GIMA spa
DIATERMO MB240 – DIATERMO MB380
Manuale d’ Istruzioni / Instruction’s Manual
MA129IGBg
39
4.3.5
N
EUTRAL
E
LECTRODE
'
S
C
IRCUIT
(S
KIN
P
LATE
E
LECTRONIC
C
ONTROL
)
The neutral electrode's circuit is continually watched by a special circuit (Skin Plate Electronic Control) that prevents danger
of burns to the patient due the loss of contact between the reference plate and the patient skin. The circuit is also watched to
avoid that the variation of the characteristics of conductibility of the plate can provoke reduction of conductibility of the
circuit, and therefore danger of burns to the patient.
The value of impedance found in the circuit of the neutral electrode is shown to the operator that, if he considers it suitable to
the job to develop, he accepts it by pressing the OK push button. The signal OC is extinguished. If the value of impedance is
superior to 300 ohms its acceptance it is not acknowledged by the microcontrollor of the equipment, therefore the signal OC
is not extinguished and the disbursement of power has not allowed.
If the value of impedance accepted is acknowledged, the indication of the impedance stops.
If after having acknowledged the shown impedance the value of this it increases relatively to the acknowledged value
according to the followings increases:
for acknowledged impedance <20
9
value + 30
9
for acknowledged impedance between 20
9
and 100
9
value + 60
9
for acknowledged impedance > 100
9
value + 50%
the equipment prevents the delivery of current, it indicates the OC condition and shows the new value of impedance.
4.3.6
C
ONTROL OF THE
W
ARNINGS
’
A
COUSTIC
L
EVEL
The sound level, of the warning signals those are present during the HF power delivery, is factory preset at about 70 dBA. It
can be changed from about 40 dBA up to about 70 dBA in four steps.
To select the proper sound level please do as follows:
1 . Select Bipolar operative mode or be sure the Patient Plate is right connected, if one of the other operative modes is
selected.
2 . Push the CUT/COAG 1 key and, maintaining this key pushed, push the CUT/COAG 2 key. All the four indication’ LEDs
in the operative mode section will light.
3 . Select the desired sound level by pushing one of the four keys: MANUAL for the lowest sound level, PEDAL and DUAL
for intermediate levels or BIPOLAR for the highest sound levels.
When the sound level selection is finished, a short sound signal can be heard and the previously preset operative conditions
are automatically restored.
The new preset sound level remains stored until a new selection is made.
4.3.7
D
IGITAL
D
ISPLAYS
The four Digital Displays are used for monitoring the preset output power, as follow:
MONOPOLAR CUT:
Displays the Monopolar Cut, or Monopolar Cut/Coagulation 1, or Monopolar Cut/Coagulation 2 preset output power level.
MONOPOLAR COAG:
Displays the Monopolar Coagulation 1, or the Monopolar Coagulation 2, or Monopolar Coagulation 3 Spray preset output-
power level
BIPOLAR CUT:
Displays the Bipolar Cut preset power level
BIPOLAR COAG:
Displays the Bipolar Coagulation preset power level.
