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 specifically 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 affixed
manufacture’s engraved metal nameplate containing the model
number and individual serial number.
General Safety Information
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.
Only qualified 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.
3. Motor must be securely and adequately
grounded.
4. Do not spin fan wheel faster than max cataloged
fan RPM. Adjustments to fan speed significantly
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.
DANGER
Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in fire, shock or serious injury.
CAUTION
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.
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.
7. Never open access doors to a duct while the fan
is running.
Model BDF • Belt Drive Duct Fan
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1
Chart 1: BDF Fan Dimensions
Approximate
Weight
Unit
Size
Material
A
B
C
D
E
F
G
H
I
J
K*
Filter Thickness
Box
Fan
231
⁄
4
181
⁄
2
157
(403)
⁄
8
153⁄16 1211⁄16
(386) (322)
93
(248)
⁄
4
87
⁄
8
1
53
⁄
8
41⁄4
493⁄4
71
(32)
32
(15)
80
(591)
241
(616)
261
(470)
211
(540)
223
(578)
271
(692)
325
(829)
413
(225) (25) (137)
101 63
(267) (25) (171)
117 73
(302) (25) (187)
133 77
(340) (25) (200)
163 11⁄2 97
(416) (38) (251)
(108) (1264)
41⁄2 547⁄8
(114) (1394)
41⁄2 517⁄8
(114) (1318)
55⁄8 639⁄16
(143) (1614)
63⁄4 621⁄16
⁄4
⁄4
183
(476)
⁄4
181 157
(464) (403)
193 177
(502) (454)
241 197
(613) (505)
285 237
(727) (606)
371 277
(953)
451
⁄
4
⁄
8
121
(311)
⁄4
⁄
2
1
⁄4
92
(42)
42
(19)
90
⁄4
⁄4
203
(527)
⁄4
⁄4
⁄8
133
(349)
⁄4
⁄8
1
⁄
8
107
(49)
52
(24)
100
120
150
180
200
(667)
33
(838)
⁄4
223
(578)
⁄4
⁄8
⁄8
16
(406)
⁄8
1
⁄8
144
(65)
70
(32)
20 gauge
(.912 mm)
343
(883)
⁄4
⁄
8
273
(705)
⁄4
⁄8
⁄8
191
(486)
⁄8
⁄
8
⁄8
223
97
(44)
(171) (1576) (101)
95⁄8 753⁄8
307
(244) (1915) (139)
851⁄4
565
(330) (2165) (256)
401
⁄4
⁄4
313
⁄4
⁄2
⁄8
221
(572)
⁄2
187
(479) (38)
⁄8
11⁄2 101
⁄2
134
(61)
(1022) (1060) (806)
(708)
(
267
)
501 491 393
(1276) (1251) (1010) (1146) (914)
⁄4
⁄4
⁄4
⁄
8
36
231
(587)
⁄
8
251 11⁄2 121
(614) (38) (318)
⁄4
⁄2
13
174
(79)
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.
Chart 2: Filter Option Dimensions
D
A
BDF
Size
Filter
Size
Filter
Quantity
*K
B
C
D
E
F
G
H
B
493⁄4 181⁄2 157⁄8 153⁄16 1211⁄16 93⁄4 87⁄8
1
16 x 20
80
2
2
2
(1264) (470) (403) (386) (322) (248) (225) (25) (406 x 508)
547⁄8 211⁄4 183⁄4 181⁄4 157⁄8 121⁄4 101⁄2
(1394) (540) (476) (464) (403) (311) (267) (25) (508 x 635)
517⁄8 223⁄4 203⁄4 193⁄4 177⁄8 133⁄4 117⁄8
(1318) (578) (527) (502) (454) (349) (302) (25) (508 x 508)
639⁄16 271⁄4 223⁄4 241⁄8 197⁄8 16 133⁄8 11⁄2
(1614) (692) (578) (613) (505) (406) (340) (38) (533 x 635)
621⁄16 325⁄8 273⁄4 285⁄8 237⁄8 191⁄8 163⁄8
(1576) (829) (705) (727) (604) (486) (416) (25) (406 x 508)
753⁄8 413⁄4 313⁄4 371⁄2 277⁄8 221⁄2 187⁄8 11⁄2
(1915) (1060) (606) (953) (708) (572) (479) (38) (508 x 635)
851⁄4 491⁄4 393⁄4 481⁄8 36 231⁄8 251⁄4 11⁄2
(2165) (1251) (1010) (1222) (914) (587) (641) (38) (406 x 635)
E
C
I
1
20 x 25
20 x 20
12 x 25
16 x 20
20 x 25
16 x 25
90
1
100
120
150
180
200
2
G
J
4
H
F
1
8
Figure 1:
BDF Dimensions
6
Chart 3: Vibration Isolator Dimensional Data
12
All dimensions in inches (mm). *K is length of fan and filter box combined.
Unit Size
80
A
203
(527)
213
(552)
233
(603)
301
(775)
32
(813)
373
C
2211⁄16
(576)
255
(651)
271
(689)
315
(803)
35
M*
265⁄16
⁄
4
(668)
D
⁄4
⁄
8
301
⁄
2
90
(775)
K*
⁄4
⁄
8
252
⁄
5
100
120
150
180
200
(645)
307⁄16
(773)
⁄
2
⁄
8
E
271
⁄
8
B
(889)
44
(1118)
511
(689)
3415⁄16
(887)
36
2
⁄
8
C
I
(949)
473
(1203)
⁄
8
⁄
2
H
(1308)
(914)
All dimensions in inches (mm). M* applies to optional filter box only.
G
M*
F
A
C
Figure 2:
BDF Filter Dimensions
J
Filter
Box
l
BDF
Unit
Access
Pane
Access
Panel
M*
A
Figure 3:
Vibration Isolator Dimensions
C
Model BDF • Belt Drive Duct Fan
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®
Pre Start-Up Checks
WARNING
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.
Correct direction of wheel rotation is critical.
Reversed rotation will result in poor air
performance, motor overloading and possible
burnout.
4. Vibration Isolators: After fan is moved to
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)
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.
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.
N
O
AIRFLOW
AIRFLOW
N
O
R
NOTE:
Figure 4:
Wheel Rotation Guide
Identical
fasteners on
opposing
side must
also be
CORRECT
WRONG
loosened.
Figure 6
WRONG
WRONG
Belt Span
Deflection =
Belt Span
64
Figure 7
Figure 5
4
Model BDF • Belt Drive Duct Fan
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®
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.
Maintenance: BDF
Installation and maintenance are to be performed
only by qualified 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.
Operation: BDF
Greasing of motors is only intended when fittings
are provided. Many fractional horsepower motors
are permanently lubricated and should not be
lubricated after installation. Motors supplied with
grease fittings 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.
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.
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.
3. Start the fan and shut it off immediately to check
rotation of the wheel with directional arrow in the
motor compartment, see figure 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.
A proper maintenance program will help these units
deliver years of dependable service.
6. Keep inlets and approaches to fan clean and
free from obstruction.
WARNING
Always disconnect, lock and tag power source
before servicing. Failure to disconnect power
source can result in fire, shock or serious injury.
Inspection: BDF
Inspection of the fan should be conducted at the
first 30 minute and 24 hour intervals of satisfactory
operation.
CAUTION
Uneven cleaning of the wheel will produce an out
of balance condition that will cause vibration in the
fan.
30 Minute Interval
Inspect bolts, setscrews and motor mounting bolts.
Adjust and tighten as necessary.
WARNING
24 Hour Interval
Check all internal components and inspect belt
alignment and tension. Adjust and tighten as
necessary.
This unit should be made non-functional when
cleaning the wheel or housing (fuses removed,
disconnect locked off).
WARNING
Belt/Bearing Maintenance BDF Unit
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.
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.
IMPORTANT
2. Matched belts should always be used on units
with multi-groove pulleys.
Over tightening will cause excessive bearing wear
and noise. Too little tension will cause slippage at
startup and uneven wear.
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.
IMPORTANT
Adjust (tighten) belt tension after the first 24-48
hours of operation.
Model BDF • Belt Drive Duct Fan
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®
4. Once installed, adjust belts as shown in
“Pre-Starting Checks.”
Table 1: Suggested Fan Bearing Greasing Intervals
Interval (months)
Type of Service
5. Shaft bearings can be classified 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 fittings 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.
Heavy duty in dirty, dusty locations;
high ambient temperatures; moisture
laden atmosphere; vibration.
1 to 3
12 to 24 hours per day, heavy duty,
or if moisture is present
3 to 6
6 to 12
12 to 18
8 to 16 hours per day in clean,
relatively dry atmosphere
Infrequent operation or light duty in
clean atmosphere
Table 2: Grease Manufacturers
Manufacturer
U.S. Electric Motors
Chevron U.S.A. Inc
Grease (NLGI #2)
Grease No. 83343
Chevron SRI Grease #2
Mobilith
Mobil Oil Corporation
Texaco, Inc.
Mobil 532
Premium BRB #2
Texaco Multifak #2
Rykon Premium #2
Unirex N2
Recommended Relubrication
Frequency in Months
NOTE: If unusual environment conditions exist
(extreme temperature, moisture or contaminants)
more frequent lubrication is required.
Amoco Oil Co.
Exxon
Shell
B Shell Alvania #2
A good quality lithium base grease, conforming to
NLGI Grade 2 consistency, such as those listed here
may be used.
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.
Wheel unbalance
Bad bearings
Replace.
Belts too tight or too loose
Adjust tension, see figure 7.
Excessive noise
or vibration
Wheel improperly aligned and
rubbing
Center wheel on inlet.
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.
Check system: Proper operation of backdraft or control dampers,
System resistance too high
obstruction in ductwork, clean dirty filters.
Unit running backwards
Correct as shown in figure 4.
Reduced airflow
Excessive dirt buildup on wheels
Improper wheel alignment
Clean wheel.
Center wheel on inlets. See “Pre-Starting Checks”, see page 4-5.
6
Model BDF • Belt Drive Duct Fan
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Isolator Parts List
STANDING SUPPORT ISOLATOR
HANGING SUPPORT ISOLATOR
Unit
NOTE:
1
side panel
Top bracket is reversible
for mounting unit 90o
from indicated.
2
2
6
4
5
5
(SQ & BSQ only)
1
5
7
6
5
7
4
2
8
3
3
4
1
6
5
5
5
7
5
8
5
1
2
6
5
7
6
Unit
Side
Panel
2
Base fastener
by installer
5
6
2
No. Qty.
Description
BDF-80 thru 150 BDF-180 thru 200 No. Qty.
Description
BDF-80 thru 150
BDF-180 thru 200
Cadium plated
hex head bolts
3/8 in. - 16 x 1
1/4 in.
Cadium plated hex
head bolts
3/8 in. - 16 x 1 1/4
in.
1
2
3
8
8
4
3/8 in. - 16 x 1 in.
3/8 in. - 16
1
2
3
8
16
4
3/8 in. - 16 x 1 in.
3/8 in. - 16
Cadium plated
hex nuts
Cadium plated hex
nuts
3/8 in. - 16
3/8 in. - 16
1/4 in.
Cadium plated
hex head bolts
St. mount bracket
w/1 - 1/4 in hole
5/16 in. - 18 x 1 in. 3/8 in. - 16 x 1 in.
3/16 in.
St. mount bracket
w/2 - 7/16 in.
holes
St. mount bracket
w/2 - 7/16 in. holes
4
8
3/16 in.
1/4 in.
4
4
3/16 in.
1/4 in.
Cadium plated
washer
7/8 in. O.D x 3/8 in. 7/8 in. O.D x 3/8 in.
Cadium plated
washer
7/8 in. O.D x 3/8 in. 7/8 in. O.D x 3/8 in.
5
6
7
8
20
12
4
5
6
7
8
24
12
12
4
I.D. x 1/16 in.
3/8 in.
I.D. x 1/16 in.
3/8 in.
I.D. x 1/16 in.
I.D. x 1/16 in.
Cadium plated
lock washer
Cadium plated lock
washer
3/8 in.
3/8 in.
Cadium plated
washer
1-3/8 in. O.D x 9/16 1-3/8 in. O.D x 9/16
in. I.D. x 3/32 in. in. I.D. x 3/32 in.
Cadium plated
washer
1-3/8 in. O.D x 9/16 1-3/8 in. O.D x 9/16
in. I.D. x 3/32 in. in. I.D. x 3/32 in.
Neoprene or
Spring Isolator
Reference appropriate table below for
replacement Isolator(s)
Neoprene or Spring Reference appropriate table below for
Isolator
4
replacement Isolator(s)
REPLACEMENT SPRING ISOLATOR(S)
MODEL
FAN SIZE
BDF
80-90
100-200
150-180
200
FDS-1-370
ORANGE
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
REPLACEMENT NEOPRENE ISOLATOR(S)
MODEL
BDF
FAN SIZE
120-150
80-100
180-200
R-2 RED
BASE MOUNT
HANGING
R-1 GREEN
40DUR BLACK
R-2 BLACK
50DUR BLACK
50DUR BLACK
Model BDF • Belt Drive Duct Fan
7
®
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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.
SCROLL
M
OTOR
HOUSING
BEARING
WHEE
L
A
CCESS
P
A
NEL
SHAFT
ISOLATOR
BELT
M
OTOR
S
H
A
FT
D
R
I
V
E
PULLEY
PULL
E
Y
S
UPP
ORT
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.
AMCA Publication 410-96, Safety Practices for Users and
Greenheck Catalog BDF provides additional information describing
the equipment, fan performance, available accessories, and
specification data.
Installers of Industrial and Commercial Fans, provides additional
safety information. This publication can be obtained from AMCA
®
Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected] • Website: www.greenheck.com
8
458341 • Model BDF • Belt Drive Duct Fan, Rev. 5, September 2008
Copyright 2008 © Greenheck Fan Corp
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