26User’s ManualMARINE USEMany U-Line models are designed to operate in a harsh marineenvironment. Special considerations include the following:• For best performance, keep the unit out of direct sunlight.• On Ice Maker models, turn the unit OFF and dispose of any ice cubesif the unit will not be used for 5 days or more. Prop door open toallow for air circulation and prevent mold and mildew. Do not use anti-freeze in your icemaker.• If the ambient temperature is expected to drop below 45°F, drain allwater from the unit to prevent freezing damage not covered by thewarranty.• High ambient temperatures (110°F or higher) may reduce the unit’sability to reach low temperatures and may also reduce the ice pro-duction rate.ADJUSTING THE TEMPERATURECONTROLModels BI-95 and BI-98: Use a flat tip screwdriver to turn adjustingscrew, located behind front grille, clockwise for colder (slower ice pro-duction) or counterclockwise for warmer (faster ice production).Series 15, 29 and 75: Adjustcontrol setting by turning thenumbered dial (see Figure 38).Model SP18 temperaturecontrol has been preset at thefactory for optimum iceproduction. Do not attempt tomake adjustments. UL5041234567CONTROLFigure 38