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 🤣🤣🤣🤣

[Pocster]

Opened it up and this bit fell out ! This the summer bypass thingy ? Struggling to get it back in 

[Pocster]

Ok I’m confused . Powering it on causes a whirling noise presumably for this arm . But I can’t get the arm in and close the flap 

[-rick-]

Hopefully you spotted it but it doesnt look like the hinge at the bottom left is in correctly. From the earlier photo it looks like that end has to clip in first then the other end will snap in place?

 

Other than that observation I can't help you. Do you have a service manual? If not, find one?

[Pocster]

I can get the bottom clips in that’s okay . But as that arm goes in the slot- it gets stopped before I can get the panel closed - like it’s hitting something 

[Pocster]

Found manual online . Vent axia kinetic advance sx . Doesn’t even show this internal panel and arm 

[Pocster]

Even taking the arm off the panel it won’t go in 🙄 

[Pocster]

lol ! Nearly shit myself . Decided to turn it on whilst holding the arm in the slot soots. It took the (expletive deleted)er !

if I just permanently turn off summer bypass then I need not care ? ( obviously at the moment can’t get arm to fix to panel )

[Pocster]

It was like one of these !

[Pocster]

Can I find replacement fans …. 🙄
maybe … but how (expletive deleted)ing much !!!

Edited 19 hours ago by Pocster

[-rick-]

1 hour ago, Pocster said:

lol ! Nearly shit myself . Decided to turn it on whilst holding the arm in the slot soots. It took the (expletive deleted)er !

if I just permanently turn off summer bypass then I need not care ? ( obviously at the moment can’t get arm to fix to panel )

 

Turn it on put it in bypass and let it stick its tongue out for you to inspect. Then reassemble and let it revert to normal mode?

 

1 hour ago, Pocster said:

Can I find replacement fans …. 🙄
maybe … but how (expletive deleted)ing much !!!

 

Time to order some bearings then? 🙃