Phonak Nathos User manual

In-the-ear
hearing systems
User Guide

2
1. Welcome 4
2. Important information:
Please read before operating your hearing
system for the first time 6
Hazard warnings 6
Information on product safety 7
3. Hearing system description 10
4. Step-by-step instructions for using
the hearing system 13
Step 1. Getting to know your hearing system 13
Step 2. Battery preparation 15
Step 3. Inserting the battery 16
Step 4. Turning on the hearing system 16
Step 5. Inserting the hearing system 18
Step 6. Adjusting the volume control
in the ear 20
Step 7. Selecting the hearing program
in the ear 21
Contents

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Step 8. Removing the hearing system 22
Step 9. Turning off the hearing system 24
Step 10. Changing the battery 24
5. Care and maintenance 25
6. Troubleshooting 28
7. FM systems 30
8. Serial Number & Fitting Date 31
9. Information and explanation of symbols 32

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1. Welcome
Your new hearing system is a premium Swiss quality
product. It was developed by Phonak, one of the
world‘s leading companies in hearing technology. Your
hearing system offers the most modern digital hearing
technology currently available on the market.
Phonak has implemented this hearing technology into
hearing systems that are simple and easy to use. Many
automatic functions offer maximum sound quality,
the highest speech clarity, and optimal hearing comfort
in almost all hearing situations. We are convinced
that the outstanding performance of your hearing system
will provide valuable benefits to your daily life.
Please read these user instructions thoroughly in order
to benefit from all the possibilities your new hearing
system has to offer. With proper use and care, you will
be able enjoy your hearing system for many years to
come.

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If you have any questions, please consult your hearing
care professional.
Phonak - life is on www.phonak.co.uk
0459

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Please read the information on the following pages
before using your hearing system.
2.1Hazard warnings
Use only hearing systems that have been specially
programmed for you by your hearing care pro-
fessional. Other systems may be ineffective and
may, in certain cases, damage your hearing.
Changes or modifications to the hearing system that
were not explicitly approved by Phonak are not
permitted. Such changes may damage your ear or
the hearing system.
Hearing system batteries are toxic if they are
swallowed! Keep out of reach of children and pets.
If batteries are swallowed, consult your medical
practitioner immediately!
2. Important information

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Hearing programs in the directional microphone
mode reduce background noises. Please be aware
that warning signals or noises coming from behind,
e. g. cars, are partially or entirely suppressed.
The hearing system contains small parts which can
be swallowed by children.
External devices may only be connected if they have
been tested in accordance with corresponding IEC
standards. Only use accessories approved by
Phonak AG.
2.2 Information on product safety
Never immerse your hearing system in water!
Protect it from excessive moisture. Always remove
your hearing system before showering, bathing,
or swimming.

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Protect your hearing system from the heat (never
leave it near a window or in the car.) Never use
a microwave or other heating devices to dry your
hearing system. Ask your audiologist about suitable
drying methods.
When you are not using your hearing system, leave
the battery compartment open so that any moisture
can evaporate. Make sure that you always completely
dry your hearing system after use. Store the hearing
system in a safe, dry and clean place.
Do not drop your hearing system! Dropping onto a
hard surface can damage your hearing system.
Always use new batteries for your hearing system.
Your audiology department can advise you on where
old batteries should be disposed of.
2. Important information

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Remove the battery if you are not using your hearing
system for a long period of time.
X-ray radiation (e. g. CT scans, MRI scans) may
adversely affect the correct functioning of your
hearing systems. We recommend that you remove
them before undergoing X-ray procedures and
keep them outside the room.
Do not use your hearing system in areas where
electronic equipment is prohibited.

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The following user instructions describe two hearing
system models: ITC/HS models that are situated in
the ear canal or in the bowl of the ear, and FS models
that are situated only in the bowl of the ear.
On the following pages use the labeled drawings to
identify the hearing system that you use.
Please note: specific functions described on the
following pages may not be included in your model
because some model features are optional.
Your audiologist will be able to tell you what size
battery you need for your hearing system.
3. Hearing system description

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ITC/HS-model
aCustom made shell
bReceiver (sound outlet) and wax protection system
cBattery compartment with ON/OFF switch
dProtected microphone inlet
eProgram switch (optional)
f Right or left indicator (right=red, left=blue)
gVolume control (optional)
hVent
a
b
c
e
d
h
g
f

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FS-model
aCustom made shell
bReceiver (sound outlet) and wax protection system
cBattery compartment with ON/OFF switch
dProtected microphone inlet
eProgram switch
f Right or left indicator (right=red, left=blue)
gVolume control
hVent
3. Hearing system description
a
bc
e
d
g
h
f

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The following chapter provides step-by-step instructions
on how to use your hearing system. Please follow these
steps carefully. In the drawings, the parts that are parti-
cularly important for each step are shown in green.
Step 1. Getting to know your hearing system
Take the hearing instrument in your hand and try out
the hearing system controls. This will make it easier
for you to feel for and operate the controls later on
when wearing the hearing system.
4. Step-by-step instructions for using
the hearing system

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4. Using the hearing system
Turn the volume control to change the volume (Fig 1a).
left ear right ear
The direction you have to turn the volume control
when wearing the system in the ear is shown in step 6
in this section.
Fig. 1a
louder
softer
louder
softer

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In order to change a hearing program, press the
program switch displayed (Fig. 1b).
Step 2. Battery preparation
Remove the protective foil from the new battery (Fig. 2).
Wait for two minutes before inserting to activate the
battery.
Fig. 1b
Fig. 2

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Step 3. Inserting the battery
Take the hearing system in your hand (Fig. 3a) and
open the battery door. Insert the battery so that you
see the + symbol on the battery (Fig. 3b).
Step 4. Turning on the hearing system
Switch on the hearing system by closing the battery
compartment (Fig. 4).
Fig. 3a Fig. 3b
Fig. 4
4. Using the hearing system

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Open and close the battery compartment gently
and carefully.
Check if you feel resistance when closing the
battery compartment. Check to make sure the
battery is correctly inserted and in the correct
direction. If the battery is inserted the wrong
way, the hearing system will not work and the
battery compartment can be damaged.
The hearing system is now switched on. It can take up
to 15 seconds before it starts.
(When you wear the hearing system, you will hear an
acoustic signal).

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Step 5. Inserting the hearing system
This step shows you how to correctly insert the hearing
system.
Each hearing system is individually programmed
for your right or left ear. For the first step
identify right and left so you will be able to insert
your hearing system in the correct ear.
Step 5.1 Identifying the hearing systems for the right
and left ear
The colour mark is located on the shell (model text is
printed in red or blue):
right = red
left = blue
Fig. 5a
4. Using the hearing system

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Step 5.2 Inserting the hearing system (all models)
With your right hand, take your hearing system for the
right ear (red mark on the hearing system, see step 5.1)
between your thumb and forefinger (Fig. 5b).
Insert the tip of the hearing system into the ear canal
(see the part circled in green in Fig. 5b). Carefully pull
on your earlobe and push the hearing system into the
correct position. Ensure that it is positioned securely. In
the beginning, please use a mirror to check.
Fig. 5b

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You have now successfully inserted the right hearing
system. Now insert your left hearing system in the
same way (marked in blue, see step 5.1)
Step 6. Adjusting the volume control in the ear
To increase the volume turn the volume control
forward. To decrease it, turn the volume control
backward using your forefinger (Fig. 6).
left ear right ear
Fig. 6
louder
softer
louder
softer
4. Using the hearing system