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CAUTION: Follow the instructions that came with your transducer. To install a Chirp
transducer in a way other than intended by the manufacturer may lead to the transducer
overheating, resulting in transducer failure.
Due to the nature of Chirp technology, Chirp transducers generate more heat than traditional tone-burst
transducers operating at the same frequency. Chirp transducers have heat sinks in their construction to dissipate
heat. Airmar's Chirp transducers have been designed to be installed in specific ways according to the number
and placement of these heat sinks.
Cavity Mount: Keel
Models: CM548, CM549LHW, PM542
Transducer is installed in a cavity in the keel at a cool location away from the engine
compartment. The active face of the transducer is flush with the outside of the hull and in
contact with water.
Cavity Mount: Pocket
Models: CM548, CM549LHW, PM542
Transducer is installed in a cavity in the hull at a cool location away from the engine
compartment. The active face of the transducer is flush with the outside of the hull and in
contact with water.
Welded-tank Mount
Models: CM548, CM549LHW, PM542
Transducer is installed in a water-filled, welded tank outside of the hull. The active face and
sides of the transducer are immersed in water.
AVOID OVERHEATING
Installation Supplement: Chirp Transducers
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Related Manuals for Furuno CM548
Summary of Contents for Furuno CM548
- Page 1 Cavity Mount: Keel Models: CM548, CM549LHW, PM542 Transducer is installed in a cavity in the keel at a cool location away from the engine compartment. The active face of the transducer is flush with the outside of the hull and in contact with water.
- Page 2 OWNER’S GUIDE & INSTALLATION INSTRUCTIONS Cavity or Welded-tank Mount: Multi-beam Sonar & Depth Transducer with Temperature Sensor Chirp Models: CM548, CM549LHW Patent http://www.airmar.com/patent.html Furuno: 165T/265LH-PM488 & (0.24") 165T/275LHW 285mm (11.21") WARNING: The transducer must be professionally installed using accepted practices. The cavity or welded tank must be strong and watertight to reduce the risk of property damage, personal injury, and/or death.
- Page 3 • Planing hull powerboats—Mount well aft, on or near the Measure the gap between the face of transducer and the outside Please contact your Furuno dealer to obtain parts. centerline, and well inboard of the first set of lifting strakes to...
- Page 4 Template CM548, CM549LHW IMPORTANT: Some printers and printer cable settings can alter the size of the template. Verify the template’s size before cutting. cable Place the transducer on the template to be sure it is the exact size.