OPRHT70 A0310
5-3
Operating the HT70 Ventilator
5
o Attach the test lung to the breathing circuit and verify that the
audible alarm ceases and the alarm message remains. Press
Alarm Silence/Reset button to clear the message.
3. Pressure Gauge / PEEP Check
o Verify that the pressure gauge moves up and down with each
breath.
o Select PEEP and Peak Paw to display in each of two Monitor
Data buttons.
o Adjust PEEP to 5 cmH
2O. Verify that the Monitor Data buttons
displays a PEEP value of 4 to 6 cmH2O. Reduce PEEP to zero.
o Select Pressure Control and set pressure at 20 cmH2O. Verify
that the Monitor Data button displays a Peak Paw of 17 to 23
cmH2O.
4. Volume/Minute Volume/Respiratory Rate Monitor Check
o Change Breath Type back to Volume Control and confirm Tidal
Volume is set to 500.
o Select VT, Min Vol and RR Tot to display in each of three Monitor
Data buttons. Verify that VT= 450-550, Min Vol = 6-9 and RR Tot
= 13-17.
5. Power Pac Battery Pack and Backup Battery Check
o Unplug the A.C. power supply, clear the alarm with the Alarm
Silence/Reset button. Verify that HT70 continues to ventilate
and the Power Pac battery gauge (blue icon) reads at least 80%.
If battery charge level is not sufficient, plug into external power to
fully charge the Integrated Battery System.
o Remove the Power Pac battery pack. Verify that HT70 continues
to ventilate, the alarm sounds, the alarm LEDs light and the
message in the message area indicates that the Backup Battery
is in use.
o Verify that the battery gauge is now red (for internal backup
battery) and reads at least 80%. If the internal backup battery
charge level is not sufficient, re-insert the Power Pac battery and
plug into external power to fully charge the system.
o Replace the Power Pac battery pack and verify that the audible
alarm clears but the message remains.
o Reconnect the A.C. power supply into the Power Pac battery
pack and confirm that the Ext. Power LED turns green.
o Press the Alarm Silence/Reset button repeatedly until all alarm
messages are cleared.
THIS CONCLUDES THE QUICK CHECK PROCEDURE
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