Centrifugal Roof and Wall Exhausters
Contents
1. W A Motor Motor Motor Spun Motor Plate Spun Motor Plate Spun Motor Plate ES Baffle Baffle Baffle Wheel Assembly Wheel Assembly Wheel Assembly Bird Screen Wall Flange Bird Screen Wall Flange Bird Screen Wall Flange Isolator 3 Isolator 4 Isolator 4 Post 4 Post 4 Post 8 Wind Band Wind Band Wind Band Brace 4 Brace 8 Power Assembly Shatt Power Assembly Shaft Power Assembly Shaft Bearing 2 Bearing 2 Bearing 2 Drive Sheave Drive Sheave Drive Sheave Driven Sheave Driven Sheave Driven Sheave Belt Set Belt Set Belt Set Vent Tube Grommet 2 Vent Tube Grommet 2 Vent Tube Grommet 2 ACRU D Parts List ar X CH Qama E Jal le Kos T T EEN a es Ji th e x ACRU D Parts Description Top Cap Lid Top Cap Cylinder Top Cap Clip 4 Motor Motor Motor Plate Spun Motor Plate Baffle Baffle Wheel Assembly Wheel Assembly Bird Screen Bird Screen Base Base Conduit Conduit Isolator 4 Isolator 4 Upper Post 4 Upper Post 4 Lower Post 4 Wind Band Wind Band Brace 4 Vent Tube Vent Tube Grommet 2 Grommet 2 70 100 Top Cap Se2. a a JO E ACRU D Sizes 70 100 8 SR St saaa la D ia O D 14 7 8 ACRU D Sizes 120 195 ACRU B Parts List ACRU B Parts Description w a 270 400 Top Cap Lid Top Cap Cylinder la Top Cap Lid Top Cap Cylinder Top Cap Lid Top Cap Cylinder VE 19 17 e Top Cap Clip 4 Top Cap Clip 4 Top Cap Clip 8 Motor Motor Motor Spun Motor Plate Spun Motor Plate Spun Motor Plate Baffle Baffle Baffle Wheel Assembly Wheel Assembly Wheel Assembly Bird Screen Bird Screen Bird Screen Base Base Base Conduit Conduit Conduit Isolator 3 Isolator 4 Isolator 4 Upper Post 4 Upper Post 4 Upper Post 8 Lower Post 4 Lower Post 4 Lower Post 8 Wind Band Wind Band Wind Band Brace 4 Brace 8 Power Assembly Power Assembly Power Assembly Shaft Shaft Shaft Bearing 2 Bearing 2 Bearing 2 Drive Sheave Drive Sheave Drive Sheave Driven Sheave Driven Sheave Driven Sheave Belt Set Belt Set Belt Set Vent Tube Vent Tube Vent Tube Grommet 2 Grommet 2 Gr
3. RA COOK AC Centrifugal Roof and Wall Exhausters INSTALLATION OPERATION AND MAINTENANCE This publication contains the installation operation and maintenance instructions for standard units of the AC Centrifugal Roof and Wall Exhausters e ACE D ACE B e ACW D ACW B ACW HP ACW XP e ACRU D ACRU B ACRU HP ACRU XP Carefully read this publication and any A supplemental documents prior to any installation or maintenance procedure Loren Cook AC catalog provides additional information describing the equipment fan performance available accessories and specification data For additional safety information refer to AMCA publication 410 96 Safety Practices for Users and Installers of Industrial and Commercial Fans All of the publications listed above can be obtained from Loren Cook Company by phoning 417 869 6474 extension 166 by FAX at 417 832 9431 or by e mail at info lorencook com For information and instructions on special equipment contact Loren Cook Company at 417 869 6474 AWARNING Rotating Parts amp Electrical Shock Hazard Disconnect electric power before working on unit Follow proper lockout tagout procedures to ensure the unit cannot be energized while being installed or serviced A disconnect switch should be placed near the fan in order that the power can be swiftly cut off in case of an emergency and in order that maintenance personnel are provided complete control of the po
4. You may have other legal rights which vary from state to state For fans provided with motors the motor manufacturer warrants motors for a designated period stated in the manufacturer s warranty Warranty periods vary from manufacturer to manufacturer Should motors furnished by Loren Cook Company prove defective during the designated period they should be returned to the nearest authorized motor ser vice station Loren Cook Company will not be responsible for any removal or installation costs LOREN COOK COMPANY Corporate Offices 2015 E Dale Street Springfield MO 65803 417 869 6474 lorencook com 12 AC IOM December 2013
5. motor and cause serious damage For 3 phase motors if the fan is running in the wrong direction check the control switch It is possible to interchange two leads at this location so that the fan is operating in the correct direction Inspect wheel to inlet clearance Wheels may shift in shipment To realign wheel to inlet shift upper bearing so there is an equal radial clearance between the wheel and inlet Refer to wheel to inlet clearance on page 6 Recommended Torque for Setscrews Bolts IN LB o Setscrews Recommended Key Hex Torque Inch Ibs Hole own Bolts Size Across Wrench Flats Min Max Size Torque inch Ibs No 10 3 32 28 33 3 8 16 240 1 4 1 8 66 80 1 2 13 600 5 16 5 32 126 156 5 8 11 1200 3 8 3 16 228 275 3 4 10 2100 7 16 7 32 348 384 HE 2040 1 2 1 4 504 600 1 8 3000 5 8 5 16 1104 1200 1 1 8 7 4200 3 4 3 8 1440 1800 1 1 4 7 6000 Operation Lock out all the primary and secondary power sources 2 Inspect and tighten fasteners and setscrews particularly fan mounting and bearing fasteners Refer to Torque chart 3 Inspect belt tension and pulley alignment Refer to Belt and Pulley Installation page 4 4 Inspect motor wiring Refer to Wiring Installation Ensure belt touches only the pulleys Rotate the wheel to ensure it rotates freely a oo 7 Ensure fan and ductwork are clean a
6. pulleys To change fan speed perform the following 1 Loosen setscrew on driver motor pulley and remove key if equipped 2 Turn the pulley rim to open or close the groove facing If the pulley has multiple grooves all must be adjusted to the same width 3 After adjustment inspect for proper belt tension Maximum RPM with standard or reenforced wheel 404T and larger ACE B ACRU B amp ACRU HP amp ACW B ACW HP Size Standard Reinforced Standard Reinforced Standard Reinforced ACW XP ACRU XP 60 1981 70 1941 80 1806 z 100 2013 2002 120 1669 7 1671 135 1574 1574 150 1519 1520 165 1296 e 1295 S z 2508 180 1513 2 1546 S S 2396 195 1348 S 1353 z 2100 210 1190 1197 2126 225 1043 S 1086 1879 245 885 901 1616 270 752 z 766 S 1656 300 837 837 1391 330 716 716 1182 365 624 624 1132 402 539 539 445 463 463 490 360 360 403 540 347 401 z Speed Reduction Open the pulley in order that the belt rides deeper in the groove smaller pitch diameter Speed Increase Close the pulley in order that the belt rides higher in the groove larger pitch diameter Ensure that the RPM limits of the fan and the horsepower limits of the motor are maintained Replacing Pulleys and Belts 1 2 Loosen the motor plate mounting bolts to relieve the belt Clean the motor and fan shafts tension Rem
7. ble of intermittent highs of 250 F Bearings should be relubricated in accordance with the condition chart below Conditions Chart RPM Temp F __Greasing Interval Up to 1000 30 to 120 120 to 200 30 to 120 120 to 200 30 to 120 120 to 200 Any Speed lt 30 Any Speed gt 200 For moist or otherwise contaminated installations divide the interval by a 6 months 2 months 3 months 1 month 1 month 2 weeks Consult Factory 1 week 1000 to 3000 Over 3000 factor of 3 For vertical shaft installations divide the interval by a factor of 2 For best results lubricate the bearing while the fan is in operation Pump grease in slowly until a slight bead forms around the bearing seals Excessive grease can damage seal and reduce life through excess contamination and or loss of lubricant In the event that the bearing cannot be seen use no more than three injections with a hand operated grease gun Motor Bearings Motors are provided with prelubricated bearings Any lubrication instructions shown on the motor nameplate supersede instructions below Direct Drive 1050 1075 1200 1300 amp 1500 rpm units use a prelubricated sleeve bearing that has a oil saturated wicking material surrounding it The initial factory lubrication is adequate for up to 10 years of operation under normal conditions However it is advisable to add lubricant after 3 years Use only LIGHT grade mineral oil or SAE 10W o
8. easily Over 48 slip into the OFFSET ANGULAR OFFSET ANGULAR grooves onthe gt p pulleys Never N pry roll or force the belts over the m rim of the pulley A CENTER reached For proper tension a z al deflection of approximately 1 4 per foot of center distance should be obtained by firmly pressing the belt Refer to Figure 1 Lock the motor plate adjustment bolts in place Ensure pulleys are properly aligned Refer to Figure 2 al GAP L GAP Pulley Alignment Pulley alignment is adjusted by loosening the motor pulley d setscrew and by moving the motor pulley on the motor shaft Figure 3 Figure 2 indicates where to measure the allowable gap for the drive alignment tolerance All contact points indicated by WXYZ are to have agap less than i the tolerance shown in the table When the pulleys are not the same width the allowable gap must be adjusted by half of the difference in width Figure 3 illustrates using a carpenter s square to adjust the position of the motor pulley until the belt is parallel to the longer leg of the square Bearing Replacement The fan bearings are pillow block type ball bearings 1 Remove the old bearing 2 Remove any burrs from the shaft by sanding 3 Slide new bearings onto the shaft to the desired location and loosely mount bearings onto the bearing support Bearing bo
9. g structure must exceed the structural requirements based on the environmental loading derived from the applicable building code for the site The local code official may require variations from the recognized code based on local data The licensed engineer of record will be responsible for prescribing the correct attachment based on construction materials code requirements and environmental effects specific to the installation Failure to follow these instructions could result in death or serious injury Wall Exhauster Installation If your fan is a wall exhauster a mounting template is shipped with the fan Use the template to locate the necessary lag screws or anchor bolts on the wall The fan can then be lifted and attached easily Secure with lag screws anchor bolts or other suitable fasteners Damper Installation If your fan is supplied with dampers follow the directions below If your fan does not include dampers proceed to Belt and Pulley Installation 1 Place the damper inside the curb or inside the duct work Ensure the damper will open freely for the correct direction of the airflow 2 Secure to curb at the damper shelf 3 Drill hole in the curb shelf for conduit needed for motor wiring 4 Operate the dampers manually to ensure the blades move freely 5 Install fan over curb while aligning the conduit location with the conduit hole in the curb Wiring Installation NOTICE All wiring should be in accordance wit
10. h local ordinances and the National Electrical Code NFPA 70 Ensure the power supply voltage frequency and current carrying capacity of wires is in accordance with the motor nameplate See page 3 for diagram Upblast units have two wiring conduits The vertical conduit comes plugged The horizontal conduit is directly above the vertical conduit For Units Without A Junction Box An approved metal field wiring compartment must be secured to the unit with two screws in order that the box does not rotate All wires must be protected from abrasion where they enter and exit the wiring compartment The green ground wire from the motor must be secured under the green ground screws inside the field wiring compartment using a closed loop connector Complete connections in accordance with the wiring diagram on the motor For Units With A Junction Box Pull wires through the appropriate conduit Protect wires from abrasion where they enter the field wiring compartment and complete connections in accordance with the diagram on the motor Leave enough slack in the wiring to allow for motor movement when adjusting belt tension Some fractional motors have to be removed in order to make the connection with the terminal box at the end of the motor NOTICE Follow the wiring diagram in the disconnect switch and the wiring diagram provided with the motor Correctly label the circuit on the main power box and always identify a closed switch to promote
11. il up to 30 drops If the unit has been stored for a year or more it is advisable to lubricate as directed above For units in severe conditions lubrication intervals should be reduced to half Motors without sleeve bearings as described above will have grease lubricated ball or roller bearings Motor bearings without provisions for relubrication will operate up to 10 years under normal conditions with no maintenance In severe applications high temperatures or excessive contaminates it is advisable to have the maintenance department disassemble and lubricate the bearings after 3 years of operation to prevent interruption of service For motors with provisions for relubrication follow intervals of the table below Relubrication Intervals NEMA Frame Size 213T 365T Up to and Service including 184T Conditions PM PM PM Severe 1 yr 3 months 1 yr 3 months 6 months 1 months NOTICE Motors are provided with a polyurea mineral oil NGLI 2 grease All additions to the motor bearings are to be with a compatible grease such as Exxon Mobil Polyrex EM and Chevron SRI The above intervals should be reduced to half for vertical shaft installations Motor Services Should the motor prove defective within a one year period contact your local Loren Cook representative or your nearest authorized electric motor service representative Changing Shaft Speed All belt driven ventilators 5HP or less are equipped with variable pitch
12. lts and setscrews should be loose enough to allow shaft positioning 4 Correctly position the wheel and tighten the bearing bolts securely to the bearing support 5 Align setscrews bearing to bearing and secure tightly to the shaft NOTICE Never tighten both pairs of setscrews before securing bearing mounting bolts This may damage the shaft 6 Inspect the wheel position again If necessary readjust by loosening the bearing bolts and setscrews and repeat from step 3 Wheel Replacement 1 Drill two holes approximately centered between the shaft and the edge of the hub OD with the following dimensions e 1 4 diameter e 3 8 to 1 2 deep e 180 apart in face of hub 2 Tap 1 4 holes to 5 16 thread with the 5 16 hole tap Do not drill or tap any larger than recommended 3 Screw the puller arms into the tapped holes full depth of threads 3 8 to 1 2 approximately Align center of puller with center of shaft Make certain all setscrews in hub normally a quantity of two are fully removed Work puller slowly to back wheel off the shaft Recommended Puller Lisle No 45000 Sterling Wheel Puller This puller is available at most automotive parts retail outlets Above Drilled hole placement Right Wheel puller Wheel to Inlet Clearance The correct wheel to inlet clearance is critical to proper fan performance This clearance should be verified before initial start up since rough handling during shipment could cau
13. nd free of debris 8 Close and secure all access doors 9 Restore power to fan Start up Turn on the fan In variable speed units set the fan to its lowest speed Inspect for the following e Direction of rotation e Excessive vibration e Unusual noise e Bearing noise e Improper belt alignment or tension listen for squealing e Improper motor amperage or voltage If a problem is discovered immediately shut the fan off Lock out all electrical power and check for the cause of the trouble Refer to Troubleshooting on page 6 Inspection Inspection of the fan should be conducted at the first 30 minute 8 hour and 24 hour intervals of satisfactory operation During the inspections stop the fan and inspect as instructed 30 Minute Interval Inspect bolts setscrews and motor mounting bolts Adjust and tighten as necessary 8 Hour Interval Inspect belt alignment and tension Adjust and tighten as necessary 24 Hour Interval Inspect belt tension Adjust and tighten as necessary Maintenance Establish a schedule for inspecting all parts of the fan The frequency of inspection depends on the operating conditions and location of the fan Inspect fans exhausting corrosive or contaminated air within the first month of operation Fans exhausting contaminated air should be inspected every three months Regular inspections are recommended for fans exhausting non contaminated air Regular inspections of the Grease Terminat
14. o L3 Ly Lo ly Ly L L3 To reverse interchange any 2 line leads 2 Speed 2 Winding 3 Phase Ta Low Speed Tg Low Speed T4 Low Speed M4 Li Motor La tine T44 _High Speed L3 T42 __ High Speed ahh Speed To reverse High Speed interchange leads T44 and Tyo Low Speed interchange leads T4 and Ts Both Speeds interchange any 2 line leads Typical Damper Motor Schematic Fan dot Oo L2 Motor D So f rn Transformer Transformer l all TT I l Damper Second l Damper Motor Motor For 3 phase damper motor voltage should be the same between L4 and Lo For single phase application disregard L3 Damper motors may be available in 115 230 and 460 volt models The damper motor nameplate voltage should be verified prior to connection A transformer may be provided in some installations to correct the damper motor voltage to the specified volt age Final Installation Steps 1 Ensure fasteners and set screws particularly fan mounting and bearing fasteners are tightened according to the recommended torque shown on the table below 2 Inspect for correct amperage with an ammeter and correct voltage with a voltmeter 3 Ensure that all accessories are installed 4 Test the fan to be sure the rotation is the same as indicated by the arrow marked Rotation NOTICE Do not allow the fan to run in the wrong direction This will overheat the
15. ommet 2 Limited Warranty Loren Cook Company warrants that your Loren Cook fan was manufactured free of defects in materials and workmanship to the extent stated herein For a period of one 1 year after date of shipment we will replace any parts found to be defective without charge except for shipping costs which will be paid by you This warranty is granted only to the original purchaser placing the fan in service This warranty is void if the fan or any part thereof has been altered or modified from its original design or has been abused misused damaged or is in worn condition or if the fan has been used other than for the uses described in the company manual This warranty does not cover defects resulting from normal wear and tear To make a warranty claim notify Loren Cook Company General Offices 2015 East Dale Street Springfield Missouri 65803 4637 explaining in writing in detail your complaint and referring to the specific model and serial numbers of your fan Upon receipt by Loren Cook Company of your written complaint you will be notified within thirty 30 days of our receipt of your complaint in writing as to the manner in which your claim will be handled If you are entitled to warranty relief a warranty adjustment will be completed within sixty 60 business days of the receipt of your written complaint by Loren Cook Company This warranty gives only the original purchaser placing the fan in service specifically the right
16. or 2 are recommended Depending on the amount of grease discharged through the fan the Grease Terminator 2 should be changed every 30 to 45 days to ensure proper operation Any buildup of grease is easily seen during a visual inspection of the clear canister However if the Grease Terminator 2 becomes saturated grease will no longer be absorbed It is recommended the following inspections be conducted twice per year e Inspect bolts and setscrews for tightness Tighten as necessary Refer to Torque chart e Inspect belt wear and alignment Replace worn belts with new belts and adjust alignment as needed Refer to Belt and Pulley Installation page 4 e Bearings should be inspected as recommended in the Conditions Chart e Inspect for cleanliness Clean exterior surfaces only Removing dust and grease on motor housing assures proper motor cooling Fan Bearings NOTICE The fan bearings are provided prelubricated Any specialized lubrication instructions on fan labels supersedes information provided herein Bearing grease is a petroleum lubricant in a lithium base conforming to a NLGI 2 consistency If user desires to utilize another type of lubricant they take responsibility for flushing bearings and lines and maintaining a lubricant that is compatible with the installation A NLGI 2 grease is a light viscosity low torque rust inhibiting lubricant that is water resistant Its temperature range is from 30 F to 200 F and capa
17. ove the belt 3 7 Loosen the pulley setscrews and remove the pulleys from the shaft If excessive force is required to remove the pulleys a three jaw puller can be used This tool however can easily warp a pulley If the puller is used inspect the trueness of the pulley after it is removed from the shaft The pulley will need replacement if it is more than 0 020 inch out of true Clean the bores of the pulleys and place a light coat of oil on the bores Remove any grease rust or burrs from pulleys Place the fan pulley on the fan shaft and the motor pulley on the motor shaft Damage to the pulleys can occur when excessive force is used in placing the pulleys on their respective shafts After the pulleys have been correctly placed back onto their shafts tighten the pulley setscrews Belt and Pulley Installation Belt tension is determined by the sound of the belts when the fan is first started The belts will produce a loud squeal which dissipates after the fan is operating at full capacity If belt tension is too tight or too loose lost efficiency and damage may occur Do not change the pulley pitch diameter to change tension The change will result in a different fan speed 1 3 4 Slide motor plate X DISTANCE v until proper tension is L Loosen motor i Figure 2 plate adjustment Tolerance bolts and slide Up thru 12 motor plate so 12 through 48 that belts
18. ower Post 4 Lower Post 4 Lower Post 8 Lower Post 8 Brace 8 13 Power Assembly Power Assembly Power Assembly Power Assembly 15 Shaft Shaft Shaft Shaft 19 17 g Bearing 2 Bearing 2 Bearing 2 Bearing 2 Drive Sheave Drive Sheave Drive Sheave Drive Sheave Driven Sheave Driven Sheave Driven Sheave Driven Sheave Belt Set Belt Set Belt Set Belt Set ACW D Parts List ACW D Parts Description 120 195 Top Cap Lid Top Cap Cylinder Top Cap Clip 4 Motor Motor Segel AJ Ww bh Motor Plate Spun Motor Plate Baffle Baffle Wheel Assembly Wheel Assembly Oe AL Bird Screen Bird Screen Wall Flange Wall Flange oO OO NI ol Oo Post 4 Post 4 Deg S 13 Wind Band Wind Band Sizes 70 100 Brace 4 Grommet 2 Grommet 2 10 Vent Tube angled Vent Tube 5 7 11 1b la Gi d Sc 2 6 4 13 12 Sizes 120 195 ACW B Parts List 4 ACW B Parts Description e es es k w Top Cap Lid Top Cap Lid Top Cap Clip D Top Cap Cylinder Top Cap Clip 4 Top Cap Cylinder Top Cap Clip 4 Top Cap Cylinder Top Cap Clip 4
19. rect fan RPMs Incorrect voltage Overheated Bearings Improper bearing lubrication Excessive belt tension ACE D Parts List ACE D Parts Description Ts 70 100 120 180 Top Cap Lid Top Cap Cylinder Top Cap Clip 4 Motor Motor Motor Plate Motor Plate Baffle Baffle Wheel Assembly Wheel Assembly Bird Screen Bird Screen Top Cap Conduit Conduit Isolator 4 Isolator 4 Upper Post 4 Upper Post 4 Lower Post 4 N P i LA TIA Ch d i Sizes 120 180 ACE B Parts List ACE B Parts Description CW j 120245 27030 33050 Top Cap Lid Top Cap Lid Top Cap Lid Top Cap Lid i Top Cap Cylinder Top Cap Cylinder Top Cap Cylinder Top Cap Clip 4 Top Cap Clip 8 Top Cap Clip 8 Motor Motor Motor Motor Plate Motor Plate Motor Plate Baffle Baffle Baffle Baffle Wheel Assembly Wheel Assembly Wheel Assembly Wheel Assembly Bird Screen Bird Screen Bird Screen Bird Screen Base Base Base Base Conduit Conduit Conduit Conduit Isolator 3 Isolator 4 Isolator 4 Isolator 4 Upper Post 4 Upper Post 4 Upper Post 8 Upper Post 8 L
20. safety i e red tape over a closed switch 1 Remove the top cap which covers the motor assembly by unlatching the snap clips 2 For internal wiring run the electrical wire and conduit through the opening drilled in the damper shelf refer to Damper Installation then through the wiring conduit in the ventilator base to the motor compartment For external wiring run the wires through the horizontal conduit on upblast units or under top cap in downblast units 3 Pull the wires through and complete the wiring Single Speed Single Phase Motor When ground is required attach to ground A or B with no 6 thread forming screw To reverse interchange T 1 and T 4 Ground A Ground B 2 Speed 2 Winding Single Phase Motor Ground A When ground required attach to ground A or B with No 6 thread forming screw To reverse inter Ly change T 1 and T 4 Spas Line leads Low Speed High Speed L Ground B Single Speed Single Phase Dual Voltage Ground A o Ground A Ground B Ground B When ground required attach to ground A or B with No 6 thread forming screw To reverse interchange T 5 and J 10 leads 3 Phase 9 Lead Motor Y Connection 3 Phase 9 Lead Motor Delta Connection Low Voltage High Voltage Low Vol High Vol 208 230 Volts 460 Volts eeng ee Fee 456 7 98 eg 789 ER 6 74 95 883 789 1 42 3 456 19293 1020 3 738 af 1929 39 Ly L Le age Ly L
21. se a shift in fan components Refer to wheel inlet draw ing for correct overlap Adjust the overlap by loosening the wheel hub and mov ing the wheel along the shaft to obtain the correct value A uniform radial gap space between the edge of the cone and the edge of the We inlet is obtained by loosen ing the bearing bolts and set screws which will allow for correct repositioning e Us 60 165 3 16 180 245 1 4 270 300 5 16 330 365 3 8 402 7 16 445 490 1 2 e RADIAL CLEARANCE 540 13 16 OVERLAP Troubleshooting Problem and Potential Cause Low Capacity or Pressure Incorrect direction of rotation Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly Poor fan inlet conditions There should be a straight clear duct at the inlet Improper wheel alignment Excessive Vibration and Noise Damaged or unbalanced wheel Belts too loose worn or oily belts Speed too high Incorrect direction of rotation Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly Bearings need lubrication or replacement stan surge Overheated Motor Motor improperly wired Incorrect direction of rotation Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly Cooling air diverted or blocked Improper inlet clearance Incor
22. wer source Grounding is required All field installed wiring must be completed by qualified personnel All field installed wiring must comply with National Electric Code NFPA 70 and all applicable local codes Failure to follow these instructions could result in death or serious injury Receiving and Inspection Immediately upon receipt of an AC fan carefully inspect the fan and accessories for damage and shortage e Turn the wheel by hand to ensure it turns freely and does not bind e Check dampers if included for free operation of all moving parts e Record on the Delivery Receipt any visible sign of damage Handling Lift the fan by the shipping carton or lifting lugs provided under top cap NOTICE Never lift by the shaft motor or housing Storage If the fan is stored for any length of time prior to installation store it in its original shipping crate and protect it from dust debris and the weather Installation If the fan was delivered with the motor unmounted see the maintenance section for belt and pulley installation Lifting Lugs If the fan was purchased as a wall mount unit and a grease terminator or grease trough was not purchased a 1 1 16 inch diameter drain hole should be drilled at the bottom side of the fan for drainage AWARNING Code requirements and environmental effects The attachment of roof mounted fans to the roof curb as well as the attachment of roof curbs to the buildin
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