BIRD MARK 7 - Page 34

OPERATIONAL
VERIFICATION
PROCEDURE
SECTION
8:
SECTION 8
OPERATIONAL VERIFICATION PROCEDURE
If the following parameters are not met, refer to
Section 7 — Calibration and Troubleshooting, of
this manual.
1.0 AIRWAY PRESSURE MANOMETER
1.1 Turn MASTER SWITCH OFF and remove test
lung from breathing assembly.
1.2 Check for zero reading on gauge.
2.0 INSPIRATORY FLOWRATE
2.1 Insert Orificed Adapter (P/N 6855) onto
breathing assembly and turn MASTER SWITCH
ON.
2.2 Rotate PRESSURE SELECTOR arm to end
of medium range and insure that the CON-
TROLLED EXPIRATORY TIME contro! is full
clockwise — OFF.
2.3 Cycle respirator “ON” and rotate
INSPIRATORY FLOWRATE control to the follow-
ing positions. Flow through the orificed adapter
should produce the parameters below:
INSPIRATORY FLOWRATE Airway Manometer
Position Pressure
Full clockwise (5:00 MARK 7
o'clock position) 18-24 cmH,0
MARK 7A
14-18 cmH,0
Full counterclockwise | MARK 7
34 emH2O or higher
MARK ZA
30 cmH,0 or higher
3.0 INSPIRATORY POWER DRIVELINE
3.1 Remove Orificed Adapter (P/N 6855) from
breathing assembly.
3.2 Insert Inspiratory Power Driveline Gauge (P/
N 6758, 0-60 psig) into INSPIRATORY POWER
DRIVELINE socket.
3.3 Cycle respiratory “ON” and recheck for
pressure reading between 12-25 psig.
3.4 Remove Inspiratory Power Driveline Gauge
(P/N 6758) and reconnect INSPIRATORY
POWER DRIVELINE.
4.0 PRESSURE-CYCLED LIMIT
4.1 Insert test lung onto breathing assembly.
4.2 Mark 7
Rotate INSPIRATORY FLOWRATE and CON-
TROLLED EXPIRATORY TIME control knobs full
clockwise.
Mark 7A
Rotate INSPIRATORY FLOWRATE and CON-
TROLLED EXPIRATORY TIME control knobs full
clockwise and insure the pressure/time cycled
selector switch is “OUT.”
4.3 Position the PRESSURE SELECTOR arm to
20 and cycle the respirator ON.
4.4 The unit should cycle off (hand timer rod
moves OUT at 20cmH,0).
5.0 STARTING EFFORT
5.1 Remove test lung and insert mouthpiece
onto breathing assembly.
5.2 Position SENSITIVITY SELECTOR arm to 20.
A slow and gentle inspiratory effort should cycle
the respirator ON at a —2cmH,0, as indicated
on manometer.
6.0 CHATTER TEST
6.1 Mark 7
Remove test lung and adjust respirator for max-
imum INSPIRATORY FLOWRATE, minimum pres-
sure, minimum sensitivity, EXPIRATORY TIME
OFF and MASTER SWITCH ON.
Mark 7A
Remove test lung and adjust respiratory for max-
imum INSPIRATORY FLOWRATE, minimum pres-
sure, minimum sensitivity, PRESSURE/TIME-
CYCLED SELECTOR SWITCH OUT,
EXPIRATORY TIME OFF and MASTER SWITCH
ON.
6.2 Respirator should chatter at a steady, even
thythm.
7.0 MARK 7A — APNEUSTIC FLOWTIME
7.1 Install test lung, adjust INSPIRATORY FLOW-
RATE to minimum, push the PRESSURE/TIME-
CYCLED SELECTOR SWITCH IN and insure
APNEUSTIC FLOWTIME control is full clockwise.
7.2. Adjust STARTING EFFORT and PRESSURE
SELECTOR arm to 20 and cycle respirator ON.
Observe a short delay (less than .5 seconds)
from the time the hand timer rod moves out until
the exhalation gate opens.
7.3 Rotate the APNEUSTIC FLOWTIME control
full counterclockwise. The delay mentioned
above should be 3.0 seconds.
7.4 Rotate APNEUSTIC FLOWTIME contro! full
clockwise, pull PRESSURE/TIME-CYCLED
SELECTOR SWITCH OUT and slide safety catch
into position.
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