CompactGC manual
3
Hot surfaces should be avoided
The CompactGC has heated inlets. Contacting these inlets once they are at operating
temperatures can result in injury.
The use of hydrogen
The use of hydrogen for feeding the flame in certain types of detectors requires the
operator’s extreme attention and the compliance with special precautions due to the
hazards involved in the use of this gas. Moreover, the operator shall be present while
analyses are run to immediately detect any malfunctioning. Hydrogen is a dangerous
gas (when mixed with air it may generate an explosive mixture), particularly when, in a
closed area, it reaches a concentration corresponding to its lower level of explosion
(4% in volume). For these reasons, before using hydrogen, the following
recommendations must be observed:
1.
Ensure that all hydrogen cylinders are complying with the safety conditions provided
for their proper use and storage: they must be equipped with suitable safety valves,
automatic safety systems and all that is required by current regulations even with
regard to safety in sites with danger of explosion or fire.
2.
During the connection of hydrogen lines, ensure that the gas feeding inlet is
perfectly closed.
3.
Before using the instrument, ensure that the lines designed for hydrogen are
perfectly leak-tight.
According to the results obtained, it will be possible to inspect each single section of
the pneumatic circuit as pointed out in said paragraph. Should it be necessary to
operate in the inside of the pneumatic compartment or column oven, the check shall
be carried out with all circuits under pressure. This procedure shall be repeated until all
causes of
leakage have been eliminated.
