20 Fishfinder 90/140 Owner’s ManualAPPENDIX > C ARING FOR THE FISHFINDERCaring for the FishfinderThe Fishfinder case is constructed of high quality materialsand does not require user maintenance except cleaning.Cleaning the CaseClean the Fishfinder’s outer casing (except for the screen)using a cloth dampened with a mild detergent solution, andthen wipe it dry. Avoid chemical cleaners and solvents thatmay damage plastic components.Cleaning the ScreenThe Fishfinder screen should be cleaned using a soft, clean,lint-free cloth. Water or eyeglass cleaner can be used ifneeded. If these are used, apply the liquid to the cloth andthen gently wipe the screen with the moistened cloth.WARNING: The Fishfinder screen is coated with aspecial anti-reflective coating which is very sensitiveto skin oils, waxes, and abrasive cleaners. CLEANERSCONTAINING AMMONIA WILL HARM THEANTI-REFLECTIVE COATING. It is very important toclean the screen using an eyeglass lens cleaner which isspecified as safe for anti-reflective coatings and a clean,lint-free cloth.StorageDo not store the Fishfinder where prolonged exposure totemperature extremes may occur (such as in the trunk of acar), because permanent damage may result.Water ImmersionThe Fishfinder is waterproof to IEC Standard 60529 IPX7.It can withstand immersion in 1 meter of water for 30minutes. Prolonged submersion can cause damage to theFishfinder. After submersion, be certain to wipe and air drythe Fishfinder before reuse.