Siemens MicroSAM, Operating Instructions Manual, Page: 77 / 138

Commissioning and operation
5.5 Shutting down
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
75
5.5 Shutting down
WARNING
Explosion hazard

Switch off the gas chromatographs when carrying out repairs or maintenance as soon
as atmospheric air penetrates into it, in other words:
– When the device is opened.
– When work is carried out on carrier gas lines and sample gas lines.

Before switching the device on again, flush the gas lines again with inert gas following
completion of the repair or maintenance work.
Note
The column system and the detector are contaminated least if the chromatograph remains in
operation. Do not shut down the device if the system is only stationary for a short time, e.g. 3
weeks. Only switch off the output devices.
If you wish to shut down the gas chromatograph, Siemens AG recommends the following
sequence:
1.
Shut off all sample streams.
2. Switch off the power supply.
3. Allow the device to cool down for 65 minutes.
4. Shut off the carrier gas.
5. If you switch off the gas chromatograph for a longer period, close all outlets and inlets
with the supplied blanking plugs. Sealing prevents oxygen or water from diffusing into the
columns.