Greenheck Fan Centrifugal Sidewall Exhaust Fans CW/CWB User's Manual
Contents
1. 2 Model CW CWB e Centrifugal Sidewall Exhaust Fans 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 Greenheck Fan Corporation 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 to 110 F 1 to 43 C A 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 allow cold parts to reach room temperature To dry parts and packages use a portable electric heater to get rid of any moisture buildup 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 Fans designed for outdoor applications may2. This unit should be made non functional when cleaning the wheel or housing fuses removed disconnect locked off 4 Once installed adjust belts as shown in Pre Starting Checks 5 Shaft bearings can be classified in two groups relubricating and non relubricating All non relubricating bearings on standard model CWB fans are factory lubricated and require no further lubrication under normal use between 20 to 180 F 29 to 82 C in a relatively clean environment 6 Units installed in hot humid or dirty locations should be equipped with special bearings These bearings will require frequent lubrication On CWB belt driven fans the standard cast pillow block bearings are factory lubricated and are provided with external grease fittings Annual lubrication is recommended or more frequently if needed see Table 2 Do not over grease Use only one or two shots of lubricant with a hand gun Maximum hand gun rating is 40 psi Rotate bearings during lubrication where good safety practice permits Caution should be employed to prevent over packing or contamination 7 Grease fittings should be wiped clean The unit should be in operation while lubricating Extreme care should be used around moving parts 8 Grease should be pumped in very slowly until a slight bead forms around the seal A high grade lithium base grease should be used 9 When installing restaurant exhaust applications follow NFPA 70 for cleaning fans
3. AIGREENHECK Building Value in Air PN 457691 Models CW CWB Centrifugal Sidewall Exhaust Fans 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 CW Direct Drive Model CW is a direct drive centrifugal sidewall exhaust fan These fans are specifically designed for wall mounted application Performance capabilities range up to 6 400 cfm 10 874 m hr and up to 3 in wg 747 Pa of static pressure The maximum continuous operating temperature for fan sizes 098 200 is 400 F 204 C and for fan sizes 060 095 is 160 F 71 C CW fans are available in fourteen sizes with nominal wheel diameter ranging from 9 to 20 inches 229 mm to 508 mm 060 200 unit sizes Each fan shall bear 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 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 wel
4. 18 Infrequent operation or light duty in clean atmosphere Parts List NOTE Each fan bears a manufacturer s nameplate with model number and serial number embossed This information will as sist the local Greenheck representative and the factory in providing service and replacement parts Before taking any corrective action make certain unit is not capable of operation during repairs CAUTION A fan manufactured with an explosion resistant motor does not certify the entire unit to be explosion proof CW Direct Drive Centrifugal Sidewall Exhaust Fan Windband j Birdscreen Motor Compartment Mounting Plate Breather Tube Cover B Model CW CWB Centrifugal Sidewall Exhaust Fans CWB Belt Drive Centrifugal Sidewall Exhaust Fan Windband Birdscreen Motor Compartment Mounting Plate Cover Wheel Breather Tube Troubleshooting WARNING Before taking any corrective action make certain unit is not capable of operation during repairs PROBLEM CAUSE CORRECTIVE ACTION Excessive Noise or Vibration Bad Bearings Replace Wheel unbalance Clean and remove all dirt buildup off wheel Check wheel balance rebalance in place if necessary Belts too tight or too loose Adjust tension see figure 12a b Wheel improperly aligned and rubbing Center wheel on inlet see figure 7 Loose drive or motor pulleys Align and tighten See Pre Sta
5. 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 If moisture or dirt accumulations are found on parts the source 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
6. 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 reported to the Traffic Department If damaged upon arrival file a claim with carrier Any physical damage to the unit after acceptance is not the responsibility of Greenheck Fan Corporation slings or timbers through the venturi of fan Fans with special coatings or paints must be protected in handling to prevent damage Storage Fans are protected against damage during shipment If the unit cannot be installed and operated immediately 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 motor amperage and voltage ratings must be checked for compatibility to supply voltage prior to final electrical connection For CW CWEB installations
7. 10 Grease containers must be emptied at regular intervals to prevent overflow 11 To ensure tightness check pulley setscrews Proper keys must be in keyways 12 Fan RPM should not be readjusted Only use pulleys of identical size and type when replacing pulleys 13 During the first few months of operation check bearing set screws periodically to ensure tightness 14 If unit is to be left idle for an extended period remove belts and store in a cool dry place to avoid premature belt failure Recommended Relubrication Tat ase Frequency in Months Manufacturer Manufactur VICI TUICA tU Grease NLGI 2 NOTE If unusual environment conditions exist U S Electric Motors Grease No 83343 extreme temperature moisture or contaminants more Chevron U S A Inc Chevron SRI Grease 2 frequent lubrication is required f Mobilith A good quality lithium base grease conforming to Mobil OIlCorporation Mobil 532 NLGI Grade 2 consistency such as those listed here z l Premium BRB 2 exaco Inc may be used Texaco Multifak 2 Amoco Oil Co Rykon Premium 2 Exxon Unirex N2 Interval F months Type of Service Shell B Shell Alvania 2 Heavy duty in dirty dusty locations high ambient 1to3 temperatures moisture laden atmosphere vibration 3t06 12 to 24 hours per day heavy duty or if moisture is present 6 to 12 8 to 16 hours per day in clean relatively dry atmosphere 42 to
8. Fans provides additional safety information This publication can be obtained from AMCA International Inc at www amca org P GREENHECK Building Value in Air Phone 715 359 6171 Fax 715 355 2399 E mail gfcinfo greenheck com Website www greenheck com BE 457691 Models CW CWB Rev 5 September 2008 Copyright 2008 Greenheck Fan Corp
9. ions in inches millimeters NOTE 2 inches minimum 8 inches when motorized option is required May vary depending on motor size CWB Belt Drive Dimensions Damper Mounting Model Ae e a e eaae IE Boi ome Size Circle A CWB 098 101 24 28 19 12 12 14 16 A cis 121 131 632 718 502 318 305 356 429 E g A 28 20 22 15 15 17 19 ge 23 ade 16 733 756 562 394 381 432 492 Cge 3 35 28 27 17 17 19 25 Besa CWB 180 200 899 727 705 445 432 483 635 34 Ja aeaa zo Ed m m 22 28 y 2a 7 1087 860 794 521 508 559 721 y 50 36 38 25 25 27 35742 CWB 300 1270 914 975 648 635 686 910 All dimensions in inches millimeters NOTE 2 inches minimum 7 inches when motorized option is required May vary depending on motor size the electrical supply should be routed through the conduit chase located between the mounting plate and the bottom of the motor compartment Wiring must conform to local and national codes CAUTION Do not lift by the fan hood Avoid lifting fans in a way that will bend or distort fan parts Never pass Receiving Upon receiving the product check to make sure all items are accounted for by referencing the bill of lading to ensure all items
10. l 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 DANGER Always disconnect lock and tag power source before installing or servicing Failure to disconnect power source can result in fire shock or serious injury CAUTION When servicing the fan motor may be hot enough to cause pain or injury Allow motor to cool before servicing CAUTION Precaution should be taken in explosive atmospheres Model CWB Belt Drive Model CWB is a belt drive centrifugal sidewall exhaust fan These fans are specifically designed for wall mounted application Performance capabilities range up to 12 500 cfm 21 200 m hr and up to 2 75 in wg 685 Pa of static pressure The maximum continuous operating temperature is 400 F 204 4 C CWB fans are available in nineteen sizes with nominal wheel diameter ranging from 9 to 30 inches 229 to 762 mm 098 300 unit sizes Each fan shall bear a permanently affixed manufacturer s engraved metal nameplate containing the model number and individual serial number 1 Follow all local electrical and safety codes as well as the National Electrical Code NEC and the National Fire Protection Agency NFPA where applicable Follow the Canadian Electric Code CEC in Canada 2 The rotation of the wheel is critical It must be free to ro
11. motor overloading and possible burnout Model CWB Pre Starting Belt Tension Checks 8 Always loosen tension enough to install belts without stretching see figure 9 gt Belts wk Ko Zz Do not force belt s Forcing the belt s will break the cords and Figure 9 cause belt failure 9 For units with two groove pulleys adjust so the tension is equal in both belts 10 If adjustments are made it is very important to check the pulleys for proper alignment Misaligned pulleys lead to excessive belt wear vibration noise and power loss see figure 10 Figure 10 11 For CWB units Belt tension can be adjusted by loosening four fasteners on the drive frame see figure 11 The motor plate slides on the slotted adjusting arms and drive frame angles in the same manner Fasteners 4 Fasteners Identical fasteners on opposing side must also be loosened Figure 11 12a Sizes 071 161 Belts should be tensioned just enough to prevent slippage at full load Belts should have a slight bow on the slack side while running at full load see figure 12a 12b Sizes 180 540 Belt tension should be adjusted to allow 1 64 in 0 397 mm of deflection per inch of belt span For example a 15 in 881 mm belt span A WARNING The fan has been checked for mechanical noises at the factory prior to shipment If mechanical noise should develop suggested corrective actions are offered in the T
12. nit should be aligned with the breather tube 7 pointing down The electrical chase should be guided through the hole in the motor compartment The horizontal support channels 8 should slide over the mounting angle clips 10 on the mounting plate until the holes in the windband and clips are aligned Replace fasteners 9 and tighten Wiring now can be done Consult local code authorities for your specific requirements O ELECTRICAL i WIRING f N OLS LA During shipping wheel position may shift Alignment should be as shown above centered in the inlet and can be accomplished by loosening the fasteners 11 located in the motor compartment For belt drive units additional vertical alignment can be accomplished by loosening the four fasteners on the drive frame support angles and the 2 fasteners that hold the L brackets to the support angles on top 13 Also horizontal alignment can be made by loosening the bearings from the bearing plate Removal of the entire power pack motor drives and wheel for maintenance or cleaning can be accomplished by removing the breather tube 12 and fasteners 11 13 71 CW CWB Models 098 300 j CW Models 060 095 4 Model CW CWB e Centrifugal Sidewall Exhaust Fans Pre Starting Checks 1 Check all fasteners and setscrews for tigh
13. 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 Thoroughly wipe clean with Tectyl 506 Ashland Inc or the equivalent For hard to reach internal surfaces or for occasional use consider using Tectyl 511M Rust Preventive 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 A in a similar fashion until the fan equipment goes into operation Installation These fans exhaust directly away from the building therefore their location and placement should be analyzed Proximity to nearby buildings and people must be considered Access to the motor compartment is accomplished by removing the screws from the cover The cover can then be removed and placed on a flat surface in an area protected from strong winds The motor s amperage and voltage rating must be checked for compatibility to the supply voltage prior to final electrical connection For NFPA Restaurant Applications the electrical supply must enter the motor compartment through the breather tube For other non flammable applications the electrical supply can be routed through the conduit chase between the mounting plate and the bottom of the motor compartment Consult local code authori
14. roubleshooting section IMPORTANT Over tightening will cause excessive bearing wear and noise Too little tension will cause slippage at startup and uneven wear should have 15 64 in 0 234 mm or about 1 4 in 6 mm of deflection with moderate thumb pressure at mid point between pulleys see figure 12b Deflection Deflection Belt Span Belt Span Slack Side Figure 12a Figure 12b 13 The adjustable motor pulley is factory set for the RPM specified Speed can be increased by closing or decreased by opening the adjustable motor pulley Two groove variable pitch pulleys must be adjusted an equal number of turns open or closed 14 Any increase in speed represents a substantial increase in the horsepower required by the unit 15 Motor amperage should always be checked to avoid serious damage to the motor when speed is varied Operation CW CWB 1 Before starting up or operating fan check all fasteners for tightness In particular check the setscrews in wheel hub and pulleys if applicable 2 While in the OFF position or before connecting the fan to power turn the fan wheel by hand to be sure it is not striking the venturi or any obstacle 3 Start the fan and shut it off immediately to check rotation of the wheel with directional arrow in the motor compartment see figure 8 4 When the fan is started observe the operation and check for any unusual noises 5 With the system in full operation and all duc
15. rting Checks see page 4 6 Foreign objects in wheel or Remove objects check for damage or unbalance housing Check system Proper operation of backdraft or control System resistance too high dampers obstruction in ductwork clean dirty filters Unit running backwards Correct as shown in figure 8 Reduced airflow Excessive dirt buildup on wheels Clean wheel Improper wheel alignment Center wheel on inlets see Pre Starting checks and figure 7 Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory transportation prepaid Motors are warranted by the motor manufacturer for a period of one year Should motors furnished by Greenheck prove defective during this period they should be returned to the nearest authorized motor service station Greenheck will not be responsible for any removal or installation costs As a result of our commitment to continuous improvement Greenheck reserves the right to change specifications without notice Greenheck Catalog Series C provides additional information describing the equipment fan performance available accessories and specification data AMCA Publication 410 96 Safety Practices for Users and Installers of Industrial and Commercial
16. tate without striking or rubbing any stationary objects 3 Motor must be securely and adequately grounded 4 Do not spin fan wheel faster than max cataloged fan RPM Adjustments to fan speed significantly effects motor load If the fan RPM is changed the motor current should be checked to make sure it is not exceeding the motor nameplate amps 5 Do not allow the power cable to kink or come in contact with oil grease hot surfaces or chemicals Replace cord immediately if damaged 6 Verify that the power source is compatible with the equipment 7 Never open access doors to a duct while the fan is running Model CW CWB e Centrifugal Sidewall Exhaust Fans Es CW Direct Drive Dimensions Damper Mounting Model A e a Sea ramo Bol p 9 Size Circle CW 060 065 18 13 14 8 8 10 254 11 ry 070 075 467 343 375 216 203 254 298 Er CW 080 085 21 13 17 10 10 12 15 E a a 090 533 340 454 267 254 305 381 z 2g CW 095 21 15 4 17 10 10 12 15 ce ias 533 387 454 267 254 305 381 a 5 E 5 E CW 098 101 247 28 19 12 12 14 16 5 a J 121 131 632 718 502 318 305 356 429 n 28 29 22 15 15 17 19 CW 141 161 733 756 562 394 381 432 492 y 35 28 27 17 17 19 25 eee 905 727 705 445 432 483 635 All dimens
17. ties for your specific requrements UL cUL 762 Installations are for Restaurant Applications All CWB fans and CW fans with A B and C motor RPMs are the only fans approved for this installation All must include the suffix G All fans must be installed per NFPA 96 and meet all local code requirements In addition the maximum operating temperature at the fan must not exceed 375 F 191 C Typical Wall Mounting Installation 1 Remove mounting plate from unit by removing the fasteners shown above marked by 1 Remove motor compartment cover by removing fasteners marked by 2 Q on Pena oie e 2 Locate the mounting plate 3 at the desired position and check to avoid unit clearance problems Cut the wall opening 4 as shown based upon dimensions obtained from the Dimensional Data Section Locate top of mounting plate decal and attach to the wall construction The fasteners must pass through the holes provided in the mounting angle clips 5 on the mounting plate 3 For uneven surfaces shims may be required Sealant or caulking should be applied in the groove 6 formed by the mounting plate and the wall to prevent moisture leakage into the building Model CW CWB Centrifugal Sidewall Exhaust Fans 3 Caulking 3 Once the mounting plate has been attached to the wall the unit can be installed The u
18. tings should be greased in accordance with manufacturers recommendations Where motor temperatures do not exceed 104 F 40 C the grease should be replaced after 2 000 hours of running time as a general rule Wheels require very little attention when moving clean air Occasionally oil and dust may accumulate causing imbalance When this occurs the wheel and housing should be cleaned to ensure smooth and safe operation All fasteners should be checked for tightness each time maintenance checks are performed prior to restarting unit A proper maintenance program will help these units deliver years of dependable service Belt Bearing Maintenance CWB Unit 1 Belts tend to stretch after a period of time They should be checked periodically for wear and tightness When replacing belts use the same type as supplied with the unit 2 Matched belts should always be used on units with multi groove pulleys 3 For belt replacement loosen the tensioning device enough to allow removal of the belt by hand Do not force the belts on or off This may cause cords to break leading to premature failure 6 Model CW CWB e Centrifugal Sidewall Exhaust Fans WARNING Always disconnect lock and tag power source before servicing Failure to disconnect power source can result in fire shock or serious injury CAUTION Uneven cleaning of the wheel will produce an out of balance condition that will cause vibration in the fan WARNING
19. tness The wheel should rotate freely and be aligned as shown in figure 7 2 Wheel position is preset and the unit is test run at the factory Movement may occur during shipment and realignment may be necessary Wheel Overlap and Gap Dimensions Model G Overlap in mm H Gap in mm 060 095 3 32 2 098 161 1 4 6 180 300 1 2 13 Figure 7 3 Only CW unit Centering height alignment can be accomplished by loosening the set screws in the wheel and moving the wheel to the desired position 4 Only CWB unit Centering can be accomplished by loosening the bolts holding the drive frame to the shock mounts and repositioning the drive frame 5 Only CWB unit Wheel and inlet cone overlap can be adjusted by loosening the setscrews in the wheel and moving the wheel to the desired position 6 Only CWB unit Fan RPM should be checked and verified with a tachometer 7 Check wheel rotation viewing from the shaft side by momentarily energizing the unit Rotation should be clockwise and correspond to the rotation decal on the unit see figure 8 If wheel rotation is incorrect reverse two of the wiring leads or check motor wiring for single phase Wheel Rotation All CW and CWB models have clockwise rotation when viewed from top of fan Clockwise Airflow Figure 8 WARNING Correct direction of wheel rotation is critical Reversed rotation will result in poor air performance
20. twork attached measure current input to the motor and compare with the nameplate rating to determine if the motor is operating under safe load conditions 6 Keep inlets and approaches to fan clean and free from obstruction Model CW CWB Centrifugal Sidewall Exhaust Fans 5 Inspection CW CWB Inspection of the fan should be conducted at the first 30 minute and 24 hour intervals of satisfactory operation 30 Minute Interval Inspect bolts setscrews and motor mounting bolts Adjust and tighten as necessary 24 Hour Interval Check all internal components On CWB unit only inspect belt alignment and tension Adjust and tighten as necessary IMPORTANT Adjust tighten belt tension after the first 24 48 hours of operation Maintenance CW CWB A proper maintenance program will help these units deliver years of dependable service Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and who are experienced with this type of equipment Motor maintenance is generally limited to cleaning and lubrication where applicable Cleaning should be limited to exterior surfaces only Removing dust buildup on motor housing ensures proper motor cooling Greasing of motors is only intended when fittings are provided Many fractional horsepower motors are permanently lubricated and should not be lubricated after installation Motors supplied with grease fit
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