dc07 keeps cutting out?

It's sucking too hard - the carpet makes too good a seal with the cleaning head - no air is getting in (not enough air) the motor is racing away off-load (not labouring).

No air = no cooling for the motor - if the machine turns itself off it will be the thermal cut-out safety switch inside.

You should (ideally) be able to adjust the cleaning head to overcome the "gripping" problem.

Good luck...

Peccavi
August 2010