Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove the housing. Dishwasher also gets some off.


NT

On 18/10/2016 21:45, wrote:
On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove the housing. Dishwasher also gets some off.


NT


I can remove the stator/frame and the top bearing from the housing but
the fan is very securely press fitted to the rotor shaft and
unfortunately I cannot remove the rotor or the lower bearing without
destroying it

The rotor and fan would probably survive the dishwasher quite happily,
but I don't think the bearing will

On Tuesday, 18 October 2016 22:22:02 UTC+1, Lee wrote:
On 18/10/2016 21:45, tabbypurr wrote:
On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove the housing. Dishwasher also gets some off.

I can remove the stator/frame and the top bearing from the housing but
the fan is very securely press fitted to the rotor shaft and
unfortunately I cannot remove the rotor or the lower bearing without
destroying it

The rotor and fan would probably survive the dishwasher quite happily,
but I don't think the bearing will

I've put whole motors through a dishwaher before now as a last resort. They survived, but it's a small sample set. I expect wrapping the motor well in plastic would help. Maybe holding the fan over a kettle would soften enough, I don't know.


NT

wrote in message
...
On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove the
housing.

Dishwasher also gets some off.

Gets it all off with my kitchen exhaust fan, but very
alkaline so not good for if the fan is aluminium.

wrote in message
...
On Tuesday, 18 October 2016 22:22:02 UTC+1, Lee wrote:
On 18/10/2016 21:45, tabbypurr wrote:
On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the
grill
element.
In terms of construction it resembles a boiler fan, not surprisingly
it
is absolutely caked in burnt on grease. The bearings were free, but
the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably
priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove
the housing. Dishwasher also gets some off.

I can remove the stator/frame and the top bearing from the housing but
the fan is very securely press fitted to the rotor shaft and
unfortunately I cannot remove the rotor or the lower bearing without
destroying it

The rotor and fan would probably survive the dishwasher quite happily,
but I don't think the bearing will

I've put whole motors through a dishwaher before now as a last resort.
They survived, but it's a small sample set. I expect wrapping the motor
well in plastic would help. Maybe holding the fan over a kettle would
soften enough, I don't know.

Surely using what is used to clean ovens would be safer.

On Tuesday, 18 October 2016 23:35:53 UTC+1, Rod Speed wrote:
tabbypurr wrote in message
...
On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove the
housing.

Dishwasher also gets some off.

Gets it all off with my kitchen exhaust fan, but very
alkaline so not good for if the fan is aluminium.

ali pans are fine in a dishwasher.

Surely using what is used to clean ovens would be safer.

That's caustic soda, it's a no-no for ali.


NT

wrote in message
...
On Tuesday, 18 October 2016 23:35:53 UTC+1, Rod Speed wrote:
tabbypurr wrote in message
...
On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:

Have an electric fan oven which has an vent fan mounted above the
grill
element.
In terms of construction it resembles a boiler fan, not surprisingly
it
is absolutely caked in burnt on grease. The bearings were free, but
the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably
priced,
so it's not worth too much effort

Boiling softens the crap so it can be scraped off, if you can remove
the
housing.

Dishwasher also gets some off.

Gets it all off with my kitchen exhaust fan, but very
alkaline so not good for if the fan is aluminium.

ali pans are fine in a dishwasher.

Wrong with the anodised stuff.

Surely using what is used to clean ovens would be safer.

That's caustic soda,

Plenty of it isnt.

it's a no-no for ali.

On Tue, 18 Oct 2016 19:47:25 +0100, Lee wrote:

Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

Ammonia will etch the aluminium.

Perhaps a aluminium wheel cleaner, for alloy rims on automobiles?

Most alloy wheels are alloy with a coat of paint, powdercoat, or whatever, but
I'd expect a cleaner to not attack unprotected aluminium -- as it would be in
scratched rim. Still, I wouldn't leave it on for long without testing it for a
short period first...

Thomas Prufer

On 18/10/2016 23:25, wrote:
On Tuesday, 18 October 2016 22:22:02 UTC+1, Lee wrote:
On 18/10/2016 21:45, tabbypurr wrote:

snip

The rotor and fan would probably survive the dishwasher quite happily,
but I don't think the bearing will

I've put whole motors through a dishwaher before now as a last resort. They survived, but it's a small sample set. I expect wrapping the motor well in plastic would help. Maybe holding the fan over a kettle would soften enough, I don't know.


NT


I forgot we have a steam cleaner...

I've had to put it back together for now - women and ovens, eh
It's working nicely at the moment. Took nearly five years to get bad
enough to be rattling, I guessing it won't take any where near as long
for it to do it again...

I'll probably just replace it next time, but I will remember to chuck it
in the dishwasher. Even if it's just for educational purposes

On Tuesday, 18 October 2016 19:47:28 UTC+1, Lee wrote:
Have an electric fan oven which has an vent fan mounted above the grill
element.
In terms of construction it resembles a boiler fan, not surprisingly it
is absolutely caked in burnt on grease. The bearings were free, but the
fan blades were catching on the residue.
I've managed to clean it enough that it rotates freely but I'd like to
clean it more thoroughly.
Problem is that it's an alloy housing, would leaving it in a bag with
some ammonia solution be a Bad Thing? I guess Caustic is out for the
same reason.

If it comes to it, a replacement fan is surprisingly reasonably priced,
so it's not worth too much effort

White spirit?

"Lee" wrote in message
...
On 18/10/2016 23:25, wrote:
On Tuesday, 18 October 2016 22:22:02 UTC+1, Lee wrote:
On 18/10/2016 21:45, tabbypurr wrote:

snip

The rotor and fan would probably survive the dishwasher quite happily,
but I don't think the bearing will

I've put whole motors through a dishwaher before now as a last resort.
They survived, but it's a small sample set. I expect wrapping the motor
well in plastic would help. Maybe holding the fan over a kettle would
soften enough, I don't know.


NT


I forgot we have a steam cleaner...

I've had to put it back together for now - women and ovens, eh
It's working nicely at the moment. Took nearly five years to get bad
enough to be rattling, I guessing it won't take any where near as long for
it to do it again...

I'll probably just replace it next time, but I will remember to chuck it
in the dishwasher. Even if it's just for educational purposes

That isnt a politically correct way to talk about the
wife and she is unlikely to fit in the dishwasher.

That isnt a politically correct way to talk about the
wife and she is unlikely to fit in the dishwasher.

Well that's true