Вот, что мне ответил Steinel по 1910Е и 2010Е по скорости вентилятора:
thanks for your E-Mail.
HL 1910 E and HL 2010 E have one cold step ( only 50 ° C ) and two heating steps ( 600 ° C , 630 ° C ) !
When you switch from step 1 to step 2 the motor speed is nearly the same but when you set the
temperature on 600° C or 630 ° C the airflow will go on 300 l / min. And in step 3 it is the same.
by 600 ° C or 630 ° C you will have the maximum on airflow 500 l/min.
Best regards