Greenheck Fan Centrifugal Roof Exhaust Fans Series L Models LB User's Manual
Contents
1. ACCESS gt t BIRDSCREEN WINDBAND __ MOTOR DRIVE WHEEL FRAME HOOD COVER BIRDSCREEN MOTOR FAN SHAFT DRIVE ASSEMBLY DRIVE FRAME LOUVERED PENTHOUSE WHEEL en Series L Models LB LBP LD and LDP Troubleshooting WARNING Before taking any corrective action make certain unit is not capable of operation during repairs PROBLEM CAUSE CORRECTIVE ACTION System resistance too high Check system tor proper operation of backdraft or control dampers remove obstructions in ductwork etc Unit backwards See Pre Starting Checks Reduced Airflow Fan Fan speed too low too low Increase fan speed Excessive dirt buildup on Clean wheel wheel Improper wheel alignment Center wheel on inlets Bad Bearings Belts too tight or too loose Refer to Figure 4 and adjust tension nee mprepeny alghed Center wheel on inlets See Figure 1 rubbing Excessive Noise Loose drive or motor pulleys Align and tighten See Pre Start up Checks or Vibration ca Remove objects check for damage or unbalance Unbalance of wheel caused by excessive dirt and grease Remove buildup buildup Maintenance Documentation Job Information Job Name Service Organization Address Address City City State Zip State Zip Phone Phone Contact Person Work Done By Nameplate Information Field Start Up Documentation Model Volts Hertz Phase Actual Voltage2. 4 2 BS g O Q 2 al ao oO oy 108 318 56 780 1626 1372 1435 354 Damper Roof eight Size Opening 144 444 201 alv 2 8 10 51 203 267 13 16 4 10 12 343 406 102 254 318 13 4 12 14 343 457 102 305 368 191 86 1168 914 978 1321 1067 1130 240 8 579 Damper Roof Wei Size Opening Alum 1110 13 8 10 584 292 343 203 267 12 16 10 12 95 483 635 318 419 254 318 29 239 1473 1219 1283 263 100 22 14 1816 12 14 82 120 559 711 356 470 305 368 37 All dimensions given in inches millimeters Weights given in pounds kilograms Series L Models LB LBP LD and LDP NO No gt N D clo ola Alo aS col rol po D on gt 0 Die ol RID 5 ola 4 N N o fag ek ae a a Sk sE ELE i a Slo la TE PE Slo 5 wa CoN ola polA wa a R BR BID no TA Aim Aa oo SIS aS amp S NO T h N Q 22 13 Model LD 432 559 686 343 80 19 28 27 95 483 711 686 37 17 N
3. A 45 20 ees aE 44 100 22 30 559 762 68 Model LDP 57 26 D Q gt F NO N N e oO N 22 O gt 16 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 Pre Startup Checks 1 Check all fasteners for tightness The wheel should rotate freely and be aligned as shown in Figure 1 WHEEL OVERLAP AND DIMENSIONS Model G Overlap in mm H Gap in mm LB LBP 10 14 Y4 6 LB LBP 30 54 Figure 1 2 Wheel position is preset and the unit is test run at the factory Movement may occur during shipment and realignment may be necessary 3 Centering can be accomplished by loosening the bolts holding the drive frame to the shock mounts and repositioning the drive frame 4 Wheel and inlet cone overlap can be adjusted by loosening the setscrews in the wheel and moving the wheel to the desired position 5 Check wheel rotation by momentarily energizing the unit Rotation should be clockwise as shown in Figure 2 and correspond to the rotation decal on the unit Rotation is determined when the unit is viewed from the motor or shaft pulley side WHEEL ROTATION All Series L fans ha
4. 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 lA WARNING Always disconnect lock and tag power source before servicing Failure to disconnect power source can result in fire shock or serious injury WARNING Uneven cleaning of the wheel will produce an out of balance condition that will cause vibration in the fan WARNING This unit should be made non functional when cleaning the wheel or housing fuses removed disconnect locked off Belt Bearing Maintenance 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 far enough to allow removal of the belt by hand Do not force belts on or off This may cause cords to break leading to premature belt failure 4 Once installed adjust belts as shown in Pre Starting Checks 5 Shaft bearings can be classified in two groups relubr
5. free cloths Polish any remaining rust from Rust Preventive WD 40e or the equivalent surface with crocus cloth or fine emery paper and Series L Dimensions Damper Roof Weight Model LB se a fe cfo e opening 559 991 711 438 432 85 305 368 25 445 457 102 406 470 37 w Bg 00 w 89 991 1016 445 533 114 457 921 61 NO oO 5 N Q po Bass 084 152 457 521 66 597 171 610 673 85 6 216 762 826 113 9 248 914 978 153 P gi S _ RON GSS S N 16 NO BIO BRIS IN ol po OID OI Old owls alo a S S Saks Old 82 1321 1905 1794 949 292 _ 1067 1130 180 11 50 430 295 1219 1283 195 12 56 596 318 1372 1435 270 Damper Roof el Size Opening Alum 829 305 368 45 18 116 6 406 470 53 20 179 62 457 521 6 457 521 el age ge 6 610 673 1016 762 826 81 4 0 4 1 D m Model LBP gt NO O NO NO 9 A SS O A Se os wD 3 ds SS SS S w owaj Y S lo 90 S amp S N oO gt NO N N
6. 2 _ Phase Amps Mark Actual Amperage Supply hp Exhaust hp Blower Rotation Serial Number Air Volume Design cfm Model Voltage Actual cfm Motor Amperage Level of fan L or H Fan RPM Fan RPM Range min max R Series L Models LB LBP LD and LDP Maintenance Log 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 L 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 GREENHECK Building Value in Air Phone 715 359 6171 Fax 715 35
7. 5 2399 E mail gfcinfo greenheck com Website www greenheck com 453283 LB LBP LD LDP Series L IOM Rev 2 June 2008 Copyright 2008 Greenheck Fan Corp
8. PN 453283 Series L Models LB LBP LD and LDP Low Silhouette Centrifugal Roof Exhaust Fans GREENHECK Building Value in Air 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 Series L Exhaust Fans Greenheck s Series L low silhouette models LD LB LDP and LBP centrifugal roof exhaust fans provide the industry s best performance and durability for general clean air applications Series L exhaust fans have the broadest performance in the industry up to 1 25 in wg 377 Pa and 37 500 cfm 63 713 m hr The severe duty models LDP and LBP are far superior to any centrifugal roof exhaust fan currently in the market Specifically designed for applications with extremely high structural design load requirements Designed with structural steel supports and ESD 603D louver blades the severe duty louver enclosure SDLE may be used in any application which requires a fan to endure high winds with the potential of wind blown debris Miami Dade notice of acceptance number 03 0422 05 General Safety Information Only qualified personnel should install this fan Personnel should have a clear unde
9. en lifting the unit to the roof securely fasten straps to the drive frame located in the motor compartment Access to the motor compartment is accomplished by removing bolts securing the hood to the base The hood cover will need to be removed for access to the drive frame The cover can then be removed and placed on a flat surface in an area protected from strong winds When unit is on the roof move fan to desired location and fasten securely through mounting holes in base Shims may be necessary depending upon roof material thickness The motor amperage and voltage ratings must be checked for compatibility to supply voltage prior to final electrical connection Electrical lead in wires should be run through the conduit provided between the curb 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 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 precautions need to be taken to prevent deterioration of the unit during storage The user assumes responsibility of the fan and accessories Series L Models LB LBP LD and LDP while in storage The manufacturer will not be responsible
10. 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 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 remove any moisture build up Leave coverings loose to permit air circulation and to allow for periodic inspection The unit should be stored at least 3 inches 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 it
11. icating and non relubricating All bearings are factory lubricated and require no further lubrication under normal use between 20 F and 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 Caution should be employed to prevent overpacking 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 is recommended 9 Direct drive units require little maintenance except for cleaning wheel alignment and oiling according to motor label instructions Series L Models LB LBP LD and LDP 5 Parts List NOTE Each fan bears a manufacturer s nameplate with model number and serial number embossed This information will assist 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 Refer to UL Listing Mark for the fans approved usage FAN SHAFT FABRA HOOD STYLE DRIVE ASSEMBLY sees e HINGED gt
12. 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 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 oil Do not destroy the continuity of the surfaces be restored to good condition promptly if signs of Thoroughly wipe clean with Tectyl 506 Ashland Inc rust occur Immediately remove the original rust or the equivalent For hard to reach internal surfaces preventive coating with petroleum solvent and clean or for occasional use consider using Tectyl 511M with lint
13. rstanding of these instructions and should be aware of general safety precautions Improper installation can result in electric shock possible injury due to coming in contact with moving parts as well as other potential hazards Other considerations may be required if high winds or seismic activity are present If more information is needed contact a licensed professional engineer before moving forward 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 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 The rotation of the wheel is critical It must be free to rotate without striking or rubbing any stationary objects Motor must be securely and adequately grounded 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 Do not allow the power cable to kink or come in contac
14. t If mechanical noise should develop suggested corrective actions are offered in the Troubleshooting section WARNING Over tightening will cause excessive bearing wear and noise Too little tension will cause slippage at startup and uneven wear Belt Span Deflection 64 Belt Span Figure 6 10 The adjustable motor pulley is factory set for the RPM specified Speed can be increased by closing or decreased by opening the adjustable motor sheave 11 Two groove variable pitch pulleys must be adjusted an equal number of turns open or closed 12 Any increase in speed represents a substantial increase in the horsepower required by a unit 13 Motor amperage should always be checked to avoid serious damage to the motor when speed is varied IMPORTANT Adjust tighten belt tension after the first 24 48 hours of operation Maintenance 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 hp motors are permanently lubricated and should not be lubricated further Motors supplied with grease fittings should be greased in accordance with manufacturers recommendations Where motor temperatures do not exceed 104 F 40 C the grease should be replaced after 2000 hours of running time
15. t 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 to a duct while the fan is running Series L Models LB LBP LD and LDP 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 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 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 Wh
16. ve clockwise CW wheel rotation when viewed from top of fan Figure 2 9 Clockwise WARNING Correct direction of wheel rotation is critical Reversed rotation will result in poor air performance motor overloading and possible motor burnout Series L Models LB LBP LD and LDP Pre Starting Belt Tension Checks 6 Always loosen tension enough to install belt without stretching see Figure 3 BELTS 22 Do not force belt s Forcing the belt s will break the cords and Figure 3 cause belt failure 7 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 4 CORRECT Figure 4 8 Belt tension can be adjusted by loosening four fasteners marked in Figure 5 on the drive frame This allows the motor plate to slide on the drive frame angles for proper positioning FASTENERS Identical fasteners on opposing side must also be loosened Figure 5 9 Belt tension should be adjusted to allow in 0 397 mm of deflection per inch of belt span For example a 15 in 881 mm belt span should have a 0 234 mm or about 6 mm of deflection with moderate thumb pressure at mid point between pulleys see Figure 6 WARNING The fan has been checked for mechanical noises at the factory prior to shipmen
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