Thermo Scientific 074114, Руководство оператора

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5 • Service
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If tightening the retaining nut(s) stops the leakage, dry the cell thoroughly
with a lint-free, optical-grade tissue and go on to
Step 11 .
If tightening the retaining nut(s) does not stop the leakage, remove the
window and inspect the O-ring and groove for the cause of the leak:
•
If necessary, clean the groove and reinstall the O-ring. Dry the cell
thoroughly with a lint-free, optical-grade tissue and go on to
Step 11 .
•
If the groove is scratched, the cell must be replaced. Contact Thermo
Fisher Scientific to order a new cell.
11. Reinstall the flow cell in the optical bench.
5.6 Replacing the Flow Cell
Replace the flow cell if a colored substance stains the cell interior and
cleaning the cell (see
Section 5.2 ) does not remove the stain, or if excessive
backpressure cracks the fused silica windows and you do not want to replace
them (see
Section 5.5 ).
1. Remove the flow cell from the optical bench (see Section 5.4 ).
2. Squeeze the handle of the new flow cell and insert it straight into the optical
bench. Release the handle, and then pull it forward slightly. If there is a click,
the cell is properly mounted. If there is no click, rotate the handle slightly just
until the cell clicks into place.
3. Thread the flow cell inlet tubing through the tubing guide on the lamp cover
and reinstall the tubing bracket (see Figure 5-1 ).
4. Thread the flow cell outlet tubing through the slot on the side of the flow cell
cover. Replace the cover and reconnect the cell inlet and outlet tubing.
5. Push the detector front cover into place.