CALIBRATION / OPERATIONAL VERIFICATION PROEDURE
5-10 SERHT50NA A0808
LOW ▼Paw ALARM
1. Disconnect the test lung from the breathing circuit and verify
that after 2 breaths, both an audible and visual Low ▼Paw
Alar
m occurs.
2. Attach the test lung to the breathing circuit and verify that the
audible alarm ceases. Press the Silence/Reset button to clear
the visual alarm.
CHECK PROX LINE ALARM
1. Disconnect the Proximal Airway Pressure Line at the ventilator
connection and verify that both an audible and visual Check
Prox Line Alarm occurs.
2. Reconnect the Proximal Airway Pressure Line to the ventilator.
Verify that the audible alarm ceases. Press the Silence/Reset to
clear the visual alarm.
BATTERY TEST
NOTE: Before proceeding with this test, ensure that the HT50 has
been connected to an external power source for the purpose of
charging the Int. Battery.
1. Press and hold the Int. Battery button. Verify the charge level on
the Paw meter is in the blue area, and there is no “Charge
Fault” message in the Message Display Window.
2. Disconnect the A.C. power cord, verify the “Ext. Power” visual
and audible alarm occurs, the charging indicator illuminates red,
the Int. Battery indicator turns on, and “No Ext. Power” message
is displayed in the Message Display Window.
3. Silence the alarm. Press and hold the Int. Battery button. Verify
the charge level on the Paw meter is in the blue area after 5
minutes.
4. Reconnect the AC. power cord, verify the Int. Battery LED turns
off and the Ext. Power LED indicator changes to green.
5. Repeat steps 2-4, allowing 90 seconds to elapse prior to
reconnecting to AC power. Verify the HT50 switches back to
A.C. power between 30 and 90 seconds later.
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