GE Datex-Ohmeda Aisys Carestation Reference Manual page 143

M1046983 04/08
6. High Flow Test:
a. Slowly open the cylinder valve.
b. Remove the ABS breathing system from the machine to allow
continuous Insp Valve flow through the exhalation valve.
c. Access the Ventilation Schematic (Section 12.3.3) of the Service
Application.
d. Set Gas Inlet Valve to On.
e. Adjust the Insp Flow Valve counts until the inspiratory flow value on the
schematic reads approximately 65 l/min.
f. While watching the test device, toggle the Gas Inlet Valve several times
(Off, On, Off):
• The minimum test device reading observed must be greater than:
(60) DIN 221 kPa (32 psi)
(50) Pin Indexed 207 kPa (30 psi)
• Repeat this step (6f) three times.
If the test device reading under "high flow" conditions is less than
specified, readjust the regulator per the procedure in Section 5.1.3;
however, set the regulated pressure higher by the difference you noted in
this step plus 7 kPa (1 psi). This adjusts the "low flow" regulated output to
the high side of the specification so that the "high flow" regulated pressure
can fall within the specification.
If the regulator subsequently fails the "low flow" specification (step 5d)
because the reading is too high, replace the cylinder supply.
7. Set the system switch to Standby.
8. Close the cylinder valve.
9. Bleed the system of all pressure.
10. Disconnect the test device and plug the test port (pull on the plug to
ensure it is locked in the fitting).
11. Replace the ABS breathing system.
12. Replace the rear panel.
13. Perform the checkout procedure (Section 3).
5 Calibration
5-5