Utah Medical Products FINESSE +, Руководство по обслуживанию

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24
Service Manual
Maximum Output Voltage vs. Output Setting and Mode
Figure 7 shows the Maximum Output Voltage (MOV) for each mode and output setting. Only
use active electrodes and pencils that have a Rated Accessory Voltage (RAV) greater than the
MOV for the selected output setting and mode.
Output Power vs. Displayed Setting
The output of the system increases linearly with adjustment of the front panel
output settings.
Figure 8 shows the typical output power of each of the five modes over the
full control range. All curves shown indicate output at 500
Ω
load resistance.
0
20
40
60
80
0 20 40 60 80
O
ut
pu
t,
W
at
ts
Displayed Output Setting
Coag Mode
0
20
40
60
80
100
0 20 40 60 80 100
O
utput,
Wat
ts
Displayed Output Setting
Cut and All Blend Modes
Figure 8. Typical output power vs. display setting for cut and blend modes and coag mode
Output Error Safety Circuit Specifications
The system is equipped with a safety circuit that monitors the output signal levels
and disables all system functions when the output exceeds the expected "nominal" output.
The error indication can only be reset by turning off the main power switch.
The output error safety system will activate if the output power exceeds the displayed output,
as defined in standard IEC 60601-2-2,
Particular Requirements for the Basic Safety and
Essential Performance of High Frequency Surgical Equipment and High Frequency Surgical
Accessories.
This threshold is strictly defined, but in the it is generally characterized
by a threshold that is 25W-30W above the selected output setting.
CQM Circuit Specifications
CAUTION: CQM circuits used in electrosurgical generators are an excellent tool
to minimize the risk of a patient injury during electrosurgery. CQM is effective
at detecting changes in pad contact to the patient, and can signal the user to a
potentially unsafe condition. However, these circuits should not be relied on as a
method for detecting improper pad application or as a substitute for user attentiveness
during the procedure.
Always apply the dispersive pad as indicated in the dispersive pad instructions for use,
and periodically make a visual check the pad application to the patient.