TELEDYNE API T100U, Addendum To The Operation Manual

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Teledyne API - T100U Manual, Addendum to T100 Manual P/N 06807 Troubleshooting and Service
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8.3.2 REPLACING THE UV FILTER/LENS
I
MPORTANT
I
MPACT ON
R
EADINGS OR
D
ATA
Be careful not to leave thumbprints on the interior of the sample
chamber. The various oils that make up fingerprints fluoresce brightly
under UV light and will significantly affect the accuracy of the analyzer’s
SO2 measurement.
1. Turn off the instrument’s power and remove the power cord from the instrument.
2. Unplug the J4 connector from the motherboard to allow tool access.
3. Remove 4 screws from the lamp housing cover (see Figure 8-2) and remove the
cover .
4. Remove 4 screws from the UV filter retainer.
UV Filter Retainer
Screws
Lamp Housing
UV Filter
Lamp Housing
Cover Screws
UV Filter Retainer
Screws
UV Filter Retainer
and Lens Housing
Reaction
Cell
Figure 8-2: Disassembling the Sample Chamber/UV Source Assembly
I
MPORTANT
I
MPACT ON
R
EADINGS OR
D
ATA
Never touch the filter’s surface; fingertips can leave oily residue and will
significantly affect the accuracy of the analyzer’s SO2 measurement.
Handle carefully by the outer edges.
5. Carefully remove the UV filter.
6. Install the UV filter with arrow pointing towards reaction cell. Handle carefully and
never touch the filter’s surface. The UV filter’s wider ( ring ) side should be facing
out. Install the UV filter retainer and tighten screws.
7. Install the lamp housing cover and mini-fit connector. Tighten 4 screws.
8. Re-plug J4 connector into the motherboard.
06840B DCN 6201