Maintenance - Plastimo ECHOFISH 820 Manual De Instalación Y Funcionamiento

the sonar signals.
Oil, dirt and fuel might form a film on the transducer and
2-
consequently reduce its effectiveness. Cleaning the face of
the sensor might help.
Electrical noise from the boat's motor can interfere with
3-
the sonar, which will cause weaker signals being eliminated.
The display is so cluttered that a clear bottom can
not be achieved:
Water is too much low.
1-
Water is too much turbid.
2-
There are too many debris in the water.
3-
Increase the Noise Reject to 8 or a bigger value will be help-
ful.

Maintenance

A regular care of your instrument will contribute to ensure
its optimum performance. We recommend you follow the
steps
For the case: Wipe with a cloth dipped mild detergent solu-
tion and dry.
For the screen: Clean with a soft cloth or a pelt (fresh wa-
ter or eyeglass cleaner can be used if needed). Stubborn
dirt or oil stains shall not be wiped with force; otherwise it
may scratch the screen surface. Additionally, give daily
attention to ensure the screen is kept away from any chem-
icals.
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