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6. Monitor these pressure gauges for 15 minutes to make sure the pressure
does not decrease. If the pressure does decrease, pressure everything
back up to 15 psig and use a liquid leak detector to find the leak.
Repeat the above steps once the leak has been resolved.
7. Ensure the quartz tube in the pyrolyzer is not cracked or leaking at the
graphite ferrules. The pyrolyzer is a sealed assembly, meaning the quartz
tube could be cracked and leaking without being obvious because the
entire pyrolyzer case could pressure up.
8. Once the clean air gauges are all stable at around 15 psig, and the clean
air regulators are all backed off with pressure holding steady, remove the
¼-inch cap at the bottom of the pyrolyzer to vent the pyrolyzer case.
a. If the pressure holds, replace the cap and the clean air leak test is
complete.
b. If the pressure falls, then either the quartz tube is cracked and must
be replaced or the fittings holding the tube at the top of the
pyrolyzer need to be tightened. Care must be taken when tightening
these fittings to avoid breaking the quartz tube.
Note When replacing a quartz tube and graphite ferrules, it is advisable to
loosen the fitting while tightening and forming the soft graphite ferrule to keep
from twisting and breaking the quartz tube. The graphite will grip the quartz
tube and twist it; loosening will allow the ferrule to slip back while forming
around the quartz tube. ▲
i. Once the quartz tube is replaced, repeat the leak test and make
sure all pressures hold.
9. Flows should be checked at the 3-way valves for the three clean air
flows. These flows should be close to those recorded on the instrument
data sheet from the factory. Add the three flows together and compare
them with the flow at the PUVF vent. The flows should be within 5 to
10cc. If there is a difference of more than 10cc, check the PUVF
detector and associated tubing for leaks by tightening all fittings.
Maintenance & Troubleshooting
SOLA II Flare User Manual
Chapter 8
8-3
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Table of Contents
Troubleshooting
