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Teledyne API - Model 200EH/EM Operation Manual Instrument Maintenance
179
7. Re-start the analyzer.
9.3.2. CHANGING THE O
3
DRYER PARTICULATE FILTER
The air for the O
3
generator passes through a Perma Pure
©
dryer, which is equipped with a small particulate
filter at its inlet. This filter prevents dust from entering the Perma Pure
©
dryer and degrading the dryer’s
performance over time. To change the filter according to the service interval in Table 9-1:
1. Check and write down the average RCEL pressure and the OZONE flow values.
2. Turn off the analyzer, unplug the power cord and remove the cover.
3. Unscrew the nut around the port of the filter using 5/8” and 9/16” wrenches and by holding the actual
fitting body steady with a 7/16” wrench.
CAUTION
Risk of significant leak. Make sure to use proper wrenches and to not turn the fitting
against the Perma Pure
©
dryer. This may loosen the inner tubing and cause large leaks.
4. Take off the old filter element and replace it with a suitable equivalent
(TAPI part# FL-3).
Figure 9-2: Particle Filter on O
3
Supply Air Dryer
5. Holding the fitting steady with a 5/8” wrench, tighten the nut with your hands. If necessary use a second
wrench but do not over-tighten the nut.
6. Replace the cover, plug in the power cord and restart the analyzer.
7. Check the O
3
flow rate, it should be around 80 cm³/min ± 15. Check the RCEL pressure, it should be
the same value as before.
04521C (DCN5731)