Airmar CM422—Welded-Tank Mount - Manual (Page 2)

Copyright © 2014 Airmar Technology Corporation. All rights reserved.
35 Meadowbrook Drive, Milford, New Hampshire 03055-4613, USA
• www.airmar.com
Boat Types (see Figure 1)
• Displacement hull powerboats—Locate amidships.
• Planing hull powerboats—Mount well aft and well inboard of
the first set of lifting strakes to ensure that the transducer will be
in contact with the water at high speeds.
Outboard and I/O—Mount just forward of the engine(s).
Inboard—Mount well ahead of the propeller(s) and shaft(s).
Stepped hull—Mount just ahead of the first step.
Installing
Orient the transducer, so one boss on the top is facing fore and
the other boss is aimed aft. The bosses must be parallel to the
centerline of the boat (see Figure 2).
Cable Routing & Connecting
CAUTION: If the transducer came with a connector, do not
remove it to ease cable routing. If the cable must be cut and
spliced, use Airmar’s splash-proof Junction Box No. 33-035 and
follow the instructions provided. Removing the water-proof
connector or cutting the cable, except when using water-tight
junction box, will void the transducer warranty.
1. Route the cable to the echosounder being careful not to tear the
cable jacket when passing it through the bulkhead(s) and other
parts of the boat. Use grommets to prevent chafing. To reduce
electrical interference, separate the transducer cable from other
electrical wiring and the engine(s). Coil any excess cable and
secure it in place with cable ties to prevent damage.
2. Refer to your echosounder owner’s manual to connect the
transducer to the instrument.
Checking for Leaks
When the boat is placed in the water, immediately check around
the transducer for leaks. Note that very small leaks may not be
readily observed. Do not leave the boat in the water for more than
3 hours before checking it again. If a leak is observed, repeat the
installation procedures immediately.
Maintenance, Parts, & Replacement
Anti-fouling Paint
Surfaces exposed to salt water must be coated with anti-fouling
paint. Use water-based anti-fouling paint only. Never use ketone
based anti-fouling paint, since ketones can attack many plastics
possibly damaging the transducer. Apply anti-fouling paint every 6
months or at the beginning of each boating season.
Cleaning
Aquatic growth can accumulate rapidly on the transducer’s
surface, reducing its performance within weeks. Clean the surface
with a Scotch-Brite® scour pad and mild household detergent,
being careful to avoid making scratches. If the fouling is severe,
lightly wet sand it with fine grade wet/dry paper.
Figure 2.Orient bosses fore and aft
Copyright © 2013 Airmar Technology Corp.
bosses
top view
NOTE: Orient one
boss forward
and one boss
toward the stern.
parallel to
centerline
of boat
inboard
Figure 1.
displacement hull
Best location for the transducer
stepped hull
outboard and I/O
Copyright © 2006 Airmar Technology Corp.
Transducer Replacement & Parts
The information needed to order a replacement Airmar transducer
is printed on the cable tag. Do not remove this tag. When ordering,
specify the part number, date, and frequency in kHz. For con-
venient reference, record this information near the top of page one.
Obtain parts from your instrument manufacturer or marine dealer.
Gemeco Tel: 803-693-0777
(USA) Fax: 803-693-0477
email: [email protected]
Airmar EMEA Tel: +33.(0)2.23.52.06.48
(Europe, Middle East, Africa) Fax: +33.(0)2.23.52.06.49
email: [email protected]