Garmin GPSMAP 238 Sounder User Manual download pdf (Page 111)

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Appendix C

Maintenance

Cleaning

The GPSMAP 188/188C/238 Sounder is constructed of high quality materials and does not require

user maintenance other than cleaning. Clean the unit using a cloth dampened with a mild detergent

solution and then wipe dry. Avoid chemical cleaners and solvents that may damage plastic components.

WARNING: The GPSMAP 188C Sounder lens is coated with a special anti-reﬂ ective

coating which is very sensitive to skin oils, waxes, and abrasive cleaners. CLEANERS

CONTAINING AMMONIA, ALCOHOL, ABRASIVES, OR ANTI-GREASE DETERGENTS WILL

HARM THE ANTI-REFLECTIVE COATING. It is very important to clean the lens using an

eyeglass lens cleaner, which is speciﬁ ed as safe for anti-reﬂ ective coatings and a clean,

lint-free cloth.

Storage

Do not store the GPSMAP 188/188C/238 Sounder where prolonged exposure to temperature

extremes may occur (such as in the trunk of a car) as permanent damage may result. User informa-

tion, such as waypoints, routes, etc. will be retained in the unit’s memory without the need for external

power. It is always a good practice to back up important user data by manually recording it or down-

loading it to a PC (transferring it to MapSource) or save to a data card (pg 82).

Water Immersion

The GPSMAP 188/188C/238 Sounder is waterproof to IEC Standard 529 IPX7. It can withstand

immersion in 1 meter of water for 30 minutes. Prolonged submersion can cause damage to the unit.

After submersion, be certain to remove the data card and dry the compartments before reuse.

To resolve problems that cannot be remedied using this guide, contact Garmin Customer Support

in the U.S.A. at 800-800-1020 or Garmin Europe at 44-1794-519944.

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Garmin GPSMAP 238 Sounder User Manual Page 111