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INSTALLATION FOR BOAT HULL -MODEL MARINE
The best ultrasonic systems against fouling ever made. Guaranteed!
IMPORTANT TO KNOW BEFORE ASSEMBLY:
NO drilling required…. if single hull
Remember. If double hull…the inner hull MUST be drill out.
NB. If air between transducer and water…. The system will NOT work!
Exercise caution when working on the vessel, especially in confined enclosed spaces
or when working in the bottom or ‘bilge’ area of the boat where LPG gas or fuel spills collect.
These areas may contain residual fuel or fumes which can be harmful when inhaled.
Ensure the work area is properly ventilated prior to beginning installation.
Extreme vigilance should be used in these spaces especially when working alone.
A basic understanding of drilling, sanding and the vessel’s electrical system are needed for the installation work required.
The equipment must be installed in accordance with these instructions in this manual.
Failure to do so could result in poor product performance, personal injury and/or damage to the vessel.
The success and performance of the system depends on a quality installation.
CLEANING OF THE HULL
It is important to clean the hull close to the time of the installation.
Barnacles and mussels are not killed by this system.
This system kills the micro-organisms at the bottom of the food chain.
Algae and other vegetation are killed and consequently the barnacles and mussels that feed on them will not attach to the hull.
Planning & Positioning
Before beginning work it is important to plan out the installation, taking note of:
The vessels hull design.
Location for the transducers and control box.
Cable runs and power supply.
Location of Control Box
The control box is sealed and water resistant so can be installed in the most convenient location,
preferably above the water line. The length of cables to the transducers should be taken into consideration for the location of the control box.
Ultrasonic sound waves will only work properly on fiberglass, aluminum and steel hulls. The system is not suitable for wooden hulls.
Transducers must be bonded directly to the hull of the boat. Special care must be taken to ensure that they are not bonded to a false floor, cavity, over a keel, or on the inner layer of a balsa/foam cored boat.
A direct connection to the hull may require removing any spacing or other layer such as a sandwich foam or balsa core.
If working with steel or aluminum, be sure not to connect over welds or seams in the material.
Avoid mounting transducers close to any objects such as stringers, bulkheads, water tanks, fuel tanks, transoms, depth finder and fish finder. Ideally, they should be 30 cm away from these areas for the system to operate most effectively.
The diagrams below show the general optimum areas for mounting transducers, since every vessel is different.
The illustration should be used as a general guide only.
On smaller power craft under 10m, the transducer should be positioned in close proximity to the propeller and shaft to help protect these isolated parts.
Transducers should be fitted onto a solid part of the hull, see under hull mounting above.
They should also be approximately 30cms off the center line.
For stern drive units, transducers should also be approximately 10 to 13cms forward of the transom.
These measurements are a guide only, but the surrounding structures in the vessel will determine the final position.
A reasonably flat area of the hull should be chosen for transducer locations and the surface should be well prepared before mounting (see preparation and mounting instructions below).
Installing the Control Box
The control box can be installed in any convenient location, preferably above the water line.
1. Unscrew the four screws on the cover of the control box. These screws will not un-screw completely, as they are designed to stay with the cover. Remove the cover and place it aside.
2. The mounting screws are placed in the same holes as the cover screws.
Use four suitable screws to secure the control box.
3. Mark the location for the four corner mounting screws. Using a drill bit, drill the mounting holes. Use caution to make sure that you are not drilling into the hull of the boat.
4. Locate the 12 volt DC power source. This can be either a protected circuit from the vessels
electrical panel, or it can be direct to the battery via a local 5 amp fuse or breaker.
Use stranded cable rated at 5 amps or more. Leave switched off until testing the installation.
Mounting the Transducer to the Hull
When mounting transducers, the goal is to make 100% contact between the transducer and the hull.
The better you prepare the surface, the better the result.
To make a neat and tidy installation, proceed as follows:-
1. Degrease the general area where mounting the transducer and also degrease the face of the transducer using either isopropyl alcohol, methylated or surgical spirit.
2. Draw a pencil circle around base of transducer as photograph number one below, abrade hull within this circle using medium grade sandpaper. Mask around circle as in the photograph two below. Also mask lower part of the transducer.
3. Mix approximately 2 tablespoons of glue and apply to base of transducer, avoiding air pockets. Place transducer in center of masked area and push down hard to expel surplus. Masking tape should be used during bonding to keep the transducers in place on sloping parts of the hull. After about three minutes, depending on temperature, run around perimeter of transducer with a sharp pointed blade and ease surplus away.
4. Allow 2 hours for the glue to set before removing the masking tape which should come away with the surplus. Take care not to disturb transducer during the above process while the glue sets.