BIRD MARK 7 - Airway Pressure Manometer Calibration

6.0 PRESSURE COMPARTMENT ASSEMBLY
6.1 Reassemble the magnet and pressure
radius arm as follows:
w Inspect O-ring (P/N 0138) on pressure mag-
net assembly (P/N 0752) for fiat spots, cuts or
damage. Replace if necessary.
m Place a drop of lubricant (P/N 0631) on O-
ring (P/N 0138) prior to installation.
m install magnet assembly into Pressure Com-
partment by turning in a CLOCKWISE direc-
tion until the travel stops.
= Using a 952" allen wrench, secure the pres-
sure radius arm assembly (P/N 0190) to the
magnet, with the radius arm positioned at the
extreme end of the low pressure range.
6.2 Reinstall “L” shaped Pressure Compartment
seal (P/N 6813) in place on Centerbody.
6.3 Spread a thin layer of Lubewick (P/N 0042)
on exposed surface area of seal prior to installa-
tion of Pressure Compartment.
6.4 Install Pressure Compartment and secure in
place with 346” allen screw and washer at top
stud, and %s” power socket and seal at bottom
stud.
7.0 AMBIENT COMPARTMENT ASSEMBLY
7.1 Reassemble the magnet and sensitivity
radius arm as follows:
m Install magnet assembly (P/N 0324) and
yoke (P/N 0179) into Ambient Compartment
by turning in a CLOCKWISE direction until the
travel stops.
m Using a %2" allen wrench, secure the sen-
sitivity radius arm assembly (P/N 0190) to the
magnet, with the radius arm positioned at the
extreme end of the decreased STARTING
EFFORT range.
7.2 Install manometer into Ambient Compart-
ment and secure in place with mounting bracket
and two (2) %" nuts.
7.3 Reconnect manometer tube (25) to Center
body quick-disconnect stud.
74 Carefully slide Ambient Compartment over
hand timer rod until seated against the Center
body (Fig. 33).
NOTE: Make sure the venturi tube is positioned into
the ambient filter inlet port.
FIGURE 33
75 Use a %e" allen wrench and socket screws
(2) with washers to secure Ambient Compart-
ment in place.
7.6 Ambient Filter Assembly.
m Insert nylon mesh filter (P/N 5559) into filter
holder (P/N 5560), then press the filter holder
into the filter seal (P/N 2524).
m Secure the above assembly to the filter
housing (P/N 4098) with Phillips screw (P/N
4368).
m Reinstali the ambient filter assembly to the
Ambient Compartment.
The unit should be completely assembled and
ready for calibration.
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