Greenheck Fan Ventilation Hood 459968 User Manual

Part #459968  
®
Tubular Centrifugal & Mixed Flow  
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 TCF  
Tubular Centrifugal Inline Fan  
Models QEI and QEID  
Mixed Flow Inline Fan  
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) 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 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.  
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.  
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  
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.  
Model TCF and Models QEI/QEID Centrifugal  
 
1
REMOVING FROM STORAGE  
QEI/QEID Radial Gap  
Adjust inlet cone position such that the radial gap  
between the wheel cone and inlet cone is evenly  
distributed around the wheel.  
As fans are removed from storage to be installed  
in their final location, they should be protected and  
maintained in a similar fashion, until the fan equipment  
goes into operation.  
QEI/QEID Alignment  
Prior to fully assembling and installing the fan and  
system components, inspect the fan assembly to  
make sure it is in working order.  
If necessary, adjust wheel position by loosening the  
wheel hub from the fan shaft so that a straight edge  
held tight to the wheel cone just touches the inlet  
cone. Refer to drawing below.  
1. Check all fasteners, set screws, wheel, bearings,  
drive, motor base and accessories for tightness.  
Straight Edge  
2. Rotate the fan wheel by hand and assure no parts  
are rubbing. Access to the wheel is obtained  
through an access panel located on the side of the  
fan housing.  
Wheel  
Cone  
Radial  
Gap  
3. Ensure proper wheel settings for radial gap and  
alignment. See below.  
Inlet Cone  
Radial Gap, Overlap & Alignment  
Efficient fan performance can be maintained by having  
the correct radial gap, overlap and alignment. These  
items should be checked before start-up and after the  
fan has been in operation for 24 hours.  
Installation  
Installations with poor inlet or discharge  
configurations may result in reduced fan performance.  
TCF Radial Gap  
Ducted Installations  
Radial gap is adjusted by loosening the inlet  
cone bolts and centering the cone on the wheel.  
If additional adjustment is required to maintain a  
constant radial gap, loosening the bearing bolts and  
centering wheel is acceptable  
Inlet Duct Turns – Installation of a duct turn or elbow  
too close to the fan inlet reduces 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. To achieve full fan performance, there  
should be at least one fan wheel diameter between  
the turn or elbow and the fan inlet.  
Overlap  
as a secondary option.  
TCF Overlap  
Overlap is adjusted by  
loosening the wheel hub from  
the shaft and moving the  
wheel to the desired position  
along the shaft. The chart  
Good  
Poor  
1 Fan  
Wheel  
Dia.  
A
shows the proper distance  
between the wheel and  
the inlet cone.  
Radial  
Gap  
Turning  
Vanes  
TCF Size Dimension A (in.)  
Dimension A (mm)  
Discharge Duct Turns – 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 duct  
diameters of straight ductwork between the fan  
discharge and any duct turns.  
1
18  
20  
22  
24  
27  
30  
33  
36  
40  
44  
49  
54  
60  
66  
73  
638  
8
86  
3
7
1316  
178  
198  
219  
240  
268  
291  
324  
360  
395  
435  
478  
532  
581  
648  
5
5
6
6
71316  
858  
1316  
1
4  
9716  
4
1
3
10916  
11716  
1234  
14316  
15916  
1718  
181316  
201516  
2278  
2512  
8  
8  
8  
8  
8  
2  
2  
2  
2  
2  
10  
10  
10  
10  
10  
13  
13  
13  
13  
13  
3
3
3
3
1
1
1
1
1
Poor  
Length of  
Straight Duct  
Good  
Models TCF and Model QEI/QEID Centrifugal  
 
3
®
Non-Ducted Installation  
Unit Start-Up  
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 a  
minimum of one fan wheel  
DANGER  
High voltage electrical input is needed for this  
equipment. This work should be performed by a  
qualified electrician.  
1 Fan  
Wheel  
Dia.  
diameter between the fan  
inlet and the wall.  
WARNING  
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, and  
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.  
1. Disconnect and lock-out all power switches to  
fan.  
performance is reduced.  
2. Check all fasteners, set screws and locking  
collars on the fan, wheel, bearings, drive, motor  
base and accessories for tightness.  
3. Rotate the fan wheel by hand and assure no parts  
are rubbing.  
4. Check for bearing alignment and lubrication.  
5. Check the V-belt drive for proper alignment and  
tension.  
Duct Connections  
It is highly recommended to use a flexible sleeve  
connection instead of a rigid duct connection. This will  
reduce vibration transmission through the ductwork.  
Slip-Fit End Connection (QEI/QEID)  
Directly attach the flexible sleeve to the duct and fan.  
No additional parts are required.  
6. Check all guarding (if supplied) to ensure that it is  
securely attached and not interfering with rotating  
parts.  
Flexible Sleeve  
7. Check operation of variable inlet vanes or  
discharge dampers (if supplied) for freedom of  
movement.  
Fan  
Duct  
8. Check all electrical connections for proper  
attachment.  
9. Check housing and ductwork, if accessible,  
for obstructions and foreign material that may  
damage the fan wheel.  
Flanged End Connection (TCF/QEI/QEID)  
Optional companion flanges are bolted to the fan to  
provide a slip-fit connection for a flexible sleeve.  
Flexible Sleeve  
10. Check for proper wheel rotation by momentarily  
energizing the fan. Rotation should correspond  
to the rotation decal affixed to the unit (CCW  
rotation is correct as viewed from the fan inlet).  
Fan  
Duct  
Companion Flange  
Note: Flexible sleeve & attachment hardware not provided.  
Mixed Flow  
Centrifugal Airfoil  
NOTE: One of the most frequently encountered  
problems with centrifugal fans is motors which are  
wired to run in the 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.  
Single phase motors can be reversed by changing  
internal connections as described on the motor label  
or wiring diagram.  
Model TCF and Models QEI/QEID Centrifugal  
 
4
®
11. If the fan has inlet vanes, they should be partially  
closed to reduce power requirements.  
12. Fans with multi-speed motors should be checked  
on low speed during initial start-up.  
13. Ensure proper wheel location for radial gap,  
overlap and alignment (see Radial Gap, Overlap  
& Alignment section on page 3).  
4. Any dirt accumulation on the wheel or in the  
housing should be removed to prevent unbalance  
and possible damage.  
5. Isolation bases should be checked for freedom  
of movement and the bolts for tightness. Springs  
should be checked for breaks and fatigue. Rubber  
isolators should be checked for deterioration.  
6. Inspect fan impeller and housing looking for  
fatigue, corrosion or wear.  
14. Grease may be forced out of the bearing seals  
during initial start-up. This is a normal self-  
purging feature of the bearing.  
15. Check for unusual noise, vibration or overheating  
of bearings. Refer to the Troubleshooting section  
of this manual if a problem develops.  
WARNING  
Changing the belts or drives can significantly  
increase the amp draw of the motor. If changes  
are made to the drives or belts, the amps must be  
checked to assure no overamping.  
Vibration  
Excessive vibration is the most frequent problem  
experienced during initial start-up. Left unchecked,  
excessive vibration can cause a multitude of  
problems, including structural and/or component  
failure.  
V-Belt Drives  
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.  
The most common sources of vibration are:  
Wheel unbalance  
Drive pulley misalignment  
Incorrect belt tension  
Bearing misalignment  
Mechanical looseness  
Faulty belts  
Drive component unbalance  
Poor inlet/outlet conditions  
Foundation stiffness  
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  
lifting the belts off the sheaves. After replacing belts,  
ensure that slack in each belt is on the same side of  
the drive. Belt dressing should never be used.  
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,  
in-place balancing can be done providing there is  
access to the fan wheel. Any correction weights  
added to the wheel should be welded to either the  
wheel back (single-plane balance) or to the wheel  
back and wheel cone (two-plane balance).  
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. Belts are adjusted by raising or  
lowering the motor pivot plate. For initial tensioning,  
the proper belt deflection half-way between sheave  
centers is 1/64 of the belt span. For example, if the  
belt span is 64 inches, the belt deflection should be  
1 inch using moderate thumb pressure at mid-point  
of the drive. Check belt tension two times during  
the first 24 hours of operation and periodically  
thereafter.  
Maintenance  
WARNING  
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.  
Belt Span  
Deflection =  
64  
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.  
2. Variable inlet vanes should be checked for freedom  
of operation and wear.  
3. Wheel, housing, bolts and set screws on the entire  
fan should be checked for tightness.  
Belt Span  
Models TCF and Model QEI/QEID Centrifugal  
 
5
®
V-Belt Replacement  
Fan Bearing Lubrication  
The V-belt drive components, when supplied by  
Greenheck Fan Corporation, have been carefully  
selected for this unit’s specific operating condition.  
Changing V-belt drive components could result  
in unsafe operating conditions which may cause  
personal injury or failure of fan components.  
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.  
1. Remove the protective coating from the end of the  
fan shaft using mineral spirits or another similar  
solvent. Check to ensure that the shaft is free of  
nicks and burrs.  
2. Slide sheaves on shafts. Do not drive sheaves on  
as this may result in bearing damage.  
3. Align fan and motor sheaves  
with a straight-edge or string  
and tighten.  
Refer to the following chart and the manufacturer’s  
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.  
Recommended Fan Bearing Lubrication Schedule (in Months*)  
4. Place belts over sheaves. Do  
not pry or force belts, as this  
could result in damage to the  
cords in the belts.  
5. Adjust the tension until the  
belts appear snug. Run the  
unit for a few minutes (refer to  
Bearing Bore  
Fan  
RPM  
11516  
2716  
3316  
31516  
- 412  
1
2
- 1 118 - 112 158 - 178  
- 2316  
- 3  
- 312  
To 250  
500  
6
6
6
6
5
5
5
4
4
6
6
6
6
6
5
6
4
5
3
4
3
Aligning sheaves  
with a straight edge  
750  
5
4
3
3
2
2
1000  
1250  
1500  
2000  
2500  
3000  
4
3
2
2
1
1
3
2
1
1
0.5  
0.5  
0.25  
0.25  
0.5  
0.25  
0.25  
unit start-up section) and allow the belts to “set”  
properly.  
2
1
1
0.5  
0.25  
0.25  
0.25  
1
1
0.5  
0.25  
0.25  
6. With the fan off, adjust the belt tension by moving  
the motor pivot plate. (Belts are adjusted by  
raising or lowering the motor pivot plate). 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.  
0.5  
0.5  
0.5  
0.25  
*Suggested initial greasing interval is based on 12 hour per  
day operation and 150º F. maximum housing temperature.  
For continuous (24 hour) operation, decrease greasing  
interval by 50%.  
If possible, relubricate with grease while in operation  
without endangering personnel.  
Motors  
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.  
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, such as those listed below, should  
be used.  
CAUTION  
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.  
Greasing of motor bearings is only required when  
fittings are provided. Many fractional motors are  
permanently lubricated and require no further  
lubrication. Motors supplied with grease fittings  
should be greased in accordance with the  
manufacturer’s recommendations. When motor  
temperature does not exceed 104ºF (40ºC), the grease  
should be replaced after 2000 hours of running time.  
Mobilith SHC 220  
Mobilith AW2  
Shell Alvania #2  
Texaco Multifak AFB2  
Texaco Premium RB  
Exxon Unirex N2  
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 TCF and Models QEI/QEID Centrifugal  
 
6
®
Fan Bearing Replacement  
Replacement of bearings requires disassembly of internal components. For this procedure access must be  
available to both the inlet and outlet ends. The following procedure assumes belts have already been loosened  
and removed. (Belts are removed by adjusting the motor pivot plate).  
Reinstall components in reverse order of removal. Reference the Radial Gap, Overlap & Alignment section to  
ensure proper wheel installation.  
Model TCF  
1. Remove cover plate from drive chamber (outlet  
Model QEI  
If the bearings cannot be removed from the shaft due  
to corrosion or damage, the bearing plates can be  
removed from the inner chamber. The shaft/bearing/  
bearing plates can be removed as a complete  
assembly from the fan inlet.  
side).  
2. Unbolt and remove inlet cone (inlet side).  
3. Loosen set screws at the wheel hub and remove  
wheel (inlet side).  
1. Unbolt and remove inlet cone (inlet side).  
2. Loosen set screws at the wheel hub and remove  
wheel (inlet side).  
3. Remove bolts from drive bearing plate (outlet side).  
4. Remove bolts from wheel bearing plate (inlet side).  
5. Pull shaft/bearing/bearing plate assembly out of  
the fan housing (inlet side).  
4. Unbolt both sets of bearings from support bars  
(outlet side).  
5. Remove shaft/bearing assembly (outlet side).  
6. Replace bearings on drive shaft.  
Cover  
Plate  
Shaft/Bearing  
Assembly  
Housing  
6. Replace bearings on shaft/bearing/bearing plate  
assembly.  
Wheel  
Inlet  
Cone  
Shaft/Bearing/  
Housing  
Bearing Plate Assembly  
Inlet  
Cone  
Wheel  
Models TCF and Model QEI/QEID Centrifugal  
 
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 6). Replace worn belts or sheaves.  
V-Belt Drive  
Bearings  
Excessive Noise  
Replace defective bearing(s). Lubricate bearings. Tighten collars and  
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 pages 3 and 4.  
Volume Too Low  
Volume Too High  
Duct System  
Fan  
Decrease fan speed.  
Duct System  
Resize ductwork. Access door, filters, grilles not installed.  
Change obstructions in system. Use correction factor to adjust for  
temperature/altitude. Resize ductwork. Clean filters/coils. Change fan  
speed.  
Duct system has more or less  
restriction than anticipated  
Static Pressure Wrong  
Fan  
Check rotation of wheel.  
Excessive Power Consumption  
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  
Drive  
Fan Doesn’t Operate  
Check for broken belts. Tighten loose pulleys.  
Assure motor is correct horsepower and not tripping overload  
protector.  
Motor  
Lubrication  
Mechanical  
Belts  
Check for excessive or insufficient grease in the bearing.  
Bearings Overheated  
Excessive Vibration  
Replace damaged bearing. Relieve excessive belt tension. Align  
bearings. Check for bent shaft.  
Adjust tightness of belts. Replacement belts should be a matched set.  
Check alignment of shaft, motor and pulleys. Adjustable pitch pulleys  
with motors over 15 hp motors are especially prone to unbalance.  
Check wheel balance, rebalance if necessary.  
System Unbalance  
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 Catalogs Model TCF and Models QEI/QEID  
provide 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  
459968 • TCF and QEI/QEID, Rev. 3, July 2008  
Copyright 2008 © Greenheck Fan Corporation  
8
 

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