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Moisture build up is a common cause of hearing aid failure and 
preventing it from occurring will help extend the life of the hearing aid. 
We recommend placing hearing aids into a ‘dry-aid kit’ or dehumidifier 
overnight which will help draw moisture out of the instruments 
overnight. A selection of dry aid kits are available on our website. 
Please do not wear the hearing aid when swimming. Remove the 
hearing aid when it is raining, and when showering or bathing. If 
hearing aid accidentally falls into the water, do not use a hairdryer or 
microwave to dry it. You can dry it with a soft, clean cotton cloth and 
put it in a ventilated environment, or in a dry aid kit for a few days. 
Do not expose the hearing aid to extreme temperatures or allow 
prolonged exposure to sunlight.
Do not drop your hearing aids or knock them against hard surfaces.

Precautions  

for hearing aid

The product’s maximum output sound pressure level is under the product 
software control, which ensures the end user cannot be exposed to sound 
pressure levels higher than 132 dB, even in the event of device failure.
Do not wear your hearing aids during X-ray, MR scans, CT scans, 
short-wave diathermy, or similar radiation treatments.
Please take off your hearing aids before you go into high electrical 
fields or strong magnetic fields and leave your hearing aids outside. 
(Such as transformer substation or power stations). 

Precautions  

for hearing aid

10889 HD91-150 User Guide.indd   12-13

27/09/2017   12:36

Summary of Contents for HD 151

Page 1: ...Operating instructions Before use please read these instructions to help you get the best out of your HearingDirect com hearing aid Model HD 91 151 10889 HD91 150 User Guide indd 1 27 09 2017 12 36...

Page 2: ...you have any questions Your HD 91 151 hearing aid 4 Installing the battery 5 Turning the hearing aid on and off 6 Placing the hearing aid into the ear 7 Using the fitting domes 8 Removing your hearing...

Page 3: ...r the battery door is fully opened Close the battery door smoothly after a new battery is installed Do not close the battery door with force as it may damage the hearing aid If you cannot close the ba...

Page 4: ...t three seconds before turning it on again Turning the hearing aid on and off Hold your hearing aid with your thumb and forefinger on the outer edges of the case Gently insert the canal tip of the ins...

Page 5: ...securely as possible The dome should not pull off the hearing aid when you pull on it with light pressure Please check before each insertion into the ear Using the fitting domes Most people find it e...

Page 6: ...be brushed away it is time to change the wax guard The existing wax guard should be removed from the end of the hearing aid using the orange tool supplied originally with your order New wax guards can...

Page 7: ...environment or in a dry aid kit for a few days Do not expose the hearing aid to extreme temperatures or allow prolonged exposure to sunlight Do not drop your hearing aids or knock them against hard su...

Page 8: ...pressure 86kPa 106kPa Transportation and storage conditions Temperature 20 50C Humidity 30 93 Impact on the environment Please dispose of the used battery according to local regulations Hearing aid wa...

Page 9: ...e Water Nether Wallop Stockbridge SO20 8DR UK 0120 Austar Hearing Science and Technology Xiamen Co Ltd Address RM201 No 2 Gaoqi South 12th Road Huli District Xiamen Fujian P R China Postcode 361006 10...

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