Greenheck Fan 474051 User's Manual
Contents
1. 3 Grease may be forced out of the bearing seals during initial start up This is a normal self purging feature of this type of bearing EJ Model BCSW FRP Vibration Excessive vibration is the most frequent problem experienced during initial start up Common Sources of Vibration Wheel Unbalance Drive Pulley Misalignment Incorrect Belt Tension Bearing Coupling Misalignment Faulty Belts Drive Component Unbalance Poor Inlet Outlet Conditions 1 2 3 4 5 Mechanical Looseness 6 7 8 9 Foundation Stiffness Left unchecked excessive vibration can cause a multitude of problems including structural and or component failure Many of these conditions can be discovered by careful observation Refer to the troubleshooting section of this manual for corrective actions If observation cannot locate the source of vibration a qualified technician using vibration analysis equipment should be consulted If the problem is wheel unbalance the wheel should be sent back to the factory to be properly rebalanced Greenheck performs a vibration test on all centrifugal fans before shipping Three vibration readings are taken on each bearing in the horizontal vertical and axial directions The allowable maximum vibration for belt drive units is 0 078 in sec peak 0 05 in sec direct drive velocity filter in at the fan RPM per AMCA Standard 204 These vibration signatures are a permanent record of how the fa2. 1 0 5 1500 12 5 4 3 2 1 0 5 2000 12 3 2 2 1 0 5 0 25 2500 12 2 2 1 0 5 0 25 3000 12 2 1 0 5 0 25 3500 12 1 0 5 0 25 4000 12 0 5 0 25 5000 12 0 25 of shots 4 8 8 10 16 25 41 57 Suggested initial greasing interval is based on 12 hour per day operation and 160 F maximum housing temperature For continuous 24 hour operation decrease greasing interval by 50 e f possible relubricate with grease while in operation without endangering personnel e For ball bearings operating relubricate until clean grease is seen purging at the seals Be careful not to unseat the seal by over lubricating e 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 e 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 e Adjust lubrication frequency based on condition of purged grease e A high quality lithium base grease conforming to NLGI Grade 2 consistency is recommended e The use of synthetic lubricants will increase lubrication intervals by approximately three 3 times WARNING Lubricate bearings prior to periods of extended shutdowns or storage and rotate shaft monthly to aid in preventing corrosion If the fan is stored more than three months the bearings should be purged with new grease p
3. Drives 0 0 c cee ee 7 Unit Start Up is eria nanana aa enlaces oa ded 8 VIDratiONni sissa ea aad e eects Stee ewe de eae 8 Routine Maintenance 0000 ee eee 9 10 MOtors 0 0 c cece eee 9 Shat Bearings sista one adage aed G 9 V Belt Drive 2 0 ce ee 10 Unit Identification 00 cee 10 Parts Estes a ine ede d Becaneta ed irer ear d Be Se 10 Troubleshooting e e 06 dees oe ee ogee ees 11 Maintenance Log eee ee eee eee Backcover Warranty eccstcne ede a acm a tcc Backcover CAUTION When installing a fan ensure the proper protective devices are used to protect personnel from moving parts and other hazards A complete line of protective accessories are available from Greenheck including belt guards shaft guards and electrical disconnects Electrical Disconnects All fan motors should have disconnects located in close visual proximity to turn off electrical service Service disconnects shall be locked out when maintenance is being performed Moving Parts All moving parts must have guards to protect personnel Refer to local codes for requirements as to the number type and design Fully secure fan wheel before performing any maintenance The fan wheel may start free wheeling even if all electrical power has been disconnected Before the initial start up or any restart check the belt and shaft guards and the access doors to ensure that they are installed and secure Model BCSW FR
4. fittings should be greased in accordance with the manufacturer s recommendations When motor ambient temperature does not exceed 104 F 40 C the grease should be replaced after 2000 hours of running time 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 Shaft 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 Refer to the following chart and the manufacturers instructions for grease types and intervals for various operating conditions Never mix greases made with different bases This will cause a breakdown of the grease and possible failure of the bearing Recommended Fan Bearing Lubrication Schedule Standard Grease Lubrication Schedule in Months Bearing Bore inches Fan RPM 1 1 1 6 26 8 0 316 47s 1 1 1 2 3 3 4 5 To 250 12 12 12 12 12 12 10 8 500 12 12 10 10 8 7 5 4 750 12 9 8 7 6 4 3 2 1000 12 7 6 5 4 3 2 1 1250 12 6 5 4 3 2
5. P JE Installation Installations with inlet or discharge configurations that deviate from this standard may result in reduced fan performance Restricted or unstable flow at the fan inlet can cause pre rotation of incoming air or uneven loading of the fan wheel yielding large system losses and increased sound levels Free discharge or turbulent flow in the discharge ductwork will also result in system effect losses Refer to the following diagrams for the most efficient installation conditions Ducted Inlet Installations Inlet Duct Turns Installation of a duct turn or elbow too close to the fan inlet reduces fan performance because air is loaded unevenly into the fan wheel To achieve full fan performance there should be at least three fan wheel diameter between the turn or elbow and the fan inlet POOR Turning Vanes Inlet Spin Inlet spin is a frequent cause of reduced fan performance The change in fan performance is a function of the intensity of spin and not easily defined The best solution is proper duct design and airflow patterns Turning vanes reduce the effects of inlet spin Turning Vanes EJ Model BCSW FRP Ducted Outlet Installations Discharge Duct Turns Duct turns located near the fan discharge should always be in the direction of the fan rotation Fan performance is reduced when duct turns are made immediately off the fan discharge To achieve cataloged fan performance there should
6. Part 474051 A GREENHE CK Fiberglass Centrifugal Fan 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 Model BCSW FRP General Safety Information Only qualified personnel should install this fan Personnel 1 Follow all local electrical and safety codes as well should have a clear understanding of these instructions as the National Electrical Code NEC the National and should be aware of general safety precautions Fire Protection Agency NFPA where applicable Improper installation can result in electric shock possible Follow the Canadian Electric Code CEC in injury due to coming in contact with moving parts as well Canada as other potential hazards Other considerations may 2 The rotation of the wheel is critical It must be free be required if high winds or seismic activity are present to rotate without striking or rubbing any stationary If more information is needed contact a licensed objects professional engineer before moving forward 3 Motor must be securely and adequately grounded DANGER 4 Do not spin fan wheel faster than max cataloged fan rpm Adjustmen
7. V belt drive for proper alignment and tension NO oO Ss Check all the guarding if supplied for being securely attached and not interfering with rotating parts 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 10 Check that the drain is connected or plugged and the housing is being properly drained 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 Additional Steps for Initial Start Up 1 Check for proper wheel rotation by momentarily energizing the fan Rotation Woe is always determined by viewing the wheel from the drive side and should correspond to the rotation decal affixed to the unit 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 Clockwise Rotation Always viewed from the drive side 2 Check for unusual noise vibration or overheating of bearings Refer to the Troubleshooting section of this manual if a problem develops
8. alance rebalance if necessary Coupling misalignment Check alignment between coupling motor and fan shafts Any adjustments should be made per coupling manufacturer s instructions Shim only under motor Always check motor amps and compare to nameplate rating Excessive fan speed may overload the motor and result in motor failure Do not exceed the maximum cataloged RPM of the fan NOTE Always provide the unit model and serial numbers when requesting parts or service information Model BCSW FRP Ey 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 Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory transportation prepaid Motors are warranted by the motor manufacturer for a period of one year Should motors furnished by Greenheck prove defective during this period they should be returned to the nearest authorized motor service station Greenheck will not be responsible for any removal or installation costs As a result of our commitment to continuous improvement Greenheck reserves t
9. be at least three equivalent duct diameters of straight ductwork between the fan discharge and any duct turns Length of Straight Duct Non Ducted Installations Inlet Clearance Installation of a fan with an open inlet too close to a wall or bulkhead will cause reduced fan performance It is desirable to have one fan wheel diameter between parallel fan units and a minimum of three fourths of a wheel diameter between the fan inlet and the wall One fan One fan heel wheel 3 gt diameter diameter Parallel Fan Installation Free Discharge Free or abrupt discharge into a plenum results in a reduction in fan performance The effect of discharge static regain is not realized Bases Foundation and Isolation In order to assure continued alignment a high strength non shrink epoxy grout is recommended to provide the desired mechanical properties for support of the fan This type of support ensures the appropriate transmission of static and dynamic loads to the equipment foundation To eliminate vibration and noise from being transferred to the building vibration isolators should be used The fan is mounted directly on the base and must be supported for the entire length of the fan base angle Isolators are installed between the base and the foundation After the fan and isolators are installed the entire assembly must be leveled Position the level on the base not the fan shaft for proper leveling Ad
10. ditionally the motor and fan shafts must be level and parallel relative to each other for proper alignment Belt Guards If the belt guard is not factory mounted then it must be field mounted Brackets and mounting hardware are the responsibility of the installer Mounting bracket locations vary with motor mounting position arrangement and fan type The bearing supports and fan structure are used in most instances and when the motor is not mounted to the fan itself a bracket should also be located near it This information is intended as only a guide and actual field conditions may dictate another mounting location for the guard brackets Refer to local codes for securing guarding Drain Connection Make sure to either connect the drain or keep it plugged Never leave the drain open to drain freely The drain line must be installed using either a U trap arrangement or an equivalent method drain leg is submerged in liquid To obtain a proper seal the leg length must be greater than the system pressure drop Ductwork Stacks All ductwork and or stacks must be self supporting and independent of the fan The fan inlet and outlet are not designed to support the connecting duct or stack The use of flexible connectors is recommended to limit the transmission of stress to the fan Excessive pressure applied when bolting a flange connection may cause damage to the fan housing or flange Rotatable Housings It may be necessary to
11. earing s Lubricate bearings Tighten collars and fasteners Wheel unbalance Fan Duct system Fan Duct system Duct system has more or less Clean all dirt off wheel Check wheel balance rebalance if necessary Check wheel for correct rotation Increase fan speed See page 3 Decrease fan speed Resize ductwork Access door filters grilles not installed Change obstructions in system Use correction factor to adjust High Horsepower Wrong restriction than for temperature altitude Resize ductwork Change fan speed anticipated Fan Check rotation of wheel Reduce fan speed Duct system Electrical supply Resize ductwork Check proper operation of face and bypass dampers Check filters and access doors Check fuses circuit breakers Check for switches turned off or disconnected Check for correct supply voltage Excessive Vibration Fan Doesn t Operate Drive Check for broken belts Tighten loose pulleys Assure motor is correct horsepower and not tripping overload Motor protector Lubrication Check for excessive or insufficient grease in the bearings Overheated Shaft Repl 4 d bearing Reli 3 ive belt t 2 Ali Bearing Mechanical eplace damaged bearing Relieve excessive belt tension Align bearings Check for bent shaft Belts Adjust tightness of belts Replacement belts should be a matched set System unbalance Check alignment of shaft motor and pulleys Check wheel b
12. he 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 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 The fan should not be removed from its shipping crate before being moved to its final location Lifting straps should only be attached to the structural steel base or clevis pins can be used if the fan skid has lifting holes in all four corners If lifting lugs are provided on the fan housing only use to lift the housing and not the entire fan Handle in such a manner to avoid scratching or chipping Special care must be taken to avoid causing damage from stress or shock Damaged finish may reduce ability of the fan to resist corrosion Fans should never be lifted by the shaft fan housing motor belt guard windband or accessories Storage e Rotate fan wheel mont
13. he right to change specifications without notice Greenheck Catalog Fiberglass Centrifugal Fans Model AMCA Publication 410 96 Safety Practices for Users and BCSW FRP provides additional information describing the Installers of Industrial and Commercial Fans provides equipment fan performance available accessories and additional safety information This publication can be specification data obtained from AMCA International Inc at www amca org AIGREENHECK Building Value in Air Phone 715 359 6171 Fax 715 355 2399 e E mail gfcinfo greenheck com e Website www greenheck com A 474051 e BCSW FRP Rev 1 November 2010 Copyright 2010 Greenheck Fan Corporation
14. hly and purge bearings once every three months Energize fan motor once every three months Store belts flat to keep them from warping amp stretching Store unit in location which does not have vibration After storage period purge grease before putting fan into service If storage of fan is in a humid dusty or corrosive atmosphere rotate the fan and purge the bearings once a month Improper storage which results in damage to the fan will void the warranty H Model BCSW FRP 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 7 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 Remove any accumulations of dirt water ice or snow and wipe dry before moving to indoor storage To avoid sweating of metal parts a
15. llow cold parts to reach room temperature To dry parts and packages use a portable electric heater 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 31 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 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 amp Maintenance during Storage While in storage inspect fans once per month Keep a record of inspection and maintenance performed If moisture or dirt accumulations are found on parts the s
16. n left the factory and are available upon request Generally fan vibration and noise is transmitted to other parts of the building by the ductwork To eliminate this undesirable effect the use of heavy canvas connectors is recommended If fireproof material is required Flexweave 1000 Type FN 30 can be used Routine Maintenance Once the unit has been put into operation a routine maintenance schedule should be set up to accomplish the following 1 Lubrication of bearings and motor see below 2 Wheel housing bolts and set screws on the entire fan should be checked for tightness 3 Any dirt accumulation on the wheel or in the housing should be removed to prevent unbalance and possible damage 4 Springs should be checked for breaks and fatigue Rubber isolators should be checked for deterioration 5 Inspect fan impeller and housing looking for fatigue corrosion or wear When performing any service to the fan disconnect the electrical supply and secure fan impeller 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 Never wash down motor with high pressure spray Greasing of motors is only intended when fittings are provided Many fractional motors are permanently lubricated for life and require no further lubrication Motors supplied with grease
17. om the end of the fan shaft and assure that it is free of nicks and burrs 2 Check fan and motor shafts for parallel and angular alignment 3 Slide sheaves on shafts do not drive sheaves on as this may result in bearing damage 4 Align fan and motor sheaves with a straight edge or string and tighten 5 Place belts over sheaves Do not pry or force belts as this could result in damage to the cords in the belts 6 Adjust the tension until the belts appear snug Run the unit for a few minutes see section on unit start up and allow the belts to seat properly 7 With the fan off adjust the belt tension by moving the motor base See belt tensioning procedures in the maintenance section of this manual When in operation the tight side of the belts should be ina straight line from sheave to sheave with a slight bow on the slack side Aligning sheaves with a straight edge Te LTA Proper sheave alignment Improper sheave alignment Model BCSW FRP Unit Start Up 1 Disconnect and lock out all power switches to fan See warning below 2 Check all fasteners set screws and locking collars on the fan bearings drive motor base and accessories for tightness 3 Rotate the fan wheel by hand and assure no parts are rubbing Check for bearing alignment and lubrication Check for coupling alignment Arr 8 only Check the
18. ource should be located and eliminated At each inspection rotate the wheel by hand ten to fifteen revolutions to distribute lubricant on motor 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 Table of Contents General Information ReceMings ea ccna dig eae atereca pareve esas ec erence EERE E 2 Hangin seres kt ced Eann aden ceetis d 2 Stora ia beroa a sega cir soins Henle eae nee Gre 2 Installation Recommendations BCSW FRP 2000 c cece 4 BaSS oroso diosa aroan i nnna eee bende aad 5 Belt GuardS 00 ccc ee 5 Drain Connections 000e cece eee eee 5 Ductwork Stacks 0 0 00 eee eee 5 Rotatable Housing 000seeeeeeeeeee 5 Radial gap overlap amp wheel alignment 6 Flexible Couplings 000seeee cece eeeeee 7 V Belt
19. rior to start up Model BCSW FRP EEJ 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 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 ee sheaves After replacing 64 belts insure that slack in each belt is on the same side of the drive Belt dressing should never be used lt Belt Span Do not install new belts on worn sheaves If the sheaves have grooves worn in them they must be replaced before new belts are installed The proper tension for operating a V belt drive is the lowest tension at which the belts will not slip at peak load conditions Check belt tension before start up and after the first 24 hours of operation The belt tension should also be checked periodically thereafter Parts List Outlet Flange Ho
20. rotate the scroll of the fan to achieve a different discharge position than what was originally supplied Fiberglass fan model BCSW FRP sizes 6 25 arr 4 and 10 Class I Il Ill and IV has the flexibility to be rotated in the field This is accomplished by removing the housing bolts rotating the housing to a new discharge position and reinstalling the bolts Model BCSW FRP J Radial Gap Overlap and Wheel Alignment Efficient fan performance can be maintained by having the correct radial gap overlap and wheel alignment These items should be checked after the fan has been in operation for 24 hours and before start up after the unit has been serviced a Impeller Wheel Inlet Cone N Overlap FF Impeller Wheel wom TY ZINI i Radial i E Gap 1i 7 whee T all 7 ON E Overlap lt A A Inlet Cone BCSW FRP BCSW FRP Sizes 6 thru 10 Sizes 15 thru 73 Tolerance Tolerance Tolerance Tolerance Tolerance Tolerance in mm in mm in mm 1 10 2 1 16 Radial Gap is adjusted by loosening the housing bolts Overlap is adjusted by loosening the wheel hub from and centering the inlet cone on the wheel If additional the shaft and moving the wheel to the de
21. sired position adjustment is required to maintain a constant radial along the shaft The transition between the inlet cone gap loosening the bearing bolts and centering the and wheel should be as shown there is a smooth feel wheel is acceptable as a secondary option to the profile when moving from one component to the other GI Model BCSW FRP A Flexible Couplings Arr 8 Only Check for misalignment between the coupling halves Parallel and angular misalignment and separation gap are illustrated below Refer to coupling manufacturer s installation instructions for allowable misalignment and separation gap tolerances When correcting for misalignment using shims the shims should only be located under the motor Do not place shims under the shaft bearings After aligning procedure check for tightness of all coupling component pieces and ensure that they are clean from dirt and debris Angular Misalignment Separation Gap V Belt Drives The V belt drive components when supplied by Greenheck Fan Corporation have been carefully selected for this unit s specific operating condition 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 1 Remove the protective coating fr
22. ts 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 CAUTION 5 Do not allow the power cable to kink or come in contact with oil grease hot surfaces or chemicals Replace cord immediately if damaged Always disconnect power before working on or near a fan Lock and tag the disconnect switch or breaker to prevent accidental power up When servicing the fan motor may be hot enough to cause pain or injury Allow motor to cool before servicing 6 Verify that the power source is compatible with the equipment AUTION f CAUTID 7 Never open access doors to a duct while the fan is Precaution should be taken in explosive running atmospheres A Fiberglass Centrifugal Fan EE 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 Impact damage will appear as whitening of the surface or star shaped cracks or crazes If this damage is limited to the exterior surface of the fan it may be superficial The fan should not be installed until fully repaired by an authorized repairman All damage should be noted on all t
23. using Inlet Cone Wheel lt Access Door with Gasket Base Housing Foot Angle 4 EI Model BCSW FRP Belt Span Gasket Backplate y Shaft ae Unit Identification This tag is an example of an identification label on the fan The information provides general details about the fan as well as containing specific information unique to the unit When contacting your Greenheck representative with future needs or questions please have the information on this label available HGREENHECK MODEL S N MARK Model S N Serial Number assigned by Greenheck which is a unique identifier for every unit General description of fan Mark Customer supplied identification Tags are mounted on the drive frame in an area which is clearly visible usually near the fan outlet on the drive side of the fan The exact tag location may differ due fan model and size Shaft Guard Bearings ST J Shaft Belt Pulley Guard Motor 4 Pulley X Q f Belt Belt Guard Cover Adjustable Motor Slide Base fA Troubleshooting Problem Excessive Noise Low CFM High CFM Static Pressure Cause Wheel rubbing inlet Corrective Action Adjust wheel Tighten wheel hub or bearing collars on shaft Tighten Sheaves on motor fan shaft Adjust belt tension Align V belt drive sheaves properly see V Belt Drives section Replace worn belts or sheaves Bearings Replace defective b
Download Pdf Manuals
Related Search