Noise coming from fireplace insert blower
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MAD MARK
Feeling the Heat
Sounds as though the bearings are already going bad
Or the fan has shifted on the rod and is grinding slightly on the housing/screwset
Or the fan has shifted on the rod and is grinding slightly on the housing/screwset
Can you pull the blower out easily and take a look at it? It sounds like you'll be replacing it, but maybe you will get lucky and can lube it. Its probably a squirrel cage, which I've never tried to lube, but if it is a fan on a shift I've been able to lube the bearings successfully.
![[Hearth.com] Noise coming from fireplace insert blower](https://www.hearth.com/talk/data/attachments/291/291595-0e6f2106fc51c0da8fd9348bb1a5e7ff.jpg?hash=zsmOwAHLCN "[Hearth.com] Noise coming from fireplace insert blower")
What lube do you suggest? I called the manufacturer and they said it's all sealed so there would be no point in lubing it.
I've had luck bringing 60s electric heaters/fans back with general lubricants. If there's oiling points, Mobil 1 will work its way down. If not, I've used 3 in 1, liquid graphite sprays, kroil, etc.
Since it's a fan, there's cooling around it that something like a door hinge or latch mechanism doesn't have. I'd try a 3 in 1 just to see if it works. If it does, maybe it'll work for a year and just become a spring maintenance deal. If not, we need to figure what would wick down and last a bit longer. I'd try kroil or something like that. I'm not sure how well it'd work with the heat, but it's a great penetrating oil.
Since it's a fan, there's cooling around it that something like a door hinge or latch mechanism doesn't have. I'd try a 3 in 1 just to see if it works. If it does, maybe it'll work for a year and just become a spring maintenance deal. If not, we need to figure what would wick down and last a bit longer. I'd try kroil or something like that. I'm not sure how well it'd work with the heat, but it's a great penetrating oil.
Remove the squirrel cage by loosening the locking set screw on the motor shaft.
Use 3 in 1 to lubricate. I wouldn't use kroil.
Video link has expired.
Use 3 in 1 to lubricate. I wouldn't use kroil.
Video link has expired.
MAD MARK
Feeling the Heat
MAD MARK
Feeling the Heat
Deciphering random noise over the internet is hard. Sounds like bearings to me. I just replaced a set in my NC30 fan setup. Was $12.
I would take the fans off and run it again and see if noise persists. If so, you have narrowed it down to bearings or bad motor.
I would take the fans off and run it again and see if noise persists. If so, you have narrowed it down to bearings or bad motor.
Thanks for the advance. Tried taking the bolt out of the fan, going to be a task lol
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