29
GA--A 181
.
NOTE!
The drilling performance of the sonotrode can be tested with the help of a
test item (surgically removed kidney stone or comparable material). For
the test, use the same setup and procedure as described under “trans-
ducer/sonotrode function check” as well as the following test routine:
Z Prepare the Ultrasound Generator and Suction Pump as for the func-
tion tests of the transducer and sonotrode.
Z Place the test item in a container filled with irrigation fluid.
Z Hold the transducer in such a way that the sonotrode tip touches the
test item (do not press, use suction effect of pump).
Z Actuate the foot switch.
'Within a matter of a few seconds the sonotrode should drill into the
stone. The drilling effect will depend on the sonotrode contact as well
as the hardness of the test item. Switch to the different power stages
to check the drilling behaviour at different intensity settings.
7.6 Technical safety check
.
IMPORTANT!
Technical safety checks may only be carried out by the manufacturer or
persons with special technical knowledge.
The test results must be documented and included in the device accom-
panying book.
Do not use the device if the specified values are not shown or measured,
or functions are not fulfilled.
Test interval:
Every 12 months, perform a technical safety check with the following
scope:
Z Visual check for completness, contamination, aging and wear.
'Check lettering and labelling for proper condition and legibility.
'Check electrical lines and connectors for condition, possible damage
and correct connection.
'Check liquid delivery systems for leakage.
Z Electrical safety check to IEC/EN 60601--1.
'Check protective ground/earth connection.
'Check leakage current.
Z Check function in accordance with this manual.
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