25/08/2004 ©
Söring
Service-Manual Arco- and RF-units
1
not valid for A-3000/ -2000
2
not valid for Arco-2000
-64-
3
not valid for MBC600
4
not valid for Arco-1000
12.4.5.5. Adjustment of patient electrode recognition (Service function 5)
This function sets the thresholds for the transfer resistance PE-electrode to patient. The
PE-monitor recognizes four ranges for the transfer resistance:
-0 to 5 Ohm
PE-electrodes, undivided type
Indication green
-15 to 60 Ohm
PE transfer resistance good
Indication green
-75 to 95 Ohm
PE transfer resistance bad
Indication yellow
-more than 120 Ohm
PE transfer resistance insufficient
red, alarm
For the transition of states only the transition between two states is of interest. For
adjustments the given adjustment resistors are connected and their value is transferred
as a setup value by pressing CUT3 respectively GAS3 (Arco 1000).
Sub-function
Parameter adjustment
Adjustment resistor
1
Transition short circuit - good
10
Ω
2
Transition good - bad
68
Ω
3
Transition bad - open
100
Ω
4
Lower impedance limit (bipolar)
150
Ω
5
Upper impedance limit (bipolar)
1k
Ω
The adjustment of bipolar recognition is done with a resistor of 150
Ω
in 5.4 and 1k
Ω
in
5.5, connected to the bipolar socket. The value is stored according to 5.1 - 5.3 with CUT3
(GAS3).
12.4.5.6. Auto stop times (Service function 2)
With this function the recommended auto stop times are set. One digit equals 10 msec,
the indication is in hexadecimal. The following values are set:
Sub-function
Arco-types MBC-types
1
32Hex (Argon)
64Hex (Handpiece 1)
2
64 Hex (Coag)
64Hex (Handpiece 2)
3
64Hex (Bipolar)
64Hex (Bipolar)
Remarks: 32Hex = 0.5 sec, 64Hex = 1 sec. If auto stop times are too long, they may be
slightly reduced.
12.4.5.7. Service adjustments of Cut module (Service functions 11 and 12)
With these service functions the resonance frequencies for monopolar and bipolar
operations can be adjusted. The cut module receives a fixed voltage. The power
regulation is set to a fixed value of 150W.
Another service function switches off the power supply and sets the power selection to
"zero". Now the offset of the measuring amplifier for power measurement can be
adjusted.
-Service function 11
Resonance frequency monopolar & bipolar
-Service function 12
Offset adjustment of measuring amplifier for power measurement and check and
adjustment of arc detection.
For further details see "adjustment of cut module".
