PMS PROCEDURE (continued) NM2C
6.12 HIGH PRESSURE REGULATOR
Minimum cylinder pressures for this test are: N2O & CO2: 600 psi
O2, Air, He, He/O2, N2: 1000 psi
6.12.1 Verify the System Power switch is ON.
6.12.2 Verify all cylinder valves are closed except the O
2
valve.
6.12.3 Set the oxygen flow to 4 liters per min.
6.12.4 Open the other gas flow control valves to drain pressure from the
system.
6.12.5 Close the O
2
cylinder valve, and press the O
2
Flush valve to drain
oxygen pressure from the system.
6.12.6 Turn the System Power switch to STANDBY.
6.12.7 Remove the table top from the machine and remove the top cabinet
drawer. Refer to replacement procedure 4.2.
6.12.8 Locate the TEE fitting in the ¼ in. diameter O
2
regulator output line,
and remove the plug from the TEE fitting.
6.12.9 Connect a dedicated O
2
test gauge to the TEE fitting.
NOTE: Two test gauges are required to avoid contamination of the O
2
circuit
from the other gases: a dedicated test gauge for O
2
, and a second test
gauge for the other gases.
6.12.10 Open the O
2
cylinder valve. Turn the System Power switch to ON, and
turn the gas selector switch to ALL GASES - if applicable.
6.12.11 Verify the oxygen flow is 4 liters per min.
( ) 6.12.12 On the test gauge, what is the regulator output press.? ___PSI (43-49)
NOTE: Leave the dedicated O
2
test gauge connected for later use in the Oxygen
Supply Pressure Alarm Test.
6.12.13 Turn the System Power switch to STANDBY.
6.12.14 For the other pressure regulators, locate their corresponding TEE
fittings in the ¼ in. diameter regulator output line, and remove the
plug from the TEE fitting (one at a time).
6.12.15 Connect the second test gauge to the TEE fitting.
Rev. U
6-26
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