SLE 2000 HFO, Руководство по обслуживанию

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Page 54 of 258 Issue 10 (01/10/2004)
13.10 SIMV Mode
Check operation of the SIMV trigger system, ensuring that the back-up audible beep is
activated during machine initialised breaths. Check that the SIMV BPM rate may be controlled
by adjustment of the BPM control and display.
13.11 Block and Leak alarms
Under simulated temperature conditions for normal operation (28°C-32°C). By varying the
pressure in the Fresh Gas supply external tubing, and monitoring this pressure using an RT
200, confirm that:
1) The LEAK audible alarm and warning LED are activated at pressures less than 17.5
cmH
2
O.
2) The BLOCK audible alarm and warning LED are activated at pressures greater than 80
cmH
2
O.
3) The Fresh Gas supply pressure relief valve RV2 is activated at pressures greater than
140 cmH
2
O.
To generate a high pressure alarm condition with a standard patient circuit fitted to the
ventilator occlude the expiratory limb, and note that:
4) The Fresh Gas supply solenoid valve is de-energized (leak alarm is activated).
5) Airway pressure is between 10 cmH
2
O and 25 cmH
2
O while the expiratory limb is
occluded.
6) Fresh Gas supply flow rate is between 0.8 L/min and 1.2 L/min when expiratory limb is
not occluded.
13.12 Pressure Controls
1) Check that the CPAP pressure regulator can be set to produce at least 35 cmH
2
O and
not > 45 cmH
2
O airway pressure in its fully clockwise position.
2) Check that the INSP pressure regulator can be set to produce up to 64 cmH
2
O inspira-
tory airway pressure in its fully clockwise position.
3) Check that the OSCILLATOR pressure regulator can be set to produce up to 90 cmH
2
O
Peak to peak pressure with the ET tube occluded and HFO rate set to 3Hz.
4) With the above settings, check that the mean pressure level is not greater than +6
cmH
2
O.