PN 9000-280-VE, Rev B
Pressurizing for Leaks
1. Remove the analyzer from the process (after allowing analyzer to cool) and
pressurize it with 5 lb of air, plugging any exiting ports, the inlet probe, and
exhaust tube holes. Then go over the analyzer fittings with a leak detector
fluid.
2. If you see bubbles, it indicates a leak. If using this method be sure to
prevent the liquid from reaching the furnace. If the furnace does get wet,
allow it sufficient time to thoroughly dry.
Plugged Plumbing Check
Exercise care when working on the analyzer. Allow the unit to cool
and wear gloves.
1. Examine the inlet and exhaust for plugging problems. When possible, rod
out the probe and exhaust.
2. If this doesn’t solve the problem, disassemble the analyzer to locate the
plug. Clean the plumbing using hot water and a bottle brush.
3. When assembly is complete, check for leaks using a leak detecting liquid.
3-22 | Thermox
®
WDG-V UOP ATEX-IECEx Analyzer
