Greenheck Fan Vektor-CD Direct or Belt Drive The Vektor-CD fan 47555 User's Manual
Contents
1. Vektor CD Centrifugal Laboratory Exhaust EE Troubleshooting Problem Case Corrective Action a Adjust wheel and or inlet cone Tighten wheel hub or Wheel rubbing inlet bearing collars on shaft Tighten sheaves on motor fan shaft Adjust belt tension V belt drive Align sheaves properly see procedure Replace worn Excessive noise belts or sheaves Replace defective bearing s Lubricate bearings Tighten collars and fasteners Bearings Clean all dirt off wheel Check wheel balance replace if necessary Fan Check wheel for correct rotation Check blade position Low CFM of bypass air plenum BAP damper increase fan speed Duct system Higher pressure than design Filters need replacement Fan Decrease fan speed High CFM Increase BAP damper blade open position Resize y ductwork Access door filters dampers not installed Change obstructions in system Use correction factor to adjust for temperature altitude Adjust set point used to control BAP damper modulation Resize ductwork Clean filters coils Change fan speed Fan Check rotation of wheel Reduce fan speed High horsepower Daet syan Resize ductwork Check proper operation of isolation y and bypass dampers Check filters and access doors Check fuses circuit breakers Check for switches turned off or disconnected Check for correct supply voltage Fan doesn t operate Drive Check for broken belts Tighten l2. c0 e n EI Concrete structural support by others Wood Deck Greenheck Roof Curb for Vektor Systems TN Install 1 2 in lag or thru bolt as determined by structural engineer with 1 in washer in each hole shown aa hardware by others yy VI 2222222222 XXX XXXXX2J XO e XS 79 9 lt CX 22 SRN 9 m XO 9 Ix IR 2 Wooden structural support by others 4 Vektor CD Centrifugal Laboratory Exhaust H Riser Installation Check curb or structural supports for levelness Both must be level to ensure proper drainage from plenum and fan s Lab Exhaust Riser Riser duct s run up through the curb and are flanged over the curb by contractor Roof Curb anchor curb to roof deck structure in accordance with project construction documents and local codes ere Plenum Isometric View For side inlet fans remove panel at end of plenum This opening is the designed connection spot for user connected ductwork from building Plenum Assembly Note Gasketing material shipped with fan should be placed on the top edge of already installed roof curb prior to placing the plenum or individual plenum sections on the curb If the plenum is shipped disassembled the plenum sections can be assembled together into one single piece before lifting onto the roof and then fitted on
3. NOTE Steel concrete or wood support is per structural engineer and in accordance with load requirements and applicable building codes To eliminate vibration and noise from being transferred Structural Steel to the building vibration isolators should be used The fan is mounted directly on the isolation base and must be supported for the entire length of the fan base angle Refer to the installation manual for structural bases if the base was supplied by Greenheck Isolators are installed between the isolation base and the foundation After the fan isolation base and isolators are installed the entire assembly must be leveled Position the level on the isolation base not the fan shaft for proper leveling Additionally the motor and fan shafts must AEE E be level and parallel relative to each other for proper by others alignment NN xX 25252 n oS iet Greenheck Roof Curb for Vektor Systems BN k Continuous Weld or Stitch Weld 6 in minimum stitch weld x 3 1 4 in spacing E lt gt CCo CO lt gt lt 2 lt 2 lt gt Q lt gt lt gt 2 QOQ Meese RRR BS OX SRK PO POO Minimum 6 in weld on each corner hardware by others Concrete Deck Greenheck Roof Curb V Install 1 2 in bolt for Vektor Systems NC 5 1 2 in maximum bolt spacing 4 in maximum spacing from curb corners hardware by others Fa Ta i RE ii
4. applicable precautions Improper installation can result in electric Follow the Canadian Electric Code CEC in shock possible injury due to coming in contact with Canada moving parts as well as other potential hazards 2 The rotation of the wheel is critical It must be free Other considerations may be required if high winds to rotate without striking or rubbing any stationary or seismic activity are present If more information objects is needed contact a licensed professional engineer 3 Motor must be securely and adequately grounded f ing f Paron moving TONNAN 4 Do not spin fan wheel faster than maximum cataloged fan rpm Adjustments to fan speed DANGER significantly effects motor load If the fan RPM is 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 IN Vektor CD Centrifugal Laboratory Exhaust changed the motor current should be checked to make sure it is not exceeding the motor nameplate amps Do not allow the power cable to kink or come in contact with oil grease hot surfaces or chemicals Replace cord immediately if damaged Verify that the power source is compatible with the equipment Never open access doors t
5. is now ready to have gasketing placed in the mounting location between the plenum and the fan After the gasketing has been attached the fans can be lifted and set into place Modular Plenum Isometric View 27 Drain hole 1 in coupling Bolted and gasketed access panels Plenum Installation The figures depicted illustrate three common methods used to install Vektor CD bypass plenums 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 Place 1 2 inch thick x 1 2 inch wide silicone gasket around the perimeter of top edge of curb adhesive side down gasket provided in Vektor CD hardware kit To align holes properly the plenum needs to be centered on the curb When holes are provided in the curb install 316 stainless steel screws provided in all holes Use anti seize gel provided to prevent galling welding of all stainless steel fasteners When holes are not provided in the curb non Greenheck curb Drill 0 28 in diameter holes in curb using bypass air plenum holes as a template Install 5 16 in self tapping screws provided in all the holes 6 Vektor CD Centrifugal Laboratory Exhaust Plenum and Curb to Structural Steel a in bolt typical Weatherhood pee with birdscreen by Greenheck optional B
6. 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 2 Check for bearing alignment and lubrication e Check the V belt drive for proper alignment and tension belt drive 4 Checkrigid coupling for proper alignment and connect between motor shaft and fan shaft direct drive 5 Check all guarding to ensure that it is securely attached and not interfering with rotating parts 6 Check operation of isolation and bypass dampers if supplied for freedom of movement 7 Check all electrical connections for proper attachment 8 Check housing and ductwork if accessible for obstructions and foreign material that may damage the fan wheel e Fill drainage piping trap 10 Check all fasteners set screws and locking collars on the fan bearings drive motor base and accessories for tightness 11 Rotate the fan wheel by hand and assure no parts are rubbing 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 A Centrifugal Centrifugal Backward Inclined Airfoil CW Rotation always viewed from the drive side One of the most frequently enco
7. source should be located and eliminated At each inspection rotate the wheel by hand ten to fifteen revolutions to distribute lubricant on motor and bearings If paint deterioration begins consideration should be given to touch up or repainting Fans with special coatings may require special techniques for touch up or repair 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 40e or the equivalent REMOVING FROM STORAGE 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 Prior to assembly and installation of the Vektor fan and system components inspect the fan assembly to make sure it is in working order 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
8. the roof curb support structure or each section can be placed on individually The method used would be dependent on the lifting capacity for the equipment on site If moving each piece separately onto the roof curb or support structure each section should be joined to its mating part before moving another section into place For a 1x1 system there is only a single plenum section and no multiple plenum assembly would be required Determine the placement of the plenum sections relative to each other Multiple Fan Systems When looking at the individual section one will notice that each plenum section is missing at least one side panel These areas are the locations where the sections are to be joined together If you have two plenum sections then each one would be missing a side panel If you have a three fan system there are three plenum sections The two end plenum sections would each be missing one side panel and the middle section would not have panels on two sides Please refer to the submittal drawing for the orientation of any Bypass Air Plenum BAP dampers or air inlet locations Putting the plenum together After identifying the plenum sections arrangement order one of the two mating sections has weld nuts on the inside of the plenum The assembly hardware stainless steel bolts required to join the sections is located here for shipping purposes These bolts should be removed and set aside prior to placing the mating s
9. E Vektor CD Centrifugal Laboratory Exhaust Plenum and Fan Drainage Piping and Trap Detail by others There are multiple locations for pipe connections one on each plenum section and another on each tubular fan housing located at the bottom of the scroll Each drain should be properly connected to a drainage system to ensure proper disposal of any water or condensate that may occur e Installed piping to have a downward angle to allow for drainage e Fill trap to recommended level before start up Detail of bypass air plenum and blower housing 1 in drain coupling in blower housing and bypass air plenum inch of water k Clean out location Y Dim gt System Pressure m X Dim gt 1 2 System Pressure Dimension of X and Y are inches Note Refer to local codes for proper disposal of potential hazardous drainage Bypass Air Plenum BAP Isolation Damper Access amp Actuator Mounting Depending on the configuration and intended operation of the system supplied every Vektor plenum section may not have a weatherhood and bypass air damper Typically systems that include a fan which is on standby will have one less weatherhood and BAP damper assembly than plenum sections Refer to submittal drawings for additional information The appropriate guard cover needs to be removed for installation inspection and maintenance For Vektor Fans with a We
10. Fan Corporation have been carefully selected for this unit s specific operating condition Caution Changing V belt drive components could result in unsafe operating conditions which may cause personal injury or failure of the following components Fan Shaft Fan Wheel Bearings V belt Motor V Belt Drive Installation Belt Drive 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 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 and allow the belts to set properly 6 With the fan off adjust the belt tension by moving 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 Aligning sheaves with a straight edge Bearing Replacement Both drive bearings are accessible from the ground on all Vektor CD fans Whether direct or belt driven the bearings along with other serviceable drive components belts motors sheaves are accessible by removing the motor cover panel Please contact Greenhe
11. PN 471555 Centrifugal Laboratory Exhaust RN GREENHECK Building Value in Air 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 Vektor CD g Direct or Belt Drive i As The Vektor CD fan is a side inlet centrifugal blower with a high plume dilution nozzle designed for laboratory exhaust systems Available in either direct or belt drive configurations the Vektor CD is capable of up to 14 inches wg of static pressure and 100 000 cfm and can be constructed to AMCA spark B or C specifications All fans are AMCA 210 and 260 certified for flows as well as AMCA 300 for sound The Vektor CD is available in 15 sizes ranging from 12 to 66 inch wheels Each fan has a permanently affixed manufacturer s engraved metal nameplate containing the model number and individual serial number General Safety Information Only qualified personnel should install this fan system 1 Follow all local electrical and safety codes as well Personnel should have a clear understanding of these as the National Electrical Code NEC the National instructions and should be aware of general safety Fire Protection Agency NFPA where
12. R CONTROL 208 230 460 575 V 3 PHASE TRANSFORMER 208 230 460 575 V 1 PHASE 24 115V 1 PHASE MOTOR ISOLATION DAMPER 208 230 460 575 60 3 AGTUATORMOTOR POWER OPEN SPRING CLOSE NOTE If a Variable Frequency Drive is used to control fan speed ueber FIELD WIRING transformer and actuator will not function properly when wired as FACTORY WIRING shown Transformers must be wired independently from VFD control Applications with Variable Frequency Drives VFD 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 diagram above If fan flow motor speed is to be controlled using a VFD the reduced voltage and frequency supplied to the fan will cause control problems with the isolation damper actuator When a 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 Isolation Damper Control Isolation dampers on de energized fans are to be closed to maintain system negative pressure and prevent reverse free wheeling of de energized blower s Isolation dampers shall be opened immediately upon fan energizing IB Vektor CD Centrifugal Laboratory Exhaust EJ Unit Start Up WARNING Disconnect and secure to the Off
13. a bolted panel located on the side of the fan housing 3 Ensure proper wheel settings for radial gap and alignment Refer to page 13 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 System Identification Tags 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 usoa identification tags O S N O can cause reductions in the fan s performance Standard Fan Configurations The following illustration identifies a typcial configuration of the Vektor CD system Greenheck also supplies custom configurations Your system may not be depicted in the drawing shown Refer to submittal drawing GREENHECK 715 359 6171 FLEX CONNECTOR ISOLATION NOZZLE DAMPER XV PLENUM FAN d FH XL FW z Hra ISOLATOR TEN a CURB SQR PRIMARY INLET ROOF CURE EM Vektor CD Centrifugal Laboratory Exha
14. atherhood Access to the bypass air plenum damper and the isolation damper actuator s optional from factory and voltage transformer optional from factory is gained through the removal of the weatherhood guard cover The isolation damper assembly can be removed from its location by unbolting the frame from the plenum and removing the flex connector IB For Vektor Fans without a Weatherhood A guard cover is located on the side of the plenum section Removal of the guard cover gains access to the damper linkages actuator optional from factory and transformer optional from factor The entire bypass damper assembly can be removed through this opening The isolation damper assembly can be removed from its location by unbolting the frame from the plenum and removing the flex connector If the Vektor units were not supplied with optional actuators the dampers have an extended jackshaft for field mounting a customer supplied actuator Motor Disconnect Wiring amp Isolation Damper Wiring Diagram LINE IN 208 230 460 575 V Disconnect is mounted to fan housing 3 PHASE Transformer is mounted to bypass air plenum near isolation damper actuator motor For systems that ship un assembled because of physical size this connection at disconnect of from transformer must be field installed PA Wires with conduit and fitting are provided d pre connected to transformer DISCONNECT OPTIONAL ISOLATION DAMPE
15. ay 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 temperature does not exceed 104 F 40 C the grease should be replaced after 2000 hours of running time Direct drive systems have extended grease lines to lubricate the motor without removal of any guarding Bearings 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 Greenheck Fan Corporation recommends bearings to be relubricated quarterly at a minimum All Vektor CD fans use Mobil Mobilith SHC 100 synthetic grease conforming to NCGI Grade 2 Never mix greases made with different bases 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 IH Vektor CD Centrifugal Laboratory Exhaust Service V Belt Drives The V belt drive components when supplied by Greenheck
16. ck Fan Corporation for specific instructions on the replacement of the bearings specific for each Vektor CD fan Please include fan identification numbers with the request to ensure that proper instructions are received Note Bearing replacement could require moving of fan wheel See Radial Gap Overlap amp Alignment section to re align wheel upon bearing reinstallation Radial Gap Overlap amp 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 Radial gap is adjusted by loosening the inlet cone ring bolts and centering the cone ring 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 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 Overlap on double width fans is set by having equal spacing on each side of the wheel J Overlap Inlet Cone to Backplate Distance A Dimension Unit Size inches 54 18 th 60 20 74e zh 66 22 V
17. e ductwork Vektor Field Coating Repair Procedure for Scratched Areas Standard coating and color for the Vektor laboratory exhaust system is Greenheck s Hi Pro Polyester Gray 041 The procedure below details the correct method for repairing minor scratches in the coating Each Vektor unit is supplied with a repair kit for use after the initial installation The kit includes 1 pint Kem Kromik Universal Metal Primer 1 pint industrial enamel Industrial 041 Gray 4 disposable foam brushes 1 sheet of sandpaper 2 tech data sheets for the two paints 1 repair procedure 1 Scuff affected area to be repaired using medium sandpaper provided Feather the edges 2 Clean affected area to be touched up using an alkaline based cleaner and rinse 3 Apply Kem Kromik primer using the 1 inch foam brush provided Follow technical data sheet instructions 4 Allow primer to dry a minimum of 2 1 2 hours before top coating 5 Topcoat with Industrial enamel using 1 inch foam brush provided Follow technical data sheets instructions Allow painted units to air dry and cure before putting into service See enclosed Technical Data sheets for detailed drying and cure schedules at different temperatures To order additional coating repair kits please reference Greenheck s part number HAZ2037 HI PRO GRAY FIELD DAMAGE REPAIR KIT Please contact factory with your fan s serial number for colors other than our standard Gray 041 E
18. ections together The bolts are located every 6 to 10 inches to provide the best seal between the mating sections Before moving the sections into position gasketing must be installed to seal the plenum sections against leakage This silicone gasketing is supplied with the fans and only needs to be applied to one of the two mating plenum sections The bands or strips of gasketing should be attached around the perimeter of the joining face and with an additional strip making a triangular area in each corner After the gasketing has been attached and the hardware has been removed place the two mating sections together The stainless steel bolts which were set aside earlier are now run first through the holes of the plenum section without the weld nuts and tighten into the weld nuts on the other plenum section Vektor CD Centrifugal Laboratory Exhaust EJ Plenum Assembly continued An additional side or access panel may need to be removed in order to gain access to the inside of the plenum assembly The bolts should be tightened in an even and consistent manner as to pull the two sections together and compress the gasketing After the plenum is assembled Use all provided hardware to tighten and join the mating sections together Any side panels removed to gain access to the interior of the plenum should be reattached The assembled plenum has holes in the curb cap to fasten the plenum to the already installed roof curb The plenum
19. ed on the fan housing Do not lift this assembly by the lifting lugs located on the windband Connect fan to plenum using Excelon flex connector found in the Vektor CD hardware kit Fan Stack Installation Stack Extension P di Fan Assembly f If fan requires a stack or stack extension install on fan before installing nozzle and windband Place gasketing between any sections blower housing and initial stack Use lifting lugs to position each piece into place Attach stack or stack extension to blower housing using 316 stainless steel bolts provided through flanges aligning bolt patterns Use anti seize gel provided to prevent galling welding of all stainless steel fasteners Greenheck strongly recommends the use of guy wires on any system that incorporates the usage of a stack extension including inline attenuators Subsequent guy wires are to be designed and installed by others IB Windband Installation Using the windband lifting lugs place Four 4 lifting windband over blower lugs located discharge alignin at top ot scnarge g g windband windband support bracket holes with bolt holes in blower housing Attach windband to blower discharge using 316 stainless steel bolts provided through support brackets welded to the inside of the windband Use anti seize gel provided to prevent galling welding of all stainless steel fasteners Bypass Air Plenum Installation Span determines t
20. eness Faulty Belts 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 through the access panel located on the side of each fan s tubular housing 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 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 10 in sec peak 0 08 in sec direct drive velocity filter in at the fan rom per AMCA Standard 204 These vibration signatures are a permanent record of how the fan left the factory and are available upon request Serviceable Components Windband Isolation Damper Bypass Air Weatherhood Bypass Damper Roof Curb or Structural Support Routine Maintenance amp Operation 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 Bypass air dampers should be c
21. fier for every unit S N MARK Mark Customer supplied identification 14 Vektor CD Centrifugal Laboratory Exhaust H Maintenance Log Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes B8 Vektor CD Centrifugal Laboratory Exhaust 15 Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of three years 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 Catalog Vektor CD
22. h a manner as to keep from scratching or chipping the coating Damaged finish may reduce ability of fan to resist corrosion See coating repair section of this manual for details involving touch up of damaged surfaces Fans should never be lifted by the shaft fan housing motor belt guard weatherhood windband or other accessories Storage Fans are protected against damage during shipment If the unit cannot be installed and operated immediately precautions need to be taken to prevent deterioration of the unit during storage The user assumes responsibility of the fan and accessories while in storage The manufacturer will not be responsible for damage during storage These suggestions are provided solely as a convenience to the user INDOOR The ideal environment for the storage of fans and accessories is indoors above grade in a low humidity atmosphere which is sealed to prevent the entry of blowing dust rain or snow Temperatures should be evenly maintained between 30 F 1 C and 110 F 43 C wide temperature swings may cause condensation and sweating of metal parts All accessories must be stored indoors in a clean dry atmosphere 2 Vektor CD Centrifugal Laboratory Exhaust Remove any accumulations of dirt water ice or snow and wipe dry before moving to indoor storage To avoid sweating of metal parts allow cold parts to reach room temperature To dry parts and packages use a portable electric heate
23. he number of lifting lugs to be used during installation Lifting lugs located at top of bypass air plenum No of Lifting Lugs Minimum of 4 lifting lugs Span 12 inches or less 12 to 18 inches 18 inches or greater Minimum of 6 lifting lugs Minimum of 8 lifting lugs Guy Wire Locations 1 1 4 inch thru hole typical NOTE Guy wires to be supplied by others Fastening to building structure to be provided and engineered by others If your fan requires stack extensions the use of guy wires is recommended See drawing for guy wire connection locations Note Keep 36 inches minimum spacing around unit to provide adequate clearance for servicing or repairing unit Vektor CD Centrifugal Laboratory Exhaust Duct Connections to the Bypass Air Plenum BAP Connecting primary exhaust air ducts is allowed through the roof curb or through one or more of the side access panels To reduce the potential for system effects in the plenum the duct connection should be sized to have a maximum air velocity of 1500 fpm when entering When attaching ductwork to the plenum care should be taken to ensure a tight fit and proper seal to prevent leakage of the contaminated airstream Ductwork that is a different size than the removable access panel can either use a transition to the plenum s opening size or the access panel can be field modified by cutting an opening to the size of th
24. hecked for freedom of operation and wear 3 Wheel housing bolts and set screws on the entire fan should be checked for tightness 4 Any dirt accumulation on the wheel or in the housing should be removed to prevent unbalance and possible damage 5 Inspect fan impeller and housing looking for fatigue corrosion or wear 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 Fan Operation All fans should be run every thirty 30 days or at least bumped every thirty days It is preferred that each fan is run as this causes all electrical and mechanical components to get up to temperature displacing any formed condensation redistributes load on bearings and redistributes grease in the bearings motor and shaft bearings 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 vibrat
25. ion When replacing V belts on multiple groove drives all belts should be changed to provide uniform drive loading Use a set of matched belts whenever possible 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 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 halfway between sheave 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 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 Belt Span 64 Deflection Belt Span Vektor CD Centrifugal Laboratory Exhaust 11 Motors Motor maintenance is generally limited to cleaning and lubrication Cleaning should be limited to exterior surfaces only Removing dust and grease buildup on the motor housing assists proper motor cooling Never wash down motor with high pressure spr
26. o a duct while the fan is running Receiving Upon receiving the product check to make sure all items are accounted for by referencing the bill of lading to ensure all items were received Inspect each crate for shipping damage before accepting delivery Notify the carrier if any damage is noticed The carrier will make notification on the delivery receipt acknowledging any damage to the product All damage should be noted on all the copies of the bill of lading which is countersigned by the delivering carrier A Carrier Inspection Report should be filled out by the carrier upon arrival and the Traffic Department If damaged upon arrival file claim with carrier Any physical damage to the unit after acceptance is not the responsibility of Greenheck Fan Corporation Unpacking Verify that all required parts and the correct quantity of each item have been received including accessory kit containing flex connector gasketing etc If any items are missing report shortages to your local representative to arrange for obtaining missing parts Sometimes it is not possible that all items for the unit be shipped together due to availability of transportation and truck space Confirmation of shipment s must be limited to only items on the bill of lading Handling Fans are to be rigged and moved by the lifting brackets provided or by the skid when a forklift is used Location of brackets varies by model and size Handle each piece in suc
27. oose pulleys Assure motor is correct horsepower and not tripping overload protector Lubrication Check for excessive or insufficient grease in the bearing Wheel unbalance Duct system has more Static pressure wrong or less restriction than anticipated Electrical supply Overheated bearing Machanieal 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 are especially prone to unbalance Check wheel balance rebalance if necessary Excessive vibration System unbalance 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 Unit Identification The tag below 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 Tags are mounted in an area which is clearly visible usually on the side of the fan housing Model General description of fan HGREENHECK S N Serial Number assigned by Greenheck MODEL which is a unique identi
28. provides additional AMCA Publication 410 96 Safety Practices for Users and information describing the equipment fan performance Installers of Industrial and Commercial Fans provides available accessories and specification data additional safety information This publication can be obtained from AMCA International Inc at www amca org ER GREENHECK Building Value in Air Phone 715 359 6171 Fax 715 355 2399 e E mail gfcinfo greenheck com Website www greenheck com I 471555 Model Vektor CD IOM Rev 1 February 2008 Copyright 2008 O Greenheck Fan Corp
29. r to get rid of any moisture build up Leave coverings loose to permit air circulation and to allow for periodic inspection The unit should be stored at least 372 in 89 mm off the floor on wooden blocks covered with moisture proof paper or polyethylene sheathing Aisles between parts and along all walls should be provided to permit air circulation and space for inspection OUTDOOR Fans designed for outdoor applications may be stored outdoors if absolutely necessary Roads or aisles for portable cranes and hauling equipment are needed The fan should be placed on a level surface to prevent water from leaking into the fan The fan should be elevated on an adequate number of wooden blocks so that it is above water and snow levels and has enough blocking to prevent it from settling into soft ground Locate parts far enough apart to permit air circulation sunlight and space for periodic inspection To minimize water accumulation place all fan parts on blocking supports so that rain water will run off Do not cover parts with plastic film or tarps as these cause condensation of moisture from the air passing through heating and cooling cycles Fan wheels should be blocked to prevent spinning caused by strong winds Inspection and Maintenance during Storage While in storage inspect fans once per month Keep a record of inspection and maintenance performed see page 15 If moisture or dirt accumulations are found on parts the
30. untered problems with Centrifugal Fans are 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 IJ Vektor CD Centrifugal Laboratory Exhaust leads Single phase motors can be reversed by changing internal connections as described on the motor label or wiring diagram 2 If the fan has inlet vanes they should be partially closed to reduce power requirements This is especially important if the fan is designed for a high temperature application and is being started at room temperature 3 Fans with multi speed motors should be checked on low speed during initial start up 4 Check for unusual noise vibration or overheating of bearings Refer to the Troubleshooting section of this manual if a problem develops 5 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 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 The most common sources of vibration are listed below Wheel Unbalance Drive Pulley Misalignment Incorrect Belt Tension Bearing Misalignment Mechanical Loos
31. ust Vektor CD Arrangements Hace m Ls Vektor CD Opposed Fan System Vektor CD Single Fan System a C C rj T mas md Vektor CD Vektor CD Dual Fan System Triple Fan System Rigging Assembly Instructions 1 Use standard lifting and rigging practices 2 All lifting lugs on each component must be utilized at the same time 3 Plenum blower and windband are to be kept level during installation d Chains Spreader Bar I Pi pd Chains Lifting Lugs Lifting Lugs Bm Bypass Air CINE Plenum Roof Curb Structural Support Gasketing Eg Curb Installations Bases Foundation and Isolation Greenheck supplies gasketing material for all multi Critical to every fan installation is a strong level section curbs and or plenums Install gasketing prior foundation A reinforced poured concrete pad with to bolting split curbs and or plenums together a structural steel base or inertia base provides an excellent foundation Structural bases must be sturdy enough with welded construction to prevent flexing and vibration
32. ypass Air Plenum in silicone gasket 36 in bolt 3 by Greenheck typical z s by Greenheck gt Pj a m Fiberglass Insulation Bolt or weld in field Roof Curb by others V lt Structural Support by others Plenum no Curb to Channel Base in bolt typical by Greenheck Weatherhood i with birdscreen itm i optional in silicone gasket by Greenheck g Field drilled amp bolted by others L Structural Support by others Fan Plenum and Curb to Roof Deck in self tapping screws by Greenheck Weatherhood with birdscreen optional Bypass Air Plenum As in silicone gasket by Greenheck 36 in bolt c typical g y Fiberglass by Greenheck m Insulation Bolt or weld in field pet Roof Curb by others ln Roof Line m Roofing felt x Exhaust Duct amp material by others by others Fan Installation Fan Housing Installation Lines of attachment are to be lifted in the vertical direction to prevent damage Spreader bars are recommended Lifting lugs located on the four corners of the base If the windband is shipped attached to the fan housing or if the windband is secured to the fan housing prior to mounting to the plenum the fan windband assembly should be lifted by the lifting lugs locat
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