Airmar P48W User Manual

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Page 1

INSTALLATION INSTRUCTIONSOWNER’S GUIDE &

Transom or Trolling Motor Mount

CHIRP or Adjustable Wide-beam Transducer

Models: P48W, TM130M, TM150M, TM210H

U.S. Patent 7,961,522. UK 2 414 077. U.S. Patents Pending

Follow the precautions below for optimal product performance and to reduce the risk of property damage, personal injury, and/or death.

WARNING: Always wear safety goggles and a dust

17-499-01 rev. 06 01/18/13

mask when installing.

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: P48W—Operate at 200 kHz only. Operating at any other frequency will permanently damage the transducer and/or the echosounder.

CAUTION: CHIRP transducer—Always operate the transducer in water. Operating in air will allow the transducer to overheat resulting in failure.

CAUTION: Never pull, carry, or hold the transducer by its cable; this may sever internal connections.

CAUTION: Never strike the transducer with anything except the palm of the hand to release it.

CAUTION: Never use solvents. Cleaner, fuel, sealant, paint and other products may contain solvents that can damage plastic parts, especially the transducer’s face.

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

Part No._________________Date___________Frequency________kHz

P48W

TM150M

Applications

• Recommended for boat up to 7m (22’) long

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

• P48W—Not recommended for stepped transoms because the transducer will be difficult to adjust.

• 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 sensor from frontal impact only

• P48W or TM150M—Trolling motor fitting adapts transducer for use with a trolling motor or optional Portable Mount Kit

Transom Mount

Attaching the Bracket to the Transducer

1. Insert the sensor’s pivot posts into the recesses on the sides of the bracket (see Figure 1).

2. Press the two nuts into the slots in the back of the bracket.

3. Align the holes in the sensor, bracket, and nuts. Insert the two machine screws capturing the nuts. Tighten the machine screws until the sensor will stay in the “up” (released) position unaided.

IMPORTANT: 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 Phillips screwdrivers Pencil Electric drill Drill bits:

Bracket holes 4mm, #23, or 9/64" Transom hole (optional) 18mm, 11/16", or 3/4"

24 mm or 15/16" or 1"

Cable clamp holes 3mm or 1/8" Masking tape Angle finder (some installations) Marine sealant (suitable for below waterline) Straight edge Grommet(s) (some installations) Cable ties (some installations) Band clamp Water-based anti-fouling paint (mandatory in salt water)

(trolling motor mount) Measure before purchasing ( Figure 9)

(Raymarine 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: Do not mount the sensor where the boat may be supported during trailering, launching, hauling, or storage to avoid damaging the transducer’s face.

pivot post (2)

bracket

sensor

Figure 1. Attaching the bracket to the transducer

recess (2)

machine

screw (2)

slot (2)

nuts

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

75mm (3") minimum beyond swing radius

Figure 2. Mounting location on single drive boat

• For the best performance, the transducer’s face 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 sensor upward.

• Mount the sensor as close to the centerline (keel) of the boat as

possible to ensure the transducer’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, so the water passing over the transducer does not cause a flow disturbance to the propeller (see Figure 2). The starboard side where the propeller blades are moving downward is preferred.

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

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

2. Being sure the bottom of the sensor is parallel to the waterline, mark the location of the screw holes with an “X” in the center of the two outer most slots.

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

• Small aluminum and fiberglass boats (20° transom angle)— Use the 9° shim with the taper up (see Figure 4). If your boat is capable of speeds above 20kn (28MPH), install the bracket with only the 4.5

° shim, taper up.

• If you are unsure about using the shim(s)—Experiment with the shims by following the instructions “Mounting & Adjusting.”

Mounting & Adjusting

CAUTION: Do not position the leading edge of the sensor lower than the trailing edge because aeration will occur.

CAUTION: Do not position the sensor deeper into the water than necessary to avoid increasing drag, spray, and water noise and reducing boat speed.

1. Apply marine sealant to the threads of two, #10 x 1-1/4", selftapping bracket screws to prevent water seepage into the transom. Be sure the nuts are in the slots in the back of the bracket and any shim(s) is in place (see Figure 1). Screw the sensor to the hull (see Figure 5). Do not tighten the screws

completely at this time.

2. Using a straight edge, sight the underside of the sensor relative to the underside of the hull (see Figure 4). The trailing edge of the sensor must be 1 – 6mm (1/16 – 1/4") below the leading edge.

3. Using the vertical adjustment space in the bracket slots, slide the sensor up or down until the bottom left corner of the sensor projections 0 – 3mm (0 – 1/8") below the bottom of the hull (see Figure 3). When you are satisfied with the position of the sensor, tighten the two bracket screws.

Testing on the Water

1. With the beam angle factory-set to 90°, become familiar with your echosounder’s performance at a speed of 4kn (5MPH).

2. Gradually increase the boat speed and observe the gradual decline in performance due to turbulent water flowing over the sensor’s active surface.

cable cover

cable clamp

Compensating for Transom Angle: Shims

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 designed for a standard 13 needed for this installation. If your boat is capable of speeds above 20kn (28MPH), install the bracket with the 4.5° shim, taper down (see Figure 4).

• Stepped transom and jet boats (3 shim with the taper down (see Figure 4). If your boat is capable of speeds above 20kn (28 MPH), install the bracket with both the 9

° shims, taper down. Install the 4.5° shim against the

and 4.5 transom after shaving the interfering portion of the rails and lower bump. Place the 9

° transom angle)—The bracket is

° transom angle. The 9° shim is not

° transom angle) —Use the 9°

° shim and bracket assembly on top.

allow 76mm

(3”) of slack

to adjust

beam angle

Hull projection 0– 3 mm (0–1/8")

Figure 3. Vertical adjustment and cable routing

50mm (2")

screw (2) location

parallel to waterline

Page 3

13° transom angle

14°–17° angle

shim

with taper down

20° transom angle3° transom angle

4.5

shim

with taper up

parallel

May improve operation above 20kn (23 MPH)

4.5 with taper down

angle

shim

slight angle

May improve operation above 20kn (23 MPH)

more angle

Figure 4. Adjusting the sensor’s angle

4.5

shim

with taper down

3. If the decline in performance is sudden (not gradual), identify the boat speed at which the onset occurred. Return the boat to this speed, then gradually increase speed while making moderate turns in both directions.

4. If the performance improves while turning to the side on which the sensor is installed, its position probably needs adjustment. The sensor is probably in aerated water.

IMPORTANT: To improve performance, try the following, one at a time, in the order given.

a. Increase the sensor’s transom angle in the water. Review

“Compensating for Transom Angle: Shims” and see Figure 4.

b. Move the sensor farther into the water in increments of 3mm

(1/8") (see Figure 3).

c. Move the sensor closer to the centerline of the boat.

Fill unused screw holes with marine sealant.

Stabilizing the Bracket

Stabilize the bracket by installing the third bracket screw at the bottom of the center slot (see Figure 5). Using a 4mm, #23, or 9/64" drill bit, drill a hole 22mm (7/8") deep.

Apply marine sealant to the threads of the third #10 x 1-1/4" selftapping screw to prevent water seepage into the transom. Tighten the screw.

Releasing the Bracket

The sensor releases easily when it is fastened to the hull. Give a sharp blow to the bottom of the sensor using the palm of the hand.

stabilizing screw

Figure 5. Stabilizing the bracket

nearly parallel

May improve operation above 20kn (23 MPH)

more angle

and 4.5

shims with tapers down

slight angle

May improve operation above 20kn (23 MPH)

more angle

Cable Routing & Connecting

CAUTION: If the transducer came with a connector, do not remove it to ease cable routing. If the cable must be cut and spliced, use Airmar’s splash-proof Junction Box No. 33-035 and follow the instructions provided. Removing the waterproof connector or cutting the cable, except when using a water-tight junction box, will void the sensor warranty.

Route the sensor cable over the transom, through a drain hole, or through a new hole drilled in the transom above the waterline.

1. If a hole must be drilled through the transom, choose a location well above the waterline (see Figure 3). Check for obstructions such as trim tabs, pumps, or wiring inside the hull. Mark the location with a pencil. Drill a hole using the appropriate size bit to accommodate the connector.

2. Route the cable over or through the transom.

3. On the outside of the hull, secure the cable against the transom using the cable clamps. Position one cable clamp 50mm (2") above the bracket and mark the mounting hole with a pencil.

4. Position the second cable clamp halfway between the first clamp and the cable hole. Mark this mounting hole.

5. If a hole has been drilled through the transom, open the appropriate slot in the cable cover. Position the cover over the cable where it enters the hull. Mark the two mounting holes.

6. At each of the marked locations, use a 3 mm or 1/8" bit to drill a hole 10mm (3/8") deep.

7. Apply marine sealant to the threads of the #6 x 1/2" self-tapping screws to prevent water from seeping into the transom.

have drilled a hole through the transom, apply marine sealant to the space around the cable where it passes through the transom.

8. Allowing an extra 76mm (3") of cable ease near the sensor, position the two cable clamps over the cable and fasten them in place. If used, push the cable cover over the cable and screw it in place.

9. Route the cable to the instrument being careful not to tear the cable jacket when passing it through the bulkhead(s) and other parts of the boat. Use grommets where appropriate. To reduce electrical interference, separate the sensor cable from other electrical wiring and the engine(s). Coil any excess cable and secure it in place with cable ties to prevent damage.

10.Refer to your echosounder owner’s manual to connect the sensor to the instrument.

If you

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Checking for Leaks

When the boat is placed in the water, immediately check for leaks around the screws and any other holes drilled in the hull. Note that very small leaks may not be readily observed. Do not leave the boat in the water unchecked for more than three hours.

screw (2)

(6 x 1/2

cover

transducer

Optional Trolling Motor Mount: P48W or TM150M Only

NOTE: The other TM models are too large for this fitting.

Assembling the Fitting

1. Remove the transducer from the transom fitting by first removing the two screws and the cover (see Figure 6 or 7). Lift out the transducer and the spring.

2. Insert the spring and transducer in the trolling fitting (see Figure 8). Be sure the boss on the fitting engages the groove in the transducer.

3. Slide the locking ring along the cable until it rests against the transducer.

4. Using the two 6 x 3/4" screws supplied, screw the locking ring onto the trolling fitting. Be sure the notches in the locking ring mesh with the notches on the top of the transducer. Hand-tighten only. Do not over-tighten.

NOTE: Do not use the screws from the transom fitting.

spring

transom

housing

Figure 6. P48W: Disassembling/assembling transom fitting

screw (2)

(6 x 1/2

cover

transducer

screw (2)

(6 x 3/4

lock ring

transducer

spring NOTE: TM models do NOT use spring

trolling housing

slot for band clamp (2)

slot for TM150M cable exit

Figure 8. P48W or TM150M: Assembling the trolling motor fitting

support tube

(P48W shown)

transom

housing

Figure 7. TM models: Disassembling/assembling

transom fitting (TM150M shown)

cable

cable ties

band clamp

sensor

Figure 9. P48W or TM150M: Trolling motor mount

Page 5

To adjust knob: push, turn, and release

NOTE: Knob

corresponds to shape and direction of beam.

beam angle

knob

transducer

cover

screw (2)

(6 x 1/2")(6 x 1/2")

Figure 10. P48W transom mount: Adjusting the beam angle

(0° shown)

Locating & Installing the Fitting

CAUTION: Do not put tension to the cable where it exits the transducer, since excessive force can break internal connections.

CAUTION: On bow mounted motors, be sure the cable route does not result in pinching the cable when the motor is in the “up” position.

NOTE: P48W—It may be easier to adjust the beam angle before the transducer is mounted on the trolling motor. See “Operating: P48W” on page 5.

1. Purchase a stainless steel band clamp, available in the plumbing section of most hardware stores. Be sure to measure the circumference of the trolling motor to determine the correct size.

2. Loosen the screw in the band clamp so that one end of the band is free. Pass the free end through the two slots in the trolling fitting (see Figure 8).

3. Wrap the band clamp around the motor case with the sensor located on the underside (see Figure 9). Tighten the screw on the band clamp.

TM150M—Be sure the cable exits through the notch in the trolling motor fitting, and there is no tension on the cable.

NOTE: If the motor has a strut that shades the transducer, it will not significantly reduce the transducer’s performance.

4. Route the cable around the side of the motor case and along the support tube. Secure the cable to the support tube with cable ties.

P48W—Allow sufficient cable so the user can change the beam angle of the transducer.

5. Route the cable to the echosounder being careful not to tear the cable jacket. To reduce electrical interference, separate the transducer cable from other electrical wiring.

Operating: P48W

About Adjusting the Beam Angle

The transducer transmits an elliptically shaped beam that can be adjusted to different angles: fore-aft (0°), port-starboard (90°), 23°, or 45°. The degree setting indicates the widest part of the beam. Note that the width of the beam will be different at each setting.

To understand when to use each beam setting see the table below.

Setting

Fore-Aft

Beam Width

0° 38° 12°

23° 36° 18°

45° 29° 29°

90° 12° 38°

Adjusting: Transom Mount

To change the beam angle, grasp the transducer knob, push down, rotate to the desired setting, and release the knob (see Figure 10). Check that the transducer is locked into the setting by running your hand along the bottom of the transducer to be sure it is flush with the fitting.

NOTE: Knob corresponds to the direction and shape of the beam.

Adjusting: Trolling Motor or Portable Mount

The beam angles are marked on the underside of the trolling motor fitting (see Figure 11). To change the beam angle, grasp the transducer and pull outward. Rotate it until the orientation mark is aligned with the desired setting and release the transducer. Be sure the transducer is locked into the setting after the knob is released.

NOTE: When an angle is set, the orientation mark will indicate the direction of the widest part of the beam. It will also be aligned with the elliptically shaped knob on the top.

top view bottom view

knob corresponds to shape and direction of beam

Port-Starboard

Beam Width

Application

Best high-speed bottom detection Fish appear as large arches

Good high-speed detection Fish appear as prominent arches

Wider side-to-side beam than at 0

Detection similar to conventional wide-beam transducer Equal size beam width in both directions

Maximum detection while boat is moving forward Good high-speed bottom detection Fish arches are not pronounced or may not be evident

In-Hull Mount: P48W Only

NOTE: Do not in-hull mount the TM models as they will over-heat.

Although the performance will be diminished, the transducer can be adhered directly to a solid fiberglass hull—NO coring. Instructions are available at airmar.com. Go to Marine Products >Installation Instructions>In-Hull Transducers and click on “P72, P74, P76” (part number 17-010).

beam angle

orientation mark

transducer

Figure 11. P48W trolling motor mount: Adjusting beam angle

(90° shown)

Page 6

Anti-fouling Paint

Aquatic growth can accumulate rapidly on the sensor’s surface reducing performance within weeks. Surfaces exposed to salt water that do not interlock, must be coated with anti-fouling paint. Use water-based anti-fouling paint only. Never use ketone-based paint, since ketones can attack many types of plastic possibly causing damage to the sensor. Apply paint every 6 months or at the beginning of each boating season.

Maintenance

Cleaning

Clean the transducer’s face with a Scotch-Brite® scour pad and mild household detergent taking care to avoid making scratches. If the fouling is severe, lightly wet sand with fine grade wet / dry paper.

Damaged Cable Jacket

1. Should the outer jacket of the cable be abraded or cut, check that the internal conductors are not damaged.

2. If the conductors are damage free, allow the cable to dry and fill the damaged area with sealant.

3. Cover the damaged area with electrical tape.

Figure 12. P48W or TM150M: Portable Bracket (P48W shown)

Airmar Part No. 33-076-01

Severed Cable

1. Slide heat-shrink tubing onto the cable.

2. Splice each pair of matching colored conductors with rosin core solder.

3. Wrap each conductor with insulating tape at the splice.

4. Splice the braided shield wire with solder.

5. Fill the spliced area in the cable with sealant.

6. Cover the damaged area with the heat shrink tubing, following the manufacturer’s directions for its use.

NOTE: If the instrument fails to provide a reading, the problem may not be the damaged cable. The transducer, connector, or instrument could be defective.

Reassembling the Transom Fitting

1. Slide the cover over the cable onto the transducer (see Figure 6 or 7).

2. P48W—While holding the wavy spring over the pocket in the transom fitting, insert the transducer into the pocket. (The spring fits under the lip of the transducer.) Orient the transducer so the knob is facing 90

about the 45

TM models—Insert the transducer into the pocket. Be sure to face the cable toward the center of the bracket.

3. Using the two 6 x 1/2" screws supplied, fasten the cover onto the transom fitting. Hand-tighten only. Do not over-tighten.

NOTE: Do not use the screws from the trolling motor fitting.

° mark.

° and the cable exits near the bracket at

Optional Portable Bracket Kit: P48W or TM150M Only

NOTE: The other TM models are too large for this fitting.

An optional Portable Bracket Kit is available to temporarily mount the transducer to different watercraft, ice fishing apparatus, or a fixed location (see Figure 12). Installation instructions are included with the bracket.

Replacement Parts & Accessories

The information needed to order a replacement transducer is printed on the cable tag. Do not remove this tag. When ordering, specify the part number, date, and frequency in kHz. For convenient reference, record this information on the top of page one.

Lost, broken, and worn parts should be replaced immediately.

Bracket & Wedge Kit 33-491-01 Trolling Motor Kit 33-653-02 (see Figure 8) Portable Bracket Kit 33-076-01 (see Figure 12)

Obtain parts from your instrument manufacturer or marine dealer.

Gemeco Tel: 803-693-0777 (USA) Fax: 803-693-0477

email: sales@gemeco.com

Airmar EMEA Tel: +33.(0)2.23.52.06.48 (Europe, Middle East, Africa) Fax: +33.(0)2.23.52.06.49

email: sales@airmar-emea.com

AIRMAR

TECHNOLOGY CORPORATION

35 Meadowbrook Drive, Milford, New Hampshire 03055-4613, USA

www.airmar.com

Airmar P48W User Manual

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Frequently Asked Questions

User Manual