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Detailed Repair Procedures
25. Close the N2O fl ow control valve.
26. Remove all test equipment. Reconnect the 6mm plug removed in step 19.
27. Remove the 6mm plug connected to the O2 test point and connect a
pressure measuring device to it. (Refer to step 7 for test point locations.)
28. Turn the ON/OFF switch to the “ON” position.
29. Set a fl ow of 0.5 L/min on the O2 fl ow control valve.
30. Set the O2 secondary regulator pressure to the value obtained in step 1
by adjusting the set screw using a 3mm Allen key. Secure the set screw
with the nut once the pressure is set. (Important: monitor the fl ow to
ensure that it remains at 0.5 L/min because the fl ow changes when the
set screw is adjusted.)
31. Turn the ON/OFF switch to the “OFF” position.
32. Close the O2 fl ow control valve.
33. Remove all test equipment. Reconnect the 6mm plug removed in step 27.
34. Locate the traceability label on the opposite side of the large rear panel
and change the secondary regulator settings for O2 and N2O to the new
values.
35. Reinstall the large rear panel.
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