BIRD MARK 7 - Inspiratory Flowrate Calibration

GALIBRATION
AND
TROUBLESHOOTING
SECTION
7:
SECTION 7
CALIBRATION AND. TROUBLE. SHOOTING
A numbering system is utilized so that one can
easily identify the steps involved with each major
operation.
Please complete each numbered step in the
sequence outlined to obtain the calibration param-
eters required. If the suggested parameters cannot
be ret, refer to the troubleshooting instructions at
the end of each system.
Special “Bird” items will be required for the calibra-
tion of the “Bird” MARK 7 and MARK 7A Respira-
tor. These special items may be obtained from Bird
Products Corporation under the following part
numbers (see Fig. 34):
ey
FIGURE 34
PART # DESCRIPTION
P/N 0042 Lubewick
PIN 0133S Positive Phase Breaihing Assembly
Ρ/Ν 0409 Test Lung
P/N 0916 Mainstream Stopper
P/N 5497 Sensitivity Adjustment Tool
P/N 6711 Tube Removal Tool
PIN 6754 Calibration Regulator
P/N 6758 0-60 PS.LG. Calibration Gauge
P/N 6855 Orificed Adapter
Units manufactured prior to November 1, 1978,
require the following part numbers for controlled
expiratory time valve update:
PART # DESCRIPTION
P/N 0122 — Packing Nut
РИМ 7736 Spring
Additional tools required for this calibration pro-
cedure include:
Ye" Allen Wrench
Y32" Allen Wrench
Ya" Nut Driver
Xe" Nut Driver
V" x TAs" Open End Wrench
Common Screwdriver (small, thin blade)
Stopwatch
NOTE: Units manufactured after June 30, 1977,
incorporate broached valves. Additionally, all
replacement valves and control knobs will be of the
broached style. When indicated during calibration, fine
adjustment of the valve stem may be accomplished
through the control knob (Fig. 35).
FIGURE 35
A. PREPARING UNIT FOR
CALIBRATION
1.0 DISCONNECT RESPIRATOR FROM
SOURCE GAS.
1.4 With MASTER SWITCH “OFF”, install calibra-
tion regulator (P/N 6754) between gas supply *
and wing nut atop centerbedy.
1.2 Turn source gas “ON”, pull red locking ring
forward and rotate regulator clockwise for a
pressure of 50 psig (static). Lock regulator by
pushing red ring back.
1.3 Secure positive phase breathing assembly
to pressure compartment.
1.4 Remove the Pressure Relief Valve (P/N 4230)
from the pressure compartment and install a
Mainstream Stopper (P/N 0916) in its place.
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