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Re: fan blades rub on housing
The fan is not level.
You will have to relevel the fan. One "trick" we use until a fan can be releveled is to stick a wieght on the top side of the blade. You will have to find which blade will weight back to level. Usually the one on the oposite side of the one that rubs. Tape some quarters or fishing weights on the top side and keep adding until it quits.
Once you get a chance to relevel it get yourself a foot long level and loosen the connections and redo the mountings.
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You are in position to visualise the fault as the blades are turned so that the nosie is seen . It can be from rubbing of the fan leaf, slipping of the blades from the shaft, or a possible vibration.
remove the power and turn manually to hear the noise to correct.
Could be a simple alignment issue or the flywheel holding the fan blades to the fan could be going bad, i.e. dried out and crumbling.
The only way to check for sure is to get up to the blades and look to see the condition of the flywheel, a hard black rubber part and perhaps check the alignment of the fan itself.
Problem 1. Fan will not start. Probable Cause 1. Fuse or circuit breaker blown. 2. Loose power line connections to the fan, or loose wire connections in the switch housing. 3. Reversing switch in neutral position.
Suggested Remedy 1. Check main and branch circuit fuses or circuit breakers. 2. Check line wire connections to fan and switch wire connections in the switch housing. 3. Make sure reversing switch position is all the way to one side.
WARNING: Make sure main power is turned off.
Problem 2. Fan sounds noisy. Probable Cause 1. Blades not attached to fan. 2. Loose screws in motor housing. 3. Screws securing fan blade flanges to motor hub are loose. 4. Switch housing binding against the blade hub. 5. Wire connectors inside switch housing rattling. 6. Screws holding blades to flanges are loose.
Suggested Remedy 1. Attach blades to fan before operating. 2. Check to make sure all screws in motor housing are snug (not over-tight). 3. Check to make sure the screws which attach the fan flanges to the motor hub are tight. 4. Check to make sure that the switch housing does not bind against the blade hub. 5. Check to make sure wire connectors in switch housing are not rattling against each other or against the interior wall of the witch housing. 6. Tighten screws securely.
WARNING: Make sure main power is turned off.
Problem 3. Fan wobbles Probable Cause 1. Setscrew in motor coupling is loose. 2. Setscrew in the hanger ball/downrod assembly is loose. 3. Screws securing fan blade flanges to motor hub are loose. 4. Fan blade flanges not seated properly. 5. Hanger bracket and/or outlet box is not securely fastened. 6. Fan blades could be out of balance.
Suggested Remedy 1. Tighten the setscrew in the motor coupling. 2. Tighten the setscrew in the hanger ball/downrod assembly. 3. Check to be sure screws which attach the fan blade to motor hub are tight. 4. Check to be sure the fan blade flanges seat firmly and uniformly to the surface of the motor hub. If flanges are seated incorrectly, loosen the flange screws and retighten. 5. Tighten the hanger bracket screws to the outlet box, and/or secure outlet box. 6. Interchanging an adjacent (side-by-side) blade pair can redistribute the weight and result in smoother operation.
WARNING: FOR YOUR OWN SAFETY TURN OFF POWER AT FUSE BOX OR CIRCUIT BREAKER BEFORE TROUBLESHOOTING YOUR FAN!!!
I need a fan chain pull switch for my Hampton Bay 5 Blade Model 552 od-- SKU # 409-952---- MFG # 5A00007 SER # 720275940415653B The switch controls High,Medium,Low Speed and Off. 4 Wires--Black,Brown Purple and Gray are connected to awitch, they come from a Block Capacitor (4.5mf,6mf and 5mf) This fan was purchased around 1995 and is in good condition but needs this replacement switch--- Where can I get the replacement for this model?
I wrote to a person earlier about oiling one, now Im thinking she may be having the same problem you have, I will paste that info at the bottom, but sounds like your fan blade assembly has come loose and/or worked its way back down to the motor, study the fan blade assembly and look for an allen bolt or ring holding the assembly to the shaft, remove the ring or loosen the allen bolt , adjust the fan blade assembly so it doesent bind, oil the motor with regular 10w40 motor oil and dust the fan, these are good little fans and that company has been making those since the40's, also sending user guide link. http://www.vornado.com/manuals/allcirc.pdf
In my case noise was coming from the plastic blade rubbing against the sheet metal housing. I removed the motor and added 2 washers to the mounting screws. The washers acted as spacers and lifted up the motor/blade assembly with respect to the sheet metal housing. The blade no longer rubbed against the housing and the noise stopped.
on the inner part of the motor [fan side] look for an external snap ring and a fiber spacer. the armature fits all the way into the rear part of the housing, the other housing goes over the motor shaft and must press against the snap ring and fiber washer.