Power Supply - Dräger Medical Fabius Tiro Technical & Service Manual

Replacement Procedure
12

Power Supply

Dräger Medical AG & Co. KGaA
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The power supply is attached to the inside of the controller assembly back
panel. Figure 17 shows the mounting and connection arrangement for the
power supply.
NOTE
If the Core Unit is wall mounted, refer to the
Procedure prior to performing the following step.
1. Disconnect all pipeline hoses and set the System Power switch to 'ON'.
2. Close all cylinder valves except the O2 valve.
3. Set the oxygen flow to 5 l/min.
4. Open the other gas flow control valves to deplete the pressure from the
system.
5. Close the O2 cylinder valve and close the flow control valves. Press the
O2 Flush valve to deplete oxygen pressure from the system.
6. Set the System Power switch to 'OFF' and disconnect AC power from the
machine.
7. Detach the cylinder supply from the yoke.
8. Remove the screws securing the back panel on the controller assembly;
while supporting the panel, carefully open it as shown in the illustration.
CAUTION
The power supply contains static sensitive devices. Use ESD protec-
tion while handling this assembly.
9. Disconnect the input cable from J1 on the power supply, and disconnect
the output cable from J3 on the power supply.
10. Disconnect the ground wire from the back panel. Remove the wires from
the cable clips, and separate the panel from the machine.
11. Remove the two power supply mounting screws and lock washers hold-
ing the power supply to the panel.
12. Install the replacement power supply on the panel - oriented as shown in
the illustration.
13. While supporting the panel, reconnect the ground wire, and reconnect the
input and output cables to the power supply at J1 and J3.
14. Place the wires back in their cable clips.
15. Reinstall the back panel on the controller assembly.
16. Reconnect the pipeline and cylinder supplies and restore power to the
machine.
17. Set the main power switch to ON and verify that the power-up sequence
is successfully completed.
18. Perform the PMS procedure.
6020.002
Fabius Tiro
Wall Mount service Access
Revision B Released
175