Humminbird 4-id 用户手册

MAINTENANCE 
 
Your Humminbird fishfinder is designed to provide years of trouble free operation with 
virtually no maintenance. Follow these simple procedures to ensure your Humminbird 
continues to deliver top performance. 
 

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If the unit comes into contact with salt spray simply wipe the affected surfaces with a 
cloth dampened in fresh water. Do not use a chemical glass cleaner on the lens. 
Chemicals in the solution may cause cracking in the lens of the unit. 

 

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When cleaning the LCD protective lens, use a chamois and non-abrasive, mild 
cleaner. Do not wipe while dirt or grease is on the lens. Be careful to avoid 
scratching the lens. 

 

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If your boat remains in the water for long periods of time, algae and other marine 
growth can reduce the effectiveness of the transducer. Periodically clean the face of 
the transducer with liquid detergent. Pivoting the transducer up in the bracket may 
allow better access for inspection or cleaning. 

 

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If your boat remains out of the water for a long period of time, it may take some time 
to wet the transducer when returned to the water. Small air bubbles can climb to the 
surface of the transducer and interfere with proper operation. These bubbles 
dissipate with time, or you can wipe the face of the transducer with your fingers after 
the transducer is in the water. 

 

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Never leave the fishfinder in a closed car or trunk - the extremely high temperatures 
generated in hot weather can damage the electronics.