Vaccuum Switching Off From Overheating

[joko]

i have a tesco vacuum. VCBL1411 model

it works fine - great very powerful, but after about 5-10 mins of use it shuts off for a while & wont go back on for about 10 mins or somehting
(timings are a guess)

i know this is safety thing, it happens with hairdryers when the nozzle is too close - i can hear a very faint click when its ready to be turned back on again.
no noticed a click with the vac but not really listened for it.

thing is, the vac is just sitting there, as usual, its not against something, nothing it obstructing the airflow etc - so why is it just over heating?

i have other vac & none of them do this.

so what could be causing this? any ideas?

its old & no warranty etc, but i'm quite handy with electronics - got plenty of tools etc, & have repaired a few other things in the past, laptops, radio etc, so i'm happy to open it up - IF theres any point in me doing it - is there anything inside that could be wrong that i could fix?
or will i just have to wait for it to come on again when its cooled down?
or is this normal?
i try not to have the nozzle flat on the carpet for more than a second or 2 at a time, i keep lifting it to let the air in.

thanks :)

[beso]

chelle7272 // Surely though the air intake is managed by the filters?//

No. The filters are passive. They cannot manage anything.

Hopkirk// a healthy machine would not be overheating. There is a fault of some sort.//

No. It is protecting itself from the misuse. I've seen this before. I had a top of the line Electrolux that a friend borrowed. She said it kept cutting out. I found she had been using the open end of the hose without any nozzle. That was enough to overload it.

The machine continued to work perfectly for at least another decade and never once cut out again, but I never used it without a nozzle.