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Chapter 4
46
c.
Touch the
Cum Filter Conc:
(live key) to reset the aerosol mass.
d.
Replace user serviceable filters?
Dialog will appear. Press
OK
.
e.
Reset filter concentration?
Dialog will appear. Press
Yes
to reset
the cumulative filter concentration to zero.
f.
The Setup screen will not show zero for the
Cum Filter
Concentration and
the current date for the
Filter Time
.
Storage Precautions
When storing the D
UST
T
RAK
™
monitor for more than 30 days, you should
charge and remove the batteries. This prevents damage due to battery
leakage.
This instrument must be stored in a location where the temperature remains
between –20 and 60°C (–4 and 140°F).
Touch