6-12 | Model 931S / Model 932S UV Analyzers
8. Replace parts in the Measuring Cell:
It is critical to reassemble the Reflector Block in the exact orientation
as it was assembled at the factory.
If the Cell Windows are found to be scratched, cracked, or chipped,
replace them during reassembly. Do not operate the analyzer with
faulty parts.
9. Hold the Measuring Cell vertically with the Reflector Block end up
and install (2) new o-rings and the Window.
a. Hold the Measuring Cell vertically with the Reflector Block end up
and install two new o-rings and the Window.
Orient the Reflector Block with its “peak line” at 90° to a line
through the fittings and place it on the Measuring Cell. Ensure the
Window does not slide out of position when the Reflector Block is
placed against the Measuring Cell.
Secure the Reflector Block to the Measuring Cell with (3) M4 x 35
screws. Tighten the screws evenly.
b. Install a new o-ring in the other end of the Measuring Cell.
Replace the Window (or insert a new Window) in the Measuring
Cell.
c. Align the two larger-diameter holes in the Cell Window Housing
with the two larger-diameter holes in the Measuring Cell and connect
it to the Cell Window Housing with the (3) screws removed earlier.
Tighten the screws evenly.
10. Reconnect the sample tubing to the Measuring Cell.
11. Power up the analyzer and computer.
!
CAUTION
!
CAUTION
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