Furuno CH-270 Manuel du propriétaire

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.

CH270 Searchlight Sonar

Please read this supplement to the CH270 Manual first.

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 assembly installation and adjustment instructions

8 Motion sensor mounting, location and longer interconnect cables

8 Soundome cover removal and oil installation reminder

9 Checking soundome when in drydock

Please feel free to contact us with any questions that you may have.Additional information such as

this may be found on our web site www.Furuno.com.

This material is provided to augment, not replace, what is found in your CH270 manuals.

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 control head installation & operation been checked? Yes No

Is the unit grounded properly? Yes No

Black Box System – VGA Display Check List

Are all cables and connections tight & strapped? Yes No

Does the monitor display the correct color palette? Yes No

Are the IF8000 dip switches set correctly? Yes No

Is NMEA data connected and activated? Yes No

What NMEA devices are connected:

Has CH252 control head installation & operation been checked? Yes No

Is the unit grounded properly? Yes No

CH273 Transceiver Unit Check List

Are all cables and connections tight & strapped? Yes No

Check and note actual input voltage

Is the unit grounded properly? Yes No

Motion Sensor or Incinometer Check List

Which sensor is being used, BS704 or MS100? BS704 MS100

Where is the sensor located?

Has the sonar been programmed to look for the sensor? Yes No

Sonar Tube Installation Check List

Was a Furuno supplied sonar tube used? Yes No

If not, what was the ID of the sonar tube used?

What is the actual length of the sonar tube?

Where is the sonar tube mounted?

Is the sonar tube on or off the vessels centerline? On Off

Has a sonar tube air venting system been installed? Yes No

Has a forward sonar tube fairing been installed? Yes No

Page 1

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 used on shaft threads? Yes No

Has soundome packing sponge been removed? Yes No

Was oil added to the soundome? Yes No

**CAUTION - Do not lay soundome on its side once oil has been added**

Are all the soundome Phillips Head screws tight? Yes No

Have 3 layers of greased cotton packing been used? Yes No

Is the safety clamp installed and tightened? Yes No

Accessories Check List - if applicable

Checked operation of the SC-05WR external speaker? Yes No

Checked operation of the CH256 handheld remote control? Yes No

Sea Trial Check List

Date: Location:

Operator:

Sea conditions:

Maximum detection range for the sea-bottom:

Maximum detection range for fish targets:

Has the sonar picture been checked for alignment? Yes No

Has the auto-retraction feature been checked? Yes No

Have the system manuals been given to the operator? Yes No

Was any hoist movement noted at maximum speed? Yes No

Operator Training

Date: Location:

Trainer:

Training provided for:

Necessary Follow-up

Required for:

When:

Warranty Card Completed and Sent to Furuno USA

Date:

Page 2

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 installation on a fast, planing hull

vessel.When the vessel's bow rises or she is on a plane, you must prevent the hull tube rear wall

from becoming a large water scoop.A simple but effective fairing must be constructed.The fairing

routes (diverts) the water flow away from the tube opening, preventing it from striking the tube's

rear wall.The same principles applicable for bow thruster installations are true for any sonar hull

tube.

Properly sized and shaped, the fairing will minimize turbulence and destructive soundome or shaft

movement. Some vessels may require several fairing size and shape adjustments to be absolutely

successful. Pictures of several typical, successful fairings are attached for your information and use.

A carefully fitted installation will insure you many years of reliable, trouble free CH270 sonar oper-

ation.

Page 4

Page 5

Page 6

Page 7

Please confirm that the narrowest gap between the tank guides

and the retraction tube wall is 0.5mm. Adjust if necessary.

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, the following options are available:

Part number Description

MS1-CBL-15M 15 meter signal cable assembly

MS1-CBL-30M 30 meter signal cable assembly

MS1-CBL-50M 50 meter signal cable assembly

Note:

The MS100 compensates for any vessel pitching and rolling at sea. To properly set itself the

motion sensor must be powered up while the vessel is in a stable condition. This step is easi-

er to accomplish at the dock. Please get in the habit of powering up the entire CH270 system

prior to departing from the dock. This one easy step will ensure proper operation of the

MS100 and enhanced CH270 performance for the duration of the voyage.

Soundome Cover Removal and Replacement

To detach or replace the soundome cover assembly, remove the 8 stainless steel cross

head cap screws.

Once the soundome has been filled with oil, keep it in a vertical position to prevent any

internal seepage. If the soundome assembly has to be removed for repair or shipment, the oil

must always be removed.You may wish to retain the soundome packing material for future

use.

Page 8

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