Patent ID: 7514892

Claim:
A method of starting a motor ( 19 ), the method comprising the steps of: 1. connecting a power source ( 18 ) to input terminals of an electronic unit ( 21 ) controlling the motor ( 19 ), thereby supplying a current ( 23 ) to the electronic unit ( 21 ) from the power source ( 18 ), the electronic unit ( 21 ) ensuring that the supplied current ( 23 ) does not exceed a predefined maximum current level, I max , 2. at least substantially continuously measuring a rotational speed, (ω motor , of the motor ( 19 ), and comparing ω motor to a predefined minimum rotational speed, ω min , 3. in the case that ω motor is smaller than ω min after a predefined time interval has lapsed, stopping the motor ( 19 ), 4. changing the predefined maximum current level, I max , to be supplied from the power source ( 18 ) to the electronic unit ( 21 ), and 5. repeating steps 1-4 until it is obtained that ω motor ≧ω min .