7 Maintenance
210 July 29, 2013, 715003794 Rev. B
• Contaminant peaks appearing in the chromatogram cannot be corrected
by changing the wash solvent in the needle wash system.
Tip: For information about isolating problems in the sample management
system, see Chapter 8.
The procedure for replacing the needle and seal pack involves these tasks:
• Removing the injector
• Removing the seal pack and needle
• Removing and replacing the needle
• Installing the new seal pack and/or needle
• Installing the injector
• Adjusting the seal pack
Required materials
• Screwdrivers, T-10 and T-20 TORX
• Wrenches, 5/16-inch, open-end, two
• Squirt bottle with 100% alcohol (methanol or isopropanol)
• Screwdriver, #2 Phillips
Required kits
To replace the seal pack, you need one of the following kits:
• Seal Pack Assembly and Needle Kit (includes an assembled seal pack,
replacement needle, and instructions)
• Seal Pack Seal Replacement Kit (includes seal pack seals, frits,
replacement needle, and instructions)
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