Getting Started
74 Agilent 240/280 Series AA User’s Guide
Pre-analysis Checklist
The general preparation procedure is as follows:
1 Install all the required hardware, including any associated
accessories such as SIPS, according to the instructions in the
Help (see Page 67) and any accessory manuals.
2 Turn on the instrument and any peripheral accessories as
described in the previous section.
3 Ensure the exhaust system is working. To do this, hold a thin
single-ply tissue up to the mouth of the extraction hood. The
tissue should be drawn towards the hood.
4 Check the gas supplies to make sure you have enough gas to
complete your analysis. You must also check that the acetylene
cylinder pressure is above 700 kPa (about 100 psi) to ensure that
acetone is not drawn into the instrument.
5 Set the delivery pressure of the gases to the following:
Recommended Permissible
kPa psi kPa psi
Acetylene 75 11 65-100 9.5-14.5
Air 350 50 245-455 35-65
Nitrous oxide 350 50 245-455 35-65
6 Inspect the gas hoses for damage, replacing any damaged hoses.
Turn on the gas supplies to your instrument and test all hoses
and connections for leaks. If a leak is found, repair it
immediately.
7 Load a worksheet and develop the method(s) as per your
analytical requirements.
8 Optimize the system.
9 Start an Autorun.
NOTE
Detailed procedural help for Steps 7 to 9 are provided in the Help. See Page 67
for details of how to find information in the Help.
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