Datex-Ohmeda Anesthesia Delivery Unit S/5, Technical Reference Manual

Page: 372 / 494

Datex-Ohmeda ADU
C-46
Document No. 8502855
Inlet pressure regulator adjustment
This adjustment is to set the ventilator operation pressure.
Equipment needed: Pressure test device
Pressure connector (735096)
Tools: Wrench
Cross-head (Pozidriv) screwdriver
Settings Pipeline gases connected
Manual mode
Figure 37 Inlet pressure regulator adjustment
1. Enter P+ high range function on the test device keypad.
2. Remove the ADU back plastic cover (10 Allen screws) and open the rear cover of the Ventilator
(2 screws) Open and connect the pressure connector with a tube between the test device
positive high range and the test connection, see Figure 38 on page C-46.
Figure 38 Rear part of the Electronic Ventilator uncovered
3. Turn on the ADU and bypass the System Check.
4. If an adjustment is necessary, adjust the inlet regulator item to 2.7 bar ±0.1. (39.16 psi ±1.45).
Clockwise adjustment increases while counter-clockwise adjustment decreases the press.
5. Refit the cover and perform the needed calibrations according to the calibration tree.
Pneumatic test connector for inlet pressure