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TELEDYNE API
Technical Manual - M100E UV Fluorescence SO2 Analyzer Instrument Maintenance
217
Vacuum/Pressure
Gauge
Manual Shut-Off
Valve
Needle Valve
FROM PUMP or
PRESSURIZED
AIR SOURCE
TO SCRUBBER
Figure 10-3: Simple Leak Check Fixture
1. Turn off the analyzer.
2. Disconnect the pneumatic tubing attached to both ends of the scrubber’s inner tubing.
One end is connected to the sample particulate filter assembly and the other end is connected to the
reaction cell assembly.
Both ends are made of the 1/8" black Teflon tubing.
3. Cap one end of the hydrocarbon scrubber.
4. Attach the pressurized air source to the other end of the scrubber inner tubing with the leak check fixture in
line.
Pump
or
Pressurized Air
Source
Leak Check
Fixture
Scrubber
Cap
Figure 10-4: Hydrocarbon Scrubber Leak Check Setup
5. Use the needle valve to adjust the air input until the gauge reads 15 psiA.
NOTE
Do not exceed a pressure of more than 15 psia.
Do not pull the vacuum through the scrubber.
6. Close the shut-off valve.
7. Wait 5 minutes.
If the gauge pressure drops is >1 psi within 5 minutes, then the hydrocarbon scrubber has an internal
leak and must be replaced.
Contact Teledyne API’s Customer Service.
04515F DCN6048