Waters 2489, Обзор и руководство по обслуживанию

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June 11, 2015, 715004752 Rev. A
Page 98
4.4.3 Disassembling and reassembling the flow cell
4.4.3.1 Before you begin
Take the following precautions when disassembling and reassembling the flow cell:
• To prevent contamination, wear clean, chemical-resistant, powder-free gloves
when touching the flow cell lenses or window.
• Take care to prevent scratching of the flow cell parts.
• Use a clean, lint-free cloth or a similar clean surface in the work area where you
are removing, rebuilding, and replacing the flow cell.
Required tools and materials
• Chemical-resistant, powder-free gloves
• 1/4-inch flat-blade screwdriver
• Plastic tweezers
• Torque wrench set to 0.9 N•m (128 in-oz, or 8 in-lb) with 1/4-inch flat-blade
screwdriver bit
• Ethyl alcohol or methanol
• Flow cell rebuild kit
• Lint-free swab
• Nitrogen
Save all parts after removal unless otherwise indicated. Most of the removed parts are
needed when you reinstall a flow cell.
4.4.3.2 Removing the flow cell
To remove the flow cell assembly:
1. Power-off the detector and disconnect the power cord.
2. Open the door.
3. After flushing and drying the flow cell (see
page 95 ), disconnect and cap the
inlet and outlet LC tubing to the detector.
4. Using a 1/4-inch flat-blade screwdriver, loosen the three captive screws on the
flow cell assembly front plate.
5. Gently pull the assembly toward you.
Notice:
Always replace the flow cell gaskets when cleaning, rebuilding,
or replacing other flow cell components.