Requirement:
Use eye protection when performing this procedure.
Recommendations:
• To prevent band spreading, ensure that the tubing is fully bottomed in its connection port
before tightening the compression screw.
• For easier accessibility, use long compression screws to attach tubes to the injector and vent
valve.
• Perform the solvent manager leak test whenever you replace or loosen fittings during
maintenance (see the console online Help).
• Whenever you loosen fittings during maintenance, examine for cracks, stripped threads, and
deformations.
• Do not reuse stainless steel fittings more than six times.
2.7.1.1 Assembling new fittings
For metallic (SST or MP35N) fitting and tubing assemblies with ferrules not previously assembled
or set to tubing, you must mark the compression screw and connection port and ensure that the
two marks line up when you tighten them.
Warning:
To avoid eye injury, use eye protection when performing this procedure.
Notice:
To prevent contaminating system components, wear clean, chemical-resistant,
powder-free gloves when performing this procedure.
Required tools and materials
• Chemical-resistant, powder-free gloves
• Protective eyewear
• 1/2-inch open-end wrench
• 1/4-inch open-end wrench – for tightening or loosening stainless steel (gold-plated) fittings
with two-piece ferrules
• Column gripping tool – for holding the column while tightening or loosening the dual-threaded
fitting
• Permanent marker
To assemble the new fittings:
1.
Insert the end of a tube into the hexagonal end of the compression screw.
2.
Insert the tube into the larger end of the ferrule.
3.
Insert the tube into the connection port.
April 4, 2018, 715005704 Rev. A
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