Mvhr new noises

[Pocster]

Hard to explain . Like a vibration / whoosh and then settles so not constant . Assume fans dying . If I open this up ok to just wd40 the bearings ??

[Pocster]

Apparently bearings are sealed so no wd40 . Will take it apart tomorrow 

[SteamyTea]

WD40 is not really a good lubricant, it is really a water displacer, so used to free up stuff.

These sort of bearings should usually be greased, so a finger of Vaseline, or silicone grease, which I know you have by the bucket load.

[Pocster]

10 minutes ago, SteamyTea said:

WD40 is not really a good lubricant, it is really a water displacer, so used to free up stuff.

These sort of bearings should usually be greased, so a finger of Vaseline, or silicone grease, which I know you have by the bucket load.

They are apparently enclosed I.e not serviceable . It doesn’t actually sound like the bearings failing tbh - but clearly a fan issue 

[saveasteading]

It's a failure. Good bearings work millions of rotations.

 

I was recently marvelling at a roatating flue vent we have. 

Rotates nil to 20 times a second, say 5 average.

 

15 years doing that outdoors in the wind. An mvhr fan is doing a simpler job at constant speed.

[ProDave]

HDD bearings are the one I marvel at.  I know they are only supporting a small mass, but they can run for many many years / decades.  

 

So far my MVHR fan bearings are okay, but I had to replace the bearings on my ASHP fan at about 5 years old, so chances are I will be doing that every 5 years.

[Pocster]

4 minutes ago, saveasteading said:

It's a failure. Good bearings work millions of rotations.

 

I was recently marvelling at a roatating flue vent we have. 

Rotates nil to 20 times a second, say 5 average.

 

15 years doing that outdoors in the wind. An mvhr fan is doing a simpler job at constant speed.

I’m guessing this even though it doesn’t sound like it . Hoping the fan comes out easy ( bet it doesn’t) 

[-rick-]

1 minute ago, Pocster said:

I’m guessing this even though it doesn’t sound like it . Hoping the fan comes out easy ( bet it doesn’t) 

 

If you can find out the type of bearings you need in advance order some before tearing into the unit. You have a bearing puller (or a way to do the replacement)? Minimise downtime/repeat work. If you decide you don't need them now then you have them for when you inevitably will.

[Pocster]

14 minutes ago, -rick- said:

 

If you can find out the type of bearings you need in advance order some before tearing into the unit. You have a bearing puller (or a way to do the replacement)? Minimise downtime/repeat work. If you decide you don't need them now then you have them for when you inevitably will.

My plan was simply replace the entire fan so less (expletive deleted)ing about 

[-rick-]

11 minutes ago, Pocster said:

My plan was simply replace the entire fan so less (expletive deleted)ing about 

 

Ah, I thought you were more DIY about these things, replacement certainly easier assuming you can source it.

[Pocster]

19 minutes ago, -rick- said:

 

Ah, I thought you were more DIY about these things, replacement certainly easier assuming you can source it.

I built the (expletive deleted)ing house so need a break 🤣🤣🤣🤣