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Re: Blomberg 1501 AAA grinding noise
I got an engineer in to take a look at the machine.The bearings were ok, also drum support spider. But the drum was slightly distorted with slight dents visible so he concluded that it had hit a foreign object on fast spin (1500 rpm)but what it was is a mystery but is trapped somewhere behind the drum – hence grinding noise. But the bottom line is that it is not worth fixing (unless anyone has a spare inner drum)which is a shame as the basic engineering is very solid and ok even though 11 years old. So following his recommendation I will now look at getting a Bosch replacement(german made).
Re: Blomberg 1501 AAA grinding noise
I am reluctant to give up on this machine so I will get hold of an engineer to get a hands on opinion and also likely cost of a repair. Trouble is there are plenty of bargains out there for new machines so can see that I might end up going down that route. Any good british made ones to be considered? Oh I forgot we dont make anything anymore.
Sorry but I can’t see how the knob can ever be a problem on this model? It is clipped directly on to the valve spindle and unless physically damaged just translates the user push & rotation to the valve body (ok in this instance it also pushes against the paddle that operates the internal ignition button). Maybe the knob issue you refer to is with some other model?
PS On the SMEG website it is noticeable that replacement thermocouples have sprouted an extra earth lead.
Just thought you might like to know it is all back together now, and would you believe it everything works perfectly! I guess some grot was the cause, and just cleaning back to bright metal around the thermocouple seat in the casting probably did the trick – or maybe it was just wiggling the wires!
When I said “valve shut-off device” I meant the solenoid at the rear of the valve which is probably remaining shut because it is not getting the go-ahead signal from the thermocouple (or it is jammed which seems unlikely).
Anyway sorry you can’t help further. I’ll put it all back together now!
No the knob is ok – I am a bit further on as I have now removed the top as I originally thought it was probably a loose or faulty connection but there is nothing obvious. However I did notice a review here in UKWhitegoods of the model after mine with the interesting comment “since Smeg modified the thermocouples on these appliances a year or so ago they give little trouble at all. If you have had problems with this call your Smeg agent as there is a cure for any issues with this problem.” So a faulty thermocouple does look likely, and it sounds like they were a known source of trouble at that time.
I suppose the valve shut off device is less likely?Re: spin dryer rubber bushes?
When I followed up the mounts via the website, and also from the OEM they confirmed they were obsolete. A local repair company had one and thought they might be able to get another three – at £3.99 each! However in the meantime my wife picked up a second-hand Bendix – like new – for only £10 so sadly the old one will now have to go for scrap and the Chinese will probably then turn it into the latest bargain from Aldi!
Re: spin dryer rubber bushes?
I was afraid you would ask that! It is an old Morphy Richards and I wouldn’t bother except I can see it is just the bushes – everything else looks as though it will go on for ever! Anyway I think I have identified what looks like the identical component described as a Rolls/Colston spin mount kit MTS 10 for £8.64 so just checking this out and it looks promising. Only snag is it might not be in stock so anybody know of an off the shelf source?
Re: Belling XOU 252 SF “dead”?
Yes that was all the problem was – she may have accidentally pressed a button – anyway all is well, and that has saved me an 80 mile round trip! Thanks for such a speedy response!
Re: Baumatic BT904 ss double oven not getting up to heat
Hi Bryan & Dave,
Hope you both enjoyed Christmas!
Well I removed the motor/fan as I said, and cleaned everything up, lubricated bearings etc (no radial play – only some axial float so seemed fine). However I can’t say that I can tell much difference (except it sounds a bit quieter due to oil) and the fan motor seems free running and happy.
Turkey was cooked fine in fact the oven works well enough as long as we crank up the thermostat to 15 – 20 degrees above where we want it and it does get there eventually (confirmed by the little seperate oven thermometer).
So to recap we have an oven where everything works, but not quite enough heat is being delivered. Doesn’t this lead to the conclusion that the thermostat must be root of the problem? I don’t know if they can be re-calibrated, but I suspect it would not be worth the messing about and better to just replace it. What do you reckon folks?
I suspect I will also be encouraged to look at possible new ovens especially with the sales being on!
Cheers,
Alan
Re: Baumatic BT904 ss double oven not getting up to heat
Very interesting! Did you have to replace the motor?
Well the grill element has four loops but is a single element. It works OK on the grill setting, and remains cold on the fan oven setting. It had occurred to me early on that it might be used to boost heat input (see my earlier correspondence) but I also asked that question directly to Baumatic and they said no.
So tomorrow I will have a good look at the furry cooling fan/motor, clean ’em up, lubricate if possible and see what happens. The motor will be several years old now so if suspect I would be happy to replace it (through UKW of course). Maybe with luck I’m on the home straight now – I’ll report back.
Alan
Re: Baumatic BT904 ss double oven not getting up to heat
Hi Bryan,
Well the oven fan seems to be batting round ok as far as I can tell, and it seems free running enough but I don’t have any means of checking it. The cooling fan on the motor side did look a bit furred up and if I had fixed things I would give it a good clean. If the motor was running slow then I presume the fan oven element would get a bit too hot and there might be a thermal overload device to then cut the power. If there is then that might be a possibility. Is there any known history of these motors going wonky?
No it is not related to fitting the new element: that was last January and this problem has come on slowly over the past month.
Grateful for any comments/advice as I feel I am shortly going to be seperated from around £400+ Not too welcome at this time of the year!
Cheers,
Alan
Re: Baumatic BT904 ss double oven not getting up to heat
Seals and door fit are fine – no leaks.
Just out of interest I called Baumatic UK to make a “technical enquiry” in the hope that as they would be intimately familiar with their own products they might know straight away of any model faults. Nope, complete mystery to them!
A new thermostat control would apparently cost around £50 – bit steep but not unexpected. I think that must surely be the culprit but it is beginning to not make economic sense – and Christmas looms.
So I guess its time to go shopping……
Cheers Dave and thanks for perservering,
Alan
Re: Baumatic BT904 ss double oven not getting up to heat
Have now checked the main oven grill element and it works fine. But remains cool when the main oven (circular)element is on – so much for that theory! Trouble is I am not sure where to go from here.
The circular element was fitted early this year, so nearly new and has been working fine. I presume if it is delivering heat it must be 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} ok
I assume the thermostatic probes also either work – or don’t so are probably nothing to do with the situation.
The control selectors seem ok. There doesn’t seem a lot of protection for the internal contacts but they all seem to be working fine.
What about the thermostat control? Do these get sluggish over time with the heat/fumes? Could it be that it is just not calling up enough heat?Might it be worth getting a new one to try?
As I said before this is very frustrating as everything seems to be working – but it still ain’t cooking right!
Re: Baumatic BT904 ss double oven not getting up to heat
I have now removed the back lower panel but have stopped short of taking the base metalwork off (ie folded sheet metal attched to underside of oven floor to create a rigid base support and a one inch gap where insulation is located) as I can see into the gap from the rear. There is insulation – but no heating element.
I have the booklet “Baumatic – operating and installation instructions for double ovens” and this has six alternative wiring diagrams in the back. I reckon mine is the “4+Ov + 4+Os” whatever all that means. This shows
1=top res
3=circular res
4=half oven top res
5=half oven bottom res
But there is no 2=bottom res on this model. If there was I assume I should see the connectors at the back similar to those for 5? The only other model of the six which does not show a no2 res is the 4+Ov+grillRE.
A further puzzle: in the back of the booklet it only lists
Main oven fan element 2.3kW
Main oven grill element 2.0kW
Total rated load 4.3 kW
However for the top oven it lists upper 0.9kW/lower 1.3kW/and grill 2.0kW elements.Does the grill element in the top of the main oven also contribute to the heat generated? On the wiring diagram I think I can see that one switching option is 1&3 running in series. If that is so and the grill has failed (and unfortunately I haven’t checked that yet) half the heat input would be lost – which would seem about right. I would appreciate your thoughts!
Alan
