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(7) Start the system and enter the standby mode.
(8) Choose Setup > Service > DiagnosticTests > Valves. Set the AD value of the PEEP
valve to be larger than 50 cmH2O. Set the A/D value of the inspiration valve to 0 to
generate the flow at 0 L/min. Set the PEEP safety valve to ON, as shown in the
following figure.
(9) Then, squeeze the negative pressure ball to exhaust all gas inside. Re-install the plug and
seal the negative pressure ball. Connect another end of the negative pressure ball to
connector 1 of the drive gas pipeline of the test fixture of the corresponding circuit
transit adapter, as shown in the following figure.
(10) Release the negative pressure ball. If the negative pressure ball is completed expanded
within 30s, the drive gas pipeline test is not passed. Check the exhalation valve
assembly and the drive gas pipeline inside the system.
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