GE Datex-Ohmeda Aisys Carestation Reference Manual page 142

Aisys
5-4
Test A
For primary regulators that supply drive gas to the ventilator (O
Under low flow conditions, the output pressure of a properly adjusted/
functioning regulator should fall within specifications listed in step 5d.
Under high flow conditions, the output pressure should not drop below the
specifications listed in step 6f.
1. Access the Gas Delivery Schematic (Section 12.3.2) of the Service
Application.
2. If required,
• set Gas Delivery Mode to Fresh Gas.
• set Balance Gas to Air.
3. Adjust the O2 Concentration so that 100% of the gas flow will be through
the regulator being tested (100% for O
4. Slowly open the cylinder valve for the regulator being tested and observe
the pressure reading for the cylinder.
5. Low Flow Test:
a. Set Total Flow of the tested gas to 0.5 l/min.
b. Close the cylinder valve and allow the pressure to decay to 2068 kPa
(300 psi) as indicated on the cylinder pressure display.
c. At the time that the cylinder pressure reaches 2068 kPa (300 psi), set
Total Flow to 0.00 l/min to turn off gas flow.
d. Within one minute, the test device reading must stabilize between:
(60) DIN 372–400 kPa (54–58 psi)
(50) Pin Indexed 310–341 kPa (45.0–49.5 psi).
- If the test device pressure does not stabilize within one minute,
replace the cylinder supply.
- If the test device stabilizes within one minute, but the readings are
not within specifications, readjust the regulator (Section 5.1.3).
or Air):
2
; 0% for Air).
2
04/08 M1046983