Service manual

- alsa apparecchi medicali s.r.l. -
Pag. 15
- When the control is performed using an analogic thermocouple RMS instrument (with reading from 0 to
250 or 500 mA) it is possible to damage it because of a mistake of connection and so it is always
advisable to do first the reading using an instrument with a higher range (for example 0-1,5 A) to do a
first control reading
- the accessories and the connection leads used to perform the measures with output leads must be those
standard supplied with the device
- all measurements must be performed only on insulated tables (distance: 1 mt. from a surface earthed
(the floor)
- during the tests the connection leads, the instruments or the accessories connected to the unit can’t be
touched for any reason in order to avoid every contact towards the earth that would falsify the reliability
of the measurement increasing it.
Measurements of leakage current on monopolar section directly at the HF unit terminals
(maximum limit 100 mA) performed according to requirements of Par. 19.3.101 b) of
International Standard IEC 60601-2-2 III Ed. – 1998 pag. 17
Active electrode (without rated load)
1)Set up the unit, leads and instruments as shown in the figure A (see below) with all the leads as shortest
as possible (active and neutral leads the minimum possible - about 20 cm)
2)Put the unit on the table