General Maintenance Procedures - Interacoustics AT235 Instructions For Use Manual

11) Check that attenuators do attenuate the signals over their full range and that attenuators which are
intended to be operated while a tone is being delivered are free from electrical or mechanical noise
12) Check that controls operate silently and that no noise radiated from the audiometer is audible at the
subject's position.
13) Check subject communication speech circuits, if appropriate, applying procedures like those used for
pure-tone function.
14) Check tension of headset headband. Ensure that swivel joints are free to return without being
excessively slack.
15) Check headbands and swivel joints on noise-excluding headsets for signs of wear strain or metal
fatigue.

4.2 General maintenance procedures

Before cleaning always switch off and disconnect from the power supply
•
• Follow local best practice and safety guidelines if available
Use a soft cloth lightly dampened with cleaning solution to clean all exposed surfaces
•
Do not allow liquid to meet the metal parts inside the earphones / headphones
•
• Do not autoclave, sterilize, or immerse the instrument or accessory in any fluid
Do not use hard or pointed objects to clean any part of the instrument or accessory
•
Do not let parts that have been in contact with fluids dry before cleaning
•
• Rubber ear-tips or foam ear-tips are single use components
Ensure isopropyl alcohol does not come into contact with any screens on the AT235
•
Recommended cleaning and disinfection solutions:
• Warm water with mild, nonabrasive cleaning solution (soap)
70% isopropyl alcohol
•
Procedure
• Clean the instrument by wiping outer case with a lint free cloth lightly dampened in cleaning solution
Clean cushions and patient hand switch and other parts with a lint free cloth lightly dampened in
•
cleaning solution
• Make sure not to get moisture in the speaker portion of the earphones and similar parts
D-0133834-A – 2022/09
AT235 - Instructions for Use - EN Page 40