GIMA SpA
DIATERMO MB202
Manuale d’istruzioni / Instruction’s Manual
MA160IGBb
26
4.2 FRONTAL PANEL
1 Mains switch
2 Pulse time selector
3 Keyboard for program selection, recording and data recall
4 Selector of function and indicator for: pulse repetition – duty cycle percentage for coagulated cut – Reading and
acknowledgement of neutral electrode’s impedance.
5 Function keyboard
6 Section of control and indication level of cut current
7 Section of control and indication level of coagulation current
8 Alarm warning for current delivery over time
9 OC (open circuit) alarm
10 Handle connection
11 Return plate connection
4.3 OPERATION MODE
4.3.1
S
WITCHING
O
N
When switched on the electrosurgical unit performs automatically a test to establish the correct operation of itself and of the
connected accessories as well. In case anomaly is found an alphanumeric message it is shown coded according to the chart codes
brought in the chapter MAINTENANCE. This test lasts about 10 seconds. At the end of the control the equipment restores last
use operational conditions, and activate the signal of alarm OC (open circuit).
4.3.2
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 around 3 seconds later, and the
indicator show either the duty-cycle of the cut current CUT, if this is selected, or the display is extinguished in case the
operational BLEND is selected. Every time the impedance value check is desired simply simply pressing PLATE push button
can do this.
If when the unit has switched on, the adapter for using the bipolar forceps is had been inserted, after the test of correct operation,
the equipment selects automatically the bipolar operational mode without performing the cycle related to the control of the
neutral electrode circuit.
