A5/A3™ Service Manual 046-001141-00 5 - 41
Repair and Troubleshooting Pneumatic Circuit System Problems
FIGURE 5-37
20. Release the negative pressure ball. If the negative pressure ball is fully expanded within 30
seconds, it indicates that the gas mixer leaks.
21. For N2O branch, disconnect tube 32 and pull out its end connecting the sensor (disconnect
tube 31 for AIR branch and tube 78 for O2 branch.
22. Occlude the pulled-out tube end on the flow sensor by using 3126-06-00 tube plug.
23. For N2O branch, disconnect tube 27, pull out its end connecting gas mixer and connect it to the
gas inlet of the negative pressure ball through “3106-06-00 adapter connector” (disconnect tube
28 for AIR branch and tube 29for O2 branch). Compress the negative pressure ball to bleed the
gas inside.
FIGURE 5-38
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