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Teledyne API - T100 UV Fluorescence SO2 Analyzer Instrument Maintenance
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5. Take out the components of the assembly: a spring, a sintered filter, two O-rings
and the critical flow orifice.
You may need to use a scribe or pressure from the vacuum port to get the parts out
of the manifold.
6. Discard the two O-rings and the sintered filter.
7. Replace the critical flow orifice.
8. Let the part dry.
9. Re-assemble the parts as shown in Figure 11-2 using a new filter and o-rings.
10.
Rein
stall the NPT fitting and connect all tubing.
11. Power up the analyzer and allow it to warm up for 60 minutes.
12. Perform a leak check (refer to Section 11.3.6).
11.3.5. CHECKING FOR LIGHT LEAKS
When re-assembled after maintenance, repair or improper operation, the T100 can
develop small leaks around the PMT, allowing stray light from the analyzer
surroundings into the PMT housing. To find light leaks, follow the below procedures:
CAUTION
This procedure must be carried out by qualified personnel, as it must be
performed while the analyzer is powered up and running and its cover
removed.
WARNING
RISK OF ELECTRICAL SHOCK
Some operations need to be carried out with the analyzer open and
running. Exercise caution to avoid electrical shocks and electrostatic or
mechanical damage to the analyzer. Do not drop tools into the analyzer
or leave those after your procedures. Do not shorten or touch electric
connections with metallic tools while operating inside the analyzer. Use
common sense when operating inside a running analyzer.
1. Scroll the TEST functions to PMT.
2. Supply zero gas to the analyzer.
3. With the instrument still running, carefully remove the analyzer cover. Take extra
care not to touch any of the inside wiring with the metal cover or your body. Do not
drop screws or tools into a running analyzer!
4. Shine a powerful flashlight or portable incandescent light at the inlet and outlet fitting
and at all of the joints of the sample chamber as well as around the PMT housing.
The PMT value should not respond to the light, the PMT signal should remain
steady within its usual noise performance.
06807C DCN6650