Greenheck Fan Fan Model SFD User Manual

Part #455308  
Centrifugal Utility Fans  
®
Model SWB - Series 100, 200 and 300  
Models SFB and SFD  
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 SWB  
Model SWB  
Series 200  
Model SWB  
Series 100  
Model SFB  
Table of Contents  
Motor and Drive Installation  
(Units Shipped from Stock). . . . . . . . . . . . . . . . 2  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Affect of Installation on Performance . . . . . . . . . 3  
UL/cUL 762 - Restaurant Exhaust . . . . . . . . . . . . 4  
Pre-Starting Checks . . . . . . . . . . . . . . . . . . . . . .4-5  
Belt Drive Fan Maintenance . . . . . . . . . . . . . . . . . 6  
Bearing Lubrication Schedule . . . . . . . . . . . . . . . 6  
Motor Maintenance (Belt and Direct Drive). . . . . 6  
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . 8  
Model SFD  
Centrifugal Utility Fans  
1
®
 
Installation  
Affect of Installation on Performance  
Inspect the unit for any damage and report it to  
the shipper immediately. Also, check to see that all  
accessory items are accounted for.  
Restricted or unstable flow at the fan inlet can cause  
pre-rotation of incoming air or uneven loading of the  
fan wheel, yielding large system losses, increased  
sound levels and structural failure of the fan wheel.  
Free discharge or turbulent flow in the discharge  
ductwork will also result in system effect losses.  
Move the fan to the desired location and fasten  
securely through mounting holes provided in the base  
angles. The unit must be set level (shimming may be  
necessary). Flexible duct connections and vibration  
isolators should be used where noise is a factor.  
The examples below show the system layout and  
inlet and discharge configurations which can affect  
fan performance.  
The motor voltage and ampere rating must be  
checked for compatibility with the electrical supply  
prior to final electrical connection. Supply wiring to the  
fan must be properly fused, and conform to local and  
national electrical codes.  
Discharge Configurations  
The discharge is factory set as specified by customer  
order, however, it can be rotated to other discharge  
positions in the field if necessary. Removal of the  
housing bolts allows the discharge to be rotated to  
the clockwise positions below. For TAD, BD and BAD  
discharge positions, a portion of the frame angle must  
be removed.  
o
7
MAX.  
POOR  
FAIR  
GOOD  
Clockwise rotation shown. Counterclockwise  
discharge positions are a mirror image of those  
shown. Fan rotation is always specified from the  
drive side of the housing.  
FAIR  
POOR  
POOR  
Discharge Positions  
One  
Impeller  
Dia.  
Turning  
Varies  
Should be at least  
1/2 Impeller Dia.  
FAIR  
FAIR  
GOOD  
POOR  
CW BH  
CW BAU  
CW UB  
CW TAU  
POOR  
GOOD  
CW TH  
CW TAD  
CW DB  
CW BAD  
Not Greater than  
o
60 Including Angle  
FAIR  
POOR  
POOR  
Centrifugal Utility Fans  
3
®
 
Alignment of Pulleys and Belts  
Installation of UL/cUL 762 Listed  
Fans for Restaurant Exhaust  
Check pulleys and belts for proper alignment to avoid  
unnecessary belt wear, noise, vibration and power  
loss. Motor and drive shafts must be parallel and  
pulleys in line as shown below.  
The UL/cUL 762 listing for restaurant exhaust is  
available on Series 200 and 300 SWB fan model  
sizes 206 - 224 and 327 - 349 with a weatherhood.  
UL/cUL 762 fans are listed for a maximum operating  
temperature of 375°F (191°C) and includes an access  
door and 1 inch (25.4 mm) drain connection. An  
outlet guard is strongly recommended when the fan  
discharge is accessible. An upblast discharge is  
recommended. The fan discharge must be a minimum  
of 40 inches (1016 mm) above the roof line and the  
exhaust duct must be fully welded to a distance of  
18 inches (457 mm) above the roof surface.  
Series 200 & 300 SWB models  
are listed for grease removal  
(UL/cUL 762) File no. MH11745.  
Wrong  
Wrong  
Right  
Upblast Discharge  
The adjustable motor pulley is set at the factory for  
the fan RPM specified by the customer. Fan RPM can  
be increased by closing or decreased by opening the  
adjustable motor pulley. Multigroove variable pitch  
pulleys must be adjusted an equal number of turns  
open or closed. Any increase in fan speed represents  
a substantial increase in load on the motor.  
Optional Companion  
Flange  
40 in.**  
(1016 mm)  
Weatherhood  
3 Wheel  
Diameters  
18 in.*  
(457 mm)  
Duct  
from  
kitchen  
hood  
To avoid motor overheating and possible burnout,  
motor load amperes should always be checked and  
compared to nameplate rating when fan speed is  
increased.  
*Per NFPA 96 the duct  
must be of all-welded  
construction to a  
minimum distance of  
18 inches (457 mm)  
above the roof surface.  
**Per NFPA 96 the fan discharge must  
be a minimum of 40 in. (1016 mm)  
above the roof surface.  
This drawing is for dimensional information only. See  
the latest edition of NFPA 96 Standard for Ventilation  
Control and Fire Protection of Commercial Cooking  
Operations for detailed installation instructions,  
materials, duct connections and clearances.  
Wheels  
Wheels must rotate freely and not rub on the inlet  
venturi. Model SWB wheels overlap the inlet venturi as  
shown in Figure 1. Refer to the SWB fan wheel overlap  
and radial gap chart for proper dimensions.  
Models SFD and SFB wheels do not overlap the  
venturi, but have a gap between the inlet venturi  
and the wheel (Fig. 2). Wheel position is preset at  
the factory and the unit is test run. Wheel movement  
may occur during shipment or installation and wheel  
alignment may be necessary.  
Pre-Starting Checks  
WARNING  
Always disconnect power before working on or near  
a fan. Lock and tag the disconnect switch or breaker  
to prevent accidental power up.  
Overlap  
CAUTION  
Gap  
When servicing the fan, motor may be hot enough  
to cause pain or injury. Allow motor to cool before  
servicing.  
Radial  
Gap  
Wheel  
Wheel  
CAUTION  
Precaution should be taken in explosive  
atmospheres.  
Model SWB  
Model SFD or SFB  
Fig. 1  
Fig. 2  
Centrifugal Utility Fans  
4
®
 
On belt drive units, centering can be accomplished  
by (a) loosening the inlet cone bolts to move the inlet  
cone or by (b) loosening the bearings in order to  
move the shaft. Wheel and inlet cone overlap can be  
adjusted by loosening the wheel hub set screws and  
moving the wheel to the desired position. Tighten all  
fasteners and set screws securely and realign drive  
pulleys after adjustment.  
Wheel Rotation  
Rotation direction of the wheel is critical and incorrect  
rotation will result in reduced air performance,  
increased motor loading and possible motor burnout.  
Check wheel rotation by momentarily energizing the  
unit and noting if rotation is in the same direction as  
the airflow at the outlet and conforms to the rotation  
decal affixed to the unit.  
Approximate Wheel Clearance Dimensions  
NOTE  
Unit Size  
SWB  
SFD SFB  
Overlap Radial  
Tolerance Gap  
Models SFD and SFB units should be operated only  
when attached to the system for which they were  
designed. Without proper system static pressure,  
the motor could be overloaded.  
SWB SWB SWB  
Overlap  
Gap  
Gap  
SFD SFB Series Series Series  
100  
200  
300  
inches (mm)  
3
3
1
8 (10)  
8 (10)  
(13)  
6
7.5  
9
106 206  
107 207  
108 208  
1
1
1
1
1
(13)  
9
2
2
2
2
2
2
Wheels as viewed from the drive side:  
3
1
1
1
1
1
5
5
5
5
5
5
5
5
5
1
8 (10)  
(6)  
(4)  
(13)  
(13)  
(13)  
(13)  
(13)  
10 10 110 210  
4  
32  
32  
32  
32  
32  
32  
32  
32  
32  
2
Backward Inclined  
3
8 (10)  
(6)  
(6)  
(6)  
(6)  
(4)  
(4)  
(4)  
(4)  
(4)  
(4)  
(4)  
(4)  
12  
212  
113 213  
15 115 215  
116 216  
18 118 218  
20 120 220  
4  
4  
4  
4
7
(11)  
16  
1
(13)  
2
1
5
5
(13)  
(16)  
(16)  
(18)  
(19)  
2
3
3
3
3
1
5
5
8 (10)  
8 (10)  
8 (10)  
8 (10)  
(13)  
(16)  
(16)  
Airflow  
8
2
8
8
8
11  
22  
222  
124 224  
16  
3
4
3
3
3
(19)  
(19)  
(19)  
25  
27  
30  
4
7
1
3
3
3
3
(22)  
(24)  
(27)  
(6)  
(5)  
(5)  
(5)  
(5)  
(6)  
(8)  
(8)  
327  
330  
333 1116  
336 1316  
340 11⁄  
344 1716  
349 1916  
8
4  
16  
16  
16  
16  
4
15  
3
3
3
3
3
1
8 (10)  
8 (10)  
8 (10)  
8 (10)  
8 (10)  
(13)  
16  
4
(30)  
1
Forward Curved  
4 (32)  
4  
5
5
(37)  
16  
16  
(40)  
2
Airflow  
Airfoil  
Airflow  
Centrifugal Utility Fans  
5
®
 
Lubrication interval is based on 12 hour per  
day operation and maximum 160°F housing  
temperature. For 24 hour per day operation, the  
interval should be cut in half.  
Blower Maintenance (Belt Drive)  
Belts tend to stretch after a period of time. They  
should be periodically checked for tension and wear.  
When replacing belts, use the same type as supplied  
with the unit. Replacement of belts should  
be accomplished by loosening the tensioning  
“L-Bolts” so the belts may be removed by hand. Do  
not force belts on or off as this may cause breakage  
of cords and lead to premature belt failure.  
Lubricant should be added with the shaft rotating  
and until clean grease is seen purging from the  
bearing. The lubrication interval may be modified  
based on the condition of the purged grease. If  
bearing is not visible to observe purged grease,  
lubricate with number of shots indicated in chart  
for bore size.  
Belt tension should be adjusted to allow 1/64 in. of  
belt deflection per 1 in. of belt span. For example,  
a 16 in. belt span should have 16/64 in. or 1/4 in. of  
deflection with moderate thumb pressure at mid-point  
between the pulleys. (Fig. 3). Refer to Greenheck’s  
Product Application Guide, “Measuring Belt Tension”  
for additional information—FA/127-11 found online at  
For conditions including high temperatures,  
moisture, dirt or excessive vibration, consult the  
factory for a specific lubrication interval for your  
application.  
Lubricant should be a high quality lithium complex  
grease conforming to NLGI Grade 2. Factory  
recommends Mobilux EP-2.  
Belt Span  
Fig. 3  
The use of synthetic lubricants will increase  
lubrication intervals by approximately 3 times.  
In addition to lubricating the bearings at specified  
intervals, set screws in the bearing collars should be  
checked for tightness. A bearing collar which has  
loosened will cause premature failure of the fan shaft.  
Fasteners attaching the bearings to the drive frame  
should also be checked.  
Belt Span  
64  
Deflection =  
Motor Maintenance (Belt & Direct Drive)  
Shaft bearings are the most critical moving part of a  
fan. Therefore, special attention should be given to  
keeping the bearings clean and well lubricated. Proper  
lubrication provides for reduction in friction and  
wear, transmission and dissipation of heat, extended  
bearing life and prevention of rust.  
Motor maintenance is generally limited to cleaning  
and lubrication (where applicable). Cleaning should be  
limited to exterior surfaces only. Removing dust and  
grease buildup on the motor housing assures proper  
motor cooling. Use caution and do not allow water  
or solvents to enter the motor or bearings. Under no  
circumstances should motors or bearings be sprayed  
with steam, water or solvents.  
In order for a lubricant to fulfill these tasks, the proper  
grease applied at regular intervals is required. See the  
recommended bearing lubrication schedule below.  
Many fractional horsepower motors are permanently  
lubricated for life and require no further lubrication.  
Motors supplied with grease fittings should be  
greased in accordance with the manufacturer’s  
recommendations.  
If unusual conditions exist - temperatures below 32°F  
or above 200°F, moisture or contaminants - more  
frequent lubrication is required.  
Recommended Bearing Lubrication Schedule  
Relubrication Schedule in Months  
Wheel and Fastener Maintenance  
Standard Grease  
Wheels require very little attention when exhausting  
clean air, however, air heavily laden with grease or  
dirt will tend to accumulate on the wheel causing  
unbalance. Wheels exhausting dirty or grease-laden  
air require frequent cleaning to assure smooth and  
safe operation.  
Fan  
RPM  
To 250  
500  
Bearing Bore, inches  
1
11  
8
- 11  
2
15  
8
- 17  
8  
11516 - 2316  
2
-1  
2716 - 3  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
9
12  
11  
8
12  
10  
7
12  
8
6
4
3
2
1
0.5  
0.25  
x
750  
1000  
1250  
1500  
2000  
2500  
3000  
3500  
4000  
5000  
7
6
5
6
5
4
All fasteners, including set screws in the bearing  
collars, should be checked for tightness each time  
maintenance checks are performed.  
5
4
3
3
3
2
2
2
1
2
1
0.5  
0.25  
1
0.5  
0.25  
x
0.5  
0.25  
x
A proper maintenance program will help preserve the  
performance and reliability designed into the fan.  
x
x
x
Number  
of Shots  
4
8
8
10  
16  
Centrifugal Utility Fans  
6
®
 
Parts List  
1
4
7
6
5
12  
8
2
3
9
10  
11  
14  
12  
13  
Always provide the unit model and serial number when requesting parts or information.  
Replacement Parts  
1. Scroll housing  
6. Drive frame assembly  
7. Pillow block bearings  
8. Fan shaft  
11. Motor pulley  
2. Drive frame - base angle  
3. Intake support panel  
4. Inlet ring and cone  
5. Wheel (specify rotation)  
12. Belt tensioning bolts  
13. Motor plate  
14. Motor  
9. Shaft pulley  
10. Belt  
Centrifugal Utility Fans  
7
®
 
Troubleshooting  
Problem  
Cause  
Corrective Action  
Adjust wheel and/or inlet cone. Tighten wheel hub or bearing  
collars on shaft.  
Wheel Rubbing Inlet  
Tighten sheaves on motor/fan shaft. Adjust belt tension. Align  
sheaves properly (see page 4). Replace worn belts or sheaves.  
V-Belt Drive  
Bearings  
Excessive Noise  
Replace defective bearing(s). Lubricate bearings. Tighten  
collars & fasteners.  
Clean all dirt off wheel. Check wheel balance, rebalance in  
place if necessary.  
Wheel Unbalance  
Fan  
Check wheel for correct rotation. Increase fan speed.*  
See page 4.  
Low CFM  
High CFM  
Duct System  
Fan  
Resize ductwork. Access door, lters, grills not installed.  
Change obstructions in system. Use correction factor to adjust  
for temperature/altitude. Resize ductwork. Clean filters/coils.  
Change fan speed.*  
Duct System  
Duct system has more  
or less restriction than Check rotation of wheel. Adjust fan speed.  
anticipated  
Static Pressure  
Wrong  
Fan  
Check rotation of wheel. Reduce fan speed.  
High Horsepower  
Resize ductwork. Check proper operation of face and bypass  
dampers. Check filters and access doors.  
Duct System  
Check fuses/circuit breakers. Check for switches off. Check for  
correct supply voltage.  
Electrical Supply  
Fan Doesn’t Operate Drive  
Motor  
Check for broken belts. Tighten loose pulleys.  
Assure motor is correct horsepower and not tripping overload  
protector.  
Lubrication  
Mechanical  
Check for excessive or insufficient grease in the bearing.  
Overheated Bearing  
Replace damaged bearing. Relieve excessive belt tension.  
Align bearings. Check for bent shaft.  
NOTE: Always provide the unit model and serial numbers when requesting parts or service information.  
*Always check motor amps and compare to nameplate rating. Excessive fan speed may overload the motor  
and result in burnout.  
Warranty  
Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the  
shipment date. Any units or parts which prove to be 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 Centrifugal Utility Fan catalog provides additional  
information describing the equipment, fan performance,  
available accessories, and specification data.  
AMCA Publication 410-96, Safety Practices for Users and  
Installers of Industrial and Commercial Fans, provides  
additional safety information. This publication can be  
®
Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected]Website: www.greenheck.com  
455308 • SWB / SFB / SFD, Rev. 6, June 2011  
Copyright 2011 © Greenheck Fan Corporation  
8
 

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