Aerovent IM-166, Installation, Operation & Maintenance Manual

Page 1: ...t www aerovent com REVIEW AMCA PUBLICATION 410 PRIOR TO INSTALLATION Table of Contents Fan Arrangements 2 Exploded View 2 Impeller Nomenclature 3 Impeller Rotation 3 Safety Hazard Warnings 4 Shipping Receiving 4 Handling 5 Unit Storage 6 Foundations and Supporting Structures 7 8 Fan Installation Factory Assembled Units 9 Bearing Installation 10 Safety Bearing Lubrication Instructions 11 Drive Moun...

Page 2: ...ement 3 Belt Driven Arrangement 4 Direct Drive Exploded View Arrangement 9 Belt Driven Inlet Funnel Sheave Pulley Impeller Bearing Housing With End Cover Plate Belt Tube Straightening Vanes Discharge Cone Belt Tube Seal Removable Housing Motor Mount Bearings Shaft Motor Belt ...

Page 3: ...lation Operation Maintenance Manual IM 166 3 Impeller Cone End Ring Shroud Front Plate Back Plate Blade Impeller Nomenclature AIRFLOW Impeller Rotation CLOCKWISE CW example shown Rotation View From Drive Side ...

Page 4: ...ve clothing eye protection ear protection respiratory equipment hand and foot protection when installing or servicing the fan Always use caution when entering a fan s air path High velocity airflow can cause you to lose your balance Motor bearings and drives can be hot and similarly if the fan is subject to processes that are hot the fan housing could be hot Fans are often used to move hazardous m...

Page 5: ...f the impeller as this may distort the impeller Take care not to damage the shaft where the impeller or bearings will be mounted Never lift or support the assembly by the impeller Always support the assembly by the shaft when lifting or storing see the section regarding proper storage of equipment Do not support the shaft or the impeller on the housing sides See the Fan Installation section for ad...

Page 6: ... is to be stored for a prolonged period The drives should be labeled for service and stored in a dry place Belts should be removed coiled without kinks placed in a heavy carton and stored in a dry well ventilated place To prevent belt deterioration storage conditions should not exceed 85 F and 70 humidity If belts show signs of deterioration they should be replaced prior to startup Motors should b...

Page 7: ...r strength is not sufficient to ensure operation at low vibration levels Supports for suspended fans must be cross braced to prevent side sway Structural resonance should be at least 20 from fan operating speed Vibration isolators may help block the transmission of vibration into a structure Any ducting should have independent support do not use the fan to support ducting Flexible connections are ...

Page 8: ...o threaded rod to provide clearance 3 Hanger rods nuts and washers supplied by customer Typical Vertical Mounting with Vibration Hangers 1 2 6 3 4 5 7 ITEM QTY DESCRIPTION 01 1 Fan 02 4 Anchor Bolt 03 8 Hex Nut 04 8 Washer NOTE 1 Anchor bolts and hardware supplied by customer 1 2 3 4 Typical Horizontal Mounting to Rigid Foundation ITEM QTY DESCRIPTION 01 1 Fan 02 See Note Lag Bolt 03 1 Stack Cap O...

Page 9: ...remature failure 5 Check the alignment of the bearings Shim or reposition the bearings if necessary 6 Check alignment of sheaves on belt driven fans 7 Check tension of belts to see if it is sufficient Sheaves on belt driven fans are often provided with taper lock bushings When tightening bushing bolts proceed in a progressive manner to avoid cocking the tapered surfaces between the bushing and the...

Page 10: ...al 4 Unless the user orders differently bearings are lubricated in the factory with a lithium complex NLGI grade 2 grease Refer to the bearing lubrication schedule on the next page Spherical Roller Bearings with Split Pillow Block Housings 1 The bearings should be disassembled taking care not to interchange parts between bearings Tops of housings are not interchangeable with the bottom half pillow...

Page 11: ... the general assembly drawing supersede requirements found here Fans with Ball Bearings Relubrication Schedule Weeks Ball Bearing Pillow Blocks Shaft DIA Speed RPM 500 1000 1500 2000 2500 3000 3500 4000 4500 1 2 thru 111 16 13 45 6 6 5 3 3 2 2 2 1 115 16 thru 27 16 50 60 6 5 4 2 2 1 1 1 1 211 16 thru 215 16 65 75 5 4 3 2 1 1 1 37 16 thru 315 16 90 100 4 3 2 1 1 Suggested lubrication interval under...

Page 12: ...e runout or a bent shaft Unless there is a bent shaft runout can be corrected by adjustments to the bolt torque of the taper bushing 3 Install and tighten the belts Run the drive for a few minutes to seat the belts When fitting the belts adjust the motor position to fit on the belts Do not use a pry bar as this may damage the belt cords Tighten the belts to the proper tension Ideal tension is just...

Page 13: ...y of the fan Periodic inspections lubrication and observations of sound and vibration will help prolong the life of the fan If changes are noted check bolt tightness foundation integrity cleanliness of the impeller and or motor bearing lubrication and drive components Always keep records of the maintenance that is performed Motor Maintenance The three basic rules of motor maintenance are 1 Keep th...

Page 14: ...he grease expelled from unit ball or roller bearings at the time of relubrication is the best guide as to whether regreasing intervals and amount of grease added should be altered Spherical roller bearings with split pillow block housings should not be lubricated until grease purges or overheating may result Follow the lubrication interval and amount noted in the Bearing Installation section Spher...

Page 15: ... foundation Duct Connections refer to safety section The fan support structure is normally not designed to carry loads imposed by the weight of ducts silencers stacks etc Supporting these loads on the fan can cause housing distortion and may cause performance or vibration problems Use of flexible connections is recommended for all fans and imperative when using vibration isolation or handling high...

Page 16: ...0 330 365 402 445 490 542 600 660 730 A 12 25 15 00 16 50 18 25 20 00 22 25 24 50 27 00 30 00 33 00 36 50 40 25 44 50 49 00 54 25 60 00 66 00 73 00 80 75 89 00 B 0 31 0 38 0 44 0 56 0 63 0 69 0 75 0 88 0 97 1 06 0 94 1 03 1 13 1 25 1 38 1 56 1 69 1 88 2 09 2 28 C 4 20 5 13 5 64 6 19 6 75 7 56 8 31 9 13 10 19 11 19 12 38 13 63 15 13 16 63 18 38 20 25 22 31 24 63 27 25 30 00 Model AMX ...

Page 17: ...heck belt or coupling 2 Poor foundation or mounting structure resonances 3 Foreign material attached to rotating components 4 Damaged rotating components bearings shaft fan impeller sheaves 5 Broken loose or missing set screws 6 Loose bolts 7 Vibration transmitted by another source 8 Water accumulating in airfoil blades 9 Fan is operating in stall or unstable flow region Motor Problems 1 Incorrect...

Page 18: ...olts tight Check to see if the fan is distorted by the foundation and or ductwork Note Applies to direct or isolation mount Check fan interior for debris and standing water Fan Impeller Impeller clearance checked Impeller overlap checked Fasteners tight Impeller rotates freely Springs if equipped Springs adjusted properly Flex joints allow movement Electrical conduit allows movement Bearings Beari...

Page 19: ...Installation Operation Maintenance Manual IM 166 19 Date Completed Maintenance Performed By Comments Model Number__________________________ Serial Number __________________________ Fan Maintenance Log ...

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