Maintenance - Furuno Network Sounder DFF3 Operator's Manual

4.

MAINTENANCE

WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
4.1 Maintenance
Regular maintenance is essential for good performance. Check the items listed in the table below
at the suggested interval to help keep your equipment in good shape for years to come.
Item
Transducer cables
Power cable, sensor
cable
Ground
Power supply voltage
Cleaning the network
sounder's cabinet
Transducer
Check point, action
Check that cables are tightly fastened and are not
damaged. Refasten if necessary. Replace if dam-
aged.
Check that these cables are tightly fastened and
not damaged. Refasten if necessary. Replace if
damaged.
Check for corrosion. Clean if necessary.
Check voltage. If out of rating correct problem.
Dust or dirt on the cabinet may be removed with a
dry cloth. Do not use chemical-based cleaners to
clean the cabinet; they can remove markings and
damage the cabinet.
Marine life on the transducer face will result in a
gradual decrease in sensitivity. Check the trans-
ducer face for cleanliness each time the boat is
dry-docked. Carefully remove any marine life with
a piece of wood or fine-grade sandpaper.
19
NOTICE
Do not apply paint, anti-corrosive
sealant or contact spray to coating
or plastic parts of the equipment.
Those items contain organic solvents
that can damage coating and plastic
parts, especially plastic connectors.
Check interval
Once a month
Once a month
Once a month
Once a month
Once a month
When vessel is
dry-docked