Interphase Vista Operation Manual page 15

transducer cables. If there is any hull irregularity near
the selected mounting location, it may be desirable to
drill from the outside.
2) Use a 1" hole saw and drill the hole from the outside
of the hull. Sand or clean the area around the hole,
inside and outside to insure that the sealing compound
will adhere properly to the hull. Select a marine grade
bedding/caulking compound and use according to the
instructions.
3) Remove the split hex nut and the safety retaining
washer from the housing and cable.
4) Uncoil the transducer cable and thread it through the
hole into the inside of the hull.
DANGER: DO NOT apply tension to the transducer
cables as this may sever internal connections. Apply a
1/8" thick layer of sealant on the upper flat surface of the
bronze housing and fairing block (if used).
5) From the outside of the hull, push the housing into
the 1" hole. Twist the housing slightly to squeeze out
excess sealant. Carefully confirm that the transducer is
aligned so that the fatter end (the front) is pointed
directly toward the front of the boat.
6) Re-install the bronze safety washer (making sure
recess is towards nut so it will capture the hex nut).
Install and tighten bronze hex nut (allow for swelling in
wooden hulls).
7) Remove excess sealant from the outside to assure
smooth water flow over the transducer.
DANGER: Wood hulls and fairing blocks will expand
after the boat is put back into the water, so it is
important that the transducer be only hand-tightened
until the wood fully expands. Otherwise the wood
fairing block may crack.
DANGER: Be sure to check for leaks when the boat is
placed in the water. Allow at least 24 hours after
installation for any leak to appear.
DANGER: If the boat is kept in saltwater it is
recommended that the transducer be coated with an anti-
fouling paint. USE ONLY WATER BASED ANTI-
FOULING PAINT. DO NOT USE KETONE BASED
PAINTS. Ketone based anti-fouling paint will attack
the plastic materials used in the transducer.
vistman1
page 15
Boat's
Hull
15
Wood or
Plastic
Fairing
Block (Add
sealing
compound
between
faring block
& hull).
Transducer
Tuesday, July 06, 1999 10:15