SLE SLE2000 HFO, Service Manual, Page: 76 / 84

SLE2000 HFO Service Manual
Doc No. SM/0001: Issue 7.0
Page 76 of 84
8. M
AINTENANCE
S
CHEDULE
8.1 M
ONTHLY
O
PERATIONAL
C
HECKS
8.1.1 B
ATTERY CONDITION AND
LED
DISPLAY TEST
.
Switch unit to CPAP position. All alarms should sound for two seconds. All digital displays should show
a sequence of digits from 0 to 9 and all alarm LED's (except the HFO fail and Block LED) will be on for
the duration of this test.
8.1.2 A
IR AND
O
XYGEN
S
UPPLY
F
AILURE
A
LARM TEST
.
With the FIO
2
blender set to 60% remove in turn both air and oxygen supplies. Check that in each case
the alarm sounds, and on replacement the alarm cancels.
8.1.3 C
ONDITION OF
O
2
C
ELL
Set blender to 21% and remove O
2
supply. Observe
that displayed FIO
2
is 21%. Reconnect O
2
supply and
remove air supply. Set blender to 100% and observe
that displayed FIO2 is 100% (for adjustment see
section 6.2.6.1 on page 69). If the required value
cannot be set within 4% or the reading is unstable then
replace the cell. For the removal of the oxygen cell see
section 4.6 on page 23.
8.1.4 I
NSPIRATORY
N
OZZLE
Set ventilator to CMV, 60BPM, 0.5 sec inspiration time. Set a driving gas pressure to read 40cmH
2
O.
Peak inspiration pressure should be between 37 and 43 cmH
2
O.
8.1.5 CPAP
PRESSURE CHECK
Set ventilator to CPAP, HFO mode off. Check that the CPAP pressure regulator can be set up to produce
a pressure of at least 35 cmH
2
O.
8.1.6 HFO
PRESSURE CHECK
Check that the Oscillator pressure regulator can be set up to produce a peak to peak pressure of 90
cmH
2
O with the ET tube in the patient circuit occluded and the HFO rate set to 3Hz.
Location of O
2
Cell within the pneumatic
module