3-14
3.8 Pressure Relief Valve Test
This test can be performed if ACGO is configured.
Perform the pressure relief valve test by using the following tools:
Anesthesia machine calibration device (quantity:1)
Circuit adapter test fixture (quantity:1)
Injector (100 ml) (quantity:1)
Φ
6 silicone tube (quantity:2)
PU tube (6X300) (quantity:1)
Y piece (quantity:1)
Test procedures:
1. Turn the system switch off. Close all flow regulators. Turn on ACGO.
2. Pull out the patient circuit. Mount the circuit adapter test fixture onto the circuit adapter.
3. Connect the pressure sensor connector (positive pressure end) on the anesthesia machine
calibration device and the injector (before mounting, pull out the push rod of the injector
to the graduation of 100 ml) connector to two connectors of the Y piece through two
Φ
6
silicone tubes. Connect the third connector of the Y piece to No.8 connector on the
circuit adapter test fixture through the PU tube (6X300), as shown below.
4. Push in the push rod of the injector to cause the pressure reading on the anesthesia
machine calibration device to rise slowly (note to push in the rod at uniform and slow
velocity to control the time required for the pressure reading to slowly rise to 100 cmH2O
more than 10 s). Continue pushing the push rod at uniform velocity until the rod stops.
During the course of pushing in the injector’s push rod, the pressure reading on the anesthesia
machine calibration device tends to be stable after the tested pressure relief valve is opened.
The pressure reading on the anesthesia machine calibration device after the tested pressure
relief valve is opened should be within 100 to 125 cmH2O. Otherwise, the test is failed. In
this case, you need to replace the pressure relief valve assembly (BOM number:
0621-30-69662).
Содержание WATO EX-55
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