14
Preparing the column compartments
Installation recommendations for fittings
The system uses gold-plated compression screws and two-piece ferrules. See
the diagram below for assembly orientation.
Recommendations:
• To prevent bandspreading, ensure the tubing bottoms in its fitting hole
before tightening the compression screw.
• For easier accessibility, use long compression screws to attach tubes to
the injector and vent valve.
• Whenever you loosen fittings during maintenance, examine them for
cracks, stripped threads, and deformations.
• Do not reuse stainless steel fittings more than six times.
• When installing or removing a column or optional in-line filter, always
hold the active preheater’s reusable compression fitting in place and
rotate the column or in-line filter onto the fitting.
Warning: To avoid the harmful effects of personal contact with
fittings contaminated with biologically hazardous or toxic
materials, always wear clean, chemical-resistant, powder-free
gloves when reinstalling the fittings.
TubingCompression screw
Ferrule with
locking ring
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