JRC JLN-650 User manual

INSTRUCTIONINSTRUCTION
MANUALMANUAL
JLNJLN-650/652650/652
DOPPLER CURRENT METERDOPPLER CURRENT METER
ISO 9001, ISO 14001 Certified
NOV. 2016 Edition 4
Not use the asbestos
CODE No.7ZPNA3204D
For further information,contact:
URL Head office : http://www.jrc.co.jp/eng/
Marine Service Department
: [email protected]
: [phone]
e-mail
One-call

ii

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 service,
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.
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.
7ZPNA3204D

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.
(c) Check for respiration by bringing your face or the back of your hand to the 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.

☆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.
③
(3) Blowing air into the patient's lungs.
Blow air into the pati
ent's lungs until
chest is seen to rise. The 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-aide 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-aides are available, while one person performs a cardiac massage 15 times,
and 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.
Fig.2 Cardiac massage
①
③
②
④

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Preface
●For the best operation and performance results, read this manual thoroughly
before use.
●Keep this manual in a convenient place for future reference.
Make use of this manual when experiencing operation difficulties.
●The information in this manual is subject to change without notice at any
time.
Thank you for purchasing the JRC JLN-652 Doppler Current Meter.
This unit has the following features;
●Maximum 50 layers sequential current measurement
●Wide measurement depth range (up to 100m from 2m under the hull)
●Advanced bottom tracking performance (max 250m)
●Multiple display modes available
●Flexible black box configuration for easy installation
●Enhanced interface built-in

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●Before Operation●
Pictorial Indication
Various pictorial indications are included in this manual and are shown on this
equipment so that you can operate them safely and correctly and prevent any
danger to you and / or to other persons and any damage to your property
during operation. Such indications and their meanings are as follows.
Please understand them before you read this manual:
This indication is shown where any person is supposed to
be imminent of danger to which the person owes the death
or the serious injury if this indication is neglected and this
equipment is not operated correctly.
This indication is shown where any person is supposed to
be in danger of being killed or seriously injured if this
indication is neglected and this equipment is not operated
correctly.
This indication is shown where any person is supposed to
be injured or any property damage is supposed to occur if
this indication is neglected and this equipment is not
operated correctly.
Examples of pictorial indication
The △mark represents CAUTION (including DANGER and WARNING).
Detailed content of CAUTION (“Electric Shock” in the example on the
Electric left.) is shown in the mark.
The mark represents prohibition.
Detailed content of the prohibited action (“Disasse
mbling Prohibited” in
Disassembling the example on the left) is shown in the mark.
The ●mark represents instruction.
Detailed content of the instruction (“Disconnect the power plug” in the
example on the left) is shown in the mark.
Warning label
There is a warning label on the top cover of the equipment.
Do not try to remove, break or modify the label.
WARNING
CAUTION
DANGER

iii
●Precaution upon Equipment Operation●
Never attempt to check or repair the inside of the equipment.
Checking or repair by an unqualified person may cause a fire or an electric
shock.
Contact our head office, or a nearby branch or local office to request servicing.
Electric shock prevention by high voltage unit
①There is a part where a high voltage is used, and maintain and check after
turning off the power switch without fail when you check the inside.
②Wash the salinity of the hand and drop it when you check. Moreover,
change it for the dry one when the work clothes and shoes, etc. have been
wet.
③It loudly informs everyone of it without panicking, and there must be danger
that I also get an electric shock when touching directly, and the power
switch must be cut or it begins must to help by cutting the board, and it must
revive afterwards when you discover the person who got an electric shock
by any chance by artificial respiration and a general technique.
Do not place a glass or cup containing water, etc., or a small metal object on this
equipment.
If water or such object gets inside, a fire, an electric shock, or a malfunction may occur.
Do not operate pulling out the power plug or do not switch by a wet hand.
It may cause the electric shock.
Do not damage, and process the power cable. A heavy thing is put, heated, pulled or is
bended strongly, and moreover, the power cable may be damaged, and it may cause a
fire and the electric shock.
Neither installation of the transducer nor maintain it on the water.
It may cause the underwater fall and the flood.
In case water or a metal object gets inside the equipment, turn off the power
immediately, unplug the power supply cable from an electric outlet, and contact our
head office, or a nearby branch or local office to request servicing.
Keeping the equipment in operation under such condition may cause a fire, an electric
shock or a malfunction.
DANGER

iv
In case you find smoke, strange smell or unusual heat coming from the
equipment, turn off the power immediately, unplug the power supply cable from
an electric outlet, and contact our head office, or a nearby branch or local office
to request servicing.
Keeping the equipment in operation under such condition may cause a fire or
an electric shock.
Caution of installation location
①Avoid the use of this device in the place where direct sunshine strikes into the
equipment for a long time and the temperature become 50℃or more.
②Do not put this device on an unstable place like on the shaking stand and
the inclining place, etc. The device might fall, topple, and it may cause the
injury and the breakdown.
③Avoid use in a place where the spindrift is hit directly and a humid place.
④Do not put this coolant condition device into the high temperature room
suddenly. The high voltage might cause the leak doing and the breakdown
by the dewfall. Use it after leaving about 30 minutes for this case.
Caution of a ship bottom and equipment check
①Connect the ground lead with the ground terminal surely at the installation.
When breaking down and leaking electricity, it might cause the electric
shock.
②Remove the power cable correctly. The code might be damaged when
power cable is forcibly pulled, and it may cause a fire and the electric shock.
③Do not turn on the power supply of this device when the ship goes up to the
land (like dry dock). It might cause the transducer etc. to break.
④Turn OFF the power switch of this device without fail for safety, and remove
the power cable when you do not use it for a long time. It might cause a fire.
⑤Do not strongly wipe with a dry cloth when you clean the screen. Moreover,
do not use gasoline nor thinner, etc. It may cause to hurt the surface of the
screen.
Work by two people or more when you exchange LCD. It might be dropped
when exchanging alone and it may cause the injury.