Waters 2996, Руководство оператора

Страница: 46 / 84

24 Maintenance
3
4. Remove and discard the gasket.
5. Repeat steps 1 through 4 to remove, disassemble, and clean the other lens holder
assembly.
6. Use methanol and a nonparticulating swab to clean the flow cell body.
Reassembling the Flow Cell
To reassemble the flow cell (Figure 3-3):
1. Insert a replacement gasket into one side of the flow cell body.
2. Align the screw holes of the lens assembly with the holes in the flow cell body.
3. Place the new Belleville spring washers (with the concave side facing out) onto the
lens assembly.
4. Place the flow cell disk over the lens assembly.
5. Insert the three screws using the TORX T10 driver to gradually tighten each screw,
alternating between the screws in a clockwise pattern. Tighten until the screws meet
the flow cell disk, then tighten each screw 1/4-turn. If a torque screwdriver is
available, tighten the screws to 16 in-oz (0.113 N-m).
6. Check for leaks. If you find any leaks, repeat step 5.
7. Repeat steps 1 through 5 to reassemble the other side of the flow cell.
3.1.4 Installing the Flow Cell Assembly
To install the flow cell assembly:
1. While you hold the flow cell assembly in a vertical orientation (Figure 3-2), insert
the assembly into the optics bench. Note that the flow cell is self-aligning and uses
the guide pins on the optics bench.
2. Gently push the front of the assembly until it seats on the front alignment pins.
3. Hand-tighten the thumbscrews.
4. Reconnect the fluidic lines.
STOP
Attention: Be careful not to overtighten the screws.
STOP
Attention: The alignment of the flow cell in the optics bench is critical to detector
operation. Be careful not to damage the flow cell body.