Over the Side Installation Instructions
Portable Survey Transducers
P01540, P02560, P02565

Certain cleaners, gasoline, paint, sealants and other products may contain strong solvents, such as acetone, which can attack many plastics dramatically reducing their strength. Clean surface of transducer with a mild detergent only.

Note: If the transducer will be installed through the hull, mount it in a fiberglass or wood hull only.
We do not recommend mounting a bronze housing in a metal hull because electrolytic corrosion will occur.

• Silicone grease or petroleum jelly (Vaseline ®)
• Pipe coupling
• Pipe with threads to match the pipe coupling
• Pipe coupling adapter:
• P01540-  1/2" - 14NPS threads
• P02560-  3/4" - 14NPS threads
• P02565-     1" - 14NPS threads
• Support Lines or cables
• Clamps
• Mild Household Detergent (i.e.,dishwashing liquid)

The transducer must be fully immersed in water and not subjected to air bubbles or turbulent water flowing across the radiating face.

Acoustic noise is always present and these sound waves can interfere with the operation of the transducer. While background noise cannot be controlled, carefully selecting the transducer mounting location can minimize the effect of vessel generated noise. The lower the noise level, the higher the echosounder gain setting that can be used.

· Background noise sources:

• Waves and air bubbles
• Fish and mammals
• Rain and hail
• Other vessels and shore

· Vessel generated noise sources;

• Propeller(s)
• Propeller shaft vibration
• Aerated and turbulent water flowing across the hull
• Machinery such as: engine, generator. gears and pumps
• Interference from other echosounders

Caution: Do not mount the sensor in an area of turbulence or bubbles:

• Near water intake or discharge openings.
• Behind strakes, fittings or hull irregularities.
• Near the keel
• Behind eroding paint (an indication of turbulence)

Caution: Never pull, carry or hold the transducer by the cable as this may sever internal connections.

1. Apply silicone grease or petroleum jelly to the threads of the pipe to facilitate disassembly.

3. Push the transducer cable through the pipe.

Alternately after the transducer is attached, clamp the cable to the outside of the pipe using cable clamps.

4. Apply silicone grease or petroleum jelly to the transducer stem. Thread the transducer stem into the pipe coupling. Careful do not smear the transducer face.

Alternately, the transducer can be mounted to an adapter plate or fairing. Then the plate or fairing is bolted or clamped to the pipe.

5.Attach a line(s) or cable(s) to the pipe near the transducer that will support the pipe from the force of the water when the boat is underway.

6.Clamp the pipe to the gunnel.

7.Fasten the line(s) or cable(s) fore and aft with sufficient tension to support the pipe when the boat is underway.

8.Route the cable to the instrument being careful not to tear the cable jacket. To reduce electrical interference, separate the transducer cable from other electrical wiring. Coil any excess cable and secure it in place with zip-ties to prevent damage.

9.Wire the transducer to the Echosounder per diagram:  Bathy-500MF or   Bathy-1500.

Over the Side Mounting

Surfaces exposed to salt water must be coated with antifouling paint.

Use water-based antifouling paint only. Never use ketone-based paints as it can attack many plastics damaging the transducer.

Aquatic growth can accumulate rapidly on the transducer's surface reducing its performance in weeks. Clean the surface, keeping it free of marine growth and petroleum residue, with a soft cloth and mild household detergent.

Inspect the cable periodically for kinks, abrasions and cuts. Repair any damage using an approved waterproofing cable repair system. Inspect connections for indications of corrosion.

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