. OPERATION EXPLANATION OF COMPONENTS when 3 - 86 FAN SWITC Use t his switch (2) to adjust the air flow from the fan. The a ir flow ca n be adjusted to 4 levels When this switch (A) is switch (B) i s pressed, the air flo w decreases. The s etting for the air flow is displayed on the display monitor. A: Monitor B: Air flow a: Air flow "Lo" b: Air flow "M1" c: Air flow " M2" d: Air flow