SLE SLE2000 HFO, Service Manual, Page: 75 / 84

SLE2000 HFO Service Manual
Doc No. SM/0001: Issue 7.0
Page 75 of 84
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-energised (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.
7.12 P
RESSURE
C
ONTROLS
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 inspiratory 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.
5) Check that CPAP pressures are in accord with decal markings for 10, 20, 30 and 30 and 40
cmH
2
O.
6) Check that INSPIRATORY pressures are in accord with decal markings for 10, 20, 30, 40, 50 and
60 cmH
2
O.
7) Check that OSCILLATOR pressures are in accord with decal markings for 10, 20, 30, 40 and 50
cmH
2
O, with the ET Tube occluded. Check this at 3Hz and 10Hz.