Airmar P66 User Manual

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OWNER’S GUIDE

Transom-Mount with Integral Release Bracket

Transducer or TRIDUCER® Multisensor

Model P66

U. S. Patents: 5,606,253; 5,719,824

02/03/14

Follow the precautions below for optimal

product performance and to reduce the risk of

rev. 05

property damage, personal injury, and/or death.

WARNING: Always wear safety goggles and a dust

mask when installing.

247-

17-

WARNING: When the boat is placed in the water,

immediately check for leaks around the screws and

any other holes drilled in the hull.

CAUTION: Do not attach the sensor to the bracket

before fastening the bracket to the hull. It is VERY

difficult to separate them if the bracket is unattached.

CAUTION: Never pull, carry, or hold the transducer by

the cable as this may sever internal connections.

CAUTION: Never strike the multisensor with anything

except the palm of the hand. Never strike the

paddlewheel.

CAUTION: Never use solvents. Cleaner, fuel, sealant,

paint, and other products may contain solvents that can

damage plastic parts, especially the transducer’s face.

IMPORTANT: Please read the instructions completely

before proceeding with the installation. These

instructions supersede any other instructions in your

instrument manual if they differ.

Tools & Materials

Safety goggles

Dust mask

Scissors

Masking tape

Electric drill

Drill bits:

Bracket holes

4mm, #23, or 9/64"

Transom hole (optional)

21mm or 13/16"

Cable clamp holes

3mm or 1/8"

Angle finder

Marine sealant (suitable for below waterline)

Screwdrivers

Straight edge

Pencil

Grommet(s) (some installations)

Cable ties

Water-based anti-fouling paint (mandatory in salt water)

minimum 127mm (5")

max. no speed sensor

space

191mm (7-1/2")

max. with speed sensor

213mm (8-1/2")

Figure 1. Stepped transom: headroom requirement

INSTALLATION INSTRUCTIONS

Record the information found on the cable tag for future reference.

Part No._________________Date___________Frequency________kHz

Transducer

TRIDUCER ®

Multisensor

Applications

•Not recommended for boats with large inboard engine(s)

•Not recommended for stepped hull

•Good operation up to 44kn (50MPH)

•Vertically orients sound beam on hull with deadrise angle up to 30°

•Adjusts to transom angles from 2°–22°

•Bracket protects sensor from frontal impact only

Mounting Location

CAUTION: Do not mount in line with or near water intake or discharge openings or behind strakes, fittings, or hull irregularities that will disturb the water flow.

CAUTION: Avoid mounting the sensor where the boat may be supported during trailering, launching, hauling, or storage.

•For the best performance, the sensor must be in contact with smooth water. To identify an area of clean water, observe the water flow off the transom while the boat is underway.

•Allow space above the bracket for it to release and rotate the sensor upward (see Figure 1).

•Mounting on the starboard side of the hull where the propeller blades are moving downward is preferred.

•Mount the sensor as close to the centerline (keel) of the boat as possible to ensure the sensor’s face remains in the water when the boat is turning.

-Single drive boat—Mount at least 75mm (3") beyond the swing radius of the propeller (see Figure 2).

-Twin drive boat—Mount the sensor between the drives.

NOTE: Starboard side of hull where propeller blades are moving downward is preferred.

75 mm (3") minimum beyond swing radius

Figure 2. Mounting location on single drive boat

Pretest Speed & Temperature Functions

Figure 3. Template

for starboard side of boat

Drill at locations labeled “B” for transom angles 16° through 22°

(most small aluminum boats)

B	B	B



A	A	A

Drill at locations labeled “A” for transom angles 2° through 15°

(most boats)

Align arrow with bottom of transom

Connect the multisensor to the instrument and spin the paddlewheel. Check for a speed reading and the approximate air temperature. If there is no reading(s) or it is inaccurate, check the connections and repeat the test. If there is still no reading(s) or it is inaccurate, return the product to your place of purchase.

Installation

CAUTION: Install the bracket before attaching the sensor.

Hole Drilling

CAUTION: To prevent drilling too deeply, wrap masking tape around the bit 22mm (7/8") from the point.

NOTE: Fiberglass hull—Minimize surface cracking by running the drill in reverse until the gelcoat is penetrated.

1.Cut out the template (see Figure 3).

2.At the selected location on the starboard side of the hull, position the template, so the arrow at the bottom is aligned with the bottom edge of the transom (see Figure 4). Being sure the template is parallel to the waterline, tape it in place.

3.Using a 4mm, #23, or 9/64" bit, drill three holes 22mm (7/8") deep at the marked locations.

Compensating for the Transom Angle: Shim

parallel to waterline		CAUTION: For boats capable of speeds above 20kn (28MPH)—The

trailing edge of the sensor must be deeper in the water than the leading

		edge. This will ensure that the paddlewheel is in contact with the water at
	Align template vertically	high speeds.
	Align template vertically	For the best performance, the transducer beam must be aimed straight

		at the bottom. Since the transom of most boats is angled, the bracket
		must compensate for it. Measure the transom angle of the boat with an
		angle finder.
	slope of hull	• Standard transom (13° transom angle)—The bracket is designed for a
	waterline	standard 13° transom angle. The shim is NOT needed for this installation. Go to
	waterline	"Mounting the Bracket."
	parallel to waterline	• Stepped transom and jet boats (3° transom angle) —Use the shim with the
	parallel to waterline	taper down.
		taper down.
	align template arrow with	• Small aluminum and fiberglass boats (20° transom angle)—Use the shim
	bottom edge of transom	with the taper up.
		• If you are unsure about using the shim—Experiment with the shim. Follow
	Figure 4. Template position	the instructions: “Mounting the Bracket”, “Attaching the Senor to the Bracket”,
	Copyright © 2003 Airmar Technology Corp.	and “Checking the Angle and Projection.”
bracket		self-tapping	closed
screw	screws	screw	closed
	screws	mounting ears
	(self-tapping	mounting ears
	(self-tapping
	#6 x 5/8")	actual size
		actual size