PerkinElmer 200 UV/VIS Series, User Manual

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Maintenance Routine Maintenance
7 - 6
Disassembling and Cleaning the Flowcell
If the flowcell shows signs of leakage around the flowcell apertures, or if the flowcell win-
dows are cracked or too dirty to clean by flushing, then the cells should be disassembled and
rebuilt.
1. Remove the flowcell as described above.
Be sure to remove the flowcell with the attached tubing as a unit before loosening the
tubing from the flowcell.
2. Loosen the three slotted flat head screws on the exit aperture gradually and uniformly
until the aperture pressure on the flowcell windows is removed. Remove the screws com-
pletely. Also remove the apertures and the windows from both sides.
Flowcell windows may occasionally be difficult to remove from their recessed seats in the
Kel-F flowcell body. If this is the case, tap the flowcell gently on a hard surface.
3. Examine the windows carefully for any cracks or imperfections. Undamaged windows
can be cleaned by first washing with water for salt crystallization or with acetone or chlo-
roform and then rinsing with methanol. Allow the windows to dry before replacing.
Figure 7-3. Exploded view of a flowcell.