Service manual

- alsa apparecchi medicali s.r.l. -
Pag. 16
3)Connect the unit to the mains outlet with the power supply cord (the metallic casing is earthed by means of
the earth connection of the same cord)
4)Lay on the table all different leads (5,6,7) and connect measuring resistance and HF current meter
5)Connect to the earth the cable needed for the measurement (to the mains outlet of point 3)
6)Set the maximum power for every available monopolar function and activate the unit using the foot pedal
checking by the HF current meter the current flowing to earth
Active electrode (with rated load)
Repeat the same measurement with the rated load (antinductive load of 400 ohm) connected between active
and neutral electrodes.
Set up the unit, leads and instruments as shown in the figure A 1 (see below)
Legend: 1)mains outlet perfectly connected to ground
2)perfectly insulated table (with a distance of 1 mt. from the surface connected to ground – wall)
3)power supply cord (folded up to form a bundle having a length not exceeding 40 cm.)
4)HF unit
5)active electrode
6)neutral plate
7)cable needed to do the measurements
8)measuring resistance (antinductive - 200 ohm - at least of 10 Watt)
9)HF current meter (reading instrument)
NEUTRAL PLATE
Repeat for the neutral plate the same procedure above detailed for the active electrode.
Set up the unit , leads and instruments as shown in the figure B (see below)
As for the bipolar functions, the maximum admissible dispersion current must be less than 1% of the
maximum power that may be output by the function in question. For functions which output 99 W, this
current must remain below 70 mA, for functions which output 80 W, the admissible limit is equal to 63 mA
and finally for functions which output 60 W, the limit is 54 mA.