SQI - Loren Cook Company
Contents
1. Inlet View Discharge View Air Flow Description 180 210 225 402 Motor Plate Motor Plate Motor Plate Hex Bolt Hex Bolt Hex Bolt Inlet Panel Inlet Panel Inlet Panel Inlet Inlet Inlet Access Door Access Door Access Door Straightening Vane Straightening Vane Straightening Vane Driven Sheave Driven Sheave Driven Sheave Belt Set Belt Set Belt Set Driver Sheave Driver Sheave Driver Sheave see lle lel La OF Motor Motor Motor 11 Wheel Assembly Wheel Assembly Wheel Assembly Slot Cover Slot Cover Slot Cover Bearings Bearings Bearings Shaft Shaft Shaft 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 make2. 1 Damper Motor Motor J Transformer J Wiring Diagrams 3 Phase 9 Lead Motor Y Connection 3 Phase 9 Lead Motor Delta Connection Low Voltage High Voltage Low Voltage High Voltage 208 230 Volts 480 Vots 208 230 Volts 460 Volts 2126 7 98 9 789 338 3763495 BBS 1 462 43 456 19293 z e ae ETS ty a ig 1929 39 Ly lo lg Ly Lo lg Ly Lo L3 To reverse interchange any 2 line leads 2 Speed 1 Winding 3 Phase Motor High Speed Low Speed 1 1 H 2 Together 2 o L2 Line 3 3 o L3 Motor 4 ly 4 5 L2 Line 5 o Open I 6 L3 6 o To reverse interchange any 2 line leads Motors require magnetic control 2 Speed 2 Winding 3 Phase ly Lie Fad Ta Low Epa f Low Booed Ty High bpi Tia Hgh ipii Tiz Hgh Spid To reverse High Speed interchange leads T44 and Tyo Low Speed interchange leads T4 and T2 Both Speeds interchange any 2 line leads SQI D 70 90 White Line Black High 5 La Blue Medium eee nae o Line Red Low z z k NOTE Insulate Unused Leads Separately FSC WHITE fa sa D ade BSC BLACK See SQI Wiring Diagram for correct lead 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 be
3. See Troubleshooting Inspection Inspection of the fan should be conducted at the first 30 minute 8 hour and 24 hour intervals of satisfactory opera tion During the inspections stop the fan and inspect as per the chart below Wiring Diagrams Single Speed Single Phase Motor Ground A Ground B When ground is required attach to ground A or B with no 6 thread forming screw To reverse interchange T 1 and T 4 2 Speed 2 Winding Single Phase Motor Ground B When ground required attach to ground A or B with No 6 thread forming screw To reverse interchange T 1 and T 4 leads Single Speed Single Phase Dual Voltage Ground A Ground A Ly T5 Line J 10 L2 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 i r Schemati Typical Damper Motor Schematic sed has dainp r mo tor voltage should be the o L Fan aes same between L and Lo Motor 5 gt o ol For single phase applica tion disregard Lg Damper motors may be available in 115 230 and 460 volt models The damper motor nameplate voltage should be veri fied prior to connection A transformer may be provided in some instal lations to correct the damper motor voltage to the specified voltage ji q I Transformer l l l Damper Second lt
4. 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 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 8 SQI IOM Jan 2014
5. 0 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 ade quate 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 oil up to 30 drops If the unit has been stored for a year or more it is advisable to lubricate as directed above For VCR direct drive units and other 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 disassem ble 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 Up to and including 184T 1800 RPM and less and less and ss RPM tandard yrs 6 months yrs O aon S months T yr 3 months T yr 3 months 6 TONS 1 months Motors are provided with a polyurea mineral oil NGLI 2 grease All additions to the motor bearings are to be with a comparable grease such as Exxon Mobil Polyrex EM and Chevron SR
6. COOK j This publication contains the installation operation and maintenance instructions for standard units of the SQI Square Centrifugal Inline Fans Carefully read this publication and any supplemental documents prior to any installation or maintenance procedure Loren Cook catalog SQI 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 on special equipment contact Loren Cook Company Customer Service Department 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 power source Grounding is required All field installed wiring must be completed by qualified personnel All field installed wiring must comply with National Electric C
7. I 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 Company representative or your nearest authorized electric motor service representative Service Conditions 404T and larger Over 1800 RPM Changing Fan Speed All belt driven fans with motors up to and including 5 HP are equipped with variable pitch pulleys a Loosen setscrew on motor pulley b Open or close the groove facing to change the pitch diameter Speed Reduction Open the pulley in order that the belt rests deeper in the groove Speed Increase Close the pulley in order that the belt rests higher in the groove Ensure RPM limits of the fan and the horsepower limits of the motor are maintained c Retighten pulley setscrew on one of the flat areas of the motor shaft d After the adjustment is made check for proper belt Maximum RPM Maximum RPM Maximum RPM tension See the Belt and Pulley Installation section Pulley and Belt Replacement a Remove pulleys from their respective shafts b Clean the motor and fan shafts c Clean bores of pulleys and coat the bores with heavy oil d Remove grease rust or burrs from the pulleys and shafts e Remove burrs from shaft by sanding f Place fan pulley on fan shaft and mot
8. ation 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 direc tion as the arrows on the motor or belt drive assembly Bearings need lubrication or replacement Overheated Motor eMotor improperly wired Incorrect direction of rotation Make sure the fan rotates in same direc tion as the arrows on the motor or belt drive assembly Cooling air diverted or blocked Improper inlet clearance Incorrect fan RPMs Overheated Bearings eImproper bearing lubrication Excessive belt tension SQI D Parts List q Y q fo fe s Y is a Air Flow Description Discharge View Sizes 70 90 Hex Bolts Size 120 Size 135 Hex Bolt Hex Bolt Sizes 150 165 Hex Bolt Inlet Panel Inlet Panel Inlet Panel Inlet Panel Inlet Inlet Inlet Inlet Access Door Access Door Access Door Access Door Electric Box Electric Box Electric Box Electric Box Straightening Vanes Wheel Assembly Straightening Vanes Straightening Vanes Wheel Assembly Wheel Assembly Straightening Vanes Wheel Assembly Slot Cover Motor Motor Motor Motor SQI B Parts List
9. k c Inspect wheel to inlet clearance Ensure wheel does not rub against the inlet d Test the fan to ensure the rotation of the wheel is the same as indicated by the rotation label e Inspect for correct amperage with Figure 3 an ammeter and correct voltage with a voltmeter NOTICE Do not allow the fan to run in the wrong direction This will overheat the motor and cause seri ous 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 Operation Pre Start Checks a Lock out all the primary and secondary power sources b Inspect and tighten fasteners and setscrews particu larly fan mounting and bearing fasteners Refer to Torque chart c Inspect belt tension and pulley alignment d Inspect motor wiring e Ensure fan and ductwork are clean and free of debris f Close and secure all access doors g Restore power to the fan Start Up Turn the fan on In variable speed units set the fan to its lowest speed and 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 NOTICE f a problem is discovered immediately shut the fan off Lock out all electrical power and check for the cause of the trouble
10. l depth of the threads into the tapped holes Align center of the puller with the center of the shaft Ensure all setscrews in the hub normally two are fully removed d Slowly remove wheel from the shaft Above Drilled hole placement Right Wheel puller Recommended Puller Lisle No 45000 Sterling Wheel Puller This puller is avail able at most automotive parts retail outlets 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 cause a shift in fan compo nents Refer to wheel inlet drawing for correct overlap Adjust the overlap by loosening the wheel hub and moving the wheel along the shaft to obtain the cor rect value A uniform radial gap space between the edge of pI the cone and the edge of RAIET the inlet is obtained by loosening the inlet cone bolts and repositioning the inlet cone WHEEL SHROUD OVERLAP Ce o 70 165 3 16 180 245 1 4 270 300 5 16 330 365 3 8 402 7 16 Troubleshooting Problem and Potential Cause Low Capacity or Pressure eIncorrect direction of rotation Make sure the fan rotates in same direc tion as the arrows on the motor or belt drive assembly Poor fan inlet conditions There should be a straight clear duct at the inlet eImproper wheel alignment Excessive Vibr
11. lt 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 con ditions and location of the fan Inspect fans exhausting corrosive or contaminated air within the first month of operation Fans exhausting con taminated air airborne abrasives should be inspected every three months Yearly inspections are recommended for fans exhausting non contaminated air 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 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 Recommended Torque for Setscrews Bolts IN LB Setscrews Hold Down Bolts Recommended Torque Key Hex Across Flats in 3 Size 3 8 16 1 2 13 5 8 11 Wrench Torque Fan Bearings The fan bearings are provided prelubricated Any spe cialized lubrication instructions on fan labels supersedes information provided herein Bearing grease is a petroleum lubricant in a lithium base conforming to a NLGI 2 consis tency If use
12. ode NFPA 70 and all applicable local codes Failure to follow these instructions could result in death or serious injury Receiving and Inspection Carefully inspect the fan and accessories for any damage and shortage immediately upon receipt of the fan e Turn the wheel by hand to ensure it turns freely and does not bind e Inspect dampers for free operation of all moving parts e Record on the Delivery Receipt any visible sign of damage Handling Lift the fan by the base or lifting eyes NOTICE Never lift by the shaft motor or housing SQI Square Centrifugal Inline Fan INSTALLATION OPERATION AND MAINTENANCE MANUAL Storage If fan is stored for any length of time prior to installation completely fill bearings with grease or moisture inhibiting oil Refer to page 4 Store the fan in its original crate and protect from dust debris and weather To maintain good working condition of a SQL when it s stored outdoors or on a construction site follow the additional steps below e Cover the inlet and outlet and belt tunnel opening to prevent accumulation of dust and moisture in the housing e Periodically rotate the wheel and operate dampers if supplied to keep a coating of grease on all internal bearing parts e Periodically inspect the unit to prevent damaging conditions Installation To prevent damage to the fan during shipping motors 5 HP and larger and extremely heavy motors cast iron or se
13. or pulley on its shaft NOTICE Do not hammer the pulleys onto the shafts because this may damage the bearings g Tighten in place h Install belts on pulleys and align as described in the Belt and Pulley Installation section Bearing Replacement The SQI B fan bearings are pillow block ball bearings a Remove outer access door b Remove bolts screws to inner housing access doors Open and remove the inner access door to reveal bearings c Remove the old bearing d Remove any burrs from the shaft by sanding e Slide new bearings onto the shaft to the desired loca tion and loosely mount bearings onto the bearing sup port Bearing bolts and setscrews should be loose enough to allow shaft positioning f Correctly position the wheel and tighten the bearing bolts securely to the bearing plate g 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 h Inspect the wheel position again If necessary read just by loosening the bearing bolts and setscrews and repeat from step e Wheel Replacement a Drill two 1 4 diameter holes 180 apart centered approximately between the shaft and the outside diameter of the hub 3 8 to 1 2 in depth b Tap 1 4 holes to 5 16 thread with a 5 16 hole tap Do not drill or tap greater than recommended c Screw the puller arms to the ful
14. r desires to utilize another type of lubricant they take responsibility for flushing bearings and lines and maintaining a lubricant that is compatible with the installa tion 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 capable of intermittent highs of 250 F Bearings should be relubricated in accordance with the condition chart below 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 Conditions Chart Greasing Interval 30 to 120 120 to 200 30 to 120 120 to 200 30 to 120 6 months Up to 1000 2 months 3 months 1000 to 3000 1 month 1 month Over 3000 120 to 200 2 weeks Any Speed lt 30 Consult Factory gt 200 1 week Any Speed For moist or otherwise contaminated installations divide the interval by a factor of 3 For vertical shaft installations divide the interval by a factor of 2 Motor Bearings Motors are provided with prelubricated bearings Any lubri cation instructions shown on the motor nameplate supersede instructions below Direct Drive 105
15. stment nuts on stud bolts and move motor plate in order that the belts can easily slip into the grooves on the pulleys Never pry roll or force the belts over the rim of the pulley b Adjust the motor plate until proper tension is reached For proper tension a deflection of approximately 1 4 per foot of center distance should be obtained by firmly press ing the belt Refer to Figure c Lock the motor plate adjustment nuts in place d Ensure pulleys are properly aligned Refer to Figure 2 Pulley Alignment Pulley alignment is adjusted by loosening the motor pulley setscrew and by moving the motor pulley on the motor shaft Figure 2 indicates where to measure the allowable gap for the drive alignment tolerance All contact points indicated by WXYZ are to have a gap less than 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 carpenters square to adjust the position of the motor pulley until the belt is paral lel to the longer leg of the square Tolerance OFFSET ANGULAR OFFSET ANGULAR Center Distance Up thru 12 12 up through 48 Over 48 z m 7 CENTER x DISTANCE Y CD w Iv Figure 2 Z al Final Installation Steps a Ensure that all accessories are installed 2 b Ensure that the blower is secured to ductwor
16. vere duty are shipped loose and must be field mounted by bolting the motor on the motor mounting plate in the existing mounting slots Wiring Installation A NOTICE All wiring should be in accordance with 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 Refer to the Wiring Diagrams on page 3 Direct drive Wire the electrical box on the blower housing Belt drive The motor can be wired directly since the motor is external to the fan Motor Plate Motor Plate Adjustment Nut Motor Plate Adjustment Wiring Installation continued Leave enough slack in the wiring to allow for motor move ment 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 To remove motor remove bolts securing motor base to power assembly Do not remove motor mounting bolts Belt and Pulley Installation Belt tension is determined by the sound the belts make when the fan is first started Belts will produce a loud squeal which dissipates after the fan is operating at full capacity If the belt tension is too tight or too loose lost effi ciency and possible damage can occur Figure 1 Do not change the pulley pitch diameter to change ten sion This will result in a different fan speed a Loosen motor plate adju
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