SLE SLE2000 HFO, Service Manual, Page: 73 / 84

SLE2000 HFO Service Manual
Doc No. SM/0001: Issue 7.0
Page 73 of 84
3) Switch HFO mode to INSP. Observe that HFO modulation occurs during inspiratory phase of
pressure cycle only.
4) Switch HFO mode to CONT. Observe that HFO modulation occurs during both inspiratory and
expiratory phases of pressure cycle.
5) Switch HFO mode to OFF. Check that HFO modulation does not occur during any phase of
pressure cycle.
6) Select PTV mode. With HFO in CONT mode, observe that HFO modulation does not occur
during any phase of pressure cycle.
7) With HFO in INSP mode, observe that HFO modulation occurs during inspiratory phase only.
8) With HFO in EXP mode, observe that HFO modulation does not occur during any phase of
pressure cycle.
9) Select SIMV mode and repeat the previous test.
7.3 D
ISPLAY
T
IMEBASE
V
ERIFYING
:
Check that the display timebase rate control setting corresponds with the digitally
displayed rate for settings of 6, 4, 3, 2, 1 and 0.5 seconds.
7.4 D
ISPLAY
P
RESSURE
R
ANGE
V
ERIFYING
:
Check that the display pressure range control setting corresponds with the digitally
displayed range for settings of -60 to +60 cmH
2
O and -5 to +60 cmH
2
O.
7.5 F
REEZE
P
USH
-B
UTTON
V
ERIFYING
: F
REEZE
P
USH
-B
UTTON
1) Press FREEZE push-button and confirm that ‘FREEZE’ message is displayed for 1 minute
±
3
seconds. Displayed waveform should not update during this period. After 1 minute the display
should revert to updating mode.
2) By pressing FREEZE push-button repeatedly check that the FREEZE function can be toggled on
and off.
7.6 HFO FAIL
Select CPAP mode. Switch HFO to CONT mode. Set up an HFO pressure of 10 cmH
2
O at 3Hz. Short
out A0736/01/JP1. Check that HFO pressure modulation is suppressed in less than 1 second and that the
HFO FAIL audible and visual alarm is activated.