Sharper Image SI867 - Manual (Page 10)

Normal operation at all power
levels involves a programmed
cycle of air movement.
To override the power control
setting and let the unit run at
maximum power for five minutes,
press BOOST.
Your previously selected power level
resumes after the five minutes has elapsed.
Note: When the unit is on, the negative-ion
feature is always on.
Boost
Mode Control
Setup and Operation
10