Airmar P58 User Manual

(Furuno only)

4mm, #23, or 9/64" 18mm, 11/16", or 3/4" 21mm or 13/16"

24 mm or 15/16" or 1" 3mm or 1/8"

OWNER’S GUIDE	&	INSTALLATION INSTRUCTIONS
Transom-Mount, TRIDUCER® Multisensor
			Record the information found on the cable tag for future reference
with Integral Release Bracket			Part No._________________ Date___________ Frequency__________

		Model P58
		U. S. Patents: 5,606,253; 5,719,824
	12/14/10
		WARNING: Always wear safety goggles and a dust
		mask when installing to prevent personal injury.
	04	WARNING: When the boat is placed in the water,
		immediately check for leaks around the screws and
	rev.	any other holes drilled in the hull.
	404-01
		CAUTION: Never pull, carry, or hold the transducer by
	17-
		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. Cleaners, fuel, paint,
		sealants, and other products may contain strong
		solvents, such as acetone, which attack many plastics
		greatly reducing their strength.
		IMPORTANT: Please read the instructions completely
		before proceeding with the installation. These
		instructions supersede any other instructions in your
		instrument manual if they differ.

Applications

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

•Not recommended for stepped transoms, as multisensor will be difficult to adjust

•Good operation up to 44kn (50MPH)

•Vertically orients sound beam on hull with deadrise angle up to 22°

•Adjusts to transom angles from 2°–22°

•Requires 89mm (3-1/2") of headroom to install

•Bracket protects multisensor from frontal impact only

Tools & Materials

Safety goggles

Dust mask

Screwdrivers

Pencil

Electric drill

Drill bits:

Bracket holes

Transom hole (optional)

(Raymarine only)

Cable clamp holes Masking tape

Angle finder

Marine sealant (suitable for below waterline) Straight edge

Grommets (some installations) Cable ties

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

Mounting Location

CAUTION: Do not mount in an area of turbulence or bubbles: near water intake or discharge openings; or behind strakes, struts, fittings, or hull irregularities

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

•For the best performance, the multisensor 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 headroom space above the bracket for it to release and rotate the multisensor upward (see Figure 1).

•Mount the multisensor as close to the centerline (keel) of the boat as possible to ensure the sensor 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). The starboard side where the propeller blades are moving downward is preferred.

•Twin drive boat—Mount the multisensor between the drives.

minimum

headroom

89mm (3-1/2")

Figure 1. Headroom required on a stepped transom

Copyright © 2004 - 2010 Airmar Technology Corp.

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

Copyright © 2004 Airmar Technology Corp.

			20kn (28MPH), install the bracket with both
	pivot post (2)		the 9° and 4.5° shims, taper down (see Figure
	slot (2)		5). Install the 4.5° shim against the transom
	machine		after shaving the interfering portion of the rails
			and lower bump. Place the 9° shim and
	screw (2)
			bracket assembly on top.
		•	Small aluminum and fiberglass boats
			(20° transom angle)—Use the 9° shim with
	nuts		the taper up. If your boat is capable of
	bracket		speeds above 20kn (28MPH), install the
			bracket with the 4.5° shim, taper up.
	recess (2)	• Deadrise angles greater that 16°—The
			hull projection will be zero.
	Figure 3. Attaching the bracket to the multisensor	• If you are unsure about using the shim(s)
	Copyright © 2004 Airmar Technology Corp.		Experiment with the shims by following the
	Pretest Speed & Temperature Functions		instructions “Mounting & Adjusting.”
		Mounting & Adjusting
	Connect the multisensor to the instrument and spin the paddle-
		CAUTION: Do not position the leading edge of the multisensor
	wheel. Check for a speed reading and the approximate air
	temperature. If there is no reading(s) or it is inaccurate, check the	lower than the trailing edge because aeration will occur.
	connections and repeat the test. If there is still no reading(s) or it	CAUTION: Do not position the sensor deeper into the water than
	is inaccurate, return the product to your place of purchase.
		necessary to avoid increasing drag, spray, and water noise and
	Installation	reducing boat speed.
		1. Apply marine sealant to the threads of two, #10 x 1-1/4", self-
	Attaching the Bracket to the Multisensor
	1. Insert the multisensor’s pivot posts into the recesses on the	tapping bracket screws to prevent water seepage into the
		transom. Be sure the nuts are in the slots in the back of the
	sides of the bracket (see Figure 3).
		bracket and any shim(s) is in place (see Figure 3). Screw the
	2. Press the two nuts into the slots in the back of the bracket.
		multisensor to the hull (see Figure 4). Do not tighten the screws
	3. Align the holes in the multisensor, bracket, and nuts. Insert the
		completely at this time.
	two machine screws capturing the nuts. Tighten the machine	2. Using a straight edge, sight the underside of the multisensor
	screws until the multisensor will stay in the “up” (released)
		relative to the underside of the hull (see Figure 5). The trailing
	position unaided.
		edge of the multisensor should be 1–6mm (1/16 –1/4") below
	Hole Drilling
		the leading edge.
	CAUTION: To prevent drilling too deeply, wrap masking tape	3. Using the vertical adjustment space in the bracket slots, slide
		the multisensor up or down until the bottom left corner of the
	around the bit 22mm (7/8") from the point.
		multisensor projections 0–3mm (0–1/8") below the bottom of
	Fiberglass hull—Minimize surface cracking by running the drill in
		the hull (see Figure 4). When you are satisfied with the position
	reverse until the gelcoat is penetrated.
		of the multisensor, tighten the two bracket screws.

1.At the selected location, position the multisensor, so it projects 3mm (1/8") below the bottom edge of the transom (see Figure 4).

2. Being sure the bottom of the multisensor is parallel to the

waterline, mark the location of the screw holes with an “X” in the

cable cover

center of the two outer most slots.

3. Using a 4mm, #23, or 9/64" drill bit, drill two holes 22mm (7/8")

cable clamp

deep at the locations indicated.

Compensating for Transom Angle—Shims

CAUTION: For boats capable of speeds above 20kn (28MPH)—

The trailing edge of the multisensor must be deeper in the water

than the leading edge. This will ensure that the paddlewheel is in

contact with the water at high speeds.

50mm (2")

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.

• Standard transom (13° transom angle)—The bracket is

parallel to

designed for a standard 13° transom angle. The 9° shim is not

waterline

needed for this installation. If your boat is capable of speeds

Hull projection

above 20kn (28MPH), install the bracket with the 4.5° shim,

0–3mm (0–1/8")

taper down (see Figure 5).

• Stepped transom and jet boats (3° transom angle) —Use the 9°

Figure 4. Vertical adjustment and cable routing

shim with the taper down. If your boat is capable of speeds above

Copyright © 2004 Airmar Technology Corp.

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