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Report Table of Contents Handling Receiving, Unpacking, Handling 2-3 G Direct Drive Storage 3 Lift unit on to the roof utilizing hooks under the lip of the shroud. Evenly space the hooks around the Inspection and Maintenance during Storage 3 shroud using a minimum of four lifting straps. Use Removing from Storage 3 a spreader bar to ensure the straps do not come in Installation contact with the unit(see Figure 1). Typical Roof Mounting and Wiring Diagram 4 Typical Roof Mounting Model G and GB 5 Figure 1 Mounting for Severe Duty 6 • Pre-Starting Checks 6-7 Operation 8 Inspection 8 Spreader-.•--- ----- -------- Routine Maintenance 9 Bar Tapered Bushing Hub Installation and Removal 9 Belt and Bearing Maintenance 9-10 Lifting—. ■ Bearing Lubrication Schedule 10 Strap Fan Inlet Connections 10 • Troubleshooting 11 Parts List 12 Our Commitment 12 H ok Itallillit—� Ho k Receiving Upon receiving the product, check to ensure all Figure 2 items are accounted for by referencing the delivery 6 Asl .— r Hook With receipt or packing list. Inspect each crate or carton 7',, Safety Latch for shipping damage before accepting delivery. Alert r� t (Supplied by others) the carrier of any damage detected. The customer will �j-,,r g , ��-% (2)Bearing Plate make notification of damage (or shortage of items) . d Lifting Points on the delivery receipt and all copies of the bill of �e lading which is countersigned by the delivering carrier. r ) If damaged, immediately contact your Greenheck .f... %i Representative. Any physical damage to the unit after acceptance is not the responsibility of Greenheck Fan Corporation. iii► (4)Drive Frame Lifting Points Unpacking Verify that all required parts and the correct quantity of each item have been received. If any items are Figure 3 missing, report shortages to your local representative o 1 ` to arrange for obtaining missing parts. Sometimes it is not possible that all items for the unit be shipped 1111111• together due to availability of transportation and truck Screws-0-%�o� o�.• <--screws space. Confirmation of shipment(s) must be limited to I —��� li only items on the bill of lading. 1 Li "13/nin. (44 mm) I. Curb Cap - ---. © Doiirnblast Centrifugal Roof Exhaust 1 GB Belt Drive Outdoor- Fans designed for outdoor applications When lifting the unit on to the roof, use either the four may be stored outdoors, if absolutely necessary. lifting points on the drive frame or the two lifting Roads or aisles for portable cranes and hauling points on the bearing plate if present(see Figure 2 equipment are needed. for lifting points). Access to the drive frame is The fan should be placed on a level surface to prevent accomplished by removing the screws pointed out water from leaking into the fan. The fan should be in Figure 3. The cover can then be removed and elevated on an adequate number of wooden blocks placed on a flat surface in an area protected from so that it is above water and snow levels and has strong winds. enough blocking to prevent it from settling into soft When G/GB unit is on the roof, move fan to desired ground. Locate parts far enough apart to permit air location using lifting points and fasten securely circulation, sunlight and space for periodic inspection. through mounting holes in base. Shims may be To minimize water accumulation, place all fan parts on necessary depending upon roofing material thickness. blocking supports so that rain water will run off. The motor amperage and voltage ratings must be Do not cover parts with plastic film or tarps as these checked for compatibility to supply voltage prior to cause condensation of moisture from the air passing final electrical connection. For G/GB installations, the through heating and cooling cycles. electrical supply should be routed through the conduit Fan wheels should be blocked to prevent spinning chase located between the curb cap and the bottom caused by strong winds. of the motor compartment. Wiring must conform to Inspection and Maintenance local and national codes. During Storage Storage While in storage, inspect fans once per month. Keep a record of inspection and maintenance performed. Fans are protected against damage during shipment. If the unit cannot be installed and operated If moisture or dirt accumulations are found on parts, immediately, precautions need to be taken to prevent the source should be located and eliminated. At each deterioration of the unit during storage. The user inspection, rotate the wheel by hand ten to fifteen assumes responsibility of the fan and accessories revolutions to distribute lubricant on motor. If paint while in storage. The manufacturer will not be deterioration begins, consideration should be given responsible for damage during storage. These to touch-up or repainting. Fans with special coatings suggestions are provided solely as a convenience to may require special techniques for touch-up or repair. the user. Machined parts coated with rust preventive should be Indoor-The ideal environment for the storage of restored to good condition promptly if signs of rust occur. Immediately remove the original rust preventive fans and accessories is indoors, above grade, in a - low humidity atmosphere which is sealed to prevent coating with petroleum solvent and clean with lint the entry of blowing dust, rain or snow. Temperatures free cloths. Polish any remaining rust from surface should be evenly maintained between 30° to 110°F with crocus cloth or fine emery paper and oil. Do not (-1°to 43°C) (wide temperature swings may cause destroy the continuity of the surfaces. Thoroughly condensation and "sweating" of metal parts). All wipe clean with Tectyl®506 (Ashland Inc.) or the accessories must be stored indoors in a clean, dry equivalent. For hard to reach internal surfaces or for atmosphere. occasional use, consider using Tectyl®511M Rust Preventive, WD-40®or the equivalent. Remove any accumulations of dirt, water, ice or snow Removing From Storage and wipe dry before moving to indoor storage. To avoid "sweating" of metal parts, allow cold parts to As fans are removed from storage to be installed reach room temperature. To dry parts and packages, in their final location, they should be protected and use a portable electric heater to get rid of any maintained in a similar fashion until the fan equipment moisture buildup. Leave coverings loose to permit air goes into operation. circulation and to allow for periodic inspection. The unit should be stored at least 31/2 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. Downblast Centrifugal Roof Exhaust NEI Installation Typical Roof Mounting Installation 1. On the roof surface, cut an appropriate sized hole 11. Mount and wire safety disconnect switch under and follow manufacturer's instructions on curb motor cover. Wire control switches at ground installation. Caulk and flash the curb to ensure a level, refer to Figure 4. water tight seal. 12. Replace motor cover. Roof Curb Installation Typical Wiring Diagram MOTOR mom MOTOR mom SUPPLY VOLTAGE SUPPLY VOLTAGE 115/208-230/60/1 208-230/460/60/3 LI WU R C�\ �J-BO% �J-BOX ■ L2 4Figure 4 Vari-Green'Wiring " For Vari-Green wiring, refer to the Vari-Green s. Motor and Controls Installation, Operation and Maintenance Manual for complete wiring and � operation� instructions. yA 2. If unit is equipped with a backdraft damper, it should be installed now. 3. Remove motor cover. Access to the motor compartment is accomplished by removing the screws as shown in Figure 3, page 2. 4. On GB Belt Drive fans, use the lifting lugs on the drive frame or bearing plate to lift and place the unit on top of roof curb. Refer to Figure 2, page 2. 5. On G Direct Drive fans, lift and place the unit on top of roof curb using hooks under the lip of the shroud. Refer to Figure 1, page 2. 6. Secure fan to curb using a minimum of eight lag screws, metal screws or the suitable fasteners. Shims may be required depending upon curb installation and roofing material. Note:Severe duty applications may require additional fasteners. See page 6. 7. Verify power line wiring is de-energized before connecting fan motor to power source. 8. Connect power supply wiring to the motor as indicated on the motor nameplate or terminal box cover. Check the power source for compatibility with the requirements of your equipment. 9. Check fan wheel for free rotation, recenter if necessary. • Check wheel fastener(s)for tightness. 10. Check all fasteners for tightness. umi Downblast Centrifugal Roof Exhaust 'A G Direct Drive GB Belt Drive Figure 5-Typical Roof Mounting Installation Figure 6-Typical Roof Mounting Installation /� Disconnect Disconnect aiill Screws comma. r ;.,,f-,J L .vn) (-- 3(19) '—_I I 8or12in. 3/ain.- Sor12in. (203 or 305) (19) (203 or 305) Wiring by Others ,d// 6/( 6// ( Wiring by Others / ( / Damper--ii Damper d/Damer 6-i 11/4 in. Recommended Duct 1 Ya in. 11/4 in, Recommended Duct 1 Ya in. —> and Damper Size F— —> and Damper Size –� 4 (32) (32) (32) (32) 4--Recommended Roof—). Dimensions shown in c Recommended Roof—> Opening inches(mm) Opening ROtit "Approx, Roof *Approx, Model Curb Cap pamper Opening W : - Model Curb Cap Damper Opening Weight G 060,065,070,075 17(432) 8(203) 101/2(267) 18(8) GB 071,081,091 19(483) 12(305) 141/2(368) 58(26) G 080,085,090,095 17(432) 10(254) 121/2(318) 26(12) GB 101,101HP 19(483) 12(305) 141/2(368) 63(29)' G 097,098,099 19(483) 12(305) 141/2(368) 57(26) GB 121 19(483) 12(305) 141/2(368) 66(30) G 103,103 HP 19(483) 12(305) 141/2(368) 62(28) GB 131 19(483) 12(305) 141/2(368) 67(30) G 123 19(483) 12(305) 141/2(368) 65(30) GB 141,141HP 22(559) 16(406) 181/2(470) 83(38) G 133 19'(483) 12(305) 141/2(368) 66=(30) GB 161,161HP 22(559) 16(406) 181/2(470) 89(40) G 143,143 HP 22(559) 16(406) 181/2(470) 76(35) GB 180,180HP 30(762) 18(457) 201/2(521) 125(57) G 163 22(559) 16(406) 18112(470) 80(36)" GB 200,200HP 30(762) 18(457) 201/2(521) 138(63)' - G 183 30(762) 18(457) 201/2(521) 119(54) GB 220,220HP, 34(864) 24(610) 261/2(673) 158(72) G 203 30(762) 18(457) 201/2(521) 130(59) 240,240HP •All dimensions are in inches(millimeters). GB 260 40(1016) 30(762) 32'/2(826) 305(138) Approximate weight shown in pounds(kilograms)is the largest GB 300,300HP 40(1016) 30(762) 321/2(826) 320(145) cataloged Open Drip Proof motor. GB 330 46(1168) 36(914) 381/2(978) 385(175) •The roof curb should be 11/2 in.(38 mm)less than the curb cap to GB 360,360HP 46(1168) 36(914) 381/2(978) 403(183) allow for roofing and flashing. GB 420 52(1321) 42(1067) 441/2(1130) 495(225) GB 480 52(1321) 48(1219) 501/2(1283) 623(283) GB 500 64(1626) 54(1372) 561/2(1435) 687(312) GB 540 64(1626) 54(1372) 561/2(1435) 748(339) •All dimensions are in inches(millimeters). 'Approximate weight shown in pounds(kilograms)is the largest cataloged Open Drip Proof motor. •The roof curb should be 11/2 in.(38 mm)less than the curb cap to allow for roofing and flashing. Ei. Downblast Centrifugal Roof Exhaust Ile , • Mounting for Pre-Starting Checks Severe Duty Installations 1. Check all fasteners and setscrews for tightness. Fan to Curb Mounting: 5/16-inch self-drilling The wheel should rotate freely and be aligned as fasteners are to be installed on each side of fan shown in Figure 7. with one fastener 4 inches from each edge and one _ fastener in the center. Fasteners are to be equally r' , L spaced. Fan SizeFa$teners Overlap --) I _Gap ',Peret K--_ i- -_-A-2 fide + _< o2 3 T 180 to 240 5 z 260 9 Figure 7 �� iii�� Overlap Ganhim /In i� (32 m1) Model Sit In.(mm) in.(mm) r� �t�' r3zm,mn) G 060-095 - 3/32(2) Curb comer G 097-163 1/4(6) Anchor Detail GB 071-161 1/4(6) t - —RootDurb G 183 243 3/8(10) - Model GPF,GPFHL,GPFHD or Equivalent - Steel wind GB 180-240 3/8(10) High ratings-42 in.Tall Max 4/0° Seismic ratings-24 In.Tall Max GB 260-540'. 1/2(13) Steel Welded Construction.Tal -- 2. Wheel position is preset and the unit is test run at Curb to Deck Mounting: Fasteners need to be the factory. Movement may occur during shipment located on all four sides of the curb. and realignment may be necessary. Root Curb .Root Curb 3. Only GB model - Centering wheel across inlet 3/8 in.(t0 mm)S.S.Hilt!Kwik Bolt Three Expansion Anchors 1/4 in.-14 Sea-Drilling Screw can be accomplished by loosening the bolts Min.2-1/2 in.(64 MIT)Engagement M!^.'/2 in(13 mm)of Threads Through holding the drive frame to the shock mounts and ,x Ieseseese repositioning the drive frame. ew't< �-�- RootTruss '`'"�� ' " �"�' o�8ln/3mm)Thlck G and GB models - If further alignment is needed, 2500 Min.PSI 12 ga,Mln. Concrete loosen shrowd bolts and move shroud and motor to align wheel over inlet properly. Concrete Steel Deck Anchoring Deck Anchoring Wheel and inlet cone overlap can be adjusted by - Root Curb loosening the set screws in the wheel and moving 3/81n.(10 mm)Lag Bolt(Zinc Plated) the wheel to the desired position. For both G and Min.3!n.(76 mm)Thread Engagement (� GB models with wheel hubs and shaft pulleys utilizing a tapered bushinginterface, reference Wood Timber i'� `� \ p Min.4in(/02 mm) page 9 for the tapered bushing removal and move "ominalThlckneas the wheel to the desired position. GmMin.G=0.42 Specific Gravity °"umber Fan RPM should be checked and verified with a Timber Anchoring tachometer. High Wind Ratings Seismic Ratings NOTE: Installation instructions for seismic Fasteners Fasteners ratings are only recommendations. pan Size Curb Cap Size Sete-DollingPer Tal pan Size Per Total Final design must be determined by Screwize Side Side Structural Engineer of Record (SEOR) :: <_141 17x17 to 22x22 3 12 060-300 2 8 including requirements for curb (432x432 to 559x559 mm) 3/8„ construction, mounting of unit to curb and oc >141 26x26 to 40x40 3 12 330-540 3 12 mounting of curb to structure. (660x660 to 1016x1016 mm) 17x17 to 22x22 5 141 3 12 060-300 2 8 (432x432 to 559x559 mm) 1/4" 14 y 26x26 to 40x40 . >141 (660x660 to 1016x1016 mm) 4 16 330-540 3 12 <_141 17x17 to 22x22 3 12 060-300 2 8 - (432x432 to 559x559 mm) 3/8" >141 26x26 to 40x40 4 16 330-540 3 12 (660x660 to 1016x1016 mm) All dimensions are in inches(millimeters). 6 Downblast Centrifugal Roof Exhaust (i. • 4. Check wheel rotation (viewing from the shaft side) 8. For GB units: Belt tension can be adjusted by by momentarily energizing loosening four fasteners on the drive frame, see the unit. Rotation should �/ �' Figure 11. The motor plate slides on the slotted be clockwise as shown in adjusting arms and Figure 8 and correspond to v drive frame angles in rotation decal on the unit. !� i the same manner. If wheel rotation is incorrect, �' ��1�/� Four(4) fasteners —.go reverse two of the wiring in total. i' r leads or check motor wirin Clockwise Rotation g Identical fasteners on � �; , for single phase. Figure 8 opposing side must - � „ S i � also be loosened. WARNING Figure 11 Correct direction of wheel rotation is critical. 9. Sizes 071-161: Belts should be tensioned just Reversed rotation will result in poor air performance, enough to prevent slippage at full load. motor overloading and possible motor burnout. Note: Belts should have a slight bow on the slack AVERTISSEMENT side while running at full load, see Figure 12a. La turbine doit imperativement tourner dans le bon ID - sens. Une rotation en sens inverse entrainerait de mauvaises performances de soufflage, une10 I surcharge du moteur voire un grillage du moteur. Deflection= Belt Span yj Be 64 Span IMPORTANT le The fan has been checked for mechanical noises at Side the factory prior to shipment. If mechanical noise O should develop, suggested corrective actions are offered in the Troubleshooting section. Figure 12a Figure 12b IMPORTANT Over tightening will cause excessive bearing wear Sizes 180-540: Belt tension should be adjusted and noise. Too little tension will cause slippage at to allow 1/64 in. (0.397 mm) of deflection per inch startup and uneven wear. of belt span. For example, a 15 in. (381 mm) belt span should have 15/64 in. (0.234 mm) (or about Model GB Pre-Starting Belt Tension Checks 1/4 in. (6 mm)) of deflection with moderate thumb pressure at mid-point between pulleys, see 5. Always loosen tension enough to install belts Figure 12b. without stretching. Do not force belt(s) see 10. The adjustable motor pulley is factory set for Figure 9. Forcing the belts will break the cords and cause belt failure. the RPM specified. Speed can be increased by closing or decreased by opening the adjustable ...grA motor pulley. '/ 11. Any increase in speed represents a substantial increase in the horsepower required by the unit. 12. Motor amperage should always be checked to Figure 9 avoid serious damage to the motor when speed 6. For units with two groove pulleys, adjust so the is varied. tension is equal in both belts. 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 10. CORRECT WRONGWRONG WRONG II III III II air I 111.1111 logill, lair, Figure 10 Downblast Centrifugal Roof Exhaust is Operation Routine Maintenance 1. Before starting up or operating fan, check all DANGER fasteners for tightness. In particular, check the set screws in the wheel hub (or the tapered bushing Disconnect and secure to the "off" position all and pulleys if applicable). electrical power to the fan prior to inspection 2. While in the OFF position or before connecting the or servicing. Failure to comply with this safety fan to power, turn the fan wheel by hand to be sure precaution could result in serious injury or death. it is not striking the venturi or any obstacle. DANGER 3. Start the fan and shut it off immediately to check Pour ecarter les risques de blessure grave ou rotation of the wheel with directional arrow in the de mort, debrancher et verrouiller('alimentation motor compartment. electrique en position «Arret » avant tout controle 4. When the fan is started, observe the operation and ou entretien. check for any unusual noises. IMPORTANT 5. With the system in full operation and all ductwork Uneven cleaning of the wheel will produce an out of attached, measure current input to the motor and balance condition that will cause vibration in the fan. compare with the nameplate rating to determine if WARNING the motor is operating under safe load conditions. This unit should be made non-functional when 6. Keep inlets and approaches to fan clean and free cleaning the wheel or housing (fuses removed, from obstruction. disconnect locked off). IMPORTANT AVERTISSEMENT Adjust (tighten) belt tension after the first L'appareil doit etre rendu non operationnel lors 24-48 hours of operation. du nettoyage de la turbine ou du caisson (fusibles retires, sectionneur verrouille). Inspection Greasing of motors is only intended when fittings are provided. Many fractional horsepower motors are Inspection of the fan should be conducted at the permanently lubricated and should not be lubricated first 30 minute and 24 hour intervals of satisfactory after installation. Motors supplied with grease fittings operation. should be greased in accordance with manufacturers' 30 Minute Interval recommendations. Where motor temperatures do not = Inspect bolts, setscrews and motor mounting bolts. exceed 104°F(40°C), the grease should be replaced Adjust and tighten as necessary. after 2,000 hours of running time as a general rule. 24 Hour Interval Wheels require very little attention when moving clean air. Occasionally, oil and dust may accumulate Check all internal components. On GB unit only, causing imbalance. When this occurs, the wheel and inspect belt alignment and tension. Adjust and tighten housing should be cleaned to ensure smooth and as necessary. 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. Oil Downblast Oentrifugai Roof Exhaust , • Tapered Bushing Hub Installation Bushing Installation: and Removal 1. Clean all surfaces of hub and bushing to remove • For wheel hubs and shaft pulleys utilizing a tapered any oil or residue present and do not use any bushing interface, follow this procedure for installation lubricant to install bushing into the hub. For both and removal. There are two possible set ups for the standard and reverse mounting styles, the socket tapered bushing, both have the same procedure, but head cap screws are adjustable from the inlet of orientation of the hub varies. the fan. Tapered Bushing Removal: 2. Standard Mounting: Slide the bushing and shaft 1. If present, loosen the setscrew holding the bushing key onto the fan shaft followed by the wheel and and shaft key in place. hub assembly. If present, use the keyway setscrew to hold the shaft key and bushing in place but DO 2. Loosen and remove the socket head cap screws NOT overtighten as this can damage the bushing. which fasten the bushing to the hub as shown in Align the unthreaded holes of the hub with the the section views and examples of Figures 13-16. threaded holes of the tapered bushing. Standard Mounting Reverse Mounting Reverse Mounting: Slide the wheel and hub assembly onto the fan shaft followed by the — bushing and shaft key. If present, use the keyway 111 setscrew to hold the shaft key and bushing in place - QI u e _ - ii @B rB but DO NOT overtighten as this can damage the - bushing. Align the unthreaded holes of the tapered - bushing with the threaded holes of the hub. 111 . 3. Install the two bushing socket head cap screws into the aligned holes by hand (or without Figure 13 _ Figure 14 excessive torque) until the heads of the socket head cap screws are seated against the mating Hub a �)h surface. � y,Bushing ; " 4. Adjust the height of the wheel in the fan relative • g �i►�i /Hub `,...„..1,� ` / to the inlet venturi then tighten the two socket ��— t •�,�� t : head cap screws an eighth turn at a time in an o�: '�o alternating fashion and to a torque of 10 ft-lbs. (itigic_17(� Bushing Washers-•® , Cap Screws-;3Washers-..® % Belt and Bearing Maintenance - Cap Screws for GB Model 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. . e"eV 2 2. Matched belts should always be used on units #i, '" with multi-groove pulleys. , `B r �., �.� 3. For belt replacement, loosen the tensioning device ��, _ .F enough to allow removal of the belt by hand. 4. Once installed, adjust belts as shown in "Pre-Starting Checks." Figure 15 Figure 16 Standard Bushing Orientation Reverse Bushing Orientation 5. To ensure tightness, check pulley setscrews. Proper keys must be in keyways. 3. Standard Mounting: Take the two socket head 6. Fan RPM should not be readjusted. Only use cap screws that were removed and install them pulleys of identical size and type when replacing into the visibly threaded holes on the wheel hub. pulleys. Reverse Mounting: Install the two socket head 7. Shaft bearings can be classified in two cap screws into the visibly threaded holes of thegroups: relubricating and non-relubricating. All bushing flange, non-relubricating bearings on model GB fans 4. Once both socket head cap screws are installed, are factory lubricated and require no further - tighten them an eighth of a turn at a time, lubrication under normal use (between -20° alternating between the two until the hub comes to 180°F(-29°to 82°C) in a relatively clean loose from the bushing. environment). Ill Oownblast Centrifugal Roof Exhaust 9 8. On GB belt driven fans, the standard cast pillow Fan Inlet Connections block bearings are factory lubricated and are provided with external grease fittings. Annual In order to assure proper fan performance, caution lubrication is recommended, or more frequently must be exercised in fan placement and connection if needed (See Table 2). Do not over-grease. Use to the ventilation system. Obstructions, transitions, only one or two shots of lubricant with a hand poorly designed elbows, improperly selected gun. Maximum hand gun rating is 40 psi. Rotate dampers, etc., can cause reduced performance, bearings during lubrication where good safety excessive noise and increased mechanical stress. practice permits. Caution should be employed to For performance to be as published, the system must prevent over packing or contamination. provide uniform and stable airflow into the fan. 9. Grease fittings should be wiped clean. The unit ____....soism.__ ,.,.,..,.,.. should be in operation while lubricating. Extreme Poor Poor care should be used around moving parts. 10. Grease should be pumped in very slowly until a limilli !moi. mom slight bead forms around the seal. A high grade J L , t lithium base grease should be used. (See Table 3) sossoss 11. Duringthe first few months of operation, check bearing setscrews periodically to r� ------_____ ensure tightness. Dampers must open fully. Avoid sharp turns or 12. If unit is to be left idle for an extended period, Use motorized dampers in entrance conditions which remove belts and store in a cool, dry place to low airflow applications to cause uneven flow.Use reduce losses. turning vanes in elbows to avoid premature belt failure. reduce adverse effects. Recommended Bearings Lubrication ......._ Frequency in Months Good _ NOTE: If unusual environment conditions exist ��- Good (extreme temperature, moisture or contaminants) r�7� Millirk— more frequent lubrication is required. MIAMI em mir i tar MA= A good qualitylithium basegrease, conformingto > l I l NLGI Grade 2 consistency, such as those listed in Table 3 may be used. Table 2:Suggested Fan Bearing Lubrication Intervals IntervalTYp®©f Service Provide uniform airflow at Provide uniform airflow at (months)' fan inlet and through the fan inlet to assure optimum damper to assure optimum performance. 1 to 3 Heavy duty in dirty,dusty locations;high ambient performance.The curb temperatures;moisture laden atmosphere;vibration. cap should be three wheel 12 to 24 hours per day,heavy duty,or if moisture is diameters from the radius. 3 to 6 present Use turning vanes in duct when possible. 6 to 12 8 to 16 hours per day in clean,relatively dry atmosphere 12 to 18 Infrequent operation or light duty in clean atmosphere Table 3:Grease Manufacturers Manufacturer Grease(NLGI#2) U.S.Electric Motors Grease No.83343 Chevron U.S.A. Inc Chevron SRI Grease#2 Mobilith Mobil Oil Corporation Mobil 532 Premium BRB#2 Texaco, Inc. Texaco Multifak#2 Amoco Oil Co. Rykon Premium#2 Exxon Unirex N2 I Shell B Shell Alvania#2 10 Downblast centrifugal Roof Exhaust Ed Troubleshooting • WARNING AVERTISSEMENT'. Before taking any corrective action, make certain Avant d'entreprendre toute action corrective, unit is not capable of operation during repairs. s'assurer que l'appareil ne pourra pas fonctionner durant les reparations. PROBLEM CAUSE CORRECTIVE ACTION Wheel rubbing inlet Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars on shaft. V-belt drive Tighten pulleys on motor/fan shaft.Adjust belt tension. Align pulleys properly, see page 7, Figure 9-10. Replace worn belts or pulleys. Bearings Replace defective bearing(s). Lubricate bearings. Tighten collars and fasteners. Wheel unbalance Clean all dirt off wheel. Check wheel balance, rebalance in place if necessary. Excessive Belts too tight or too loose Adjust tension, see page 7, Figure 12a-b. noise Wheel improperly aligned and or vibration rubbing Center wheel on inlet, see page 6, Figure 7. Loose drive or motor pulleys Align and tighten. See"Pre-Starting Checks", see page 6. Foreign objects in wheel or Remove objects, check for damage or unbalance. housing Fan base not securely anchored Secure properly. Motor hood loose and rattling Tighten screws securing motor hood. Defective or loose motor Replace motor with same frame size, RPM-HP. bearings High Fan Check rotation of wheel, see page 7, Figure 8. Reduce fan speed. horsepower Duct system Resize ductwork. Check proper operation of face and bypass dampers. Check filters and access doors. Electrical supply Check fuses/circuit breakers. Check for switches off. Check for correct supply voltage. Fan does Drive Check for broken belts. Tighten loose pulleys. not operate Motor Assure motor is correct horsepower and not tripping overload protector. Lubrication Check for excessive or insufficient grease in the bearing. Mechanical Replace damaged bearing. Relieve excessive belt tension. Align bearings. Check for bent shaft. Belt slippage Adjust tension or replace bad belts, see page 7. Motor Over/Under line voltage Contact power company. overloads Check motor wiring (page 4)verify motor is wired for correct or overheats Incorrect wheel rotation rotation. Wheel RPM too high Check drives or slow down fan by opening variable pitch pulley on motor shaft. Undersized motor Check motor ratings with catalog speed and air capacity chart. Motor wired incorrectly Check motor wiring to wiring diagram located on fan motor. System resistance too high Check system: Proper operation of backdraft or control dampers, obstruction in ductwork, clean dirty filters. Unit running backwards Correct as shown on page 7, Figure 8. Excessive dirt buildup on wheels Clean wheel. Reduced Improper wheel alignment Center wheel on inlets, see Pre-Starting Checks on page 6, Figure 7. airflow Dampers closed Inspect and repair. Blocked duct/clogged filter Clean or replace. Belt slippage Replace and adjust tension. Speed too slow Check for correct drives. Downblast Centrifugal Roof Exhaust mu Parts List 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 . . CAUTION , , A fan manufactured with an explosion resistant La presence d'un moteur antideflagrant sur un motor does not certify the entire unit to be explosion ventilateur ne garantit pas que tout l'appareil est proof. Refer to UL Listing Mark for the fans antideflagrant. Pour connaitre les emplois autorises approved usage. de l'appareil, voir son marquage de conformite UL. G Direct Drive GB Belt Drive Motor Cover ,iliMotor Cover l " �� Motor Shaft Pulley i :.,,,,, .,,,, ,,, Belt Motor Pulley Shock Bearings ,i,„...------- Mounts -41 �� � Drive Frame i Motor Shroud „ II' �--Hood Clip Assembly • Shock Mounts--'`'--.11'; Birdguard . # Shroud Brace ill IN , Fan Shaft Shroud °` Vertical Wheel ---)4► Birdguard Wheel "' g .Support I .' ""° ',:::,:i1:0441`7 Shroud Brace � Lower Conduit � ,," Curb Cap/ Chase R "' ora Windband �� � Windband Venturi .�� z ' Vertical Supporter _ Curb Cap! • . - �b Venturi Our Commitment ,Asaresult fourcom nitment to continuocts improvement,Greenheck reserves the right to change specifications rwithout notice. Specific Greenheek product warranties are located on greettheck.corn within the product area tabs and in the Library under Warranties. Greenheck's Centrifugal Roof Downblast Exhaust Fans AMCA Publication 410-96, Safety Practices for Users and catalog 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. i fJGREENHECK • Ul Building Value in Air. Phone:715.359.6171 •Fax:715.355.2399•Parts:800.355.5354•E-mail:gfcinfo@greenheck.com•Website:www.greenheck.com ® 471558•0 and GB,Rev.5,April 2016 Copyright 2016©Greenheck Fan Corporation