 30 150/5 BA: BLADE ANGLE 150/10 BA: BLADE ANGLE 864 4000 10 0.09 12 0.15 17 0.24 16 0.42

5000 13 0.14 15 0.20 20 0.33 18 0.51 24 0.72 6000 16 0.18 18 0.27 24 0.43 22 0.63 28 0.90 7000 19 0.26 22 0.37 29 0.56 25 0.78 32 1.10 8000 23 0.35 26 0.48 26 0.73 29 0.969000 26 0.46 31 0.62 29 0.90 33 0.12

10000 31 0.64 39 0.93 33 1.15 11000 37 0.86 33 1.10 37 1.4612000 35 1.16 37 1.38 13000 39 1.47

1170 5400 10 0.21 10 0.28 12 0.39 15 0.50 18 0.66 17 1.13 6000 11 0.27 12 0.33 14 0.44 16 0.58 19 0.75 18 1.24 7000 14 0.38 14 0.41 16 0.55 19 0.73 22 0.93 20 1.418000 16 0.44 16 0.52 19 0.69 21 0.89 25 1.12 23 1.669000 18 0.57 19 0.64 21 0.86 24 1.09 29 1.38 25 1.94

10000 21 0.69 22 0.81 24 1.06 28 1.32 24 1.67 28 2.27 11000 23 0.90 24 1.02 27 1.27 32 1.67 27 1.96 31 2.65 12000 25 1.08 27 1.24 31 1.54 27 1.99 29 2.28 34 3.18 13000 29 1.40 30 1.51 36 2.05 29 2.32 32 2.72 14000 33 1.76 37 2.14 31 2.40 33 2.79 35 3.24 15000 37 2.22 32 2.45 34 2.85 36 3.31 39 3:90 16000 34 2.82 35 2.90 37 3.37 39 3.9117000 37 3.28 38 3.42 39 3.93 1740 8000 10 0.70 10 0.70 10 0.88 11 1.05 12 1.22 14 1.53 17 1.94 15 3.33 10000 13 1.14 13 1.14 13 1.23 14 1.42 14 1.61 17 2.08 20 2.62 18 4.13 23 5.7111000 14 1.41 14 1.41 14 1.43 15 1.65 16 1.89 19 2.41 22 3.02 19 4.47 25 6.29 12000 16 1.48 16 1.48 16 1.67 17 1.92 18 2.19 21 2.78 24 3.44 22 5.01 27 7.10 13000 18 1.77 18 1.77 18 1.94 19 2.21 20 2.52 23 3.20 26 3.94 23 5.58 29 7.8114000 19 2.09 19 2.09 20 2.22 21 2.58 22 2.94 24 3.66 28 4.48 25 6.20 31 8.65 15000 21 2.34 21 2.34 22 2.63 23 3.01 24 3.40 27 4.14 33 5.59 27 6.91 33 9.75 16000 23 2.80 23 2.80 23 3.09 24 3.50 26 3.87 29 4.64 25 5.86 28 7.64 17000 24 3.31 24 3.31 25 3.56 27 3.96 28 4.34 33 5.56 27 6.53 30 8.48 18000 26 3.64 26 3.64 27 4.06 28 4.45 30 4.89 39 6.36 28 7.24 33 9.63 19000 28 4.36 28 4.36 29 4.63 31 5.15 34 5.93 29 7:08 30 8.06 35 10.93 20000 31 5.14 31 5.14 32 5.49 34 6.19 38 7.28 30 7.94 32 9.13 21000 33 5.94 33 5.94 38 6.53 30 7.30 31 7.83 32 8.97 34 10.27 22000 36 6.84 36 6.84 32 7.67 32 8.23 33 8.81 34 10.06 37 11.60 23000 33 8.41 33 8.41 33 8.61 34 9.22 35 9.86 37 11.29 39 13.00 24000 35 9.25 35 9.25 35 9.63 36 10.30 37 11.01 39 12.57

PERFORMANCE DATA OF TUBEAXIAL FANS

5


7/14


8/14

0 SP 1/8 SP 1/4 SP 3/8 SP 1/2 SP 3/4 SP 1 SP 1-1/2 SP

CFM CFM CFM CFM CFM CFM CFM CFM

BELT DRIVE 150 mm HUB DIA. 5 BLADES 25BLADE ANGLE

RBD-120.25 HP 353 2371 1294 1251 1167 1076 986 766

0.33 HP 471 2601 1429 1382 1303 1224 1142 953 662

0.50 HP 707 2988 1632 1592 1518 1446 1370 1 205 9460.75 HP 1059 3420 1870 1820 1760 1690 1620 1 460 1200 460

1.00 HP 1413 3765 2057 2006 1949 1879 1812 1 657 1384 566

RBD-150.50 HP 631 1860 2258 2070 1850 1610 1215 250

0.75 HP 1032 2192 2661 2500 2348 2145 1930 81 0 353

1.00 HP 1268 2348 2850 2710 2560 2390 2200 161 0 590

1.50 HP 1894 2685 3260 3200 3000 2876 2760 2 364 1190 432

2.00 HP 2528 2955 3587 3390 3280 3190 3080 2 790 2300 850

RBD-180.75 HP 864 1951 3613 3493 3256 3021 2769 2 230

1.00 HP 1153 2148 3978 3857 3641 3421 3197 2 699 1995

1.50 HP 1730 2459 4558 4445 4245 4038 3831 3 379 2690 878

2.00 HP 2307 2706 5018 4895 4713 4519 4313 3 880 3174 1213

3.00 HP 3460 3097 5741 5599 5439 5251 5059 4 632 3875 1600

RBD-210.75 HP 800 1580 4606 4422 4064 3698 3320 2 340

1.00 HP 1068 1739 5066 4895 4570 4231 3878 3 0991.50 HP 1602 1991 5797 5642 5348 5044 4726 4 045 3065

2.00 HP 2136 2191 6384 6227 5952 5665 5371 4 729 3763 1199

3.00 HP 3204 2508 7305 7125 6896 6619 6350 5 736 4721 1854

RBD-241.00 HP 987 1478 7996 7636 7124 6624 5997 4 505

1.50 HP 1480 1691 9150 8839 8391 7977 7458 6 424 4924

2.00 HP 1973 1861 10071 9786 9375 9017 8524 7 655 6528

3.00 HP 2960 2132 11479 11227 10915 10603 10187 9459 8524 3742

5.00 HP 4933 2528 13664 13318 13059 12840 12494 1 1836 11098 5548

RBD-271.00 HP 931 1365 9738 9096 8264 7495 6516 5 148

1.50 HP 1396 1561 11170 10585 9848 9193 8424 6 648

2.00 HP 1861 1718 12285 11799 11071 10491 9788 8409 7171

3.00 HP 2792 1969 14047 13654 12962 12451 11821 1 0743 9345 4409

5.00 HP 4654 2334 16650 16278 15690 15272 14704 1 3745 12590 5940

PERFORMANCE DATA OF TUBEAXIAL FANS

MOTORH.P.

Max. InputPower Watts FAN RPM

7

NOTE: Performance certified is for installation type A; Free Inlet, Free Outlet. Performance ratings do not include the effects ofappurtenances (accessories). Power (BHP) includes transmission losses. The sound ratings shown are loudness values in fansones at 1.5 m (5 ft.) in a hemispherical free field calculated per AMCA International Standard 301. Values shown are for:

Installation A: Free inlet hemispherical sone levels.


9/14

BELT DRIVE 150 mm HUB DIA. 5 BLADES 25BLADE ANGLEMOTOR Max. Input

FAN RPM0 SP 1/8 SP 1/4 SP 3/8 SP 1/2 SP 3/4 SP 1 SP 1-1/2 SP 2 SP 2-1/2 SP

HP Power Watts CFM CFM CFM CFM CFM CFM CFM CFM C FM CFM

RBD-30

1.00 HP 883 1148 11479 10556 9404 8366 7035

1.50 HP 1324 1313 13191 12332 11305 10408 9389 6872

2.00 HP 1765 1445 14500 13812 12767 11965 11052 9163

3.00 HP 2648 1655 16614 16081 15008 14299 13455 12027 10165

5.00 HP 4412 1963 19635 19238 18322 17704 16914 15654 14082 6333

7.50 HP 6619 2247 22455 22000 21440 20817 19990 18803 17440 8583

RBD-33

1.00 HP 841 990 13221 12016 10545 8467 7554

1.50 HP 1262 1133 15211 14078 12762 10969 10355 7096

2.00 HP 1682 1246 16714 15825 14462 12859 12316 9917

3.00 HP 2523 1428 19182 18508 17055 15637 15088 13310 10986

5.00 HP 4205 1693 22621 22198 20953 19718 19124 17562 15574 6725

7.50 HP 6308 1938 25870 25385 24519 23185 22602 21095 19288 9114

RBD-36

2.00 HP 1760 1045 17769 16390 15240 13964 12311 8783

3.00 HP 2640 1196 20278 19219 18073 16873 15531 13292 6733

5.00 HP 4400 1418 24093 23316 22176 21140 19793 18135 11399

7.50 HP 6600 1627 27506 26731 26731 24922 23581 22122 14465

10.0 HP 8800 1787 30317 29462 29462 27928 26517 25256 16798

NOTE: Performance certified is for installation type A; Free Inlet, Free Outlet. Performance ratings do not include the effects ofappurtenances (accessories). Power (BHP) includes transmission losses. The sound ratings shown are loudness values in fansones at 1.5 m (5 ft.) in a hemispherical free field calculated per AMCA International Standard 301. Values shown are for:Installation A: Free inlet hemispherical sone levels.

Test Data

RBD12

RBD15

RBD18

RBD21

RBD24

RBD27

RBD30

RBD33

RBD36

0

10

20

30

40

50

60

0 5 10 15 20 25

CFM x 1000

S

O

N

E

S

SONES AT 0.00 STATIC PRESSURE


10/14

BELT DRIVE

FAN RPMMOTOR

HP

RBD-40

RBD-42

RBD-48

0 SPCFM

1/8 SPCFM

1/4 SPCFM

3/8 SPCFM

1 SPCFM

/2 SPCFM

1 3/4 SPCFM

1-1/2 SPCFM

2 SPCFM

2-1/2 SPCFM

2.00 HP3.00 HP5.00 HP

7.50 HP10.0 HP

94910861288

14751623

201002310027300

3130034500

196002260027300

3130034500

182002170026500

3080034200

166002030025500

3000033500

147001890024400

2910032800

1540021900

2720031100

155702259027090335703843042390

1940024800 18300

2.00 HP3.00 HP5.00 HP7.50 HP10.0 HP15.0 HP20.0 HP25.0 HP

848972

115313191454166218321974

1980022680269103078033930387904275046080

1908022230267303078033930387904275046080

1737020790256502997033390386104266045990

1530019170244802898032490379804212045630

1278017370230402790031590371704149045090

11790198902538029430354604005043830

292503483039150

19000

2500029200

3060035640

2511031410

250 mm HUB DIA. 7 BLADES 25BLADE ANGLE

250 mm HUB DIA. 7 BLADES 25BLADE ANGLE

380 mm HUB DIA. 14 BLADES 25BLADE ANGLE2.00 HP3.00 HP5.00 HP7.50 HP10.0 HP15.0 HP20.0 HP25.0 HP

771884

104811991322151316651794

2200025200299003420037700431004750051200

2120024700297003420037700431004750051200

1930023100285003330037100429004740051100

1700021300272003220036100422004680050700

1420019300256003100035100413004610050100

13100221002820032700394004450048700

173002510030100373004270047100

325003870043500

3400039600

2790034900

NOTE: Height of Support Legs is factorysupplied to suit Stairwell or ShaftOpening. Please specify whileordering.

Weather CoverMotorized Damper

Weather Cowl

Inlet Screen

Concrete Base

Stairwell orElevator Shaft

Opening

Rubber Pads forVibration Isolation

Support LegsTransitionConnection

Roof Mounted Assembly Model RBD - Belt DriveSTAIR / ELEVATOR PRESSURIZATION

9

NOTE: Heavy duty blades are available for 20 to 50 HP & 40,000 to 70,000 CFM fans depend on operating conditions.Contact factory for selection & more information.

AIR FLOW


11/14

INSTALLATIONReversomatic RDD and RBD duct fans may be mountedin any position using several different methods, mountingbrackets for ceiling suspension and support legs for floormounting. Angle supports for rod hangers. For conveniencein wiring & service, the motor should be readily accessible.On direct drive units, access through adjacent duct work isrecommended. On belt drive units, the motor position must

be considered with regard to service and adjacent objectssuch as wall and ceiling. Access door is provided.The duct fan has flanged ends on the steel housing forconvenience mounting directly in the duct system. Flexibleconnections or transition pieces may be utilized to reducenoise transmission, simplify duct attachment and provideaccess to interior of fan.

RBD TYPICAL SPECIFICATIONAll belt-drive tube axial fans supply and/or exhaust aremodel RBD as manufactured by Reversomatic. Propellerconstruction consists of extruded aluminum propeller bladesmounted in cast aluminum hub.The blade pitch ispre-set at the factory to match design conditions andlocked into place by means of a self-locking pin. Allpropellers are statically and dynamically balanced forvibration-free operation. All fans have a heavy gauge steelhousing and power assembly. All bearings are grease

lubricated ball bearing pillow block type with a minimumaverage life of 100,000 hours. All units have external greasefittings for ease in lubricating. Oil resistant nonstatic belts areprovided. All fans bear the AMCA seal for sound and airperformance. All steel sheet metal parts are cleaned,conditioned and painted with enamel paint finish prior toassembly. A final coat of gray enamel is applied to all exteriorsurfaces after assembly.

MAINTENANCETube axial fans should be cleaned as necessary toremove accumulated dust, dirt and other foreign matterwhich my collect on the blades or interior surfaces. Beltdrive, belt(s) should be inspected and tensionadjusted. Check belt(s) for proper alignment. On all beltdrive models fan bearings are factory lubricated forextended service.External relubrication fan bearing fittings are standard

with belt drive models. Pillow-block ball bearings shouldbe lubricated annually or more frequently, dependingupon conditions and operating cycle. For lubrication ofelectric motor, see instructions supplied by motormanufacturer. Always check blade clearance and checkdirection of rotation with arrow on housing beforeoperating.

W A R R A N T Y

REVERSOMATIC MANUFACTURING LIMITED WARRANTS IT WILL PROVIDE A REPLACEMENTPART OF ITS FANS FOUND TO BE DEFECTIVE IN MATERIAL OR WORKMANSHIP FOR A PERIODOF ONE YEAR FROM DATE OF PURCHASE FOR FIRST USER, F.O.B. OUR PLANT.

NOTE: THIS WARRANTY DOES NOT APPLY TO LABOR COSTS INVOLVED IN REPLACEMENTOR REINSTALLATION, DIAGNOSTIC SERVICE, CLEANING AND ADJUSTMENT ORTRANSPORTATION. FURTHERMORE WARRANTY IS ONLY APPLICABLE WHEN REVERSOMATICREPLACEMENT PARTS AND ACCESSORIES ARE USED.

APPROXIMATE SHIPPING WEIGHT (LESS MOTOR) LBS

3036404248

209396440

286418484528616

FANSIZE

RDD RBD

1215182124

66110141158176

79121150198238

FANSIZE

RDD RBD


12/14


13/14

790 Rowntree Dairy Road, Woodbridge, ON, Canada L4L 5V3 Tel: 905-851-6701 Fax: 905-851-8376Reversomatic Manufacturing Ltd.

www.reversomatic.com [email protected]

INSTALLATION & MAINTENANCE GUIDEGeneral Instructions

J . T A N T A Y 0 1

. 1 4 . 1 0

REGULAR MAINTENANCE / LUBRICATION OF THIS UNIT IS REQUIREDTO MAINTAIN THE MANUFACTURERS WARRANTY.

FOR MOTORS LARGER THAN 7 HP, AN ELECTRONIC SOFT STARTCONTROL IS RECOMMENDED FOR LONGER BELT LIFE.

WARNINGS AND SAFETY INSTRUCTIONS

1. FAN BELT (IF USED) TIGHTNESS AND ALIGNMENT.2. FAN BLADE CENTERING AND ROTATION.3. FAN BLADE MOUNTING BOLT TIGHTNESS.4. MOTOR MOUNTING PLATE BOLT TIGHTNESS.

5. BEARING LUBRICATION.

IT IS STRONGLY RECOMMENDED THAT BEFORE STARTING UPTHE FAN THE FOLLOWING INSPECTIONS ARE PERFORMED.

1. Do not operate the fan excess of maximum limit.2. Do not permit any object to enter the fan inlets or outlets; provide a screen covering.3. Do not operate the fan without adequate guards over rotating parts; provide drive belt,

coupling and shaft guards.4. Provide a disconnect switch with a padlock to prevent fan switch use during maintenance.5. Locate a disconnect switch at the fan for use of personnel working on the fan.6. Provide vibration limiting switches to detect sudden changes in the operation of the fan,

especially when operating a fan under high temperatures or in an extremely corrosiveatmosphere such as fly ash.

7. Lubricate and service bearings regularly. see lubrication schedule.

C A U T I O N


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INSTALLATION & MAINTENANCE GUIDEPerformance Problems:

CFM too low - These are some common sources of this problem:

Fan - forward curved impeller installed backwards, fan running backwards, cutoff missing or improperly installed, impeller not centered with inletcollars, fan speed too slow.

System - more resistant to flow than expected, dampers or registers closed, leaks in supply ducts, insulating duct liner loose, clogged filters or coils.

Fan Inlets - leaks around fan inlets, elbows near the inlet, cabinet walls too close. Inlet obstructions cause more restrictive systems but do not

cause increased negative pressure readings near the fan inlets. Fan speed may be increased to counteract the effect of restricted faninlet, but check the maximum RPM for the wheel construction before increasing the speed.

Fan Outlet - most centrifugal fans are used in ducted systems and have been tested with a length of straight duct at the fan outlet, If there is nostraight duct at the fan outlet, decreased fan performance will result. If it is not practical to install a straight section of duct at the fanoutlet, the fan speed may be increased to overcome this pressure loss. Other sources affecting fan outlet may be sharp elbow nearby,improperly designed turning vanes or other obstructions near the outlet.

Noise - may be caused by:a. Impeller hitting the inlet of the fan or cutoff plate, loose impeller.b. Drives can cause noise if sheaves are not tight on the shaft, belts are too loose or too tight, wrong belt cross section, or mis-matched

belts, also worn belts, oily belts or mis-aligned sheaves.c. If couplings are used they may be source of noise by being unbalanced, misaligned, loose or dry of lubricant.d. Bad bearings are a common source of noise when defective, dry of lubricant, loose on the bearing support, loose on the shaft,

seals mis-aligned, dirty lubricant, fretting corrosion between inner race and shaft, etc. See separate section on bearing care.e. There can be an electrical source of noise such as AC hum in motor or relay, starting relay chatter, noisy motor bearings, single phasing

a 3 phase motor, etc.

f. A bent or undersized shaft may be a noise source. IF MORE THAN TWO BEARINGS ARE ON THE SAME SHAFT, THEY MUST BE CAREFULLY ALIGNED.g. There may be other noise sources such s obstruction in high velocity air stream causing rattle or pure tone whistle, fan operating at

undesirable design point, causing pulsation, cracks or holes in duct work, or whistles in fan housing.

TROUBLESHOOTING LIST

IMPELLER

DRIVE

COUPLING

BEARING

SHAFT

MOTOR

LOOSE FASTENERS

a. Loose on shaftb. Unbalance

a. Sheave not tight on shaft (motor or fan)b. Belts hitting belt tube or belt guardc. Belts too loose. Adjust for belt stretching after

48 hours of operation.d. Belts too tighte. Belts wrong cross-sectionf . Belts not Matched in length on multi-belt driveg. Variable pitch sheaves not adjusted so each groove

has same pitch diameter (multi-belt drive)

h. Misaligned sheavesI . Belts worn j . Motor, Motor base or fan not securely anchoredk. Belts oily or dirtyl . Improper drive selectionm. loose keyn. Excessive start-stop cycles

a. Coupling unbalanced, misaligned, loose or mayneed lubricant

b. Loose key

a. Defective bearingb. Needs lubricationc. Loose on bearing supportd. Loose on shafte. Seals misalignedf . Foreign material inside bearingg. Worn bearingh. Fretting corrosion between inner race and shafti . Bearing not sitting on flat surface

j . Excessive belt tension

a. Bentb. Undersized

a. Noisy motor bearingsb. Single phasing a three phase motorc. Low voltage

a. Impeller set screwsb. Bearing set screwsc. Drive component set screwsd. Fan mounting boltse. Bearing boltsf . Motor bolts

LUBRICATION

RECOMMENDED SKF GREASES FOR SKF BEARINGSFixed Pillow Block - LGMT2 Fans running below 80 c (176 f)Split Pillow Block - LGMT3 Fans running below 80 c (176 f)Fans Running Above 80 c thru 150 c - LGHT3

RELUBRICATION SCHEDULE (MONTHS)*Ball Bearing Pillow Blocks

Spherical Roller Bearings - Solid Pillow Blocks

1. Lubricate with a multi-purpose roller bearing NLGI grade 2 grease having rust inhibitors, anti-oxidantadditives, and a minimum oil viscosity of 500 SSU at 100 F. Some additives.

2. Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to avoidcorrosion.

1. Lubricate with a high quality NLGI No. 2 or No.3 multi purpose ball bearing grease having rustinhibitors and anti-oxidant additives.

2. Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to avoidcorrosion.

*Suggested initial greasing interval - relubricate while running, if safety permits, until some purgingoccurs at seals. Adjust lubrication frequency depending on condition of purged grease. Hours ofoperation, temperature, and surrounding conditions will affect the relubrication frequency required.

Some grease having these properties are:

Shell - Alvania EP No.2 Gulf - Gulfcrown No. 2

Mobil - Mobilux Ep2 American - Amolith No. 2

Texaco - Molytex No.2

Some grease having these properties are: American - Rykon No.2 Mobil - Mobilgrease 28 Texaco - Molytex Ep2 grease

smoke stair or elevator press fan

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