Excell MCDSe series
Rel. 1
alsa
apparecchi medicali srl
13
equipment will automatically reduce the output power delivered to 50%, in order to avoid all risks of
burns due to a bad contact between the plate and the patient;
4) from 250 to 380 ohms: the quality of the contact does not allow the delivery of the electrosurgical
unit maximum power anymore. Besides the luminous signals mentioned above, there is also here a
blinking red light, which tells the operator that something is going wrong;
5) more than 380 ohms: the contact between the plate and the patient is definitely not enough. The red
light remains lit; the equipment gives an intermittent acoustic alarm signal, and on the display the
message
no nP
appears. The equipment interrupts the output power delivery until the quality of the
contact is re-settled again.
Set the R40 pot placed on the board for the Handle Control (Alsa code: 801462), by using a simulation
potentiometer connected to the terminals of the neutral plate, in order to allow the unit functioning as
described above.
SECTION
FOR
THE
ARGON
GAS
COAGULATOR
Connect the cylinder at the rear input, and adjust the pressure until the light for the absence of gas is
switched off. The recommended input pressure is 2.5-3 bar. The activation of this section is possible only
when the input pressure is considered adequate for the use. By the contrary, it is not possible when:
•
the input pressure is not sufficient at all (the red light placed under the setting bar for the output flow
lights up);
•
the input pressure is too high (the equipment shows the alarm signal
HI PrS
).
By pressing the button indicated with:
the coagulator section is activated; at this point, the unit performs a short selftest for this specific section. If
no anomaly is present, the equipment is ready for the use of the Argon gas; the operator must set the
desired flow level, by using the increase/decrease buttons. At the same time, the luminous signal for the
activation of the SPRAY coagulation and the one for the radiofrequency output to be used start blinking. At
the switching on, the indication will show exactly the flow supplied, and not simply the level that had been
set.
In order to verify this action, first of all it is necessary to test the status of the control board. To do that,
switch the equipment on, and on the board with Alsa code 801468 (Argon Management board) verify what
follows:
•
Vref on J7: the multimeter must indicate 10V (± 0.1V); if not, set the R40 pot of the board with Alsa
code: 801468;
•
the offset of the input pressure sensor on J2: the multimeter must indicate 0V (± 0.01V); if not, set
the R26 pot;
•
the offset of the input pressure sensor on J3: the multimeter must indicate 0V (± 0.01V); if not, set
the R39 pot.
The control of the Argon gas supply is possible by using a flowmeter with full scale
of about 20lt/min, and a
manometer with full scale
of about 3bar.
By connecting the Argon supply handle to the output of the unit, check the correspondence between the flow
set and the flow supplied. If necessary, set the screw regulator placed at the output of the pressure reducer,