Greenheck Fan BDF User Manual

®

PN 458341

Model BDF

Belt Drive Duct Fan

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting
to assemble, install, operate or maintain the product described. Protect yourself and others by
observing all safety information. Failure to comply with instructions could result in personal injury
and/or property damage!

Model BDF
Belt Drive Duct Fan

Model BDF is a belt drive duct supply, exhaust or return air fan. These
fans are specically designed for inline applications. Performance
capabilities range up to 15,000 cfm (25,500 m3/hr) and up to 3.0 in. wg
(747 Pa) of static pressure. BDF fans are available in seven sizes with
nominal wheel diameter ranging from 8 to 20 inches (203 to 508 mm)
(080 - 200 unit sizes). Each fan shall bear a permanently afxed
manufacture’s engraved metal nameplate containing the model
number and individual serial number.

General Safety Information

Only qualied personnel should install this fan.
Personnel should have a clear understanding of
these instructions and should be aware of general
safety precautions. Improper installation can result
in electric shock, possible injury due to coming in
contact with moving parts, as well as other potential
hazards. Other considerations may be required if
seismic activity is present. If more information is
needed, contact a licensed professional engineer
before moving forward.

DANGER

Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in re, shock or serious injury.

CAUTION

When servicing the fan, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.

CAUTION

Precaution should be taken in explosive
atmospheres.

1. Follow all local electrical and safety codes, as
well as the National Electrical Code (NEC) and
the National Fire Protection Agency (NFPA),
where applicable. Follow the Canadian Electric
Code (CEC) in Canada.

2. The rotation of the wheel is critical. It must be
free to rotate without striking or rubbing any
stationary objects.

3. Motor must be securely and adequately
grounded.

4. Do not spin fan wheel faster than max cataloged
fan RPM. Adjustments to fan speed signicantly
effects motor load. If the fan RPM is changed,
the motor current should be checked to make
sure it is not exceeding the motor nameplate
amps.

5. Do not allow the power cable to kink or come
in contact with oil, grease, hot surfaces
or chemicals. Replace cord immediately if
damaged.

6. Verify that the power source is compatible with
the equipment.

7. Never open access doors to a duct while the fan
is running.

Model BDF • Belt Drive Duct Fan

1

®

Receiving

Upon receiving the product check to make sure all
items are accounted for by referencing the bill of lading
to ensure all items were received. Inspect each crate
for shipping damage before accepting delivery. Notify
the carrier if any damage is noticed. The carrier will
make notication on the delivery receipt acknowledging
any damage to the product. All damage should be
noted on all the copies of the bill of lading which
is countersigned by the delivering carrier. A Carrier
Inspection Report should be lled out by the carrier
upon arrival and reported to the Trafc Department.
If damaged upon arrival, le a claim with carrier. Any
physical damage to the unit after acceptance is not the
responsibility of Greenheck Fan Corporation.

Unpacking

Verify that all required parts and the correct quantity
of each item have been received. If any items are
missing, report shortages to your local representative
to arrange for obtaining missing parts. Sometimes it
is not possible that all items for the unit be shipped
together due to availability of transportation and truck
space. Conrmation of shipment(s) must be limited to
only items on the bill of lading.

Handling

Move fan to desired location and determine position
of access panels and motor. Make sure inlet and
outlet have at least 2 times the wheel diameter
(duct diameter) before any obstructions like an elbow
or transition. Attach the fan to a suitable framework
as specified, (hanging or base vibration isolators are
recommended). See chart 1 on page 3 for physical
dimensions (figure 1) and chart 3 on page 3 for
dimensions of vibration isolators (figure 3).

’

The motor
checked for compatibility to supply voltage prior
to final electrical connection. Supply wiring may be
routed through knockouts which are provided on
the top and bottom of each fan housing. Provide
adequate wiring to permit the access doors to open
for servicing. Wiring should be secured inside the fan
to prevent interference with the drive components. All
wiring must conform to local and national codes.

s amperage and voltage ratings must be

Storage

Fans are protected against damage during shipment. If
the unit cannot be installed and operated immediately,
precautions need to be taken to prevent deterioration
of the unit during storage. The user assumes
responsibility of the fan and accessories while in
storage. The manufacturer will not be responsible
for damage during storage. These suggestions are
provided solely as a convenience to the user.

Indoor

The ideal environment for the storage of fans and
accessories is indoors, above grade, in a low humidity
atmosphere which is sealed to prevent the entry of
blowing dust, rain or snow. Temperatures should be
evenly maintained between 30° to 110°F (-1° to 43°C)
(wide temperature swings may cause condensation

and “sweating” of metal parts). All accessories must be
stored indoors in a clean, dry atmosphere.

Remove any accumulations of dirt, water, ice or snow
and wipe dry before moving to indoor storage. To
avoid “sweating” of metal parts allow cold parts to
reach room temperature. To dry parts and packages
use a portable electric heater to get rid of any moisture
buildup. Leave coverings loose to permit air circulation
and to allow for periodic inspection.

The unit should be stored at least 3 in. (89 mm) off the
floor on wooden blocks covered with moisture proof
paper or polyethylene sheathing. Aisles between parts
and along all walls should be provided to permit air
circulation and space for inspection.

Outdoor

Fans designed for outdoor applications may be stored
outdoors, if absolutely necessary. Roads or aisles for
portable cranes and hauling equipment are needed.

The fan should be placed on a level surface to prevent
water from leaking into the fan. The fan should be
elevated on an adequate number of wooden blocks so
that it is above water and snow levels and has enough
blocking to prevent it from settling into soft ground.
Locate parts far enough apart to permit air circulation,
sunlight and space for periodic inspection. To minimize
water accumulation, place all fan parts on blocking
supports so that rain water will run off.

Do not cover parts with plastic lm or tarps as these
cause condensation of moisture from the air passing
through heating and cooling cycles.

Fan wheels should be blocked to prevent spinning
caused by strong winds.

Inspection and Maintenance During
Storage

While in storage, inspect fans once per month. Keep a
record of inspection and maintenance performed.

If moisture or dirt accumulations are found on parts,
the source should be located and eliminated. At each
inspection, rotate the wheel by hand ten to fteen
revolutions to distribute lubricant on motor. If paint
deterioration begins, consideration should be given to
touch-up or repainting. Fans with special coatings may
require special techniques for touch-up or repair.

Machined parts coated with rust preventive should be
restored to good condition promptly if signs of rust
occur. Immediately remove the original rust preventive
coating with petroleum solvent and clean with lint­free cloths. Polish any remaining rust from surface
with crocus cloth or ne emery paper and oil. Do not
destroy the continuity of the surfaces. Thoroughly wipe
clean with Tectyl® 506 (Ashland Inc.) or the equivalent.
For hard to reach internal surfaces or for occasional
use, consider using Tectyl® 511M Rust Preventive,

®

WD-40

or the equivalent.

Removing From Storage

As fans are removed from storage to be installed
in their nal location, they should be protected and
maintained in a similar fashion until the fan equipment
goes into operation.

2

Model BDF • Belt Drive Duct Fan

®

Chart 1: BDF Fan Dimensions

J

G

F

I

C

2

A

B

D

E

H

K*

D

E

H

B

2

C

F

J

G

I

A

Acces

C

A

A

C

BDF

Unit

Access

Panel

Filter

Box

Access

Panel

M*

M*

493⁄4

(1264)

547⁄8

(1394)

517⁄8

(1318)

639⁄16

(1614)

621⁄16

(1576)

753⁄8

(1915)

851⁄4

(2165)

Approximate

Weight Material

Filter

Fan

Box

71

32

(32)

(15)

92

42

(42)

(19)

107

52

(49)

(24)

144

70

(65)

(32)

223

307

565

97

(44)

134

(61)

174

(79)

(101)

(139)

(256)

Thickness

20 gauge

(.912 mm)

Unit

A B

Size

1

⁄4

181⁄2

23

80

(591)

(470)

1

⁄4

211⁄4

24

90

(616)

(540)

1

⁄4

223⁄4

26

100

(667)

(578)

271⁄4

33

120

(838)

(692)

3

⁄4

325⁄8

34

150

(883)

(829)

1

⁄4

413⁄4

40

180

(1022)

(1060)

1

⁄4

491⁄4

50

200

(1276)

(1251)

All dimensions in inches (millimeters) and weight is shown in pounds (kilograms). *May be greater depending on motor. **Weight shown
is largest cataloged Open Drip Proof motor.

C D E F G H I J K*

157⁄8

153⁄16

(403)

183⁄4

(476)

203⁄4

(527)

223⁄4

(578)

273⁄4

(705)

313⁄4

(806)

393⁄4

(1010)

(386)

181⁄4

(464)

193⁄4

(502)

241⁄8

(613)

285⁄8

(727)

371⁄2

(953)

451⁄8

(1146)

1211⁄16

(322)

157⁄8

(403)

177⁄8

(454)

197⁄8

(505)

237⁄8

(606)

277⁄8

(708)

36

(914)

93⁄4

87⁄8

1

(248)

(225)

121⁄4

101⁄2

(311)

133⁄4

(349)

16

(406)

191⁄8

(486)

221⁄2

(572)

231⁄8

(587)

(267)

117⁄8

(302)

133⁄8

(340)

163⁄8

(416)

187⁄8

(479)

251⁄4

(614)

(25)

1

(25)

1

(25)

1

(25)

11⁄2

(38)

11⁄2

(38)

11⁄2

(38)

53⁄8

(137)

63⁄4

(171)

73⁄8

(187)

77⁄8

(200)

97⁄8

(251)

101⁄2

(

267

121⁄2

(318)

)

41⁄4

(108)

41⁄2

(114)

41⁄2

(114)

55⁄8

(143)

63⁄4

(171)

95⁄8

(244)

13

(330)

Chart 2: Filter Option Dimensions

BDF

*K B C D E F G H

Size

3

⁄4

181⁄2

157⁄8

153⁄16

1211⁄16

(322)

157⁄8

(403)

177⁄8

(454)

197⁄8

(505)

237⁄8

(604)

277⁄8

(708)

36

(914)

93⁄4

(248)

121⁄4

(311)

133⁄4

(349)

16

(406)

191⁄8

(486)

221⁄2

(572)

231⁄8

(587)

Figure 1:
BDF Dimensions

Chart 3: Vibration Isolator Dimensional Data

Unit Size A C M*

3

⁄4

80

90

100

120

150

180

200

All dimensions in inches (mm). M* applies to optional filter box only.

20

(527)

3

21

(552)

3

23

(603)

1

30

(775)

32

(813)

3

37

(949)

3

47

(1203)

⁄4

⁄4

⁄2

⁄8

⁄8

2211⁄16

(576)

255⁄8

(651)

271⁄8

(689)

315⁄8

(803)

35

(889)

44

(1118)

511⁄2

(1308)

265⁄16

(668)

301⁄2

(775)

252⁄5

(645)

307⁄16

(773)

271⁄8

(689)

3415⁄16

(887)

36

(914)

49

80

(1264)

(470)

(403)

7

⁄8

211⁄4

54

90

(1394)

(540)

7

⁄8

223⁄4

51

100

(1318)

(578)

9

⁄16

271⁄4

63

120

(1614)

(692)

1

⁄16

325⁄8

62

150

(1576)

(829)

3

⁄8

413⁄4

75

180

(1915)

(1060)

1

⁄4

491⁄4

85

200

(2165)

All dimensions in inches (mm). *K is length of fan and filter box combined.

(1251)

183⁄4

(476)

203⁄4

(527)

223⁄4

(578)

273⁄4

(705)

313⁄4

(606)

393⁄4

(1010)

(386)

181⁄4

(464)

193⁄4

(502)

241⁄8

(613)

285⁄8

(727)

371⁄2

(953)

481⁄8

(1222)

87⁄8

(225)

101⁄2

(267)

117⁄8

(302)

133⁄8

(340)

163⁄8

(416)

187⁄8

(479)

251⁄4

(641)

1

(25)

1

(25)

1

(25)

11⁄2

(38)

1

(25)

11⁄2

(38)

11⁄2

(38)

Filter

Size

16 x 20

(406 x 508)

20 x 25

(508 x 635)

20 x 20

(508 x 508)

12 x 25

(533 x 635)

16 x 20

(406 x 508)

20 x 25

(508 x 635)

16 x 25

(406 x 635)

Filter

Quantity

2

2

2

4

8

6

12

Figure 2:

Figure 3:
Vibration Isolator Dimensions

Model BDF • Belt Drive Duct Fan

BDF Filter Dimensions

3

®

Pre Start-Up Checks

WRONGWRONGWRONGCORRECT

G

C

l

o

c

k

w

i

s

e

WRONGWRONGWRONGCORRECT

C

l

o

c

k

w

i

s

e

WRONGWRONGWRONGCORRECT

C

l

o

c

k

w

i

s

e

Belt Span

Deection =

Belt Span

64

Cl

o

c

k

w

i

s

e

AIRFLOW

R

O

T

A

T

O

I

N

AIRFLOW

R

O

T

A

T

O

I

N

AIRFLOW

R

O

T

A

T

O

I

N

1. Check all fasteners for tightness. The wheel
should rotate freely and not rub on the fan
panel venturi. Turn the fan on momentarily to
check for unusual vibration or noise. Do not
run the fan more than a few seconds without
being connected to the system for which it was
designed. Motor overloading and burnout may
result from lack of system static pressure.

2. Inlet and discharge collars are provided for duct
connection. The inlet panel is removable for
attaching optional filter box accessory.

3.

Wheel Rotation: Direction of wheel rotation

is critical. Check wheel rotation by momentarily
energizing the unit. Improper rotation will result
in reduced airflow and pressure capabilities.
Rotation is always in the same direction as
airflow at the outlet. See housing and wheel
examples in figure 4.

WARNING

Correct direction of wheel rotation is critical.
Reversed rotation will result in poor air
performance, motor overloading and possible
burnout.

Vibration Isolators: After fan is moved to

4.
desired location, punch out the four knock-out
holes which are located on the unit top and
bottom panels. Assemble the brackets to the
unit according to the appropriate drawings
on page 3 and refer to respective parts list on
page 7. Make certain all connectors are tight
and that all washers are in.

5 If adjustments are made, it is very important

to check the pulleys for proper alignment.
Misaligned pulleys lead to excessive belt wear,
vibration, noise and power loss. (See figure 5)

6. For all BDF Fans: Belt tension can be
adjusted by loosening four fasteners (marked
“R”, figure 6) on the drive frame. The motor plate
slides on the slotted adjusting arms (see figure

17). Belt tension should be adjusted to allow
1/64 inch of deflection per inch of belt span.
For example, a 15 inch belt span should have
15/64 inch (or about 1/4 inch) of deflection with
moderate thumb pressure at mid-point between
pulleys (See figure 7). Overtightening will cause
excessive bearing wear and noise. Too little
tension will cause slippage at startup and
uneven wear.

Figure 5

4

Model BDF • Belt Drive Duct Fan

Figure 4:
Wheel Rotation Guide

R

NOTE:
Identical
fasteners on
opposing
side must
also be
loosened.

Figure 6

Figure 7

®

7. The adjustable motor pulley is factory set for
the RPM specified. Speed can be increased by
closing or decreased by opening the adjustable
motor sheave. Two groove variable pitch pulleys
must be adjusted an equal number of turns open
or closed. Any increase in speed represents a
substantial increase in the horsepower required
by a unit. Motor amperage should always be
checked to avoid serious damage to the motor
when speed is varied.

Operation: BDF

1. Before starting up or operating fan, check all
fasteners for tightness. In particular, check
the setscrews in wheel hub (and pulleys, if
applicable).

2. While in the OFF position or before connecting
the fan to power, turn the fan wheel by hand
to be sure it is not striking the venturi or any
obstacle.

3. Start the fan and shut it off immediately to check
rotation of the wheel with directional arrow in the
motor compartment, see gure 4.

4. When the fan is started, observe the operation
and check for any unusual noises.

5. With the system in full operation and all
ductwork attached, measure current input to the
motor and compare with the nameplate rating to
determine if the motor is operating under safe
load conditions.

6. Keep inlets and approaches to fan clean and
free from obstruction.

Inspection: BDF

Inspection of the fan should be conducted at the
rst 30 minute and 24 hour intervals of satisfactory
operation.

30 Minute Interval

Inspect bolts, setscrews and motor mounting bolts.
Adjust and tighten as necessary.

24 Hour Interval

Check all internal components and inspect belt
alignment and tension. Adjust and tighten as
necessary.

Maintenance: BDF

Installation and maintenance are to be performed
only by qualied personnel who are familiar
with local codes and regulations and who are
experienced with this type of equipment.

Motor maintenance is generally limited to cleaning
and lubrication (where applicable). Cleaning should
be limited to exterior surfaces only. Removing dust
buildup on motor housing ensures proper motor
cooling.

Greasing of motors is only intended when ttings
are provided. Many fractional horsepower motors
are permanently lubricated and should not be
lubricated after installation. Motors supplied with
grease ttings should be greased in accordance
with manufacturers’ recommendations. Where
motor temperatures do not exceed 104°F (40°C),
the grease should be replaced after 2,000 hours of
running time as a general rule.

Wheels require very little attention when moving
clean air. Occasionally, oil and dust may accumulate
causing imbalance. When this occurs the wheel and
housing should be cleaned to ensure smooth and
safe operation.

All fasteners should be checked for tightness each
time maintenance checks are performed prior to
restarting unit.

A proper maintenance program will help these units
deliver years of dependable service.

WARNING

Always disconnect, lock and tag power source
before servicing. Failure to disconnect power
source can result in re, shock or serious injury.

CAUTION

Uneven cleaning of the wheel will produce an out
of balance condition that will cause vibration in the
fan.

WARNING

This unit should be made non-functional when
cleaning the wheel or housing (fuses removed,
disconnect locked off).

WARNING

The fan has been checked for mechanical noises at
the factory prior to shipment. If mechanical noise
should develop, suggested corrective actions are
offered in the Troubleshooting section.

IMPORTANT

Over tightening will cause excessive bearing wear
and noise. Too little tension will cause slippage at
startup and uneven wear.

IMPORTANT

Adjust (tighten) belt tension after the rst 24-48
hours of operation.

Belt/Bearing Maintenance BDF Unit

1. Belts tend to stretch after a period of time. They
should be checked periodically for wear and
tightness. When replacing belts, use the same
type as supplied with the unit.

2. Matched belts should always be used on units
with multi-groove pulleys.

3. For belt replacement, loosen the tensioning
device enough to allow removal of the belt by
hand. Do not force belts on or off. This may
cause cords to break, leading to premature belt
failure.

Model BDF • Belt Drive Duct Fan

5

®

4. Once installed, adjust belts as shown in
“Pre-Starting Checks.”

5. Shaft bearings can be classied in two
groups: relubricating and non-relubricating.
Bearings on sizes 80 through 180 are factory
lubricated and require no further lubrication
under normal use (between -20°F and 180°F
in a relatively clean environment). Bearings on
size 200 are relubricatable. These bearings
will require frequent lubrication. Caution
should be employed to prevent overpacking or
contamination.

6. Grease ttings should be wiped clean. The unit
should be in operation while lubricating. Extreme
care should be used around moving parts.

7. Grease should be pumped in very slowly until a
slight bead forms around the seal. A high grade
lithium base grease should be used.

Recommended Relubrication
Frequency in Months

NOTE: If unusual environment conditions exist
(extreme temperature, moisture or contaminants)
more frequent lubrication is required.

A good quality lithium base grease, conforming to
NLGI Grade 2 consistency, such as those listed here
may be used.

Table 1: Suggested Fan Bearing Greasing Intervals

Interval (months) Type of Service

1 to 3

3 to 6

6 to 12

12 to 18

Table 2: Grease Manufacturers

Manufacturer Grease (NLGI #2)

U.S. Electric Motors Grease No. 83343

Chevron U.S.A. Inc Chevron SRI Grease #2

Mobil Oil Corporation

Texaco, Inc.

Amoco Oil Co. Rykon Premium #2

Exxon Unirex N2

Shell B Shell Alvania #2

Heavy duty in dirty, dusty locations;
high ambient temperatures; moisture
laden atmosphere; vibration.

12 to 24 hours per day, heavy duty,
or if moisture is present

8 to 16 hours per day in clean,
relatively dry atmosphere

Infrequent operation or light duty in
clean atmosphere

Mobilith

Mobil 532

Premium BRB #2

Texaco Multifak #2

Troubleshooting

WARNING: Before taking any corrective action, make certain unit is not capable of operation during
repairs.

PROBLEM CAUSE CORRECTIVE ACTION

Clean all dirt off wheel. Check wheel balance, rebalance in place if
necessary.

Center wheel on inlet.

Check system: Proper operation of backdraft or control dampers,
obstruction in ductwork, clean dirty lters.

Excessive noise

or vibration

Reduced airow

Wheel unbalance

Bad bearings Replace.

Belts too tight or too loose Adjust tension, see gure 7.

Wheel improperly aligned and
rubbing

Loose drive or motor pulleys Align and tighten. See “Pre-Starting Checks”, see page 4-5.

Foreign objects in wheel or housing Remove objects, check for damage or unbalance.

System resistance too high

Unit running backwards Correct as shown in gure 4.

Excessive dirt buildup on wheels Clean wheel.

Improper wheel alignment Center wheel on inlets. See “Pre-Starting Checks”, see page 4-5.

6

Model BDF • Belt Drive Duct Fan

®

Isolator Parts List

Hanging Isolator

Base Isolator

7

5

6

Base fastener
by installer

5

Unit
side panel

7

5

Unit
Side
Panel

2

3

2

5

5

2

NOTE:
Top bracket is reversible
for mounting unit 90

o

from indicated.
(SQ & BSQ only)

2

6

5

5

4

1

5

4

3

6

8

2

6

1

4

6

5

7

8

7

5

6

1

5

2

1

Hanging Isolator

6

5

Unit
side panel

7

5

Unit
Side
Panel

2

3

2

5

5

2

NOTE:
Top bracket is reversible
for mounting unit 90

o

from indicated.
(SQ & BSQ only)

4

1

5

4

3

6

8

2

6

1

4

6

5

7

8

7

5

6

1

5

2

Hanging Isolator

7

5

Unit
Side
Panel

2

3

2

5

5

2

NOTE:
Top bracket is reversible
for mounting unit 90

o

from indicated.
(SQ & BSQ only)

2

6

1

4

6

5

7

8

7

5

6

1

5

Hanging Isolator

Unit
Side
Panel

2

3

2

5

2

o

2

4

6

5

7

8

7

5

6

1

5

STANDING SUPPORT ISOLATOR HANGING SUPPORT ISOLATOR

No. Qty. Description BDF-80 thru 150 BDF-180 thru 200 No. Qty. Description BDF-80 thru 150 BDF-180 thru 200

Cadium plated

1 8

hex head bolts

Cadium plated

2 8

hex nuts

Cadium plated

3 4

hex head bolts

St. mount bracket

4 8

w/2 - 7/16 in.
holes

Cadium plated

5 20

washer

Cadium plated

6 12

lock washer

Cadium plated

7 4

washer

Neoprene or

8 4

Spring Isolator

3/8 in. - 16 x 1 in.

3/8 in. - 16 3/8 in. - 16 2 16

5/16 in. - 18 x 1 in. 3/8 in. - 16 x 1 in. 3 4

3/16 in. 1/4 in. 4 4

7/8 in. O.D x 3/8 in.
I.D. x 1/16 in.

3/8 in. 3/8 in. 6 12

1-3/8 in. O.D x 9/16
in. I.D. x 3/32 in.

Reference appropriate table below for
replacement Isolator(s)

3/8 in. - 16 x 1
1/4 in.

7/8 in. O.D x 3/8 in.
I.D. x 1/16 in.

1-3/8 in. O.D x 9/16
in. I.D. x 3/32 in.

Cadium plated hex

1 8

head bolts

Cadium plated hex
nuts

St. mount bracket
w/1 - 1/4 in hole

St. mount bracket
w/2 - 7/16 in. holes

Cadium plated

5 24

washer

Cadium plated lock
washer

Cadium plated

7 12

washer

Neoprene or Spring

8 4

Isolator

REPLACEMENT SPRING ISOLATOR(S)

MODEL FAN SIZE

BDF 80-90 100-200 150-180 200

BASE MOUNT FDS-1-70 GREEN FDS 1-120 GRAY FDS-1-220 BROWN

HANGING SH-1-70 GREEN SH-1-125 GRAY SH-1-245 BROWN SH-1-370 ORANGE

FDS-1-370

ORANGE

3/8 in. - 16 x 1 in.

3/8 in. - 16 x 1 1/4
in.

3/8 in. - 16 3/8 in. - 16

3/16 in. 1/4 in.

3/16 in. 1/4 in.

7/8 in. O.D x 3/8 in.
I.D. x 1/16 in.

7/8 in. O.D x 3/8 in.
I.D. x 1/16 in.

3/8 in. 3/8 in.

1-3/8 in. O.D x 9/16
in. I.D. x 3/32 in.

1-3/8 in. O.D x 9/16
in. I.D. x 3/32 in.

Reference appropriate table below for
replacement Isolator(s)

REPLACEMENT NEOPRENE ISOLATOR(S)

MODEL FAN SIZE

BDF 80-100 120-150 180-200

BASE MOUNT R-1 GREEN R-2 BLACK R-2 RED

HANGING 40DUR BLACK 50DUR BLACK 50DUR BLACK

Model BDF • Belt Drive Duct Fan

7

®

WHEEL

SHA

FT

SCROLL

M

OTO

R

ACCE

SS

PANEL

BEL

T

MOTOR
PULLE

Y

DRIVE
S

UPPOR

T

SHA

FT

PULLE

Y

BEARIN

G

HOUSIN

G

ISOLATO

R

Parts List

NOTE

Each fan bears a manufacturer’s nameplate with model number and serial number embossed. This information will
assist the local Greenheck representative and the factory in providing service and replacement parts. Before taking any
corrective action, make certain unit is not capable of operation during repairs.

CAUTION

A fan manufactured with an explosion resistant motor does not certify the entire unit to be explosion proof. Refer to UL
Listing Mark for the fans approved usage.

Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the purchase date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.

Greenheck Catalog BDF provides additional information describing
the equipment, fan performance, available accessories, and
specication data.

AMCA Publication 410-96, Safety Practices for Users and
Installers of Industrial and Commercial Fans, provides additional
safety information. This publication can be obtained from AMCA
International, Inc. at: www.amca.org.

Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website: www.greenheck.com

8 458341 • Model BDF • Belt Drive Duct Fan, Rev. 5, September 2008 Copyright 2008 © Greenheck Fan Corp