BTE User guide

BTE User guide
User Guide
Digital Behind-the-Ear
hearing instrument
SA70-D Open
SA70 Open
Thank you for selecting an Interton hearing system. We are proud of our hearing products and are
confident you have chosen one of the best products available. Please familiarize yourself with the
information in this guide. It contains important instructions for proper use and care, technical performance information, and other general information about your hearing system. Your hearing system
has been adjusted to your particular hearing loss. Your hearing healthcare professional will explain
these adjustments and the special features of your particular model.
Becoming Accustomed to Amplification
While purchasing a hearing system is a major step, it is only one step in a process toward more
comfortable hearing. Successfully adapting to the amplification your hearing system provides takes
time and consistent use.
You will enjoy more benefits from your Interton hearing system by taking the following actions:
• Wear the system regularly in order to get comfortable with using it.
• Begin by wearing your system for short periods of time in quiet environments.
• As you get more comfortable with the system, increase the wearing time and wear your hearing
system in multiple types of listening environments.
It may take as long as several months for your brain to get used to all the “new” sounds around you.
Following these suggestions will give your brain time to learn how to interpret amplification and
increase the benefits you get from using an Interton hearing system.
Your Hearing System On/Off Function Stand-By Mode Volume Control Changing Memory Programs Dual Microphone System Proper Placement in the Ear Removal Recognising left and right Instrument Using the Telephone while
wearing your hearing system Using the Telecoil Cellular Phone and
Hearing Instrument Compatibility Using Assistive Listening Systems Audio Input Removing/Inserting the Battery Low Battery Warning Battery safety 4
Maintenance and cleaning
Cleaning the Earmould Replacing the Tube Cleaning the Thin Tube and Dome Earwax Management When the Hearing System Is Not in Use Things that Can Damage Your
Hearing System Moisture Temperature Extremes Rough Treatment Corrosive Substances General Warnings Solving Small Problems General Precautions Hearing Instrument Identification Repairs Technical Specifications Notes
Plastic tube
Front microphone
Rear microphone cover
(only SA70-D)
Volume Control
Program button
Battery door
START BTE Hearing Instrument (SA70-D, SA70)
Front microphone
Rear microphone cover
(only SA70-D open)
Volume Control
Thin tube
Program button
Mini dome
Battery door
START BTE Hearing Instrument with Thin Tube (SA70-D Open, SA70 Open)
Front microphone
Plastic tube
Rear microphone cover
(only SA80-D)
Volume Control
Program button
START Power BTE Hearing Instrument (SA80-D, SA80)
Battery door
and On/Off switch
On/Off Function
The door to the battery compartment serves as the On/Off
switch for your hearing instrument. When the door is fully
closed, the instrument is on. To turn the instrument off, press
the tab on the base of the instrument with your fingertip until
the battery door snaps partly open, then put your fingernail
under the nail grip and pull gently to open it completely.
Tip: To reduce battery consumption,
turn the instrument off when it is not in use.
switch off the instrument
Stand-By Mode
Stand-by mode reduces battery consumption since only a small amount of power is
used. When in stand-by mode, the hearing instrument will not deliver sound to the ear.
If your hearing instrument has a Memory Selector, you can put the instrument into standby mode by holding down the Memory Selector for five seconds. You will hear a series
of beeps, indicating that the instrument is now in stand-by mode.
To return to functional mode, simply press the Memory Selector once.
Volume control
Your instrument has a fully automatic volume control. Therefore,
it should not be necessary to control the amplification (volume)
However, the volume control wheel provides you with the ability
to adjust the amplification to your liking.
Use your index finger to adjust the volume, moving the wheel
horizontally or upwards to increase and downwards to decrease
the volume.
During the fitting of the instrument, your hearing care practitioner will have chosen an
optimal volume setting for you. When switching the instrument on, the volume will have
this optimal setting.
• To prevent unintended usage by paediatric or physically or mentally challenged users,
the volume control must, if enabled, be configured to only provide a decrease of the
sound generator output level.
• If you prefer not to use the volume toggle your hearing care practitioner can switch the
volume control off
Changing Memory Programs
Hearing instrument memories are used to store settings optimal
in different listening situations. Your hearing healthcare professional may have programmed multiple memories into your hearing
instruments to accommodate your lifestyle needs.
For future reference, ask your hearing health professional to fill in
your memory program information on the notes page at the back
of this guide.
Whenever the hearing instrument is turned on, Memory 1 is automatically activated.
Memories can then be selected by pushing the Memory Selector button on the instrument.
Your hearing instrument may have up to 3 programs. Special tones will indicate which
memory has been activated. One tone will sound when Memory 1 is activated, two
tones will sound when Memory 2 is activated, etc. Memories are always activated in
sequence, for example, with three memories: 1 to 2, 2 to 3, 3 to 1.
Consult your hearing healthcare professional if the memory programs in your hearing
instruments need to be reconfigured.
Dual microphone system (for SA70-D, SA80-D)
If you want to listen to a person in a noisy environment, the microphones in your hearing
instrument can help you to concentrate on the speech. If the microphones are in the directional mode the background noise will be attenuated. In this mode the sounds in front
of you will be enhanced, so you can hear better the speech of the person you look at.
Your hearing care practitioner can program the device in the required modes.
Proper Placement in the Ear
Inserting the Dome and BTE Instrument:
• Hold your hearing instrument by the tube, right where it bends.
• Hang the instrument over the top of your ear so that the housing portion is behind
your ear and the dome is in front.
• Push the dome into your ear until it sits comfortably and the tube lies flat against
the side of your head. Note: When the dome is placed correctly, you should not see
the tube sticking out when looking directly into a mirror.
• If you have not already turned on your hearing instrument, switch it on by closing
the battery door.
If you need further help, your hearing healthcare professional will be glad to show you
how to insert your hearing instrument correctly.
Note: If your hearing instrument irritates your ear in any way and prevents you from
wearing your hearing instrument, please contact your hearing healthcare professional.
Never attempt to modify the shape of your hearing instrument yourself.
Inserting the Standard Earmould and BTE Instrument:
• Put your earmould between your thumb and index finger
and position its “point” in your ear canal. - Now, slide the
earmould all the way into your ear with a gentle, twisting
• Place the hearing instrument behind your ear. Move the
earmould up and down and press gently to ensure it is
positioned correctly in the ear. You will feel when the earmould is positioned correctly.
• If you have not already turned on your hearing instrument,
switch it on by closing the battery door.
Tip: Insertion of the earmould can be easier if you gently pull
your ear backward with your other hand. Opening and closing
your mouth while inserting may also be helpful.
To remove the hearing instrument from your ear, simply pull the tube outward with
your thumb and forefinger. Consult your hearing healthcare professional if you have
difficulty removing the hearing instrument.
Recognising left and right instrument
If you have two hearing instruments, they may be tuned differently. One for your left ear,
the other for your right. Do not swap them. Please pay attention to this when cleaning,
storing and inserting the instruments.
• You might want to ask your hearing care practitioner to mark your instruments with a
coloured Left and Right indication:
Left is blue and Right is red.
Using the Telephone While Wearing your Hearing System
Close proximity to a telephone can sometimes cause hearing instruments to make a squealing sound, also known as feedback.
To reduce the potential for this problem, your system is equipped
with feedback suppression, which greatly reduces the chance of
feedback. Further measures to avoid feedback include position­ing
the phone close to the hearing instrument, but not directly on the
instrument. If there is feedback, it may take a few seconds for
the instrument’s signal processing to adapt. This technique may
require practice.
Using the Telecoil
Your hearing system has a built-in telecoil, and your hearing healthcare professional may
have programmed one of your listening programs to take advantage of it. When a telecoil
is activated, the hearing instrument will only detect and process sounds from coming
from the telephone.
To activate the telecoil you will need to use the memory selector to activate the appropriate memory.
To use the telephone while the telecoil is activated, position the telephone near, but not
directly on the instrument. You may need to re-position to find the best reception.
Cellular Phone and Hearing Instrument Compatibility
Hearing instrument performance with cellular phones may vary based on the individual
hearing system or the cell phone being used. If your hearing system and cell phone are
not compatible you may experience a buzzing or clicking noise while using the two in
conjunction. If this is the case with your current hearing system and cell phone, consult
with your hearing healthcare professional to see if there are options to improve the sound
Measures you can take to prevent this situation:
• When purchasing a hearing system, be sure to test it with your existing phone to
determine compatibility.
• When shopping for a new cell phone, be sure to test it with your hearing system
before purchasing.
For additional guidance, please consult your cell phone provider.
Using Assistive Listening (Tele-Loop) Systems
Many gathering places are equipped with assistive listening (tele-loop) systems, for
example, in schools, theaters and houses of worship. To take advantage of a tele-loop
system, select the telecoil program. When the telecoil program has been selected,
you will be able to hear a clean sound signal via the tele-loop system. If the instrument goes dead in the telecoil program, this may be because the loop system is not
If a school, theater or house of worship does not have a tele-loop system, try and sit
as close as possible to the front and use one of the microphone programs.
Audio input (for SA80-D, SA80)
Your hearing instrument is equipped with a direct audio input
facility. Direct audio input allows direct connection of sound
sources, a radio, television or even school equipment, to your
hearing instrument. Often, this will improve sound quality.
• The sound source is connected to your instrument with a
cable and an audio shoe.
• The instrument automatically detects the direct audio input
source. The direct audio input supports the systems for the wireless use as well.
• In this program you will hear no sounds from the microphone, therefore most
en­vironmental sounds will be lost. If you wish, your hearing care practitioner can
change the setting in such a way that you hear the microphone and the direct audio
input simultaneously.
Safety regulations
External equipment, connected to the mains and to the audio input must comply with
these safety regulations: IEC-65, IEC-601 or comparable.
Removing/Inserting the Battery
Open the battery compartment completely by press­
ing the tab on the base of the instrument with your
fingertip until the battery door snaps partly open, then
put your fingernail under the nail grip and pull gently to
open it completely. Remove the used battery from the
battery compartment.
Tip: Hold the instrument over a table or a soft surface
in case the battery falls out.
Remove the film from a new battery and place the
new battery into the battery compartment, matching
the plus (+) sign on flat side of the battery to the plus
sign in the battery compartment. A magnifying glass
and good lighting may be helpful in seeing these small
markings. Close the battery compartment tightly but
do not use force - it should close very easily.
Your hearing system should now be on.
Tip: Removing the battery when the instrument is not being worn will help prevent corrosion of the battery contacts. Corrosion can decrease efficiency, causing excessive
battery consumption.
Note: A weak battery will cause reduced system performance.
Your Hearing Instrument uses a Battery Size 13.
Low Battery Warning
Your hearing system features a Low Battery Warning function to give you notice when
your battery is getting low. The instrument will signal when the battery power decreases to a certain level, and will continue beeping until the instrument automatically
switches off.
Tip: It is helpful to keep spare batteries with you in case you need them.
Battery Safety
• Dispose of used batteries properly.
• Keep batteries out of reach of children or persons with diminished mental capacity.
• Keep batteries away from pets.
• Do not place batteries in your mouth. If a battery has been swallowed, consult a physician immediately.
To prevent batteries from leaking or exploding:
• Do not expose batteries to temperature extremes.
• Do not dispose of batteries in fire.
• Do not attempt to recharge batteries which are not specifically designated rechargeable, or reverse a battery’s polarity.
Maintenance and cleaning
Earwax (cerumen) can accumulate in and on the earmould during use. Therefore, clean
your earmould regularly. Failure to do so can lead to an accumulation of earwax, impairing sound quality.
Keep your hearing instrument clean and dry. Wipe the case with a soft cloth or tissue
after use to remove grease or moisture. You should avoid exposing your instrument
directly to moisture such as rain or water from the shower. If your instrument does
get wet or if it has been exposed to high humidity or perspiration, it should be left to
dry out overnight with the battery out and the battery compartment open. It is also a
good idea to put them in a sealed container together with a drying agent (dessicator)
overnight. Consult your hearing care professional as to which drying agent to use.
Storing your instrument
When you are not using your instrument, keep or transport it in the box supplied.
Leave the battery door open. Keep your instrument in a dry place, not in a bathroom or
other humid place. Alternatively, you could store the instrument in a dessicator available from your hearing care practitioner.
Cleaning the earmould
• First, remove the tubing and earmould from the hearing
instrument. Keep left and right instrument separated.
• Remove earwax with the cleaning brush and a soft cloth.
If needed, use a mild solution of soft soap and water or a
special cleaning solution. Ask your hearing care practitioner
for detailed instructions.
• Rinse the earmould with water.
Note: Do not use water or other liquid on the hearing instrument itself.
pull earmould
and device apart
• Dry the earmould with a cloth.
• Let the earmould dry overnight on a tissue or blow possible
water drops from tubing and earmould. A special device is
available for this from your hearing care practitioner.
• Ensure that the earmould and tubing are completely dry before attaching them to the hearing instrument. Take care with
left and right instruments, check the figures on page 16.
Replacing the tube
Ask your hearing care practitioner to replace the tubing from the instrument to the
earmould if it turns stiff or changes colour.
Cleaning the Thin tube and dome
The thin tube feeds the amplified sound from the hearing instrument into the ear. It
is important that the thin tube and the dome fit correctly into your ear. If the thin tube
or the dome irritate your ear in any way and prevent you from wearing your hearing
instrument, please contact your hearing care professional. You should never attempt
to modify the shape of the thin tube yourself.
The thin tube and the dome should be cleaned regularly.
Remove the thin tube from the instrument before cleaning by
unscrewing it. Use a damp cloth to clean the thin tube and
dome on the outside and use the black cleaning rod to “push”
any debris out of the sound tube. The cleaning rod should be
inserted where the thin tube attaches to the instrument and
pushed all the way through the thin tube and out through the
dome. It is not recommended to submerge or rinse the thin
tube and dome with water, as there is a risk that a water drop may become lodged in
the thin tube. If this should occur, it will prevent sound coming through the thin tube,
and may be harmful for the instrument’s electronics.
The thin tube and dome should be changed every third month or sooner if the thin tube
becomes stiff or brittle. We recommend that you have your hearing care professional
change the dome for you. If your hearing care professional instructs you to change
the domes yourself, make sure that they are securely fastened to the thin tube before
inserting them in your ear. A failure to change the domes in accordance with the instructions could result in injury.
Earwax Management
Hearing systems are susceptible to damage or poor performance from earwax. If
appro­priate, your hearing health professional will have selected and installed an earwax management system on your instruments.
You will need to discuss with your hearing healthcare professional how to use the
particular earwax management system selected. For future reference, enter this information on the service page at the back of this guide.
Note: If the hearing system seems to have lost power because it is not loud enough
and changing the batteries does not help, the filters may be blocked and need to be
When the Hearing System Is Not in Use
To protect your hearing system when it is not in use, always store it inside its carrying
case. When storing the hearing system for a prolonged period of time, remove the
battery to prevent damage from corrosion.
Things that Can Damage Your Hearing System
Keep in mind that some of your day-to-day routines require that you remove your
hearing system.
Avoid getting moisture in the hearing system. It should not be worn in the shower,
bath, or sauna. Do not submerge the instrument in water or other liquids.
If perspiration or humidity is an issue, you may find it beneficial to use a drying kit
specially designed for hearing systems. To prevent damage, only use drying kits that
are approved by your hearing healthcare professional.
Temperature Extremes
Do not expose your hearing system to extremes of heat.
Some typical situations to avoid:
• Do not wear your hearing system when using a hair dryer.
• Do not leave your hearing system in your car or in direct sunlight.
• Do not attempt to dry your hearing system in any device other than an approved
drying kit.
Rough Treatment
Protect your hearing system from rough treatment by storing it in the provided carrying
case when it is not in use.
Corrosive Substances
• Non-Approved Cleaning Solutions - If you use cleaning products, only use those
recommended by your hearing healthcare professional, as housing can be damaged
by certain cleaning agents such as mineral acids, hydrocarbons (benzol), esters,
alcohols and ketones.
• Debris from Daily Hygiene Routines - It is suggested you not wear your hearing
system while applying the following: hairspray, cosmetics, colognes, perfumes,
sunscreens, insect repellent, etc.
General Warnings
Hearing instruments can be dangerous if improperly used.
• Do not leave your instrument in the sun, near an open fire or in a hot, parked car.
• Do not wear your instrument while showering, swimming, in heavy rain or in a
moist atmosphere such as steam bath or sauna.
• Should your instrument become moist, put it in a dessicator. Your hearing care professional will be happy to counsel on this.
• Remove your instrument when applying cosmetics, e.g. perfume, aftershave, hair
spray, suntan lotion.
• Instruments should be used only as prescribed by your hearing care professional.
Incorrect use may result in sudden and permanent hearing loss.
• Do not allow others to use your instrument. It may cause permanent damage.
• Instrument usage by children or mentally challenged persons should be supervised
at any time.
• Do not take your instrument into rooms where you receive treatment with X-rays or
• Wearing an instrument might cause an increased production of earwax. In rare
cases, the anti-allergenic materials may cause skin irritation. If so, or if in doubt,
consult your physician or ENT.
Warning to the hearing care practitioner
Special care should be exercised in selecting and fitting a hearing instrument(s)
whose maximum sound pressure level exceeds 132 dB SPL with an IEC 60711: 1981
occluded ear simulator, because there may be a risk of impairing the remain­ing hearing
of the hearing instrument user.
Solving small problems
Your Interton instrument is a reliable one. In case of minor problems or malfunctions,
• Is the Dome or the Earmould inserted correctly?
• Is the volume very loud?
• Are you holding your hand or an object (e.g. a hat) too
close to an instrument?
• Is you ear full of wax?
No sound
• Is the instrument switched on?
• Is the instrument switched on the telecoil program?
• Is there a battery in the instrument?
• Is the battery still good?
• Is you ear full of wax?
you may be able to solve them yourself.
Put it in again
Reduce it
Move your hand away or create some more space between
the instrument and the object
Visit your physician
Switch it on
Switch it to the microphone program
Insert a battery
Replace it with a new one
Visit your physician
Sound is distorted,
spluttering or weak
• Is the battery dead?
• Is the battery dirty?
• Did your instrument get moist?
Battery drains
very quickly
• Did you leave your hearing instrument
switched on at night?
• Is the battery old?
• Replace it with a new one
• Clean it or use a new one
• Use a dissecator
• Always switch off the instrument at night
• Check the date on the battery packaging
General Precautions
• Consult a physician if you find a foreign object in your ear canal, if you experience
skin irritation or if excessive ear wax accumulates with the use of the instrument.
• Different types of radiation, e.g. from NMR or CT scanners, may damage the instrument. Therefore, do not wear the instrument during these or other corresponding
scanning procedures. Other types of radiation (burglary alarms, room surveillance
systems, radio equipment, mobile telephones, etc) will not damage the instrument.
They could, however, momentarily affect the sound quality or create strange sounds
from the instruments.
• Warning: Do not wear the instrument in mines or other explosive areas, unless
those areas are certified for hearing instrument use.
• Keep the instrument away from children under the age of 3 as it contains small
parts which may present a choking hazard.
Hearing instrument identification
Your hearing care professional place a check mark in the below table to identify the
model you have received.
Model received
Power BTE
Power BTE
SA70-D Open BTE
SA70 Open
Hearing care professional
Serial number Right:
Serial number Left:
If your Interton hearing instrument malfunctions, it must be repaired by a qualified
technician. Do not attempt to open the case of the hearing instrument since this would
invalidate the warranty. If your Interton hearing instrument requires service, please contact your hearing care professional for assistance.
Technical Specifications
Max. Output dB SPL according to IEC-118-7
134 dB
134 dB
SA70-D Open
124 dB
126 dB
SA70 Open
124 dB
126 dB
Worldwide headquarters
Interton A/S | Lautrupbjerg 7 | DK-2750 Ballerup | Denmark
Tel.: +45 45 75 1111 | Fax: +45 45 75 1119 |
17174900-GB.09.07. Rev. A
Any issues relating to the EU Medical Device Directive
93/42/EEC should be directed to Interton A/S.
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