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Please read this supplement to the CH270 Manual first.
CH270 Searchlight Sonar
Important Technical
Installation Information
The following checklist and information sheets are provided to
help you efficiently install your CH270 sonar. If this is a high
speed vessel, please pay careful attention to the tube length and
fairing instructions.
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CH270 Installation Supplement Contents The following checklist and information sheets are provided to help you properly and efficiently install your CH270 sonar. If this is a high speed vessel, please pay careful attention to the tube length and fairing instructions. Page 1-2 Overall installation checklist - Please return a completed copy to Furuno U.S.A. 3 Fiberglass (FRP) sonar tube installation outline drawing 4-6 High speed hull, sonar tube fairing pictures with comment 7 Tank guide asse
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CH270 Installation Check Sheet Vessel Information CH270 System Information Vessel Name: CH270 Model: Type: Use: Serial Number: Length: Registry: Shaft Travel: Operating Speed: Hull Type: System Input Voltage: Dealer Information Dealer Name: Address: City, State, Zip: Installed By: Date: Location: Standard System – MU100C Display Check List Are all cables and connections tight & strapped? Yes No Is NMEA data connected and activated? Yes No What NMEA devices are connected: Has CH252 con
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CH270 Installation Check Sheet - continued CH181 or CH184 Hull Unit Check List Check and note actual input voltage: Are all cables and connections tight and strapped? Yes No Is the unit grounded properly? Yes No Has the soundome been lowered and raised by hand? Yes No Have the shaft guides been adjusted for 0.5mm tolerance? Yes No Does the shaft have a heading mark inscribed? Yes No Is the soundome 1/2" up, in the sonar tube when retracted? Yes No Has epoxy been use
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Sonar tube fairings for high speed vessels Today, many CH270 hull tubes have to be placed in the forward part of the vessel.This location almost guarantees underway turbulence.Although a poor location, space limitations usually make it the only site available for the hull tube and hoist.As the installation manual shows, the best loca- tion is always one third to one half way back from the bow.This is okay, because a bit of prior planning and on - site fabrication will allow a very successful ins
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Page 5
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Page 6
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Please confirm that the narrowest gap between the tank guides and the retraction tube wall is 0.5mm. Adjust if necessary. Page 7
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Motion Sensors, Inclinometers and Longer Interconnect Cables This valuable accessory unit must be mounted correctly to obtain any benefit from it: a) Select a mounting location that is dry and vibration free b) The selected location should be as close to the sonar hoist unit as possible c) Mount the unit level (only compensating for normal vessel trim) d) Line the unit up "fore and aft" accurately e) Mount the unit "right side up" only If a longer interconnect cable assembly is required, th
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Checking Soundome When In Dry Dock When the vessel is dry-docked, check for any signs of corrosion on the Soundome assembly. Find the reason for the corrosion and as necessary attach a zinc plate to the hull unit as an anticorrosion measure.The soundome cover may be cleaned with a household plastic scouring pad, such as “Scotch Brite” pads. Please feel free to call us at (360) 834-9300 or visit us on the web at www.Furuno.com if you have any additional questions. Thank you for purchasing the CH2
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