Utah Medical Products FINESSE +, Руководство по обслуживанию

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22
Service Manual
FIN-220
System Total ES Module Smoke Evacuator
Idle State: 0.2 amp, 50 watts 0.2 amp, 50 watts negligible
Cut Mode: 2.6 amps, 585 watts 1.1 amps, 240 watts 1.5 amps, 345 watts
Coag Mode: 2.3 amps, 520 watts 0.8 amps, 175 watts 1.5 amps, 345 watts
Overcurrent Protection
The is protected by two sets of 5mm x 20mm, time-lag, low breaking capacity,
250VAC fuses (all fuses are type TxAL250V, where x is the rating capacity in Amps):
Electrosurgical System: a pair of fuses protect the leads connected to the primary winding of
this module's main power transformer.
FIN-110: 2.5 amp FIN-220 1.25 amp
Smoke Evacuation System: a pair of fuses protect the smoke evacuation motor.
FIN-110: 3.15 amp FIN-220 2.5 amp
Output Characteristics
Output Frequencies
Output Frequency (all modes): 450 kHz ± 50 kHz.
Waveform Pattern Repetition Rate: 28.1 kHz ± 3 kHz.
Output Values at Maximum Settings
Operating Mode Output Setting
a
Duty Cycle
b
MOV
d
Crest Factor
e
Cut 99 100% 1080 1.8
Blend 1 99 62.5% 1280 2.2
Blend 2 99 50% 1420 2.5
Blend 3 99 37.5% 1500 2.8
Coag 75 c 2400 5.8
a Output Setting specified is power in watts, plus or minus 15%, delivered into a 500
Ω
patient load.
b Duty Cycle is ratio of burst duration to burst-plus-rest duration.
c Coag pulse consists of two high voltage cycles followed by lower amplitude ringout for about 10
µ
sec,
repeated at 28.1 kHz.
d Maximum Output Voltage; voltage is zero-to-peak, open circuit. Lower values are permitted.
Use only
accessories with a Rated Accessory Voltage (RAV) that is greater than the MOV.
e Crest factor is defined as the ratio of peak voltage to RMS ("average") voltage, and is a general quantifi-
cation of an electrosurgical waveform's degree of coagulation. Data shown are typical values at 500
Ω.
Table 1. Output Characteristics
Output Power vs. Load
Output display is calibrated to be relative power in watts at a load of 500
Ω
, ±
15% or
±
5W,
whichever is greater.
In the pure cut and blend modes, the negative-feedback output stage attempts to maintain
the output voltage under low resistance loads so that the cutting characteristics are quite
uniform throughout the entire cut. Cut mode maximum output is 140 watts at 250
Ω
patient
load. See Figure 5 for cut and blend mode output power vs. load data.