Testing And Calibration; Initial Logic Pressure Tests - BIO-MED DEVICES IC-2A Service Manual

V.

TESTING AND CALIBRATION

INTRODUCTION
Perform testing and calibration on the IC-2A Ventilator whenever a component has
been replaced, after preventative maintenance, and whenever the operator suspects a
component is not operating within specifications. The following tests and calibrations
are included in this section:
a. Initial Logic Pressure Tests
b. Fail-safe Cutoff Valve Calibration
c. Demand Circuit Calibration
d. Maximum Pressure Calibration
e. PEEP/CPAP Calibration
f. Timing Calibration
g. Flow Rate Calibration
h. Pressure Gauge Calibration
Th tests and calibrations in this section include component index numbers referenced to
Figures 6-1 and 6-2 to aid in swift and accurate identification and location of parts.

INITIAL LOGIC PRESSURE TESTS

The initial logic pressure tests are performed to ensure that all tubing is securely
positioned, supply sources are within specification, and connectors, valves and resistors
are not leaking.
Perform the initial logic pressure tests as follows:
a. Place the IC-2A Ventilator face-down and connect the LOGIC GAS SUPPLY
100% 02 connector (item 15), and the PATIENT GAS SUPPLY connector
(item 17) to clean, dry, 100% oxygen at 50 psi.
b. Using an Allen wrench, remove back cover. Remove orange lug from logic
supply test port (item 26). Connect a 0 – 60 psi gauge to the logic supply test
port. Unlock the logic supply regulator (item 36) by removing the locking wire
and pulling up on the red locking ring. The black control knob should rotate
freely. Turn the OFF/ON switch to ON. Rotate the black control knob to
adjust the logic supply regulator to obtain a reading of 30 psi on the gauge.
Lock the regulator by pushing down the red locking ring and twist a locking
wire into the groove above the locking ring. Turn the OFF/ON switch to OFF,
remove the gauge, and replace the orange plug on the test port.
c. Connect a 0 – 60 psi gauge directly to the patient outlet tube (item 50). Turn
the OFF/ON switch to ON, set the FLOW RATE control to between 30 and
40, and unlock the patient supply regulator (item 35). Adjust the patient
supply regulator to obtain a maximum reading 36 psi on the gauge. Lock the
regulator, turn the OFF/ON switch to OFF, remove the gauge, and plug the
port.
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