Greenheck Fan Model SFD Fan User Manual
Contents
1. i 2 Install motor pulley to the motor shaft and install 5 Install drive belt s Belts should not be forced motor to the motor plate Pre punched holes are over pulleys Align motor and shaft pulleys witha provided for most common motor frame sizes straight edge Tighten all set screws oe 3 If supplied install taperlock bushing into 6 Adjust belt tension shaft pulley See page 6 for belt tensioning instructions PJ Centrifugal Utility Fans A Installation Inspect the unit for any damage and report it to the shipper immediately Also check to see that all accessory items are accounted for Move the fan to the desired location and fasten securely through mounting holes provided in the base angles The unit must be set level shimming may be necessary Flexible duct connections and vibration isolators should be used where noise is a factor The motor voltage and ampere rating must be checked for compatibility with the electrical supply prior to final electrical connection Supply wiring to the fan must be properly fused and conform to local and national electrical codes The discharge is factory set as specified by customer order however it can be rotated to other discharge positions in the field if necessary Removal of the housing bolts allows the discharge to be rotated to the clockwise positions below For TAD BD and BAD discharge positions a portion of the frame angle must be removed Clockwise r2. friction and wear transmission and dissipation of heat extended bearing life and prevention of rust In order for a lubricant to fulfill these tasks the proper grease applied at regular intervals is required See the recommended bearing lubrication schedule below If unusual conditions exist temperatures below 32 F or above 200 F moisture or contaminants more frequent lubrication is required Relubrication Schedule in Months Standard Grease j fan _____Bearing Bore inches 500 12 12 n 10 8 750 12 9 8 7 6 1000 12 7 6 5 4 1250 12 6 5 4 3 1500 12 5 4 3 2 2000 12 3 3 2 1 _ 2500 12 2 2 1 05 3000 12 2 1 05 025 so m 1 os 025 x 4000 12 05 025 x x 5000 12 025 x x x Number mrt fe fs w 6 Centrifugal Utility Fans e 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 e 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 in chart for bore size e For conditions including high temperatures moisture dirt or excessive vibration consult
3. the factory for a specific lubrication interval for your application e Lubricant should be a high quality lithium complex grease conforming to NLGI Grade 2 Factory recommends Mobilux EP 2 e The use of synthetic lubricants will increase lubrication intervals by approximately 3 times In addition to lubricating the bearings at specified intervals set screws in the bearing collars should be checked for tightness A bearing collar which has loosened will cause premature failure of the fan shaft Fasteners attaching the bearings to the drive frame should also be checked Motor Maintenance Belt amp Direct Drive Motor maintenance is generally limited to cleaning and lubrication where applicable Cleaning should be limited to exterior surfaces only Removing dust and grease buildup on the motor housing assures proper motor cooling 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 water or solvents Many fractional horsepower 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 Wheel and Fastener Maintenance Wheels require very little attention when exhausting clean air however air heavily laden with grease or dirt will tend to accumulate on the wheel causing unbalance Wheels exhausting
4. to avoid unnecessary belt wear noise vibration and power loss Motor and drive shafts must be parallel and pulleys in line as shown below Too Ny i lt ee Wrong Wrong Right The adjustable motor pulley is set at the factory for the fan RPM specified by the customer Fan RPM can be increased by closing or decreased by opening the adjustable motor pulley Multigroove variable pitch pulleys must be adjusted an equal number of turns open or closed Any increase in fan speed represents a substantial increase in load on the motor To avoid motor overheating and possible burnout motor load amperes should always be checked and compared to nameplate rating when fan speed is increased Wheels Wheels must rotate freely and not rub on the inlet venturi Model SWB wheels overlap the inlet venturi as shown in Figure 1 Refer to the SWB fan wheel overlap and radial gap chart for proper dimensions Models SFD and SFB wheels do not overlap the venturi but have a gap between the inlet venturi and the wheel Fig 2 Wheel position is preset at the factory and the unit is test run Wheel movement may occur during shipment or installation and wheel alignment may be necessary Overlap Gap a8 Ko Wheel Wheel m a Model SWB Model SFD or SFB Fig 1 Fig 2 On belt drive units c
5. Part 455308 A GREENHE CK Centrifugal Utility Fans Building Value in Air Model SWB Series 100 200 and 300 Models SFB and SFD 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 Model SWB Model SWB Model SWB Series 300 p ees Series 200 Series 100 Table of Contents Motor and Drive Installation Units Shipped from Stock 2 Installation 0 0 ee 3 Affect of Installation on Performance 3 UL cUL 762 Restaurant Exhaust 4 Pre Starting Checks 000000 eee 4 5 Belt Drive Fan Maintenance 6 Bearing Lubrication Schedule 6 Motor Maintenance Belt and Direct Drive 6 ameter Pans LISD 2tsvtetreneseten send eedee ca ced 7 D Troubleshooting Chart 00eeeeeeeees 8 Model SFD Al Centrifugal Utility Fans Motor and Drive Installation Instructions Model SWB units are shipped from stock without motors or drives 1 Adjust motor pulley to its closed position for maximum fan speed or increments of 1 2 turn open maximum of 5 turns open for reduced fan speed Tighten set screw on flat area only lt
6. a minimum of 40 inches 1016 mm above the roof line and the exhaust duct must be fully welded to a distance of 18 inches 457 mm above the roof surface Series 200 amp 300 SWB models are listed for grease removal UL cUL 762 File no MH11745 H G US LISTED az Optional Companion Flange lt 3 Wheel gt Diameters Upblast Discharge 40 in 1016 mm Weatherhood 18 in 457 mm Duct f F Per NFPA 96 the fan discharge must kitchen Per NFPA 96 the duct be a minimum of 40 in 1076 mm hood Mmusi be Cr all weldee above the roof surface Consuucton hehe minimum distance of 18 inches 457 mm above the roof surface This drawing is for dimensional information only See the latest edition of NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations for detailed installation instructions materials duct connections and clearances Pre Starting Checks WARNING 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 4 Centrifugal Utility Fans Alignment of Pulleys and Belts Check pulleys and belts for proper alignment
7. al affixed to the unit Models SFD and SFB units should be operated only when attached to the system for which they were designed Without proper system static pressure the motor could be overloaded Wheels as viewed from the drive side Backward Inclined Airflow Airflow Airfoil Airflow Centrifugal Utility Fans 5 Blower Maintenance Belt Drive Belts tend to stretch after a period of time They should be periodically checked for tension and wear When replacing belts use the same type as supplied with the unit Replacement of belts should be accomplished by loosening the tensioning L Bolts so the belts may be removed by hand Do not force belts on or off as this may cause breakage of cords and lead to premature belt failure Belt tension should be adjusted to allow 1 64 in of belt deflection per 1 in of belt span For example a 16 in belt span should have 16 64 in or 1 4 in of deflection with moderate thumb pressure at mid point between the pulleys Fig 3 Refer to Greenheck s Product Application Guide Measuring Belt Tension for additional information FA 127 11 found online at www greenheck com under the library section Fig 3 Belt Span Deflection Belt Span 64 Shaft bearings are the most critical moving part of a fan Therefore special attention should be given to keeping the bearings clean and well lubricated Proper lubrication provides for reduction in
8. dirty or grease laden air require frequent cleaning to assure smooth and safe operation All fasteners including set screws in the bearing collars should be checked for tightness each time maintenance checks are performed A proper maintenance program will help preserve the performance and reliability designed into the fan Parts List Always provide the unit model and serial number when requesting parts or information Replacement Parts 1 Scroll housing 6 Drive frame assembly 11 Motor pulley 2 Drive frame base angle 7 Pillow block bearings 12 Belt tensioning bolts 3 Intake support panel 8 Fan shaft 13 Motor plate 4 Inlet ring and cone 9 Shaft pulley 14 Motor 5 Wheel specify rotation 10 Belt 8 Centrifugal Utility Fans ied a Troubleshooting Probie Gauss Corrective Action Wheel Rubbing Inlet Adjust wheel and or inlet cone Tighten wheel hub or bearing collars on shaft Tighten sheaves on motor fan shaft Adjust belt tension Align V Belt Drive sheaves properly see page 4 Replace worn belts or sheaves Excessive Noise Replace defective bearing s Lubricate bearings Tighten Bearings collars amp fasteners Clean all dirt off wheel Check wheel balance rebalance in Wheel Unbalance place if necessary Check wheel for correct rotation Increase fan speed Low CFM Duct System See page 4 Change obstructions in system Use correction factor to adjust Duct S
9. entering can be accomplished by a loosening the inlet cone bolts to move the inlet cone or by b loosening the bearings in order to move the shaft Wheel and inlet cone overlap can be adjusted by loosening the wheel hub set screws and moving the wheel to the desired position Tighten all fasteners and set screws securely and realign drive pulleys after adjustment Wheel Clearance EE Series sl ee olerance ag sit inches mm Ler a Fe e kal Tolqa SS see se sos eee P f Ra Pak jeje 1310 10 110 210 00 pat a 7 10 fat3 213 ot Es 15 115 215 03 me6 216 18 j118 218 00 00 m 20 120 220 09 00 m 22 222 Ae 18 ho t 124 224 0 w _ A Ea Ea co N amp S amp Z 4 6 22 4 4 6 22 N x amp S amp zN 3 z x 22 he 24 10 e 5 14s 27 1 s 0 10 e 1 32 1 4 1 6 37 3s 10 6 8 1 6 40 Y2 13 e 8 oo o SIS i MS J 2 Wheel Rotation Rotation direction of the wheel is critical and incorrect rotation will result in reduced air performance increased motor loading and possible motor burnout Check wheel rotation by momentarily energizing the unit and noting if rotation is in the same direction as the airflow at the outlet and conforms to the rotation dec
10. 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 Centrifugal Utility Fan catalog 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 A Building Value in Air Phone 715 359 6171 Fax 715 355 2399 E mail gfcinfo greenheck com Website www greenheck com 8 455308 e SWB SFB SFD Rev 6 June 2011 Copyright 2011 Greenheck Fan Corporation
11. otation shown Counterclockwise discharge positions are a mirror image of those shown Fan rotation is always specified from the drive side of the housing Discharge Positions CW BH CW BAU CW UB CW TAU CW TH CW TAD CW DB CW BAD Affect of Installation on 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 increased sound levels and structural failure of the fan wheel Free discharge or turbulent flow in the discharge ductwork will also result in system effect losses The examples below show the system layout and inlet and discharge configurations which can affect fan performance Discharge Configurations GOOD FAIR N N N IN Should be at least 1 2 Impeller Dia GOOD GOOD Not Greater than 60 Including Angle POOR POOR FAIR Centrifugal Utility Fans 3 Installation of UL cUL 762 Listed Fans for Restaurant Exhaust The UL cUL 762 listing for restaurant exhaust is available on Series 200 and 300 SWB fan model sizes 206 224 and 327 349 with a weatherhood UL cUL 762 fans are listed for a maximum operating temperature of 375 F 191 C and includes an access door and 1 inch 25 4 mm drain connection An outlet guard is strongly recommended when the fan discharge is accessible An upblast discharge is recommended The fan discharge must be
12. ystem for temperature altitude Resize ductwork Clean filters coils Change fan speed Resize ductwork Access door filters grills not installed High CFM Duct system has more or less restriction than Check rotation of wheel Adjust fan speed anticipated Check rotation of wheel Reduce fan speed High Horsepower Duct Svetem Resize ductwork Check proper operation of face and bypass y dampers Check filters and access doors Electrical Suppi Check fuses circuit breakers Check for switches off Check for PPY correct supply voltage Static Pressure Wrong Fan Doesn t Operate Check for broken belts Tighten loose pulleys Motor Assure motor is correct horsepower and not tripping overload protector Check for excessive or insufficient grease in the bearing Overheated Bearing iochaniesl Replace damaged bearing Relieve excessive belt tension Align bearings Check for bent shaft NOTE Always provide the unit model and serial numbers when requesting parts or service information Always check motor amps and compare to nameplate rating Excessive fan speed may overload the motor and result in burnout 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 to be defective during the warranty period will be replaced at our option when returned to our factory transportation prepaid Motors are warranted by the
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