HomeIndustries Use Cases PricingResources Book a TourLog In to MaintainXIndustries Use Cases PricingResources Book a TourLog In to MaintainX Back General • MaintenanceAERO® Semi-Custom Central Station Air Handler 39M: Fan Shaft Bearing RemovalThe procedures here focus on the general maintenance of your equipment, inspection and fan shaft bearing removal.MaintainX10/24/2021AERO® Semi-Custom Central Station Air Handler 39M: Fan Shaft Bearing Removal1 stepsThe procedures here focus on the general maintenance of your equipment, inspection and fan shaft bearing removal.Fan Shaft Bearing RemovalIsolate the unit from the system by closing dampers to prevent “pin wheeling.” Tie off the fan wheel to prevent rotation.Lock open and tag electrical disconnect.Enter through fan section access door or remove panels as required.Loosen motor base to frame bolts. Adjust motor to release belt tension and remove belts. Do not stretch belts over sheaves. Damage to belts can result.Remove bolts on bushing of fan shaft sheave, insert bolts in jacking hole provided on bushing and slowly jack bushing from sheave. Remove bushing and sheave.Loosen bearing holddown bolts, block shaft up.Loosen bearing setscrews and locking collar, and remove holddown bolts.NOTE: To facilitate easy removal of setscrew fastened wheels, sheaves, or bearings, remove the setscrew completely. Taking care not to damage threads, insert a flat ended drift or punch, tap lightly and carefully return the material displaced on the shaft by the setscrew to its original place.Remove bearing while observing the following precautions: a. Make certain fan shaft surface is not rough or scored. If so, clean up surface with fine emery cloth. d. Add a few drops of oil after cleanup of shaft end.! CAUTION: It should not be necessary to drive a new bearing onto shaft. If light tapping is needed, do not tap against outer race. Equipment damage may result.Check fan shaft diameter at bearing mount. If worn by more than 0.001 in. below nominal, shaft should be replaced.Install new bearing, tighten holddown bolts, and then tighten bearing locking collar or setscrews.Make certain fan wheel does not rub sides of fan housing after installing new bearings.Recoat fan shaft with a rust inhibitor or grease.Replace sheave and belts. Adjust and align as described in Installation, Sheaves and V-Belts sections.Replace access panels.Restore electrical power.Source: Carrier (www.shareddocs.com)
Back General • MaintenanceAERO® Semi-Custom Central Station Air Handler 39M: Fan Shaft Bearing RemovalThe procedures here focus on the general maintenance of your equipment, inspection and fan shaft bearing removal.MaintainX10/24/2021AERO® Semi-Custom Central Station Air Handler 39M: Fan Shaft Bearing Removal1 stepsThe procedures here focus on the general maintenance of your equipment, inspection and fan shaft bearing removal.Fan Shaft Bearing RemovalIsolate the unit from the system by closing dampers to prevent “pin wheeling.” Tie off the fan wheel to prevent rotation.Lock open and tag electrical disconnect.Enter through fan section access door or remove panels as required.Loosen motor base to frame bolts. Adjust motor to release belt tension and remove belts. Do not stretch belts over sheaves. Damage to belts can result.Remove bolts on bushing of fan shaft sheave, insert bolts in jacking hole provided on bushing and slowly jack bushing from sheave. Remove bushing and sheave.Loosen bearing holddown bolts, block shaft up.Loosen bearing setscrews and locking collar, and remove holddown bolts.NOTE: To facilitate easy removal of setscrew fastened wheels, sheaves, or bearings, remove the setscrew completely. Taking care not to damage threads, insert a flat ended drift or punch, tap lightly and carefully return the material displaced on the shaft by the setscrew to its original place.Remove bearing while observing the following precautions: a. Make certain fan shaft surface is not rough or scored. If so, clean up surface with fine emery cloth. d. Add a few drops of oil after cleanup of shaft end.! CAUTION: It should not be necessary to drive a new bearing onto shaft. If light tapping is needed, do not tap against outer race. Equipment damage may result.Check fan shaft diameter at bearing mount. If worn by more than 0.001 in. below nominal, shaft should be replaced.Install new bearing, tighten holddown bolts, and then tighten bearing locking collar or setscrews.Make certain fan wheel does not rub sides of fan housing after installing new bearings.Recoat fan shaft with a rust inhibitor or grease.Replace sheave and belts. Adjust and align as described in Installation, Sheaves and V-Belts sections.Replace access panels.Restore electrical power.Source: Carrier (www.shareddocs.com)