JRC JFC-180BB Manuel utilisateur

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JFC-180BB

Echo Sounder

Instruction Manual

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7ZPNA4619A i

Cautions for High Voltage

High voltages, ranging from several hundreds to tens of thousands of volts, are used in

electronic apparatus, such as radio and radar instruments. These voltages are totally

harmless in most operations. However, touching a component inside the unit is very

dangerous. (Any person other than authorized service engineers should not maintain,

inspect, or adjust the unit.)

High voltages on the order of tens of thousand volts are most likely to cause instant

deaths from electrical shocks. At times, even voltages on the order of several hundred

volts could lead to electrocution. To defend against electrical shock hazards, don't put

your hand into the inside of apparatus. When you put in a hand unavoidably in case of

urgent, it is strongly suggested to turn off the power switch and allow the capacitors, etc.

to discharge with a wire having its one end positively grounded to remove residual

charges. Before you put your hand into the inside of apparatus, make sure that internal

parts are no longer charged. Extra protection is ensured by wearing dry cotton gloves at

this time. Another important precaution to observe is to keep one hand in your pocket at

a time, instead of using both hands at the same time.

It is also important to select a secure footing to work on, as the secondary effects of

electrical shock hazards can be more serious. In the event of electrical shocks, disinfect

the burnt site completely and obtain medical care immediately.

ii 7ZPNA4619A

Precautions for Rescue of Victim

of Electric Shock

When a victim of electric shock is found, turn off the power source and ground the circuit

immediately. If this is impossible, move the victim away from the unit as quick as possible

without touching him or her with bare hands. He or she can safely be moved if an

insulating material such as dry wood plate or cloth is used.

Breathing may stop if current flows through the respiration center of brain due to electric

shock. If the electric shock is not large, breathing can be restored by artificial respiration.

A victim of electric shock looks pale and his or her pulse may become very weak or stop,

resulting in unconsciousness and rigidity at worst. It is necessary to perform first aid

immediately.

7ZPNA4619A iii

Method of First-Aid Treatment

Precautions for First-Aid

Treatments

Whenever a person is struck by an electrical shock, give the patient artificial respiration

immediately on the spot, unless it is absolutely necessary to move the patient for safety's

sake. Once started, artificial respiration should be continued rhythmically.

(1) Refrain from touching the patient carelessly as a result of the accident; the first-aider

could suffer from electrical shocks by himself or herself.

(2) Turn off the power calmly and certainly, and move the patient apart from the cable

gently.

(3) Call or send for a physician or ambulance immediately, or ask someone to call

doctor.

(4) Lay the patient on the back, loosening the necktie, clothes, belts and so on.

(5) (a) Feel the patient's pulse.

(b) Check the heartbeat by bringing your ear close to the patient's heart.

patient's face.

(d) Check the size of patient's pupils.

(6) Opening the patient's mouth, remove artificial teeth, cigarettes, chewing gum, etc. if

any. With the patient's mouth open, stretch the tongue and insert a towel or the like

into the mouth to prevent the tongue from being withdrawn into the throat. (If the

patient clenches the teeth so tight that the mouth won't open, use a screwdriver or

the like to force the mouth open and then insert a towel or the like into the mouth.)

(7) Wipe off the mouth to prevent foaming mucus and saliva from accumulating.

iv 7ZPNA4619A

Treatment to Give When the Patient Has

a Pulse Beating but Has Ceased to

Breathe

∗Performing mouth-to-mouth artificial respiration - Fig. 1

(1) Bend the patient's face backward until it is directed to look back. (A pillow may be

placed under the neck.)

(2) Pull up the lower jaw to open up the airway. (To spread the airway)

(3) Pinching the patient's nose, breathe deeply and blow your breath into the

patient's mouth strongly, with care to close it completely. Then, move your mouth

away and take a deep breath, and blow into his or her mouth. Repeat blowing at

10 to 15 times a minute (always with the patient's nostrils closed).

(4) Continue artificial respiration until natural respiration is restored.

(5) If the patient's mouth won't open easily, insert a pipe, such as one made of

rubber or vinyl, into either nostril. Then, take a deep breath and blow into the

nostril through the pipe, with the other nostril and the mouth completely closed.

(6) The patient may stand up abruptly upon recovering consciousness. Keep the

patient lying calmly, giving him or her coffee, tea or any other hot drink (but not

alcoholic drink) to keep him or her warm.

Mouth-to-mouth artificial respiration with the patient's head lifted

[1]

(1) Lift the back part of the patient's

head. Support the forehead with

one of your hand and the neck

with the other hand.→[1].

Many patients will have their

airways opened by lifting their

head in this way to ease

mouth-to-mouth artificial

respiration.

[2]

(2) Closing the patient's mouth with

your mouth, press your cheek

against the patient's nose→[2].

Alternatively, hold the patient's

nose with your finger to prevent air

leak

→[3].

7ZPNA4619A v

[3]

(3) Blowing air into the patient's

lungs. Blow air into the patient's

lungs until chest is seen to rise.

he first 10 breaths must be blown

as fast as possible.

Fig. 1 Mouth-to-mouth artificial respiration



Treatment to Give When the Patient Has No

Pulse Beating and Has Ceased to Breathe

∗Performing cardiac massage - Fig. 2

If the patient has no pulse beating, with the pupils open and no heartbeat being heard,

the patient has a cardiac arrest and requires immediate artificial respiration. Continue

this until a medical specialist arrives, and follow his or her directions after that.

(1) Putting one hand on about the lower one third of the patient's ribs and the other hand

over the back of the first, with your elbow fully stretched (with bended elbow, you

can’t press to the extent the patient’s ribs are depressed), apply your body weight to

the hands to press the patient's body until it is depressed about 2 cm (Repeat this

about 50 times a minute). (Cardiac massage)

(2) If only one first-aider is available, perform a cardiac massage about 15 times and

then give mouth-to-mouth artificial respiration 2 times. Repeat this sequence.

If two first-aiders are available, while one person performs a cardiac massage 15

times, the other should give mouth-to-mouth artificial respiration 2 times. Repeat this

sequence. (Combined cardiac massage and mouth-to-mouth artificial respiration

method)

(3) Check the patient's pupils and feel the pulse from time to time. When the pupils are

restored to normal and the pulse begins to beat regularly, stop treating and keep the

patient calm while giving him or her coffee, tea or any other hot drink to keep him or

her warm while watching him or her carefully.

vi 7ZPNA4619A

Fig. 2 Cardiac massage

[1]

[3]

[2]

[4]

7ZPNA4619A vii

Procedure for cardiopulmonary resuscitation (CPR) using the AED

(Automated External Defibrillator)

A person is collapsing.

- Secure the safety of the surrounding area.

- Prevent secondary disasters.

Check for response.

Call while tapping the shoulder.

Breathing

Recovery position

- Lay the injured or

ill person on

his/her side and

wait for the arrival

of the emergency

services.

Not responding

Ask for help.

- Make an 119 emergency call.

Ask to bring an AED.

Listen to the appeal of the

injured or ill person and give

the necessary first-aid

treatment.

Responding

Not breathing

Give 2 rescue breaths; omittable Note(1)

Give CPR.

- 30 chest compressions

Give 2 rescue breaths; omittable Note(

)

Note

(

) Omission of rescue breathing:

If there

is a fear of infection because the

injured or ill person has an intraoral injury,

you are hesitant about giving mouth

-to-

mouth

resuscitation, or preparing the mouthpiece for

rescue breathing takes too long, omit rescue

breathing and proceed to the next ste

Open the airway.

Check for breathing.

Arrival of an AED

- Turn on the power.

- Use the AED by following its voice prompts.

Fitting of the electrode pads, etc.

Automatic electrocardiogram

analysis

- Do not touch the injured or ill

person.

Electric shock is needed.

Electric shock is not needed.

Delivery of electric shock

Resume CPR from chest

compressions by following the

voice prompts of the AED.

When the injured or ill

person has been

handed over to the

emergency services or

has started moaning or

breathing normally, lay

him/her on his/her side

in a recovery position

and wait for the arrival

of emergency services.

When to

stop CPR

A person is collapsing.

- Secure the safety of the surrounding area.

- Prevent secondary disasters.

The AED

automatically

analyzes the

heart rhythm

every 2 min.

viii 7ZPNA4619A

Procedure for Cardiopulmonary Resuscitation (CPR) Using the AED

(Automated External Defibrillator)

1．Check the scene for safety to prevent secondary disasters

a) Do not touch the injured or ill person in panic when an accident has

occurred. (Doing so may cause electric shock to the first-aiders.)

b) Do not panic and be sure to turn off the power. Then, gently move

the injured or ill person to a safe place away from the electrical

circuit.

2．Check for responsiveness

a) Tap the shoulder of the injured or ill and shout in the ear saying, "Are you OK?"

b) It the person opens his/her eyes or there is some response or gesture, determine it as

"responding." But, if there is no response or gesture, determine it as "not responding."

3．If responding

a) Give first-aid treatment.

4．If not responding

a) Ask for help loudly. Ask somebody to make an emergency 119 call and

bring an AED.

• Somebody has collapsed. Please help.

• Please call 119.

• Please bring an AED.

• If there is nobody to help, call 119 yourself.

5．Open the airway

a) Touch the forehead with one hand. Lift the chin with the two fingers of

the middle finger and forefinger of the other hand and push down on the

forehead as you lift the jaw to bring the chin forward to open the airway.

If neck injury is suspected, open the airway by lifting the lower jaw.

Are you OK?

Please call 119.

Please bring an AED.

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