Airmar P6 User Manual

INSTALLATION INSTRUCTIONSOWNER’S GUIDE &
Thru-Hull: Low-Profile, Flush & Retractable
Shorty
Models: P6, P7, P8, P208
Follow the precautions below for optimal product performance and to reduce the risk of property damage, personal injury, and/or death.
17-273-01 rev. 04 02/06/13
WARNING: Always wear safety goggles and a dust mask when installing.
WARNING: Immediately check for leaks when the boat is placed in the water. Do not leave the boat unchecked for more than three hours. Even a small leak may allow considerable water to accumulate.
WARNING: Retractable models—The O-rings must be intact and well lubricated to make a watertight seal.
Depth Transducer
Record the information found on the cable tag for future reference.
Part No._________________Date___________Frequency_________kH
P7 Low profile
P8 Low profile, retractable
Applications
• Recommended for fiberglass or metal hulls only
• Low profile housing recommended for cruising sailboats and planing hull powerboats
• Flush housing recommended for racing sailboats and high­speed powerboats
• Accommodates up to a 20° deadrise angle.
WARNING: Retractable models—Always attach the safety wire to prevent the sensor insert or blanking plug from backing out in the unlikely event that the cap nut fails or is screwed on incorrectly.
CAUTION: Never pull, carry, or hold the sensor by its cable; this may sever internal connections.
CAUTION: Never use a fairing with a plastic housing; the protruding sensor would be vulnerable to damage from impact.
CAUTION: The arrow on the top of the transducer insert and the flange of the housing must point forward toward the bow.
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 Electric drill with minimum 10mm (3/8") chuck capacity Drill bit 3mm or 1/8" Hole saw 51mm or 2" Countersink tool (installing P208 flush housing) Sandpaper Mild household detergent or weak solvent (such as alcohol) File (installation in a metal hull) Marine sealant (suitable for below waterline) Additional washer [aluminum hull less than 6mm (1/4") thick] Grommet(s) (some installations) Cable ties Water-based antifouling paint (mandatory in salt water) Installation in a cored fiberglass hull (see page 3):
Hole saw for hull interior 60mm or 2-3/8" Fiberglass cloth and resin or Cylinder, wax, tape, and casting epoxy
Identify Your Model
The model name is printed on the cable tag.
Hull Thickness
Model Minimum Maximum
P6, P7 (low profile) 6mm (1⁄4") 38mm (11⁄2")
P8 (low profile, retractable) 6mm (1⁄4") 25mm (1")
P208 (flush, retractable) 11mm (7⁄16") 30mm (13⁄16")
large displacement hulls
small displacement hulls
installation location and operating results of similar boats before proceeding.
Fin keel sailboats—Mount on or near the centerline and forward of the fin keel 300–600 mm (1–2').
Full keel sailboats—Locate amidships and away from the keel at the point of minimum deadrise.
planing hulls
outboard and I/O
fin keel sailboats
Figure 1.
Copyright © 2005 Airmar Technolog y Corp.
full keel sailboats
Best location for transducer
stepped hull
Mounting Location
Guidelines
CAUTION: Do not mount the transducer in line with or near water intake or discharge openings; or behind strakes, fittings or hull irregularities that may disturb the water flow.
CAUTION: Do not mount the transducer where the boat may be supported during trailering, launching, hauling, or storage to avoid damaging the transducer’s face.
• The water flowing under the hull must be smooth with a minimum of bubbles and turbulence (especially at high speeds).
• The transducer must be continuously immersed in water.
• The transducer beam must be unobstructed by the keel or propeller shaft(s).
• Choose a location away from interference caused by power and radiation sources such as: the propeller(s) and shaft(s), other machinery, other echosounders, and other cables. The lower the noise level, the higher the echosounder gain setting that can be used.
• Choose a location with a minimal deadrise angle, so the transducer beam will be aimed toward the bottom.
• Choose an accessible spot inside the vessel with adequate headroom for the height of the housing, tightening the nuts, and removing any insert.
Model P6, P7 76mm (3") Retractable P8, P208 153mm (6")
Boat Types (see Figure 1)
Displacement hull powerboats—Locate amidships near the centerline. The starboard side of the hull where the propeller blades are moving downward is preferred.
Planing hull powerboats—Mount well aft, on or near the centerline, 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. The starboard side of the hull where the propeller blades are moving downward is preferred.
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. Boat capable of speeds above 25kn (29MPH)—Review the
2
Minimum Headroom
Installation
Hole Drilling
Cored fiberglass hull—Follow separate instructions on page 3.
1. Drill a 3mm or 1/8" pilot hole from inside the hull. If there is a rib, strut, or other hull irregularity near the selected mounting location, drill from the outside.
2. Using a 51 mm or 2" hole saw, cut a hole perpendicular to the hull from outside the hull.
P208 flush housing — Use a countersink tool to make a “seat” in the hull.
3. Sand and clean the area around the hole, inside and outside, to ensure that the sealant will adhere properly to the hull. If there is any petroleum residue inside the hull, remove it with either mild household detergent or a weak solvent (alcohol) before sanding.
Metal hull—Remove all burrs with a file and sandpaper.
Bedding
CAUTION: Be sure the surfaces to be bedded are clean and dry.
Apply a 2mm (1/16") thick layer of marine sealant around the flange and up the sidewall of the housing that will contact the hull (see Figure 2). The sealant must extend 6 mm (1/4") higher than the combined thickness of the hull, any washer(s), and the hull nut. This will ensure there is sealant in the threads to seal the hull and hold the hull nut securely in place.
Installing
1. From outside the hull, push the housing (and cable if applicable) into the mounting hole using a twisting motion to squeeze out excess marine sealant. Align the arrow on the flange of the housing to point forward toward the bow (see Figure 2).
2. From inside the hull, slide any washer(s) onto the housing.
NOTE: Some installations do not have a washer.
Aluminum hull less than 6mm (1/4") thick—Use an additional rubbery, plastic, or fiberglass washer. Never use bronze because electrolytic corrosion will occur. Never use wood because it will swell, possibly fracturing the plastic housing.
3. Screw the hull nut into place, being sure the notch on the upper rim of the housing is still positioned forward toward the bow.
Hand-tighten only. Do not over-tighten. Plastic housing—Do not clamp tightly on the wrench flats
possibly fracturing the housing. Cored Fiberglass Hull—Do not over tighten, crushing the hull.
4. Remove the excess sealant on the outside of the hull to ensure smooth water flow under the transducer.
Retractable Models
1. After the sealant cures, inspect the O-rings on the transducer insert (replace if necessary) and lubricate them with the silicone lubricant supplied (see Figure 3). The O-rings must be intact and well lubricated to make a watertight seal.
2. Slide the insert into the housing with the arrow on the top pointing forward toward the bow. Seat it into place with a pushing twisting motion until the key fits into the notch (see Figure 2). The arrow on the top of the insert, the notch, and the arrow on the flange of the housing will all be aligned. Be careful not to rotate the housing and disturb the marine sealant.
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