Inventis TRIANGLE, Manual, Page: 31 / 368

23
EN
Chapter 7
Maintenance
The Triangle audiometer does not require any special periodic maintenance other
than calibration and normal cleaning, both of which are described in this chapter.
The device must be turned off before starting any kind of cleaning operation.
The performance and safety of the device will be assured as long as the
recommendations for care and maintenance indicated here are correctly
followed.
Apart from replacing the battery, the inspection and servicing of
internal components must be left entirely to technicians approved by
Inventis srl.
Transducers are manufactured utilizing ultra-fragile diaphragms
that could be damaged in the event of impact. Handle with care
during maintenance.
7.1 P
ERIODIC CHECKS
The procedure described under this heading must be carried out
when the device is used for the first time each day.
The tests must be conducted with the device positioned for normal
use.
Before switching on the device, be sure that there is no sign of damage visible
on the equipment, including the accessories and the external power adapter.
Visually inspect the power cable and connectors to verify the insulation’s
integrity, and make sure that they are not subject to any kind of mechanical
loading or stress that could cause damage. Make sure that all parts and cables are
properly connected.
Check subjectively that the air conduction and bone conduction output is equal
on both channels and all frequencies, e.g. by generating a stimulus @ 10 or 15
dB, just enough to hear. The person who carries out this check should have good
hearing.