ADJUSTMENT AND CALIBRATION PROCEDURES (continued) NM2C
5.1 Cylinder Pressure Regulator Adjustment (except CO
2
)
5.1.1 Disconnect all pipeline hoses and set the System Power switch to ON.
5.1.2 Close all cylinder valves except the O
2
valve.
5.1.3 Set the oxygen flow to 4 liters per min.
5.1.4 Open the other gas flow control valves to drain pressure from the
system.
5.1.5 Close all of the flow control valves and press the O
2
Flush valve to
drain oxygen pressure from the system.
5.1.6 Set the System Power switch to STANDBY.
5.1.7 Remove the table top from the machine and remove the top cabinet
drawer.
NOTE: Minimum cylinder pressures for this adjustment shall be:
N2O & CO2: 600 psi; O2, Air, He, He/O2, N2: 1000 psi.
5.1.8 Locate the TEE fitting in the ¼ in. diameter regulator output line,
and remove the plug from the TEE fitting.
5.1.9 Connect a test gauge to the TEE fitting.
5.1.10 Open the cylinder valve and set the System Power switch to ON.
5.1.11 Set the gas flow to 4 liters per min.
5.1.12 Remove the acorn nut on the bottom of the regulator to expose the
adjusting screw. Turn the screw until the test gauge indicates 46 psi.
[On Canada machines, set the pressure to 50 psi for O
2
,N
2
O and Air.]
5.1.13 Replace the acorn nut on the bottom of the regulator.
5.1.14 Close the cylinder valve and allow pressure to drain from the system.
5.1.15 Close all of the flow control valves and set the System Power switch
to STANDBY.
5.1.16 Disconnect the test gauge from the TEE fitting and replace the plug
in the fitting.
5.1.17 Replace the table top and its retaining screws.
5.1.18 Replace the top drawer in the cabinet.
5.1.19 Connect the pipeline hoses.
5.1.20 Perform the PMS Procedure given in Section 6.
Rev. S
5-2
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