COM.AIR
Dew Point Monitor
04/02/2015
Rev. B
15
5.0 MAINTENANCE
5.1 ROUTINE MAINTENANCE
To ensure the maximum in accurate and reliable operation of any optical chilled mirror system,
a periodic maintenance program should be established.
5.2 MIRROR CLEANING SCHEDULE
Over time, particulates and other matter present in the sample gas and not captured by filters,
build up on the mirror. The result of the buildup of contaminants on the mirror surface is reduced
dry mirror reflectivity and a change in the optical reference point. The ABC Cycle will
automatically readjust the optics to the reference point periodically, but eventually the
adjustment range will be exceeded and a manual cleaning of the mirror may be necessary.
When the contamination becomes too much to be adjusted automatically, an error will be
displayed at the end of the ABC Cycle.
Normally, intervals of 90 days between routine mirror cleanings can be easily achieved.
However, if the sample gas contaminants are particularly high, more frequent mirror cleanings
may be required.
5.3 MIRROR CLEANING PROCEDURE (Figure 5.1)
When mirror cleaning is required as a periodic maintenance item or
the “CLN MIRR” or “CHK
SNSR” message appears on the display, proceed as follows.
1. Turn power off.
CAUTION
When operating with a pressurized sampling system, be sure to
remove pressure from the Sensor prior to removing the Sensor cover.
2. Remove the spin-off cover from the Sensor to expose the mirror.
3. Moisten a clean cotton swab with isopropyl alcohol. Cotton swabs and cleaner are provided in
the Cleaning Kit supplied with the system.
4. Wipe the mirror surface and the optics surface in a circular motion.
5. After cleaning the mirror surface, wipe the surfaces dry with a clean Q-tip.
6. Next, moisten a clean Q-tip with clean, preferably distilled water and wipe the
mirror and optics areas.
7. Dry these areas thoroughly with a clean, dry Q-tip.
8. Replace the sensor cover.
9. Re-establish sample pressure and flow.
10. Turn power on.
Содержание COM.AIR
Страница 6: ...COM AIR Dew Point Monitor 04 02 2015 Rev B 6 FIGURE 2 1 MOUNTING ...
Страница 7: ...COM AIR Dew Point Monitor 04 02 2015 Rev B 7 FIGURE 2 2ACCESS PANEL REMOVAL ...
Страница 8: ...COM AIR Dew Point Monitor 04 02 2015 Rev B 8 FIGURE 2 3WIRING CONNECTIONS ...
Страница 12: ...COM AIR Dew Point Monitor 04 02 2015 Rev B 12 FIGURE 4 1SETUP ...
Страница 16: ...COM AIR Dew Point Monitor 04 02 2015 Rev B 16 FIGURE 5 1 SENSOR COVER REMOVED FOR MIRROR CLEANING ...
