Greenheck Fan Fan 474051 User Manual

Part #474051  
Fiberglass Centrifugal Fan  
®
Installation, Operation and Maintenance Manual  
Please read and save these instructions. 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! Retain instructions for future reference.  
Model BCSW-FRP  
General Safety Information  
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 high winds or seismic activity are present.  
If more information is needed, contact a licensed  
professional engineer before moving forward.  
1. Follow all local electrical and safety codes, as well  
as the National Electrical Code (NEC), 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 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 power before working on or near  
a fan. Lock and tag the disconnect switch or breaker  
to prevent accidental power up.  
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  
7. Never open access doors to a duct while the fan is  
running.  
Precaution should be taken in explosive  
atmospheres.  
Fiberglass Centrifugal Fan  
1
 
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 lint-free cloths.  
Polish any remaining rust from surface with crocus cloth  
or fine emery paper and oil. Do not destroy the continuity  
of the surfaces. Wipe clean thoroughly with Tectyl® 506  
(Ashland Inc.) or the equivalent. For hard to reach internal  
surfaces or for occasional use, consider using Tectyl®  
511M Rust Preventive or WD-40® or the equivalent.  
Table of Contents  
General Information  
Receiving. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Installation Recommendations  
BCSW-FRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Bases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Belt Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Ductwork / Stacks. . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Rotatable Housing . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Radial gap, overlap & wheel alignment . . . . . . . . . 6  
Flexible Couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
V-Belt Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Unit Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . 9-10  
Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Shaft Bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
V-Belt Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Unit Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Maintenance Log . . . . . . . . . . . . . . . . . . . . Backcover  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . Backcover  
CAUTION  
When installing a fan, ensure the proper protective  
devices are used to protect personnel from  
moving parts and other hazards. A complete  
line of protective accessories are available from  
Greenheck including belt guards, shaft guards, and  
electrical disconnects.  
Electrical Disconnects  
All fan motors should have disconnects located in  
close visual proximity to turn off electrical service.  
Service disconnects shall be locked out when  
maintenance is being performed.  
Moving Parts  
All moving parts must have guards to protect  
personnel. Refer to local codes for requirements  
as to the number, type and design. Fully secure fan  
wheel before performing any maintenance. The fan  
wheel may start “free wheeling” even if all electrical  
power has been disconnected. Before the initial  
start-up or any restart, check the belt and shaft  
guards and the access doors to ensure that they  
are installed and secure.  
Model BCSW-FRP  
3
 
Ducted Outlet Installations  
Discharge Duct Turns - Duct turns located near the  
fan discharge should always be in the direction of the  
fan rotation.  
Installation  
Installations with inlet or discharge configurations  
that deviate from this standard may result in reduced  
fan performance. 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 and increased sound levels. Free discharge  
or turbulent flow in the discharge ductwork will also  
result in system effect losses. Refer to the following  
diagrams for the most efficient installation conditions.  
Fan performance is reduced when duct  
turns are made immediately off the  
fan discharge. To achieve cataloged  
fan performance there  
should be at least  
three equivalent  
n
duct diameters of  
straight ductwork  
between the fan  
discharge and  
any duct turns.  
Ducted Inlet Installations  
Inlet Duct Turns - Installation of a duct turn or elbow  
too close to the fan inlet  
POOR  
reduces fan performance  
because air is loaded  
unevenly into the fan  
n
Length of Straight Duct  
wheel. To achieve full fan  
performance, there should  
be at least three fan wheel  
diameter between the turn  
GOOD  
POOR  
or elbow and the fan inlet.  
Non-Ducted Installations  
Inlet Clearance - Installation of a fan with an open  
inlet too close to a wall or bulkhead will cause  
reduced fan performance. It is desirable to have  
one fan wheel diameter between parallel fan units  
and a minimum of three-fourths of a wheel diameter  
between the fan inlet and the wall.  
Three fan wheel diameters  
Turning  
Vanes  
GOOD  
One fan  
wheel  
One fan  
wheel  
Inlet Spin - Inlet spin is a frequent cause of reduced  
fan performance. The change in fan performance is a  
function of the intensity of spin and not easily defined.  
The best solution is proper duct design and airflow  
patterns. Turning vanes reduce the effects of inlet spin.  
diameter  
diameter  
Single Fan Installation  
Turning  
Vanes  
3/4 to  
one fan  
wheel  
3/4 to  
one fan  
wheel  
One fan  
diameter  
diameter  
diameter  
POOR  
GOOD  
Parallel Fan Installation  
Free Discharge - Free or abrupt discharge into a  
plenum results in a reduction in fan performance. The  
effect of discharge static regain is not realized.  
Model BCSW-FRP  
4
 
Bases (Foundation and Isolation)  
Drain Connection  
In order to assure continued alignment, a high  
strength, non-shrink epoxy grout is recommended  
to provide the desired mechanical properties for  
support of the fan. This type of support ensures the  
appropriate transmission of static and dynamic loads  
to the equipment foundation.  
Make sure to either connect the drain or keep it  
plugged. Never leave the drain open to drain freely.  
The drain line must be installed using either a U-trap  
arrangement or an equivalent method (drain leg is  
submerged in liquid). To obtain a proper seal, the leg  
length must be greater than the system pressure drop.  
To eliminate vibration and noise from being transferred  
to the building, vibration isolators should be used.  
The fan is mounted directly on the base and must be  
supported for the entire length of the fan base angle.  
Isolators are installed between the base and the  
foundation.  
Ductwork / Stacks  
All ductwork and/or stacks must be self-supporting  
and independent of the fan. The fan inlet and outlet  
are not designed to support the connecting duct or  
stack. The use of flexible connectors is recommended  
to limit the transmission of stress to the fan. Excessive  
pressure applied when bolting a flange connection  
may cause damage to the fan housing or flange.  
After the fan and isolators are installed, the entire  
assembly must be leveled. Position the level on  
the base, not the fan shaft, for proper leveling.  
Additionally, the motor and fan shafts must be  
level and parallel relative to each other for proper  
alignment.  
Rotatable Housings  
It may be necessary to rotate the scroll of the fan  
to achieve a different discharge position than what  
was originally supplied. Fiberglass fan model BCSW-  
FRP (sizes 6-25; arr. 4 and 10, Class I, II, III, and  
IV) has the flexibility to be rotated in the field. This  
is accomplished by removing the housing bolts,  
rotating the housing to a new discharge position and  
reinstalling the bolts.  
Belt Guards  
If the belt guard is not factory mounted, then it must  
be field mounted. Brackets and mounting hardware  
are the responsibility of the installer. Mounting  
bracket locations vary with motor mounting position,  
arrangement, and fan type. The bearing supports and  
fan structure are used in most instances and when  
the motor is not mounted to the fan itself, a bracket  
should also be located near it. This information is  
intended as only a guide and actual field conditions  
may dictate another mounting location for the guard  
brackets. Refer to local codes for securing guarding.  
Model BCSW-FRP  
5
 
Radial Gap, Overlap and Wheel Alignment  
Efficient fan performance can be maintained by having the correct radial gap, overlap and wheel alignment.  
These items should be checked after the fan has been in operation for 24 hours and before start-up after the  
unit has been serviced.  
Impeller Wheel  
Inlet Cone  
Overlap  
Impeller Wheel  
Inlet Cone  
Radial  
Gap  
Wheel  
Radial  
Gap  
Overlap  
A
Inlet Cone  
A
BCSW-FRP  
Sizes 6 thru 10  
BCSW-FRP  
Sizes 15 thru 73  
A Dimension  
Radial Gap  
Overlap (maximum)  
Unit  
Size  
Tolerance  
(in.)  
Tolerance  
(mm)  
Tolerance  
(in.)  
Tolerance  
(mm)  
Tolerance  
(in.)  
Tolerance  
(mm)  
1
1
1
1
1
3
6
3
1/8  
76  
3
3
8
8
8
8
8
1/32  
3
3
3
3
3
5
5
5
5
5
5
5
6
6
1
1
1
1
1
1
1
1
2
2
2
2
2
2
8
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
10  
11  
11  
19  
29  
32  
22  
25  
32  
44  
38  
37  
19  
32  
2
2
2
2
2
2
2
2
2
2
2
2
2
2
8
4
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
102  
127  
138  
181  
202  
232  
283  
337  
394  
435  
487  
533  
654  
1/32  
1/32  
1/32  
1/32  
1/32  
1/32  
1/32  
1/16  
1/16  
1/16  
1/16  
1/16  
1/16  
716  
716  
10  
15  
18  
22  
25  
30  
36  
44  
48  
54  
60  
73  
5
3
3
5716  
718  
71516  
918  
1118  
1314  
1512  
1718  
19316  
21  
3
4  
3
118  
114  
5
316  
316  
316  
316  
316  
316  
316  
7
6
8
10  
10  
10  
13  
13  
13  
13  
1
114  
134  
112  
1716  
3
732  
1
4  
2534  
4  
114  
Overlap is adjusted by loosening the wheel hub from  
the shaft and moving the wheel to the desired position  
along the shaft. The transition between the inlet cone  
and wheel should be as shown; there is a smooth feel  
to the profile when moving from one component to the  
other.  
Radial Gap is adjusted by loosening the housing bolts  
and centering the inlet cone on the wheel. If additional  
adjustment is required to maintain a constant radial  
gap, loosening the bearing bolts and centering the  
wheel is acceptable as a secondary option.  
Model BCSW-FRP  
6
 
Flexible Couplings (Arr. 8 Only)  
V-Belt Drives  
The V-belt drive components, when supplied by  
Greenheck Fan Corporation, have been carefully  
selected for this unit’s specific operating condition.  
Check for misalignment between the coupling halves.  
Parallel and angular misalignment and separation gap  
are illustrated below. Refer to coupling manufacturer’s  
installation instructions for allowable misalignment  
and separation gap tolerances. When correcting for  
misalignment using shims, the shims should only be  
located under the motor. Do not place shims under the  
shaft bearings.  
CAUTION  
Changing V-belt drive components could result in  
unsafe operating conditions which may cause  
personal injury or failure of the following  
After aligning procedure, check for tightness of all  
coupling component pieces and ensure that they are  
clean from dirt and debris.  
components:  
1. Fan shaft  
2. Fan wheel  
3. Bearings  
4. V-belt  
5. Motor  
V-Belt Drive Installation  
1. Remove the protective coating from the end of the  
fan shaft and assure that it is free of nicks and burrs.  
Parallel Misalignment  
Angular Misalignment  
Separation Gap  
2. Check fan and motor shafts for parallel and angular  
alignment.  
3. Slide sheaves on shafts - do not drive sheaves on as  
this may result in bearing damage.  
4. Align fan and motor sheaves with a straight-edge or  
string, and tighten.  
5. Place belts over  
sheaves. Do not pry or  
force belts, as this could  
result in damage to the  
cords in the belts.  
6. Adjust the tension until  
the belts appear snug.  
Run the unit for a few  
minutes (see section  
Aligning sheaves with  
on unit start-up) and  
allow the belts to seat  
a straight-edge  
properly.  
7. With the fan off, adjust the belt tension by moving  
the motor base. (See belt tensioning procedures in  
the maintenance section of this manual). When in  
operation, the tight side of the belts should be in a  
straight line from sheave to sheave with a slight bow  
on the slack side.  
Improper sheave  
alignment  
Proper sheave  
alignment  
Model BCSW-FRP  
7
 
Vibration  
Unit Start-Up  
Excessive vibration is the most frequent problem  
experienced during initial start-up.  
1. Disconnect and lock-out all power switches to fan.  
See warning below.  
2. Check all fasteners, set screws and locking collars on  
the fan, bearings, drive, motor base and accessories  
for tightness.  
Common Sources of Vibration  
1. Wheel Unbalance  
2. Drive Pulley Misalignment  
3. Incorrect Belt Tension  
4. Bearing / Coupling Misalignment  
5. Mechanical Looseness  
6. Faulty Belts  
7. Drive Component Unbalance  
8. Poor Inlet/Outlet Conditions  
9. Foundation Stiffness  
3. Rotate the fan wheel by hand and assure no parts  
are rubbing.  
4. Check for bearing alignment and lubrication.  
5. Check for coupling alignment (Arr. 8 only).  
6. Check the V-belt drive for proper alignment and tension.  
7. Check all the guarding (if supplied) for being securely  
attached and not interfering with rotating parts.  
Left unchecked, excessive vibration can cause a  
multitude of problems, including structural and/or  
component failure.  
8. Check all electrical connections for proper  
attachment.  
Many of these conditions can be discovered by careful  
observation. Refer to the troubleshooting section  
of this manual for corrective actions. If observation  
cannot locate the source of vibration, a qualified  
technician using vibration analysis equipment should  
be consulted. If the problem is wheel unbalance,  
the wheel should be sent back to the factory to be  
properly rebalanced.  
9. Check housing and ductwork, if accessible, for  
obstructions and foreign material that may damage  
the fan wheel.  
10. Check that the drain is connected, or plugged, and  
the housing is being properly drained.  
WARNING  
Greenheck performs a vibration test on all centrifugal  
fans before shipping. Three vibration readings are  
taken on each bearing in the horizontal, vertical, and  
axial directions. The allowable maximum vibration  
for belt drive units is 0.078 in/sec. peak (0.05 in/  
sec. direct drive) velocity filter-in at the fan RPM per  
AMCA Standard 204. These vibration signatures are a  
permanent record of how the fan left the factory and  
are available upon request.  
Disconnect and secure to the “Off” position all  
electrical power to the fan prior to inspection  
or servicing. Failure to comply with this safety  
precaution could result in serious injury or death.  
Additional Steps for Initial Start-Up  
1. Check for proper wheel  
rotation by momentarily  
energizing the fan. Rotation  
is always determined by  
viewing the wheel from  
the drive side and should  
correspond to the rotation  
decal affixed to the unit.  
Generally, fan vibration and noise is transmitted  
to other parts of the building by the ductwork. To  
eliminate this undesirable effect, the use of heavy  
canvas connectors is recommended. If fireproof  
material is required, FlexweaveTM 1000 - Type FN-30  
can be used.  
One of the most frequently  
encountered problems with  
Centrifugal Fans is motors  
which are wired to run in the  
Clockwise Rotation  
Always viewed from  
the drive side.  
wrong direction. This is especially true with 3-phase  
installations where the motor will run in either  
direction, depending on how it has been wired. To  
reverse rotation of a 3-phase motor, interchange any  
two of the three electrical leads.  
2. Check for unusual noise, vibration or overheating of  
bearings. Refer to the “Troubleshooting” section of  
this manual if a problem develops.  
3. Grease may be forced out of the bearing seals  
during initial start-up. This is a normal self-purging  
feature of this type of bearing.  
Model BCSW-FRP  
8
 
Shaft Bearings  
Routine Maintenance  
The bearings for Greenheck fans are carefully  
selected to match the maximum load and operating  
conditions of the specific class, arrangement, and  
fan size. The instructions provided in this manual  
and those provided by the bearing manufacturer, will  
minimize any bearing problems. Bearings are the  
most critical moving part of the fan, therefore special  
care is required when mounting them on the unit and  
maintaining them.  
Once the unit has been put into operation, a routine  
maintenance schedule should be set up to accomplish  
the following:  
1. Lubrication of bearings and motor (see below).  
2. Wheel, housing, bolts and set screws on the entire  
fan should be checked for tightness.  
3. Any dirt accumulation on the wheel or in the  
housing should be removed to prevent unbalance  
and possible damage.  
Refer to the following chart and the manufacturers  
instructions for grease types and intervals for various  
operating conditions. Never mix greases made with  
different bases. This will cause a breakdown of the  
grease and possible failure of the bearing.  
4. Springs should be checked for breaks and  
fatigue. Rubber isolators should be checked for  
deterioration.  
5. Inspect fan impeller and housing looking for fatigue,  
corrosion, or wear.  
Recommended Fan Bearing Lubrication Schedule - Standard Grease  
Lubrication Schedule in Months*  
When performing any service to the fan, disconnect  
the electrical supply and secure fan impeller.  
Bearing Bore (inches)  
2
-
118  
112  
-
158  
-
11516  
-
2716  
3316  
-
31516 - 41516  
-
Fan RPM  
1
1
178  
2316  
- 3  
312  
412  
10  
5
578  
8
Motors  
To 250  
500  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
4
12  
12  
9
12  
10  
8
12  
10  
7
12  
8
12  
7
Motor maintenance is generally limited to cleaning  
and lubrication. Cleaning should be limited to exterior  
surfaces only. Removing dust and grease build up on  
the motor housing assists proper motor cooling. Never  
wash-down motor with high pressure spray. Greasing  
of motors is only intended when fittings are provided.  
Many fractional 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. When  
motor ambient temperature does not exceed 104°F  
(40°C), the grease should be replaced after 2000 hours  
of running time.  
4
750  
6
4
3
2
1000  
7
6
5
4
3
2
1
1250  
6
5
4
3
2
1
0.5  
1500  
5
4
3
2
1
0.5  
0.25  
2000  
3
2
2
1
0.5  
2500  
2
2
1
0.5  
0.25  
0.25  
3000  
2
1
0.5  
0.25  
3500  
1
0.5  
4000  
0.5  
0.25  
5000  
0.25  
8
# of shots**  
8
10  
16  
25  
41  
57  
*Suggested initial greasing interval is based on 12 hour per  
day operation and 160ºF maximum housing temperature.  
For continuous (24 hour) operation, decrease greasing  
interval by 50%.  
CAUTION  
When operating conditions of the fan are to be  
changed (speed, pressure, temperature, etc.),  
consult Greenheck to determine if the unit can  
operate safely at the new conditions.  
If possible, relubricate with grease while in operation  
without endangering personnel.  
For ball bearings (operating) relubricate until clean  
grease is seen purging at the seals. Be careful not to  
unseat the seal by over lubricating.  
For ball bearings (idle) add 1-2 shots of grease up to  
2 in. bore sizes, and 4-5 shots of grease above 2 in. bore  
sizes with hand grease gun.  
For roller bearings, relubricate with 4 shots of grease up  
to 2 in. bore size, 8 shots for 2-5 in. bore size, and 16  
shots above 5 in. bore size with hand grease gun.  
Adjust lubrication frequency based on condition of  
purged grease.  
A high quality lithium base grease conforming to NLGI  
Grade 2 consistency is recommended.  
The use of synthetic lubricants will increase lubrication  
intervals by approximately three (3) times.  
WARNING  
Lubricate bearings prior to periods of extended  
shutdowns or storage and rotate shaft monthly to  
aid in preventing corrosion. If the fan is stored more  
than three months, the bearings should be purged  
with new grease prior to start-up.  
Model BCSW-FRP  
9
 
V-Belt Drives  
Unit Identification  
V-belt drives must be checked on a regular basis  
for wear, tension, alignment and dirt accumulation.  
Premature or frequent belt failures can be caused by  
improper belt tension—either too loose or too tight—  
or misaligned sheaves. Abnormally high belt tension  
or drive misalignment will cause excessive bearing  
loads and may result in failure of the fan and/or motor  
bearings. Conversely, loose belts will cause squealing  
on start-up, excessive belt flutter, slippage, and  
overheated sheaves. Either excessively loose or tight  
belts may cause fan vibration.  
This tag is an example of an identification label on the  
fan. The information provides general details about the  
fan, as well as containing specific information unique to  
the unit. When contacting your Greenheck representative  
with future needs or questions, please have the  
information on this label available.  
MODEL  
S/N  
When replacing V-belts on multiple groove drives all  
belts should be changed to provide uniform drive  
loading. Do not pry belts on or off the sheave. Loosen  
belt tension until belts can be removed by simply  
MARK  
MAX FRPM @ 70˚ F  
lifting the belts off the  
Belt Span  
Deflection  
=
Model = General description of fan  
64  
sheaves. After replacing  
belts, insure that slack in  
each belt is on the same  
side of the drive. Belt  
dressing should never  
be used.  
S/N  
= Serial Number assigned by Greenheck,  
which is a unique identifier for every unit  
Mark = Customer supplied identification  
Belt Span  
Tags are mounted on the drive frame in an area which  
is clearly visible, usually near the fan outlet on the drive  
side of the fan. The exact tag location may differ due fan  
model and size.  
Do not install new belts on worn sheaves. If the  
sheaves have grooves worn in them, they must be  
replaced before new belts are installed.  
The proper tension for operating a V-belt drive is the  
lowest tension at which the belts will not slip at peak  
load conditions. Check belt tension before start up  
and after the first 24 hours of operation. The belt  
tension should also be checked periodically thereafter.  
Parts List  
Outlet Flange  
Housing  
Inlet Cone  
Wheel  
Gasket  
Backplate  
Shaft Seal  
Shaft Guard  
Bearings  
Shaft  
Shaft  
Pulley  
Belt  
Guard  
Motor  
Pulley  
Access Door  
with Gasket  
Base/Housing  
Foot Angle (4)  
Belt  
Belt Guard  
Cover  
Adjustable Motor  
Slide Base  
Model BCSW-FRP  
10  
 
Troubleshooting  
Problem  
Cause  
Corrective Action  
Adjust wheel.  
Tighten wheel hub or bearing collars on shaft.  
Wheel rubbing (inlet)  
Tighten Sheaves on motor/fan shaft. Adjust belt tension. Align  
sheaves properly (see V-Belt Drives section). Replace worn belts  
or sheaves.  
V-belt drive  
Excessive Noise  
Replace defective bearing(s). Lubricate bearings.  
Tighten collars and fasteners.  
Bearings  
Clean all dirt off wheel. Check wheel balance, rebalance if  
necessary.  
Wheel unbalance  
Fan  
Check wheel for correct rotation. Increase fan speed.*  
See page 3.  
Low CFM  
High CFM  
Duct system  
Fan  
Decrease fan speed.  
Duct system  
Resize ductwork. Access door, filters, grilles not installed.  
Duct system  
Static Pressure  
Wrong  
has more or less  
restriction than  
anticipated  
Change obstructions in system. Use correction factor to adjust  
for temperature/altitude. Resize ductwork. Change fan speed.*  
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 turned off or  
disconnected. 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  
Check for excessive or insufficient grease in the bearings.  
Overheated Shaft  
Bearing  
Replace damaged bearing. Relieve excessive belt tension. Align  
bearings. Check for bent shaft.  
Mechanical  
Belts  
Adjust tightness of belts. Replacement belts should be a matched  
set.  
Check alignment of shaft, motor and pulleys. Check wheel  
balance, rebalance if necessary.  
Excessive  
Vibration  
System unbalance  
Check alignment between coupling, motor and fan shafts.  
Any adjustments should be made per coupling manufacturer’s  
instructions. Shim only under motor.  
Coupling  
misalignment  
* Always check motor amps and compare to nameplate rating. Excessive fan speed may overload the motor and result in  
motor failure. Do not exceed the maximum cataloged RPM of the fan.  
NOTE: Always provide the unit model and serial numbers when requesting parts or service information.  
Model BCSW-FRP  
11  
 
Maintenance Log  
Date __________________ Time _____________ AM/PM  
Notes: __________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date __________________ Time _____________ AM/PM  
Notes: __________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date __________________ Time _____________ AM/PM  
Notes: __________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date __________________ Time _____________ AM/PM  
Notes: __________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date __________________ Time _____________ AM/PM  
Notes: __________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date __________________ Time _____________ AM/PM  
Notes: __________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
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 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 Fiberglass Centrifugal Fans, Model  
BCSW-FRP, 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  
474051 • BCSW-FRP, Rev. 1, November 2010  
Copyright 2010 © Greenheck Fan Corporation  
12  
 

Grizzly Saw G0716 User Manual
Harbor Freight Tools Drill 44849 User Manual
Harbor Freight Tools Saw 01624 User Manual
Honeywell Air Conditioner HZ 614 User Manual
HP Hewlett Packard Fax Machine 8100C User Manual
HP Hewlett Packard Webcam RZ406AA User Manual
Huffy Fitness Equipment 211954E User Manual
Husky Pressure Washer HU80520 User Manual
Husqvarna Trimmer 326HDA55X Series 326HE3X Series 326HE4 User Manual
iHome Portable Speaker iHM7 User Manual