5-1
5. MAINTENANCE &
TROUBLESHOOTING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
WARNING
5.1 Maintenance
Regular maintenance is important for continued performance. Important points to be checked
from time to time are shown below.
Check point
Action
Interval
Transducer cable
If conductors are exposed, replace cable.
Monthly
Power cable plug, transducer cable plug
If loosened, secure tightly.
Monthly
Grounding
If corroded, clean.
Monthly
Ship’s mains voltage
If out of ratings, correct problem.
Monthly
Transducer cleanliness
Marine life on the transducer will result in a
gradual decrease in sensitivity. Check the
transducer face each time the boat is
drydocked. Carefully remove any marine
life with piece of wood or fine sandpaper.
At
dry-dock
Display unit cleanliness
Dust or dirt may be removed with a soft
cloth. Water-diluted mild detergent may be
used if desired. DO NOT use chemical
cleaners to clean the display unit; they
may remove paint and markings.
LCD screen
Wipe the LCD carefully to prevent
scratching, using tissue paper and an LCD
cleaner. To remove dirt or salt deposits,
use an LCD cleaner, wiping slowly with
tissue paper so as to dissolve the dirt or
salt. Change paper frequently so the salt
or dirt will not scratch the LCD. Do not use
solvents such as thinner, acetone or
benzene for cleaning.
As
necessary
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