1995 Buick Century Owner's Manual - Page 118

MAX: Provides maximum cooling with the least amount of work. This settingrecirculates much of the air insideyour vehicle so it maximizes your air conditioner's performance and fuel economy. HEATER:When outside temperatures are cold, sliding the upper lever to HEATER and the lower lever to HOT will send heated air through the heater ducts, and some through the defroster vents. VENT and HEATER are labeled ECONOMY positions because the air conditioner compressor doesn't run in these two settings. Thisreduces engine load,resulting in improved fuel economy. If either setting fails tokeep you comfortable, or causes your windows to fogup, slide the upper lever to one of the Air Conditioning positions, or to DEF (Defrost). NORM (Normal): Use for normal cooling on hot days. This setting cools outside air and directs it through the instrument panel outlets. BI-LEV (Bi-Level):Use this on cool, but sunny days. This setting brings in the outside air, and directs it in two ways. The cool air is directed to the upper portion of your body through the instrument panel outlets, and warmed air is directed through the heater ducts and defroster vents. At times this temperature difference may be more apparent than others. The airconditioner compressor operates in all Air Conditioning positions, and in DEF (defrost) when the outside temperature is above about 40°F (4.5"C). Defrosting The DEF setting directs most of the airthrough the defroster vents, and some through the heater ducts. Defogging To quickly defog the windshield, set the upper lever to DEF and move the fan switch to HI. Slide thelower lever to HOT. In damp, cool weather (temperatures about 45 "-65"F, 7 - 18 C ) , you can use BI-LEV to defog the side windows. Set the upper lever to BI-LEV and the fan switch to HI. Aim the side vents toward the side windows. For increased air flow to the side vents, close the center vents. O O Ventilation System VENT: For mild outside temperatures, when little heating or cooling is needed, slide the upper lever to VENT. Air flow is through the instrument panel outlets. Rotate the control next to the outlets to turn on, adjust or turn off the air flow. Adjust the lower lever on the control panel to the temperature desired. 3-2