Rae MultiRAE PLUS PGM-50, Руководство по эксплуатации и обслуживанию

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MAINTENANCE
7-10
The MultiRAE Plus has a built-in sensing mechanism to
monitor the status of the UV lamp. If the UV lamp is not on,
the error message “Lamp” will be displayed. It is possible
that the UV lamp is actually on when the lamp error message
appears. When the UV lamp becomes old, changed, or the
configuration file in side the MultiRAE has been totally
over-written, the threshold level to determine lamp failure
may be wrong and cause a false alarm. To eliminate such a
possibility, simply apply some VOC by putting a felt-tip
marker close to the inlet of the MultiRAE and see if the
VOC raw count goes up. If the UV lamp is on while the
error message persists, then it is necessary to adjust the
lamp threshold. Please refer to Chapter 8 on adjusting the
threshold level for the UV lamp.
If chemical liquid or dust has been sucked into the unit,
clean the lamp window surface by wiping it with anhydrous
methanol using a cotton swab. Rub in a circular motion at
moderate pressure. After cleaning, hold the lamp up to the
light at an angle to detect any remaining film. Repeat the
process until the lamp window is clean.
Never touch the window surface with fingers or
anything that may leave a film.
(CAUTION: Water will degrade window surfaces,
especially the 11.7 eV lamp window)