Interphase Sonar Engine SE-200, Operation Manual

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29
Transom Mount Considerations
Transom mounted transducers are intended for low
speed boats with external props. Boats with inboard
motors and boats that regularly exceed 35MPH can not
use transom mounted transducers. This is because with
nboard motors
The prop is located in front of the transom transducers
and create aeration and excess turbulence.
I/O motors where the prop is aft of the transom do not
create this situation, but be careful that the driveshaft of
the I/O does not block the forward horizontal scan.
Boats that exceed 40MPH run a risk of having the
transom mounted transduers torn free of the transom.
The transom mounted transducers are not designed to be
used at these speeds.
Transom mounted transducers are mounted on kick-up
or break-away brackets. This allows the brackets to kick
up at about speeds above 35-40MPH or if they strike an
object. Once kicked up, the transducers must be manully
reset in order to function.
Transom Transducer Kick-Up Bracket
The transom transducer is attached to the boat with a
heavy-duty stainless steel kick-up bracket to provide
protection against impact
. When the transducer strikes
an object, or the water force exceeds the resistance of
the bracket, the transducer automatically kicks up and
becomes non-operational. The bracket does not
automatically reset at lower speeds. The transducer
must be manually returned to its operational position.
Special Note: The kick-up feature is designed as a
safety consideration to prevent the transducer from
being removed from the boat due to impact or excessive
speed. The kick-up bracket is not designed for repeated
kick-up or to be pulled up manually during loading and
unloading from boat trailers. Tests have shown that the
bracket can kick-up as many as 30 times before there is
a negative effect on the bracket. Repeated kick-up will
cause the transducer to kick-up at progressively lower
speeds. Excessive kick-ups can cause the transducer
bracket to fail. Brackets that fail due to repeated kick-
up are not covered under the transducer warranty.
If the transducer must be kicked up for installation, boat
service or loading, the nylok nut on the end of the
bracket axle can be loosened. Tighten the nut to 50 inch
pounds of torque before operating the boat.
through the spacer.
Suggested materials required for installation:
♦
Variable speed electric drill with a chuck
capacity of 10mm (3/8”) or larger.
♦
Hole saw or spade bit 19 mm (7/8”) for
transom hole to route cable and
connector
♦
Chamfer bit or 6 mm (1/4”) drill bit
♦
Drill bit No. 28 or 4 mm (9/64”)
♦
Drill bit 3 mm (7/64”)
♦
Marine bedding/sealing compound
Note: Will
Not Work at
Speeds Above
35 MPH
Transom Mount Bracket in Released Position