BIRD MARK 7 - Pressure Relief Valve Verification

8.0 CONTROLLED EXPIRATORY TIME
8.1 Insure test lung is attached to breating
assembly.
8.2 Adjust STARTING EFFORT SELECTOR to
20, position the PRESSURE SELECTOR to 20
and rotate CONTROLLED EXPIRATORY TIME
control to the 12:00 o'clock position.
8.3 Check for a 3.0 second (+ .5 sec.) delay
from the opening of the exhalation valve (respira-
tory OFF) until it closes (respirator ON).
8.4 Rotate the CONTROLLED.EXPIRATORY
TIME knob full counterclockwise and check for
a 5 to 1 second expiratory time.
8.5 Rotate this control full clockwise OFF and
insure respirator does not cycle for at least 3
minutes.
一 33 一
9.0 PRESSURE RELIEF VALVE
9.1 Remote test lung from the breathing assem-
bly and position PRESSURE SELECTOR arm full
clockwise.
9.2 Cycle respirator ON and occlude end of
breathing assembly.
9.3 Observe pressure manometer for stabiliza-
tion of needle at 30 cmH,0 pressure or adjust to
desired relief pressure.
9.4 Adjust PRESSURE SELECTOR arm back to
20.
9.5 Turn MASTER SWITCH OFF and source gas
OFF
‘8
NOILLDAS
ヨロ
ロロ
ヨコ
ロロ
gd
ΟΙ
ΟΙΗΙΗΞΛΑ
TYNOLLVUSdO