Compression fitting
Column gripping tool
Column
8.
To install the replacement column, see
Column compartment plumbing connections
.
3.8 Replacing the APH assembly
Before replacing the APH assembly in the CH-A, ensure that you obtained the correct
replacement assembly for the system type, the application (SST or MP35N), and the length of the
APH-inlet tubing (32 cm or 47 cm) (12.5 inches or 18.5 inches) that you intend to use.
When replacing the APH assembly, heed the following information:
Warning:
To prevent burn injuries, set the column temperature to Off, and then allow
the column compartment and its components to cool for 60 minutes before touching
them. Monitor the column compartment's internal temperature to ensure that all
components are cool.
Warning:
To avoid personal contamination with biologically hazardous, toxic, and corrosive
materials, wear chemical-resistant, powder-free gloves when performing this procedure.
Warning:
To avoid eye injury, use eye protection when performing this procedure.
Notice:
To avoid damaging the preheater assembly,
• turn the column onto the preheater assembly when installing or removing the
column to prevent the preheater tubing from twisting;
• do not grasp and turn the preheater assembly;
• do not suspend or hang the preheater tubing.
Required tools and materials
• Chemical-resistant, powder-free gloves
• Protective eyewear
• 1/4-inch open-end wrench
• 1/2-inch open-end wrench
• Needle-nose pliers
• Replacement APH assembly
December 4, 2019, 715005052 Version 02 (previously released as Rev.B)
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