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Page 66 491 Echo Sounder Operations Manual
transducer. The models below can be purchased from
Northstar.
Airmar Technology Corporation may be reached at 35
Meadowbrook Drive, Milford, New Hampshire 03055-4613;
phone 603/673-9570; fax 603/673-4624.
NOTE:
Detailed information on maintaining and troubleshooting a trans-
ducer is outside the scope of this manual. Refer to the transducer
manufacturer’s documentation. Do not return a transducer to North-
star. If you need to return a transducer for service, contact the man-
ufacturer directly for instructions.
Maintaining a
transducer
Do not expose a transducer to gasoline or clean it with strong
solvents. These can penetrate and degrade the housing. If a
transducer will be exposed to saltwater, coat it with
anti-fouling paint to prevent sea growth. To clean a transducer
of sand, debris, or sea growth, use a stiff brush or putty knife.
Use sanding sparingly, as repeated sanding may affect a
transducer’s performance at high speeds. If necessary, wet
sand with finer grade wet or dry paper. Check the transducer
periodically.
Table 3: Northstar-recommended transducers
Manufacturer Model Power Northstar P/N
Airmar B260 1 kW TD1004
Airmar B744V
(w/3-wire speed)
600 W TD1005
Airmar P66 600 W TD1006