A5/A3™ Service Manual 046-001141-00 3 - 33
Periodic Maintenance Pneumatic Leak Tests
3.9.5 Line Pressure Gauges Accuracy Test
1. Open the rear panel and disconnect the pipe supply for all 3 gases (O2, AIR and N2O).
FIGURE 3-37
2. Disconnect hose # 47 from the regulator assembly and connect it to your high pressure meter.
3. Reconnect the O2 Pipeline supply.
4. Verify the reading on your pressure meter and the reading on the O2 pipeline pressure gauge
are within 5 psi of each other.
5. Disconnect the O2 Pipeline supply and reconnect hose # 47 to the regulator assembly.
6. Disconnect hose # 37 from the regulator assembly and connect it to your high pressure meter.
7. Reconnect the AIR Pipeline supply.
8. Verify the reading on your pressure meter and the reading on the AIR pipeline pressure gauge
are within 5 psi of each other.
9. Disconnect the AIR Pipeline supply and reconnect hose # 37 to the regulator assembly.
10. Disconnect hose # 35 from the regulator assembly and connect it to your high pressure meter.
11. Reconnect the N2O Pipeline supply.
12. Verify the reading on your pressure meter and the reading on the N2O pipeline pressure gauge
are within 5 psi of each other.
13. Disconnect the N2O Pipeline supply and reconnect hose # 35 to the regulator assembly.
14. Reconnect the pipe supply for all 3 gases (O2, AIR and N2O).
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