Electronic Gas Mixer Assembly - GE Datex-Ohmeda Aisys Carestation Reference Manual

9.5.2 Electronic
Gas Mixer
assembly
M1046983 04/08
The following procedure describes how to replace the Electronic Gas Mixer assembly.
1. Bleed all gas pressure from the machine (Section 9.2).
2. Ensure that all cylinder and pipeline pressures read zero before proceeding.
3. Loosen the mounting screws and move the dashboard to the service position
(Section 9.6).
4. Disconnect the inlet tubing or fittings from the manifold. If the machine does not
include N O, transfer the plug from the N
2
5. Disconnect the tubing from the elbow outlet fitting (A).
A
D
6. Disconnect the ribbon cable from the Pan Connector board (B).
7. Disconnect the fan harness (C).
8. Remove the two screws (D) that hold the manifold to the enclosure.
9. Remove the mounting screw (E) at the front edge of the main circuit board.
10. Temporarily remove the Ventilator Interface board to provide clearance to slide the
mixer forward and out of the pan enclosure.
11. Replace the Electronic Gas Mixer assembly and reassemble the removed
components in reverse order.
12. Load Software.
13. Zero Mixer Pressure Transducers (Section 4.5.10).
O inlet to the replacement assembly.
2
B E
Alt O
2 N O
O
2
2
9 Repair Procedures
C
D
Air
9-9