Greenheck Fan Ventilation Hood Vektor H User Manual

Document #469003  
Model Vektor®-H and Vektor®-HS  
Laboratory Exhaust System  
®
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!  
Vektor®-H  
Vektor®-HS  
General Safety Information  
Only qualified personnel should install this fan system.  
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 Electrical Code (CEC) in Canada.  
Table of Contents  
General Safety Information . . . . . . . . . . . . . . . . . . . . . .1  
Receiving / Unpacking / Handling / Storage. . . . . . .2  
Inspection and Maintenance during Storage. . . . . . .2  
Removing from Storage. . . . . . . . . . . . . . . . . . . . . . .3  
General Information  
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 maximum  
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.  
Unit and System Identification. . . . . . . . . . . . . . . . . .3  
Pre-Installation Information . . . . . . . . . . . . . . . . . . . .3  
Electrical Disconnects . . . . . . . . . . . . . . . . . . . . . . . .3  
Moving Parts / Guards. . . . . . . . . . . . . . . . . . . . . . . .3  
Air Pressure and Suction . . . . . . . . . . . . . . . . . . . . . .3  
Lifting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4  
Roof Curb and Mounting Details . . . . . . . . . . . . . . . . .4  
Duct Installation - Bottom Inlet . . . . . . . . . . . . . . . . . .5  
Side or End . . . . . . . . . . . . . . . . . . .5  
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.  
Stack Extensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
System Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Kitchen Roof Mounting Installation. . . . . . . . . . . . . . . .6  
Plenum Drainage Piping and Trap Detail . . . . . . . . . . .7  
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . .7  
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . . .8  
Pre-Start-Up Checks. . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Maintenance  
Belts / Fasteners and Set Screws . . . . . . . . . . . . . . .9  
Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
Fan Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . .9  
Bearing Relubication Schedule . . . . . . . . . . . . . . . .10  
Vektor-HS Nozzle Bearings . . . . . . . . . . . . . . . . . . .10  
Damper Actuators . . . . . . . . . . . . . . . . . . . . . . . . . .10  
Parts List and Assembly . . . . . . . . . . . . . . . . . . . . . . .11  
Maintenance Log. . . . . . . . . . . . . . . . . . . . . . Backcover  
Our Commitment. . . . . . . . . . . . . . . . . . . . . . Backcover  
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.  
Vektor®-H and Vektor®-HS Laboratory Exhaust System  
1
®
 
REMOVING FROM STORAGE  
Electrical Disconnects  
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.  
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.  
Prior to assembly and installation of the Vektor fan and  
system components, inspect the fan assembly to make  
sure it is in working order.  
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 following items to make sure that they are  
installed and secure.  
1. Check all fasteners, set screws on the fan, wheel,  
bearings, drive, motor base and accessories for  
tightness.  
2. Rotate the fan wheel(s) by hand and assure no parts  
are rubbing. Access to the wheel is obtained through  
a bolted panel located on the side of the fan housing.  
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cataloged fan rpm.  
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load. If the fan RPM is changed, the motor current  
should be checked to make sure it is not exceeding  
the motor nameplate amps.  
General Information  
To ensure a successful installation, the instructions in  
this manual should be read and adhered to. Failure to  
comply with proper installation procedures may void the  
warranty.  
Guards (Motor Cover, Weatherhoods)  
Do not operate fans without proper protective devices in  
place. Failure to do so may result in serious bodily injury  
and property damage. Check local codes to ensure  
compliance for all protective devices.  
Unit and System Identification Tags  
Each fan has a permanently affixed manufacturer’s  
engraved metal nameplate containing the model  
number and individual serial number.  
Air Pressure and Suction  
The tag shown  
is an example of  
an identification  
nameplate on the  
fan. The information  
provides general  
details about  
In addition to the usual hazards associated with rotating  
machinery, fans also create a dangerous suction at the  
inlet. Special caution needs to be used when moving  
around a fan, whether it is in operation or not. Before  
start-up, make sure the inlet area is clear of personnel  
and loose objects.  
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. Tags are  
mounted in an area which is clearly visible, usually on  
the side of the fan cabinet.  
Vektor fan systems may arrive in component pieces  
due to shipping restrictions. Individual components of a  
system have matching identification tags which should  
be used to identify and assemble the complete system.  
Assembling systems with different identification tags  
can cause reductions in the fan(s) performance.  
Prior to fully assembling and installing the Vektor-H or  
Vektor-HS fans, inspect bypass air plenums and the fan  
assembly to make sure they are in working order.  
Pre-Installation Information  
Before installation, it is important to be certain the  
mounting surface will bear the operating weight of the  
unit. For proper unit operation, it is also important that it  
be operated in a completely level position.  
For further details on safety practices involving  
industrial and commercial fans, please refer to AMCA  
Publication 410.  
Laboratory Exhaust System  
3
®
 
Lifting Information  
Roof Curb and Mounting Details  
CAUTION  
NOTE  
The cone is to be lifted by the cone lifting lugs,  
separately and individually from the fan assembly.  
Steel, concrete or wood roof support is per structural  
engineer and in accordance with load requirements  
and applicable building codes.  
Vektor-H  
Cone  
The figures below illustrates three common methods  
used to install Vektor systems. Methods used to attach  
a Vektor unit are dependent on local codes, roof  
construction design and roof construction materials.  
Consult an architect or structural engineer for proper  
means of attachment.  
Lifting Lugs  
Cone  
Steel  
Greenheck Roof Curb GPFHL/GPFHD  
Unit  
Assembly  
Lifting Lugs  
Fan  
Continuous weld or stitch weld.  
Minimum 6 inch (152.4 mm) stitch weld by  
3.25 inch (82.5 mm) spacing minimum.  
Minimum 6 inch (152.4 mm) weld on each corner.  
OR  
Bypass  
Install 5/16 inch (7.9375 mm) 24 Dril-Flex® Self-Drilling  
Tapping Screws. 3/16 inch (4.7625 mm) minimum thread  
engagement into A36 steel, centered in flange.  
4.5 inch (114.3 mm) spacing  
Air  
Plenum  
Single Fan System  
without Bypass Air Plenum  
Single Fan System  
with Bypass Air Plenum  
5/8 inch (15.875 mm) minimum edge distance  
ALL HARDWARE BY OTHERS  
STEEL STRUCTURAL SUPPORT  
(BY OTHERS, SEE NOTE ABOVE)  
Cone  
Lifting Lugs  
Concrete  
Greenheck Roof Curb GPFHL/GPFHD  
Install 3/8 inch (9.525 mm) SS power wedge bolts  
2.5 inch (63.5 mm) maximum spacing from curb corners  
4.5 inch (114.3 mm) maximum bolt spacing  
3.5 inch (88.9 mm) minimum embedment  
4.5 inch (114.3 mm) minimum edge  
Unit  
Assembly  
Lifting Lugs  
distance centered in flange  
ALL HARDWARE BY OTHERS  
CONCRETE STRUCTURAL SUPPORT  
(BY OTHERS, SEE NOTE ABOVE)  
Multiple Fan System with Bypass Air Plenum  
Vektor-HS with SAVVE Technology  
Cone  
Lifting Lugs  
Greenheck Roof Curb GPFHL/GPFHD  
Install 3/8 inch (9.525 mm) SS lag or thru-bolt with  
1 inch (25.4 mm) O.D. washer  
2.5 inch (63.5 mm) maximum spacing from curb corners  
4.5 inch (114.3 mm) maximum bolt spacing  
3.5 inch (88.9 mm) minimum tread engagement,  
not including tapered tip  
2 inch (50.8 mm) minimum edge distance,  
centered in flange  
Pre-drill holes 40-60% of lag diameter  
ALL HARDWARE BY OTHERS  
Unit  
Assembly  
Lifting Lugs  
WOODEN STRUCTURAL SUPPORT  
(BY OTHERS, SEE NOTE ABOVE)  
Laboratory Exhaust System  
4
®
 
Duct Installation  
System Assembly  
Bottom Inlet Duct Connection  
NOTE  
The end of the duct (customer-supplied) is secured  
between the roof curb’s top edge and the curb cap of  
either the Vektor-H or bypass air plenum. If an isolation  
damper is present in the roof curb, the duct is located  
between the roof curb and the damper adapter tray.  
When installing each section, be certain to rig each  
section separately using the lifting lugs provided.  
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Vektor-H or Vektor-HS  
Roof Curb  
Duct  
Bolt and Washer  
Detail  
Gasket  
Gasket  
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Vektor-H  
Adapter Tray  
Isolation Damper  
Duct  
5/16 inch self-tapping screws  
Gasket  
Duct Connection to Curb  
5/16 inch self-tapping screws  
Gasket  
Side or End Duct Connection  
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NOTE  
1. Mount roof curb to roof deck in accordance with  
local codes.  
Plenum is provided with removable side or end  
panels, allowing the proper duct connection.  
2. Install 3/16-inch thick x 1/2-inch wide, closed-cell  
gasket on the top edge of the curb, adhesive side  
down (gasket provided). Leave no gaps between  
gasket sections to ensure tight seal.  
Duct flange and  
gasketing by  
others  
Bypass Air  
Plenum  
3. Place the bypass air plenum (BAP) onto the  
previously installed gasket and secured roof curb.  
If a BAP is not provided for the unit, skip to Step 5.  
Pre-drill pilot holes into the roof curb and attach the  
BAP to the roof curb with mounting hardware (by  
others).  
4. Install 3/16-inch thick x 1/2-inch wide, closed-cell  
gasket on the top edge of BAP, adhesive side down  
(gasket provided). Leave no gaps between gasket  
sections to ensure a tight seal.  
Roof Curb  
Duct to Bypass Air Plenum  
5. Place the curb cap of the fan housing onto the  
gasket and BAP or onto roof curb if BAP is not  
provided. Attach the curb cap using the provided  
5/16-inch self-tapping screws. If a BAP is not  
provided, pilot holes must be drilled into the roof  
curb.  
Stack Extensions  
Systems with multiple stack extensions require all  
sections assembled and installed on site between the  
main fan body and the discharge cone. Each section  
has guy wire attachment brackets located on the upper  
end of each section. The order sections are installed  
in are universal. Gasketing (3/16 x 1/2 inch with sticky  
back) is provided and is to be installed between each  
joining section.  
6. Install the final nozzle subassemblies as shown in the  
submittal drawing. Align flange bolt holes and fasten  
sections using the 316 stainless steel bolts, washers,  
and lock washers provided.  
Guy wires are required on system with multiple stack  
extensions. Location of connections, wiring and  
anchorage is determined by a structural engineer.  
7. Follow electrical connection and pre-start-up checks  
as listed on pages 7 and 8.  
Laboratory Exhaust System  
5
®
 
Kitchen Roof Mounting Installation  
UL/cUL 762 installation are for restaurant applications.  
1. The size of the duct must be equal to the inlet  
opening.  
2. Secure the fan to curb at all four corners using a  
minimum eight anchor bolts, lag screws or other  
suitable fasteners.  
3. Use optional grease trap and external junction box.  
4. Area codes may require a continuous weld between  
duct and inlet.  
5. To comply with NFPA 96, the discharge is required  
to be a minimum of 40 inches (1016 mm) above the  
roof deck and a minimum of 10 ft. from any building  
air intake. The minimum velocity in the duct should  
be 500 ft/min. or greater.  
6. Ductwork to an upblast discharge exhaust fan is  
constructed of carbon steel not less than 16 MSG  
(1.6 mm) and extends a minimum of 18 inches  
(457 mm) above the roof surface.  
7. Ensure that a minimum of 500 ft/min. of air velocity  
through the fan is maintained per NFPA 96,  
clause 8.2.1.1, 2008 edition and UL 762, Issue #5,  
December 19, 2003, clause 6.2.  
Grease Trap  
A grease trap is an aluminum trap designed to collect  
grease residue to avoid drainage onto roof surface. It  
contains a built-in water separating baffle.  
Grease  
Trap  
Instructions  
1. Apply cover to grease trap. Install clip nuts to trap  
over holes provided. Attach cover with two #10 - 24  
x 1/2 fasteners.  
Welded duct  
by others.  
2. Position the container under the grease drain so the  
drain spout enters the cover approximately 112 to  
2 in. (38-51 mm).  
3. Locate and mark the container mounting holes on  
the extended base or roof curb.  
Grease  
Trap  
Roof Curb  
Minimum of  
18 inches  
(457 mm)  
above roof  
deck per  
NFPA.  
Roof Deck  
4. Drill 3/16 in. (5 mm) diameter holes in marked  
locations.  
Typical Commercial Kitchen Installation  
5. Apply container with #10 - 24 x 3/4 fasteners.  
WARNING  
6. For most climates, fill container with water (at  
installation and after each cleaning) until it flows out  
the drain hole. The unit is now ready for use.  
In a kitchen exhaust application, do not use a speed  
control or isolation damper.  
NOTE  
Maintenance  
Regular inspection of grease trap is recommended.  
Depending on the amount of grease discharged through  
the fan, the grease trap should be changed accordingly  
to ensure proper operation.  
In a kitchen fan and high temperature applications  
exhaust upblast fans must have external wiring.  
Laboratory Exhaust System  
6
®
 
for compatibility with the fan motor. In addition, the  
supply wiring must be properly fused and conform to  
local and national electrical codes. If the unit is supplied  
with a safety disconnect switch, ensure proper wiring  
to the fan motor. Be sure the disconnect is switched to  
the “OFF” position before connecting supply wires. If  
no disconnect is supplied, ensure the supply wire is not  
live before connection. Supply wires are then connected  
to the optional safety disconnect switch (if supplied) or  
motor.  
Plenum Drainage Piping / Trap  
Detail (By Others)  
Fan Drain  
Connection  
Plenum Drain  
Connection  
Vektor-H Motor Disconnect and Isolation Damper  
Wiring Diagram  
Disconnect is mounted to fan housing. Transformers are  
mounted to bypass air plenum with damper actuator  
motors. For systems that ship unassembled because  
of physical size, this connection at disconnect from  
transformers must be field-installed. Wires with conduit  
and fittings are provided pre-connected to transformers.  
There is a location for a pipe connection on each tubular  
fan housing and bypass air plenum. Each drain may  
need to be connected to a drainage system to ensure  
proper disposal of any water or condensate that may  
occur.  
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Single Phase Layout  
for drainage  
LINE IN  
Field Wiring  
Factory Wiring  
115/208/230/277 volt, single phase  
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Disconnect is mounted to fan housing  
Note: A conservative method of trap design is to set N  
= total static pressure.  
DISCONNECT  
115/208/230/277 volt  
Optional transformer and isolation damper, refer to CAPS file selection  
Single phase  
Positive Pressure Trap on Tubular Fan Housing  
TRANSFORMER  
1.25 inch  
208/230/277 volt, single phase  
Connect  
minimum  
Transformers must be wired independent  
from VFD control.  
this end  
MOTOR  
24/115 volt, single phase  
to fan drain.  
isolation damper actuator motor  
power open/spring close  
115/208/230/277 volt  
Single phase  
N
H
H/2  
FAN OFF  
H/2  
Three Phase Layout  
FAN ON  
LINE IN  
Field Wiring  
208/230/460/575 volt, three phase  
Factory Wiring  
N = Negative fan pressure (inches W.C.)  
H = N - (0.5 inches minimum)  
Disconnect is mounted to fan housing  
DISCONNECT  
208/230/460/575 volt  
Three phase  
Optional transformer and isolation damper, refer to CAPS file selection  
Negative Pressure Trap on Bypass Air Plenum  
1.25 inch minimum  
TRANSFORMER  
208/230/460/575 volt, single phase  
Transformers must be wired independent  
from VFD control.  
MOTOR  
24/115 volt, single phase  
isolation damper actuator motor  
power open/spring close  
N
208/230/460/575 volt  
60 cycle, three phase  
H
H/2  
H/2  
FAN OFF  
FAN ON  
Three Phase with  
Variable Frequency Drives Layout  
N = Negative fan pressure (inches W.C.)  
H = N - (0.5 inches minimum  
LINE IN  
Field Wiring  
Factory Wiring  
208/230/460/575 volt, three phase  
VFD  
supplied and wired  
by others  
Electrical Connections  
Disconnect is mounted to fan housing  
DISCONNECT  
208/230/460/575 volt  
Three phase  
NOTE  
Optional transformer and isolation damper,  
refer to CAPS file selection  
Refer to the Vektor-HS SAVVE controls  
TRANSFORMER (if required)  
208/230/460/575 volt, single phase  
Installation, Operation and Maintenance Manual  
for electrical wiring and connection information.  
Transformers must be wired independent  
from VFD control.  
MOTOR  
24/115 volt, single phase  
isolation damper actuator motor  
power open/spring close  
Before electrical connections are made, the supply  
voltage, phase and ampere capacity must be checked  
208/230/460/575 volt  
60 cycle, three phase  
Laboratory Exhaust System  
7
®
 
Vektor-H Applications with Variable  
Frequency Drive (VFD)  
Pre-Start-Up Checks  
Check all fasteners for tightness.  
Check radial gap, overlap and wheel alignment. The  
wheel should be aligned as shown. Although the wheel  
position is preset and the unit is test run at the factory,  
movement may occur during shipment.  
For Vektor systems with single-point, three-phase  
wiring per blower, the isolation damper actuator will be  
powered via a step-down transformer, which is wired to  
the fan disconnect, as shown in the wiring diagrams on  
page 7.  
The radial gap should be consistent at all locations  
between the centrifugal wheel and the inlet cone.  
Centering may be accomplished by loosening the inlet  
cone bolts and repositioning the inlet cone.  
If fan flow (motor speed) is to be controlled using a  
variable frequency drive with this wiring, the reduced  
voltage and frequency supplied to the fan will cause  
control problems with the isolation damper actuator.  
To obtain the optimum performance, the centrifugal  
wheel must overlap the inlet  
cone. Adjustments can be  
made by loosening the set  
screws in the wheel and  
When a project’s Vektor control sequence requires  
the use of a VFD, it is suggested that the control  
contractor supply the isolation damper actuator voltage,  
independent of the power supplied to the Vektor fan  
motor.  
Wheel  
Inlet  
Cone  
A
moving the wheel to the  
Overlap  
desired position.  
NOTE  
Radial Gap  
Wheel rotation should  
For Vektor-HS fans provided from the factory with  
a VFD, refer to the Vektor-HS SAVVE controls  
Installation, Operation and Maintenance Manual  
for electrical wiring and connection information.  
be in the same direction  
as the rotation decal affixed to the unit. (Clockwise  
rotation is correct as viewed from fan inlet). For 3-phase  
installations, fan rotation can be reversed by simply  
interchanging any two of the three electrical leads. For  
single phase installations, follow the wiring diagram  
located on the motor.  
NOTE  
Any increase in fan speed represents a substantial  
increase in horsepower required from the motor.  
Always check motor load amperage and compare to  
nameplate rating when changing fan speed.  
Inlet Cone to Backplate  
Unit  
A Dimension  
Tolerance (in.)  
A Dimension  
Tolerance (mm)  
Size  
9
3 3/16  
1/8  
1/8  
1/8  
1/8  
1/8  
1/8  
3/16  
1/4  
3/8  
3/8  
81  
3
3
10  
12  
13  
16  
18  
22  
24  
30  
36  
3 7/16  
4
87  
102  
113  
138  
162  
198  
219  
268  
324  
3
4 7/16  
5 7/16  
6 3/8  
3
3
3
7 13/16  
8 5/8  
5
6
10 9/16  
12 3/4  
10  
10  
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 the wheel is  
acceptable as a secondary option.  
Overlap or offset, 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.  
Laboratory Exhaust System  
8
®
 
Maintenance  
Motors  
WARNING  
Many fractional horsepower motors installed on the  
smaller fans are lubricated for life and require no further  
attention. Motors supplied with grease fittings should be  
greased according to directions printed on the motor.  
Disconnect all electrical power to the fan and secure  
to the ‘OFF’ position prior to inspection or servicing.  
Failure to comply with this safety precaution could  
result in serious injury or death.  
Removal of Dust and Dirt  
Once the fan has been put into operation, a periodic  
maintenance program should be set up to preserve  
the reliability and performance of the fan. Items to be  
included in this program are:  
Dirt clogs cooling openings on the motor housing,  
contaminates bearing lubricant, and collects on the  
impeller causing severe imbalance if left unchecked.  
The exterior surface of the motor and impeller should be  
thoroughly cleaned periodically. 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 or water.  
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Belts  
Fan Shaft Bearings  
Premature belt failures are frequently caused by  
improper belt tension (either too tight or too loose) or  
misaligned pulleys. The proper tension for operating a  
V-belt is the lowest tension at which the belts will not  
slip at peak load conditions. For initial tensioning, the  
proper belt deflection  
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.  
Locking collars and set screws, in addition to fasteners  
attaching the bearing to the bearing plate must be  
checked for tightness. Greenheck Fan Corporation  
recommends bearings to be relubricated quarterly at a  
minimum. All Vektor-H and Vektor-HS fans use Mobil  
Mobilith SHC 100 synthetic grease conforming to  
NCGI Grade 2. Never mix greases made with different  
bases as this will cause a breakdown of the grease and  
possible failure of the bearing. For specific information,  
contact the factory representative or the fan system  
submittals.  
Belt Span  
Deflection =  
half-way between pulley  
64  
centers is 1/64 inch for  
each inch of belt span.  
For example, if the belt  
span is 64 inches, the  
belt deflection should be  
one inch using moderate  
thumb pressure at  
midpoint of the drive.  
Belt Span  
Belt Tension  
Check belt tension two times during the first 24 hours  
of operation and periodically thereafter. To adjust belt  
tension, simply loosen four fasteners (two on each side  
of the motor plate) and slide the motor plate away from  
the fan shaft until proper belt tension is attained. On  
some fans, fasteners attaching the motor to the motor  
plate must be loosened in order to adjust  
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dirt or excessive vibration, consult the factory for a  
specific lubrication interval for your application.  
the belt.  
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It is very important that the drive  
pulleys remain in proper alignment  
after adjustments are made.  
Misalignment of pulleys will result  
in premature belt wear, noise,  
vibration and power loss.  
synthetic grease conforming to NLGI Grade 2.  
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lubrication intervals by approximately 3 times.  
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monthly rotation of the shaft and purging grease  
prior to storage and start-up.  
Belt  
Alignment  
Fasteners and Set Screws  
A periodic inspection should include checking all  
fasteners and set screws for tightness. Particular  
attention should be paid to set screws attaching the  
wheel to the shaft.  
Laboratory Exhaust System  
9
®
 
Recommended Bearing Lubrication Schedule  
Relubrication Schedule in Months*  
Fan Size  
9 - 13  
16 - 22  
24  
30 - 36  
Bearing Bore (inches)  
Fan  
RPM  
1
2
- 1  
118 - 112  
158 - 178  
11516 - 2316  
to 250  
500  
12  
12  
12  
12  
12  
12  
12  
10  
7
12  
12  
12  
12  
12  
12  
8
12  
12  
12  
12  
12  
10  
6
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
12  
750  
1000  
1250  
1500  
2000  
2500  
3000  
3500  
4000  
5000  
5
4
5
3
2
3
2
0.75  
2
0.5  
1
Number  
of shots of  
grease**  
4
8
8
10  
* 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.  
** 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 for bore size.  
Vektor-HS Nozzle Bearings  
The bearings for the HS nozzle assembly are  
permanently lubricated and do not require additional  
grease.  
Damper Actuators  
Damper actuators, when supplied by manufacturer,  
are designed to be maintenance free. No lubrication is  
required.  
Laboratory Exhaust System  
10  
®
 
Vektor-H and Vektor-HS Exhaust Fan Parts List and Assembly  
Each fan bears a manufacturer’s nameplate with model number and serial number embossed. This information in  
addition to the parts list shown, will assist the local Greenheck representative and the factory in providing service  
and replacement parts.  
Side View  
Top View  
Bearing Support  
Belt  
Belt Tube  
Shaft Pulley  
Motor  
Pulley  
Motor Cover  
(optional)  
Bearing Cover  
Bearings  
Shaft  
Motor  
Inlet Cone  
(venturi)  
Wheel  
Motor Mounting  
Plate  
Vektor-HS Nozzle Parts List and Assembly  
7
10  
3
6
8
Item Quantity  
Description  
Transition Weld  
Transition side cover  
Wind wrap round  
Wind wrap flat  
Frame bottom bar  
Frame top bar  
Frame weld  
13  
12  
1
2
2
19  
4
15  
2
14  
20  
3
2
18  
4
2
5
5
2
6
2
7
2
16  
8
2
Blade weld  
17  
9
11  
9
1 or 2*  
Actuator mount  
Lifting lug  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
4
1 or 2*  
Actuator cover  
Blade seal, right  
Blade seal, left  
Flex backing  
Vektor backing  
Actuator  
2
2
1
6
4
2
1 or 2*  
1
4
4
2
Electrical box  
Bearing  
Blade seal  
Flex seal  
*Quantity 1 for sizes 9 thru 13  
Quantity 2 for sizes 16 thru 36  
Laboratory Exhaust System  
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:___________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date ___________________Time _____________ AM/PM  
Notes:___________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Date ___________________Time _____________ AM/PM  
Notes:___________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
_________________________________________________  
Our Commitment  
Asaresultofourcommitmenttocontinuousimprovement,Greenheckreservestherighttochangespecifications  
without notice.  
Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the  
Library under Warranties.  
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12  

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