Utah Medical Products FINESSE +, Руководство по обслуживанию

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Service Manual
25
The system is capable of monitoring dispersive pad contact to the patient. To
enable this function, a split-style dispersive pad is required (see compatibility list). If a split
pad is not detected, the use of a solid pad is assumed and the system will not
detect compromise in pad contact to the patient.
For best operation, the dispersive pad should be attached to the patient prior to plugging the
pad into the dispersive pad receptacle. Once the CQM system detects the pad's contact
quality to the patient, a threshold is internally set that will activate the CQM error indicator if
the dispersive pad partially peels away from the patient.
When the CQM-compatible dispersive pad is properly and fully applied, tests of the
CQM system found that the circuit will display the error indicator when approximately 30% of
the dispersive pad's surface area has separated from the patient. At the threshold of the error
condition, tests performed per standard IEC/EN 60601-2-2 sec 201.15.101.5 found the
following pads caused less that 6
˚ C temperature rise on the patient's skin.
CQM-compatible pads (UTMD item numbers and descriptions):
ES-1179 Dispersive Pad, CQM (split), precorded
ES-1180 Dispersive Pad, CQM (split), non-corded (requires reusable cable)
WARNING: To ensure safe contact of the dispersive pad to the patient, use only
pads listed as compatible with the 'S CQM system. The use of contact
monitoring pads that are not on this list may not properly signal an error
condition and result in patient injury.
CQM circuit frequency: 39.5 kHz
CQM pad contact range: 10-130
Ω
, ±5
Ω
Solid pad contact range: <10
Ω
±5
Ω
, but not greater than minimum of CQM contact range
Audio Tone Specifications
All audio tone specifications are measured in decibels, A-weighted scale, at a distance of 1m
from the front of the system, and are nominal values.
Cut Mode Tone: 45-70 dBA, adjustable, 625 Hz continuous tone while activated
Coag Mode Tone: 45-70 dBA, adjustable, 1.25 kHz continuous tone while activated
Error Tones: 70 dBA, not adjustable:
CQM error: intermittent 2.5 kHz tone, 0.25 sec on/0.25 sec off
Pad disconnect error: intermittent 2.5 kHz tone, 0.25 sec on/0.25 sec off
Cross-key error: continuous 2.5 kHz tone
Output safety error: continuous 2.5 kHz tone
Smoke Evacuator System
Air Flow vs. Supply Voltage
At the Nominal Supply Voltage, the air flow through a new disposable filter coupled to a 30
cm long 6 mm ID tube is not less than 100 liters per minute (3.5 cubic feet per minute) at the
"high" setting and not less than 70 liters per minute (2.5 cfm) at the "normal" setting.