Adjusting Primary Regulators - GE Datex-Ohmeda Aisys Carestation Reference Manual

Aisys
5.1.3 Adjusting Primary
Regulators
Adjust
clockwise
to increase
setting
5-8
Important: Cylinder supplies in an Aisys machine must have all primary
regulators set to the same pressure range:
(50) Pin Indexed or (60) DIN.
If a regulator is replaced, the replacement regulator must be set (as required)
to the same specification as the one removed.
Important: Install a full cylinder in the cylinder supply to be adjusted. It is
essential that the cylinder be within 10% of its full pressure.
To adjust the primary regulators, follow the procedure in Section 5.1.1 to gain
access to the regulators.
Do not attempt to adjust without flow.
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 (for O
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. Set Total Flow of the tested gas to 0.5 l/min.
6. Close the cylinder valve and allow the pressure to decay to 2068 kPa
(300 psi) as indicated on the cylinder pressure display.
7. When the cylinder gauge reaches 2068 kPa (300 psi), adjust the regulator
output pressure to:
(60) DIN 386–400 kPa (56–58 psi)
(50) Pin Indexed 327–341 kPa (47.5–49.5 psi).
Note: It may be necessary to open the cylinder valve and repeat
steps 6 and 7 a number of times to achieve the above setting.
8. Test the regulator settings per the appropriate test in Section 5.1.2:
• Test A — For primary regulators that supply drive gas to the ventilator.
• Test B — For all gases not used to supply drive gas to the ventilator.
or Air) or N2O.
2
; 0% for Air or N O).
2 2
04/08 M1046983