The only electronics (on a face plate) attached to the motor are a ST electronics BTB16 600BW chip (used for phase control in motor speed controllers) and an unidentified cylindrical component marked only as "43-02 97C".
Just curious whether the failure of either of these could be causing the motor failure symptoms in the subject line,
At about the time of 10/2/2008 1:20 AM, Graz stated the following:
That 43-02 sounds like a motor running capacitor...43uf maybe? The 97C means that it will function correctly up to 97 degrees Celsius. A failure of the cap will cause problems. The chip mentioned is not a IC per say, but it's a triac.
It sounds like the motor is a standard induction motor with a 90 degree phase controlled startup winding.
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OK, thanks. I will try to measure the ESR on it. What sort of problems could failure cause?
Apparently it's also brushless. And not amenable to dissasembly.
It starts fine, just sparks quite a bit, is noisy, and there's an electrical burning smell (from the sparks, presumably)
The cap checks out OK. It won't cost me much to replace the triac so it's worth a shot. I can get hold of a BTA16-600BW (locally) easily enough, but the BTB16-600BW will be more difficult. According to the data sheet, the only difference between them is that the "A" is insulated and the "B" is not, so I imagine I could use the "A"?
It just seemed odd to me that the actual motor on a vacuum cleaner less than 6 years old would pack up. Especially one made by Miele, which prides itself on the quality of its products.
Thanks for that, bookmarked. All your help much appreciated.
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