Prepare Flame Detectors If Present; Establish Sample Flow To The Maxum Ii - Siemens Maxum Edition II Installation Manual

3. When the oven heater has stabilized at the setpoint, use an appropriate bubble type or mass
flow meter to measure the flows at the detector, column, and reference vents at the sides of
the oven. This will require adjustment of the EPC pressures and column valve positions
according to the notes provided with the factory documentation.
To change the EPC setpoint at the front panel display, double-tap on the Manual Setpoint
area of the table and enter the desired pressure. Then tap on the Accept Change button at
the bottom of the screen.
To operate a column valve, tap the
appropriate valve abbreviation, e.g., CR1 on the list.
Once the correct valve is found in the list, operate it by tapping its line in the table and then
tapping the
hotkey again to operate the valve again.
Note
Valves requiring two air signals from separate solenoid valves (Valco, SLIV, etc.) will be
listed twice, e.g. CR2 ON and CR2 OFF. In this case, enabling CR2 ON will pressurize the
ON air signal and actuate the valve. Disabling this selection will depressurize the air signal;
however, the valve will still be actuated. Enable CR2 Off to de-actuate the valve then disable
it again to de-pressurize the air signal.
4. If the flows measured at the factory pressure setpoints agree with the factory flows within
nominal error expected for two different flow meters, the flow check is complete. Proper
flows will be checked again by comparison of peak retention times after generating the first
chromatograms.
5. If the flows measured at factory setpoint pressures are significantly lower than factory flows,
cool the oven and leak check as a leak is indicated. If the flows measured are significantly
higher than factory flows at the same pressure setpoints, generate chromatograms and
compare them to the factory peak retention times before deciding to establish new pressure
setpoints.
4.8

Prepare Flame Detectors if Present

For FID and FPD detectors, disable carrier gas flows and check fuel and air flows. The flows
must be measured separately. Leak check or adjust pressure setpoints if necessary. Record
any changes in pressure setpoints for inclusion in the Method settings later.
Ignite the detectors. There are multiple ways to ignite a detector, but one the easy way is to tap
the Home icon and then select
and then tap the
4.9

Establish Sample Flow to the Maxum II

1. Sample handling is where the process analysis starts. If the sample system is not
functioning properly, it is possible to have a condition in which the analyzer correctly
analyzes the sample delivered to it, but that sample does not adequately represent the
composition of the process fluid. Also, inadequate filtration by the sample system can
shorten the life of the analyzer valves.
2. Review sample system installation and startup procedures.
Installation Manual
Installation Manual, 12/2019, 2000595 Rev 1
enable/disable hotkey at the bottom of the screen. Tap the enable/disable
Detectors & Realtime Chroms , highlight the desired detector
Ignite hotkey at the bottom of the screen.
4.9 Establish Sample Flow to the Maxum II
Valves icon on the right side of the screen and find the
Initial Startup Procedures
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