User Guide - Interton Hearing Aids

User Guide - Interton Hearing Aids
User Guide
Receiver-In-Ear (RIE) Models:
Interton Cosmo
Interton Crisp
Left Hearing Instrument
Serial number
Receiver type
Normal Power
Receiver type
High Power
High Power
Description of when to use
Note: Your hearing system might not support all 4 environmental programmes. Ask your hearing care professional for details.
312 brown
Specific features supported by your hearing system:
St dome
Open fitting air dome
Normal Power
Reciever size
Serial number
Reciever size
Batteri size
Right Hearing Instrument
Power dome
RIE mould
Delayed on-activation . . . . . . . . . . . . . . 12
AutoPhone . . . . . . . . . . . . . . . . . . . . . . 27
Multi-Function button . . . . . . . . . . . . . . 20
Telecoil/Tele-loop system . . . . . . . . . . . 31
Push button . . . . . . . . . . . . . . . . . . . . . 22
Direct Audio Input (DAI) . . . . . . . . . . . . . 32
Wireless . . . . . . . . . . . . . . . . 15, 23, 24, 42
Ask your hearing care professional to marked options supported by your hearing system.
Thank You
Becoming Accustomed to Amplification
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.
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
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.
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 health care professional
will explain these adjustments and the special features of your particular model.
All the key features and functions of your hearing system are explained in
video tutorials. To watch them simply scan QR codes and watch the videos
on your smartphone. If you do not have scanning application installed yet you
can go to on your mobile browser to download free application. (ScanLife® is one of the free applications you can use to play QR codes,
you can also use any other QR scanner to play the videos).
• It takes time to get used to a hearing aid. It may help to begin by wearing your hearing aid for short
periods – even as little as 15 minutes – and then gradually building up your wearing time. In a way, it’s
no different than adjusting to contact lenses. Speak to you hearing care professional, who can design
a schedule tailored just for you.
• 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.
Intended use
Generic air-conduction hearing instruments are wearable sound-amplifying devices intended to compensate for impaired hearing. The fundamental operating principle of hearing instruments is to receive, amplify,
and transfer sound to the ear drum of a hearing impaired person.
List of countries:
Products without wireless functionality are intended for worldwide sales.
The products are in compliance with the following regulatory requirements:
• In the EU: The device conforms to the Essential Requirements according to Annex I of Council Directive 93/42/EEC for medical devices (MDD) and Essential Requirements and other relevant provisions
of Directive 1999/5/EC (R&TTE). The declaration of conformity may be consulted at
• Other identified applicable international regulatory requirements in countries outside the EU. Please
refer to local country requirements for these areas.
• Products are categorized as class 2 receivers according to EN 300 440
Products with wireless functionality are intended for sale in countries within the European Economic Area
as well as Switzerland.
Specification of restrictions: You are not allowed to operate the equipment within 20 km of the centre of
Ny Ålesund, Norway.
Hearing instrument(s) model and basic information 2,3
Inserting/removing hearing instruments . . . . . . 16
Direct Audio input (optional) . . . . . . . . . . . . . . . 32
Wireless warnings and precautions
Thank you . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Multi function button (optional) . . . . . . . . . . . . . 20
Connecting/Disconnecting audio boots . . . . . . 32
(wireless devices only) . . . . . . . . . . . . . . . . . . . 42
Becoming Accustomed to Amplification . . . . . . . 5
Push button (optional) . . . . . . . . . . . . . . . . . . . 22
Care and maintenance . . . . . . . . . . . . . . . . . . 33
General warnings . . . . . . . . . . . . . . . . . . . . . . 43
Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Flight mode (wireless devices only) . . . . . . . . . 24
Cleaning the reciever tubes and domes . . . . . . 36
Troubleshooting guide . . . . . . . . . . . . . . . . . . . 46
List of contries . . . . . . . . . . . . . . . . . . . . . . . . . 6
Telephone use . . . . . . . . . . . . . . . . . . . . . . . . 25
Cleaning RIE moulds . . . . . . . . . . . . . . . . . . . . 36
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . 54
Instruments component identification . . . . . . . . 10
Listen to radio or TV . . . . . . . . . . . . . . . . . . . . 26
Cleaning wax guard . . . . . . . . . . . . . . . . . . 37, 36
Warranty and repairs . . . . . . . . . . . . . . . . . . . . 56
On/ Off function . . . . . . . . . . . . . . . . . . . . . . . 12
Cellular phones . . . . . . . . . . . . . . . . . . . . . . . 26
How to apply domes . . . . . . . . . . . . . . . . . . . . 40
Temperature test, transport and
Delayed activation (optional) . . . . . . . . . . . . . . 12
AutoPhone (optional) . . . . . . . . . . . . . . . . . . . . 27
Mini domes . . . . . . . . . . . . . . . . . . . . . . . . . . 40
storage information . . . . . . . . . . . . . . . . . . . . . 57
Inserting/ Replacing the battery . . . . . . . . . . . . 13
Telecoil (optional) . . . . . . . . . . . . . . . . . . . . . . . 31
Standard domes . . . . . . . . . . . . . . . . . . . . . . 41
Low battery indicator . . . . . . . . . . . . . . . . . . . . 5
Tele-loop systems (optional) . . . . . . . . . . . . . . 31
Hearing instruments of type SY312 are availHearing instruments of type MRIE are available in the following variants:
able in the following variants:
1. Receiver tube
2. Receiver Open Dome
3. Receiver Tulip Dome
4. Receiver Power Dome
5. RIE mould
6. Sports lock
7. Battery compartment
9. Push button
10. Multi-Function button
11. 12. 13.
NP receiver tube
HP receiver tube
Left/right indicator
Model, and serial number
Direct Audio Input
Getting started
On&Off function
1. When the battery door is closed, the hearing
instrument turns on, and the default program will
be activ­ated.
2. To turn off the hearing instrument, open
the battery door. Many individuals can use their
fingernail to pull it open.
on just prior to placing them on your ear, your hearing care professional can activate a function called
Delayed on-activation. This function will delay the time in which the hearing instruments turn on by several
seconds after the battery compartment is closed. With Delayed on-activation, a beep will be heard for each
second of the delay period.
Whenever the hearing instruments are not in use, remember to turn them off
to avoid unnecessary battery consumption.
Inserting/Replacing the battery
1. Open the battery door completely by using your
2. Remove the used battery if present. Insert the new
battery with the positive side in the correct position.
3. Gently close the battery door.
Delayed activation
Hearing instruments can be turned on once you have placed them on your ears. If you prefer to turn them
Scan a QR code with your
smart phone and watch a
instruction video.
Always use new Zinc-Air batteries that have a minimum remaining shelf-life
of 1 year.
Scan a QR code with your
smart phone and watch a
instruction video.
1. Remove the batteries to prevent leakage when the hearing instruments are not in use for an extended
period of time.
2. Do not attempt to recharge batteries (Zinc Air) which are not specifically designated as rechargeable
because they may leak or explode.
3. Do not place batteries in your mouth. Consult a physician immediately if a battery has been swallowed,
as they can be harmful to your health.
4. Keep batteries away from pets, children and individuals who are mentally challenged.
5. Do not attempt to dispose of batteries by burning them. Used batteries are harmful to the environment.
Please dispose of them according to local regulations or return them to your hearing care practitioner.
Low battery indicator
Your hearing care professional can set your hearing instrument to give an acoustical indication when the
battery is reaching its end of life. The hearing instrument will reduce amplification and emit a melody if battery power gets too low. This signal will recur every five minutes until the hearing instrument automatically
switches off. It is recommended that you keep spare batteries on hand.
Low battery indicator (instruments paired with accessories only)
Active usage of the Interton wireless accessories (Remote Control, Phone Clip and TV Streamer) requires
more battery power from the hearing instruments than when these are working on their own. When the
battery in the hearing instrument has depleted to a level at which use of the Interton TV Streamer TV and
Phone Clip cannot be supported, the hearing instrument will play two sets of descending tones. After
this, your hearing instrument and Interton Remote Control will continue to work as usual, but you will not
be able to use your Interton TV Streamer and Phone Clip. At some point the battery level will not support
the remote control either and you will once again hear the descending tones. The hearing instruments will
continue to work as usual. Once a new battery is inserted, full operation of the accessories will resume.
Sports lock
Sports lock will be applied or adjusted by your hearing care professional.
Inserting/Removing hearing instruments
Scan a QR code with your
smart phone and watch a
instruction video.
Insertion (custom RIE moulds)
1. Hold the RIE mould between your thumb and index finger and position its
sound outlet in your ear canal.
2. Slide the RIE mould all the way into your ear with a gentle, twisting
3. Move the RIE mould up and down and gently press to ensure it is positioned
correctly in the ear. Opening and closing your mouth can ease insertion.
4. Make sure the hearing instrument is seated behind the ear..
By experimenting, an easier method may be discovered. With proper insertion, hearing
instruments should fit snugly but comfortably. If the hearing instruments cause irritation of
the ears, contact your hearing care professional.
Never attempt to modify the shape of the hearing instrument, earmoulds, or tubing yourself.
It may be helpful to pull your ear up and outward with your opposite hand during
Insertion (domes)
1. Hold the receiver tube where it bends, and gently push the dome into the ear canal. Push the dome far
enough into the ear canal so that the receiver tube lies flush with the side of the head.
2. It is important that the tube and the dome fit correctly into your ear.
3. When the dome is placed correctly, you should not be able to see the receiver tube sticking out when
facing a mirror.
Removal (RIE molds)
Removal (domes)
You should never attempt to bend or modify the shape
of the thin tube.
1. Grasp the removal string and pull the RIE mould outward.
2. Consult your hearing care professional if you have difficulties removing the hearing instrument.
1. Hold the receiver tube with your thumb and forefinger and pull the tube outward.
2. Consult your hearing care professional if you have difficulties removing the
hearing instrument.
Use only original Interton/GN Hearing consumables
e.g. tubes and domes.
Operation of the hearing instrument
Scan a QR code with your
smart phone and watch a
instruction video.
Multi-Function button (optional)
The multi-function button is designed to
change the volume or listening programs
of the hearing instrument, based on different ways it is pressed.
When using the program or multi-function buttons to switch programs, each press will move the instrument
to the next program. For example, if it was in program 1 it will switch to program 2, if it was in program 2 it
will switch to program 3 etc. When you close the battery door and switch the instrument on, it will start in
program 1. Press the program or multi-function buttons if you want to move to a different listening program.
If necessary, your hearing care practitioner can change these settings and fill in the following table to indicate the new settings:
Multifunction button action
Default setting
Short press up
Increases volume
Short press down
Decreases volume
Long press up (2 seconds)
Changes programs
Long press down (2 seconds)
Activates streaming
New setting
Push button (optional)
Depending on your experience level with hearing instruments, individual hearing needs, and the
type of listening environments you experience, your
hearing care professional may activate additional
programmes. If additional programmes have been
activated, the following list explains how they work.
1. You can switch between programmes by pushing
the push button once.
2. You will then hear one or more beeps. The number of beeps indicates which
programme you have selected (one beep = programme one, two beeps =
programme two, etc.).
3. When the hearing instruments are turned off and then back on, the hearing
instrument always returns to the default setting (programme one).
Only applicable to wireless devices.
If your hearing system supports wireless functionality and it is paired with wireless accessory like TV
Streamer you can activate streaming mode.
1. Push and hold the push button or multi-function button down for 2 seconds.
2. You will then hear short melody that indicates streaming mode.
To switch back to environmental program push the push button shortly. Hearing Instrument will return to
the default setting (programme one).
For easier everyday use of your wireless hearing instrument controls you can use
wireless remote control. Ask your hearing care professional for more information.
Scan a QR code with your
smart phone and watch a
instruction video.
Flight mode. Only appliable to WL devices*
Scan a QR code with your
smart phone and watch a
instruction video.
When boarding a flight or entering an area where RF transmitters are prohibited,
wireless functionality must be deactivated, as it is not allowed to radiate radio
signals. It is possible to disable wireless operation by opening and closing the
battery compartment of the hearing instrument while at the same time pressing
the push button (for devices with push button) or multi-function button down (for
devices with Multi-Function button). When disabled manually, wireless operation
may be re-enabled by opening and closing the battery compartment normally,
(i.e. without at the same time pressing the push button or multi-function button
*Instruments paired with accessories only
Telephone use
If your hearing instruments are fit with a receiver open dome or receiver tulip dome, you
can probably use the telephone as you normally would by holding it up to your ear canal
opening. If your hearing instruments are fit with a receiver power dome or RIE mould,
finding the optimal
position for holding a telephone while using a hearing instrument may require practice for
some individuals, and one or more of the following suggestions may be helpful.
1. Hold the telephone as you would normally.
2. Hold the telephone towards the top of the ear (closer to where the m i c ro p h o n e s
3. If whistling occurs, it may take a few seconds of holding the telephone in the same
position before the hearing instrument eliminates the feedback.
4. Any whistling may also be decreased by holding the telephone slightly away from
the ear.
5. Depending on your individual needs, your hearing care professional may activate a programme
specifically for telephone use.
Listen to radio or TV
AutoPhone (optional)
When listening to the TV or the radio, start out by listening to news commentators since they usually speak
clearly, then try other programmes. If you find it difficult to listen to TV or radio, your hearing care professional will be able to give you advice on available accessories to enhance your listening capabilities for TV
and radio.
The AutoPhone function, allows your hearing instrument to automatically switch
to your tele­phone programme when a telephone receiver with an AutoPhone
magnet is raised to the ear. When the telephone receiver is removed from the
ear, the hearing instrument automatically returns to the previous listening programme.
Cellular phones
Your hearing instrument is designed to comply with the most stringent Standards of International Electromagnetic Compatibility. However, not all cell phones are hearing instrument compatible. The varying degree of disturbance can be due to the nature of your particular cellular phone or of your wireless telephone
service provider.
If you find it difficult to obtain a good result while using your cellular phone, your hearing care professional
will be able to give you advice on available accessories to enhance listening capabilities.
Placement of AutoPhone magnets
Place AutoPhone magnet on your telephone receiver to allow operation of the
AutoPhone function. In order to place AutoPhone magnet properly:
1. Clean the telephone receiver thoroughly.
2. Hold the telephone vertically, in a position similar to when making a telephone call.
3. Place the magnets just below the telephone receiver. Make sure not to cover
the microphone openings. If necessary, move the magnet to another position
to improve ease of use and comfort while speaking.
Scan a QR code with your
smart phone and watch a
instruction video.
4. If you are not satisfied with the strength of AutoPhone, you can reposition the AutoPhone magnet or add
additional AutoPhone magnets.
Only use a recommended cleaning agent to clean the telephone prior to placing the magnet on the
AutoPhone usage
Telephones can be used in a normal manner. A short melody will indicate that the AutoPhone feature has
automatically switched the hearing instrument to your telephone programme. Initially, you may need to
move the telephone receiver slightly to find the best position for reliable AutoPhone activation and good
hearing on the telephone. When remove you the telephone receiver AutoPhone will stay activated for a
few seconds to avoid accidental switching off. After that hearing instrument will switch to previously used
environmental programme.
AutoPhone warnings
1. Keep magnets out of reach of pets, children and mentally challenged persons. If a magnet is swallowed,
please seek advice from a medical practitioner.
2. The AutoPhone magnet may affect some medical devices or electronic systems. The
manufacturer of any magnetically sensitive devices (e.g. pacemakers) should advise
you regarding appropriate safety precautions when using your hearing instrument
and magnet in close proximity to the medical device or electronic system in question.
if the manufacturer cannot issue a statement, we recommend keeping the magnet or a telephone
equipped with the magnet 30 cm (12”) away from magnetically sensitive devices (e.g. pacemakers).
Telecoil (optional)
2. Only use magnets supplied by Interton/GN Hearing.
If equipped, a telecoil can be activated by your hearing care professional and accessed through one of
the additional programmes. A telecoil picks up a telephone’s magnetic signal and converts it to sound. An
optional telephone programme may help to improve speech understanding on the telephone. When using
a telecoil programme, the receiver of the telephone may need to be held closer to the hearing instrument.
The handset of the telephone may need to be moved to slightly different positions in order to find the best
AutoPhone precautions
1. High distortion during dialing or phoning may mean that the magnet is not in the optimal position relative
to the telephone receiver. To avoid the issue, please move the magnet to another place on the telephone
Tele-loop systems (optional)
Many places, such as theatres, houses of worship, and schools are equipped with tele-loop systems.
When using a telecoil programme with tele-loop systems, sound is picked up directly and may improve
speech understanding. If there is no sound from the hearing instruments in a tele-loop system and with a
telecoil programme activated, the tele-loop system may not be turned on or is not operating correctly. If
a facility is not equipped with a tele-loop system, sitting as close as possible to the front may be helpful.
Direct Audio Input (optional)
Use of Direct Audio Input (DAI), which enables a direct connection of the hearing instruments to items such
as television, radio, and remote microphones, may increase speech understanding for some individuals.
The sound source is connected to the hearing instruments by a cable or a wireless FM system to the audio
boot. This accessory connects to the bottom of the hearing instruments, and once properly clicked into
place, the hearing instruments switch to DAI automatically.
Connecting/Disconnecting audio boots
Connecting audio boots
1. Align the tip of the audio boot with the groove just above the battery compartment
and below the model number.
2. Once in place, move the boot in the direction of the battery compartment.
3. Gently click the audio boot onto the hearing instrument.
Disconnecting audio boots
4. Press and hold the button on the front side of the audio boot.
5. Gently remove the audio boot from the hearing instrument.
Care and maintenance
Proper handling
Your hearing instrument is protected by a layer of protective, hydrophobic nanocoat material.
Please follow the following instructions to prolong the durability of your hearing instruments:
1. Keep your hearing instrument clean and dry. Wipe the case with a soft cloth or tissue after use to remove
grease or moisture. Do not use water or solvents, as these can damage the hearing instrument(s).
2. Never immerse hearing instruments in water or other liquids, as liquids may cause permanent damage
to the hearing instruments.
3. Avoid rough handling of hearing instruments or dropping them on hard surfaces or floors.
4. Do not leave hearing instruments in or near direct heat or sunlight, such as in a hot, parked car, as
excessive heat can cause damage or deform the casing.
5. Do not wear your instrument while showering, swimming, in heavy rain or in a moist atmosphere such
as a steam bath or sauna.
6. 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 the instrument and battery in a sealed container together with a drying agent (desiccator) overnight.
Do not use the instrument until it is completely dry. Consult your hearing care professional as to which
drying agent to use.
7. Remove your hearing instrument when applying such things as cosmetics, perfume, aftershave, hair
spray, and suntan lotion. These might get into the instrument and cause damage.
The receiver tube
The receiver tube comes in two different power levels:
Normal Power (NP) and High Power (HP). Depending on your hearing loss you
have either been fitted with the NP or the HP receiver type.
Please go to page 10 to see your selected type. The receiver tube contains the
wiring to the receiver which delivers the sound to the ear canal. It is important
that the receiver tube and the receiver dome/RIE mold fits correctly in your ear. If the receiver tube or the
receiver dome/RIE mould irritates your ear in any way and prevents you from wearing your hear­ing instrument, please contact your hearing care pro­­fessional. You should never attempt to modify the shape of the
receiver tube yourself. The receiver tube and the receiver dome/RIE mould should be cleaned regularly.
Please see instructions in the next section.
Scan a QR code with your
smart phone and watch a
instruction video.
Cleaning the receiver tubes and domes
Changing wax guard for NP receiver tube
The receiver tube and the receiver dome should be cleaned regularly. Use a
damp cloth to clean the receiver tube and receiver dome on the outside. Do
not use water when you are cleaning the receiver tubes or the receiver domes.
Please see instruction on page 37 or 39 for how to change the wax guard filter.
1. Clean any debris from the old waxguard.
Cleaning RIE moulds
1. Separate the mould from the receiver
2. Clean the RIE mould using a mild soap,
and rinse with lukewarm water.
3. After cleaning, dry RIE moulds thoroughly and remove any residual
water and debris from the tubing utilising an air bulb and wire loop.
2. Insert the wand into the old waxguard.
3. Twist the wand with the waxguard in a clockwise direction to ensure it is
attached to the wand.
4. Pull the wand and waxguard away from the tube/mould.
5. Insert the old waxguard into the center of the HF3 wheel.
Scan a QR code with your
smart phone and watch a
instruction video.
6. Dispose of the old waxguard by drawing the wand to the narrow end of the center disposal area.
Changing wax guard for HP receiver tube
7. Insert the empty wand into a new waxguard on the HF3 wheel.
Power Dome:
Please contact your hearing care professional to have the wax guard in the power dome exchanged for
8. Pull the new waxguard attached to the wand away from the HF3 wheel.
9. Insert the wand into the receiver tube/mould.
RIE Mould:
10. Twist the wand to release the new waxguard onto the receiver tube/mould.
How to apply domes
It is recommended that your hearing care professional change domes, as incorrect dome re­place­ment
could result in the dome falling out in the ear.
Mini domes
1. Push the new dome over the flanges on the receiver.
2. Make sure that the new dome is properly and securely mounted.
Standard domes
Standard domes are mounted in a similar manner to mini domes, but a few extra steps are required. Tulip
domes consist of two “petals”. It is important to note that the largest petal is the outermost petal.
To ensure this:
1. Push the largest petal away from the receiver using a finger. This bends the petal forward.
2. Then push the largest petal back, and it will be placed on top of the smaller petal.
Only applicable to wireless devices
General precaution (wireless hearing instrument): When the wireless function is activated, the device uses
a low-powered digitally coded transmissions in order to communicate with other wireless devices. Although unlikely, nearby electronic devices may be affected. In that case, move the hearing instrument
away from the affected electronic device.When using wireless functionality and the devices are affected
by electromagnetic interference, move away from the source of interference.
General warnings (hearing instrument): Be careful when boarding flights, to remember to deactivate the
wireless functionality.Turn off your wireless functionality by using the flight mode in areas where radio frequency emission is prohibited.
For use of wireless functionality only use Interton/ GN Hearing accessories. For further guidance
regarding e.g. pairing, please refer to the user guide of the relevant Interton/ GN Hearing accessory.
This device operates in the frequency range of 2.4 GHz - 2.48 GHz.
This device includes a RF transmitter that operates in the range of 2.4 GHz - 2.48 GHz.
Applicable to all devices
General warnings
1. Consult a hearing care professional if you discover a foreign object in your ear canal, if you experience
skin irritation, or if excessive ear wax accumulates with the use of the hearing instrument.
Different types of radiation, e.g. from NMR, MRI or CT scanners, may damage the instrument. Therefore, do not wear the instrument during these or other corresponding scanning procedures. Other
types of radiation (burglar 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.
Do not wear hearing instruments in mines, oil fields, or other explosive areas unless those areas are
certified for hearing instrument use.
Do not allow others to use your hearing instruments. This may cause damage to the hearing instruments or to the hearing of the other individual.
Instrument usage by children or mentally challenged persons should be supervised at all times to
ensure their safety.The hearing instrument contains small parts that could be swallowed by children.
Please be mindful not to leave children unsupervised with this hearing instrument.
Hearing instruments should be used only as prescribed by your hearing care professional. Incorrect
use may result in sudden and permanent hearing loss.
External devices connected to the electrical input must be safe according to the requirements of IEC
60601-1-1, IEC 60065, or IEC 60950-1, as appropriate.
Only connect Interton hearing instruments to Interton/GN Hearing accessories intended and qualified to be
used with Interton hearing instruments.
Troubleshooting Guide
No sound
• Not turned on
• Turn on by closing the battery door
• Dead battery
• Replace battery
• Battery door will not close
• Insert battery properly
• Blocked RIE mould or dome
• Clean RIE mould or dome
• Blocked wax filter
• Replace wax filter or consult your hearing care professional
37, 39
Troubleshooting Guide
Not loud
• Incorrect RIE mould placement
• Reinsert RIE mould
• Blocked RIE mould or dome
• Clean RIE mould, replace dome, replace filter
• Change in hearing sensitivity
• Consult your hearing care professional
• Excessive ear wax
• Consult your hearing care professional
• Volume set too low
• Increase the volume control if available or consult your hearing
care professional
36, 40, 37, 39
Troubleshooting Guide
whistling / feedback
• Incorrect RIE mould placement
• Re-insert RIE mould carefully
• Incorrect dome placement
• Re-insert dome
• Excessive ear wax
• Consult your hearing care professional
• Feedback control may need adjustment
• Consult your hearing care professional
• RIE mould worn or damaged
• Consult your hearing care professional
• Hearing instrument settings not optimal
• Consult your hearing care professional
Troubleshooting Guide
distorted /
not clear
Wireless does not work
• Weak battery
• Replace battery
• Improper earmould or dome fit
• Consult your hearing care professional
• Hearing instrument damaged
• Consult your hearing care professional
• Hearing instrument settings not optimal
• Consult your hearing care professional
• Possible Root Cause - Device is in flight mode
• Open and close the battery compartment.
(if Root Cause is device in flight mode)
If there are any other problems not mentioned in this guide, please contact your hearing care professional.
Technical Data
Maximum output
(2ccCoupler / IEC 60118-7)
Battery size
C461-DRW NP Open, C661-DRW NP Open,
114 dB SPL (typical)
C461-DRW NP, C661-DRW NP,
114 dB SPL (typical)
Hearing Instrument Model
High Power Receiver
Normal Power receiver
Technical Data
Hearing Instrument Model
C461-DRW HP, C661-DRW HP,
Maximum output
(2ccCoupler / IEC 60118-7)
Battery size
117 dB SPL (typical)
Warranty and repairs
Interton provides a warranty on hearing instruments in the event of defects in workmanship or materials,
as described in applicable warranty documentation.
In its service policy, Interton pledges to secure functionality at least equivalent to the original hearing instrument.
As a signatory to the United Nations Global Compact initiative, Interton is committed to doing this in line
with environment-friendly best practices. Hearing instruments therefore, at Interton’s discretion, may be
replaced by new products or products manufactured from new or serviceable used parts, or repaired using new or refurbished replacement parts.
For hearing instruments that require service, please contact your hearing care professional for assistance.
Interton hearing instruments that malfunction must be repaired by Interton qualified technician. Do not attempt to open the case of hearing instruments, as this will invalidate the warranty.
Temperature test, transport and storage information
Interton Hearing Instruments are subjected to various tests in temperature and damp heating cycling between -25 C (-13F) and +70 C (+140F) according to internal and industry standards.
During transport or storage, the temperature should not exceed the limit values of -20 C (-4F) to +60C
(+140F) and relative humidity of 90% RH, non condensing (for limited time). The air pressure between 500
and 1100 hPa is appropriate.
The warranty period of hearing instruments is designated on your warranty card, which is provided by your
hearing care professional.
Be aware of information marked with the warning symbol
WARNING points out a situation that could lead to serious injuries,
CAUTION indicates a situation that could lead to minor and moderate injuries.
Advice and tips on how to handle your hearing instrument better.
Equipment includes RF transmitter.
Product is a Type B applied part.
Please ask your local hearing care professional
concerning disposal of your hearing instrument
Any issues relating to the EU Medical Device Directive 93/42/EEC, or
Council Directive 1999/5/EC on Radio Equipment and Telecommunications
terminal equipment should be directed to Interton A/S.
Worldwide headquarters
Interton A/S | Lautrupbjerg 7 | DK-2750 Ballerup | Denmark
Tel.: +45 45 75 1111 | Fax: +45 45 75 1119 | | CVR no. 55082715
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