SLE SLE2000 HFO, Руководство по обслуживанию, Страница: 74 / 84

SLE2000 HFO Service Manual
Doc No. SM/0001: Issue 7.0
Page 74 of 84
7.7 FAN FAIL
Short out A0736/01/JP3 and A0736/01/JP4 in turn. Check that FAN FAIL audible and visual alarm is
activated in each case.
7.8 S
LOW
R
ISE
W
AVEFORM
Switch to CMV mode. Select 30 BPM with 1 second INSP time. Set an inspiratory pressure of 30
cmH
2
O. Set HIGH alarm to 60 cmH
2
O, CYCLE FAIL alarm to 20 cmH
2
O, and LOW alarm to -20
cmH
2
O. Select a display frame time of 2 seconds.
Observe the pressure wave. With the PRESSURE WAVE switch in the square position, the pressure
waveform rising edge should be fast (nearly vertical). With the PRESSURE WAVE switch in the slow
rise position, the rising edge should be tapered in appearance, with a time constant of about ¼ second.
7.9 PTV M
ODE
1) With a full patient circuit connected, check operation of the PTV trigger system. By simulating a
patient effort at the ET connector, using a 2ml syringe drawn out over a period of ½ second,
ensure reliable triggering at the maximum sensitivity setting. Repeat the test using a 10ml syringe
with the sensitivity control at its minimum setting
2) Check that the trigger back-up system works properly and that the back-up audible beep and LED
are activated when a back-up breath is initialised.
7.10 SIMV M
ODE
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.
7.11 B
LOCK AND
L
EAK 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.