Table of Contents
Advertisement
Attach tubing to the inlet and detector fittings
Check the gas fittings for leaks
WA R N I N G
Getting Started
Plumbing connections are made on the back of the pneumatics
carrier on the left side of the GC. The internal plumbing in the
GC, as delivered from the factory, depends on the kind of
detector (or detectors) on your instrument. For details, see
Appendix
B, "Factory Plumbing," starting on page 99.
Liquid leak detectors, such as soapy water, are not
recommended, especially in areas where cleanliness is very
important. If there is a leak, these liquids can contaminate the
plumbing and affect your analyses. If you do use leak detection
fluid, immediately rinse the fitting to remove the soapy film.
To avoid a potential shock hazard when using liquid detection fluid,
turn the GC off and disconnect the main power cord. Be careful not to
spill leak solution on electrical leads.
Materials needed:
• Electronic leak detector (preferred)
• Leak detection fluid (second choice)
1 Set the carrier gas pressure at the source (usually tank)
regulator to approximately 0.35 MPa (50 psi).
2 Set the FID (if present) gas pressures to the following:
•
Hydrogen = 0.35 MPa (50 psi)
•
Air = 0.35 MPa (50 psi)
3 Using the leak detector, check each fitting for leaks.
4 Correct leaks by tightening the connections. Retest the
connections; continue tightening until all connections are
leak-free.
5 Turn off the inlet and detector gases at the initial supply.
Installing the GC
41
Advertisement
Table of Contents
