User manual STANDARD HORIZON R199 INSTALL GUIDE

[. . . ] Assembling the transducer--M260 shown AIRMAR ® Test the Selected Mounting Location pressure waves Establishing a Performance Baseline The results of this test are used as a basis of comparison to determine the best in-hull location for the transducer. 1/3 aft LWL (Load Waterline Length) displacement hull 150-300mm (6-12") 1. Take the boat to the maximum depth in which you will be operating the echosounder. If deep water is not available, find a location with at least 30m (100'). Connect the transducer to the echosounder. Caution: Never pull, carry, or hold the transducer by the cable as this may sever internal connections. outboard and I/O planing hulls inboard 3. [. . . ] Wet the surface of the hull and press the active face of the transducer against it through the bag (see Figure 4-B). C. Warning: Always wear safety goggles and a dust mask. This method can be used at any location. Coat the active face of the transducer with a water-based lubricant (such as K-Y® jelly). With a twisting motion, press the face firmly against the hull (see Figure 4-C). After testing, wipe away all traces of the lubricant from the transducer's face. AIRMAR ® Caution: Do not mount the transducer: Near water intake or discharge openings, Behind strakes, fittings, or hull irregularities. Boat Types (see Figure 2) · Displacement hull powerboat--Locate 1/3 aft LWL and 150­300mm (6­12") off the centerline on the side of the hull where the propeller blades are moving downward. · Planing hull powerboat--Mount well aft, on or near the centerline, and well inboard of the first set of lifting strakes to insure that the transducer is in contact with the water at high speeds. Mount on the side of the hull where the propeller blades are moving downward. Step-hull--Mount just ahead of the first step. active face Figure 3. Establishing a performance baseline--M260 shown 2 AIRMAR ® A B C Figure 4. Testing the transducer at the selected location--M260 shown Observe the echosounder's performance and compare it to the baseline. If the performance is close to the baseline, this is a good mounting location. If the test reading differs markedly from the baseline, you will need to find another location to install the transducer. Caution: Do not mark or cut the shortest side of the tank. 2. Holding a carpenter's level even with the lower corner of an angled side of the tank, draw a level line with a pencil. Connect the two lines along the tallest side of the tank, being sure the line is level. This will be your cutting guideline. Note: If there is no reading or it is erratic, the transducer may be positioned over coring which is absorbing the acoustic energy. If no other location is available, check with the boat manufacturer to be certain coring is present. Warning: Always wear safety goggles and a dust mask. 3. Before cutting the tank, be sure the tallest side will be closest to the centerline (keel) of the boat after the tank is installed. Using a saw, cut the three sides of the tank along the guideline that you have drawn. It may be necessary to further shape the tank to the hull to ensure a liquid tight bond. After the tank has been cut, wrap the cork liner around the inside of the tank (see Figure 6). Butt the sides of the liner along the center of the tallest side of the tank. Note: There may be a gap between the edges which will not affect performance. Holding the cork liner 6mm (1/4") below the top of the tank, trace the bottom edge of the tank onto the liner with a pencil. [. . . ] Refer to your echosounder owner's manual to connect the transducer to the instrument. Installing the Transducer 1. After the fiberglass resin or silicone sealant has cured around the tank, insert the cork liner (see Figure 7). Following the manufacturer's directions for use, pour mineral oil or propylene glycol into the tank until it covers the exposed hull inside the tank. Before installing the transducer, wipe it clean of any lubricant that was used in testing the location. Replacement Transducer & Parts Obtain replacement parts from your marine dealer or instrument manufacturer. [. . . ]