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Chapter 4
Maintenance
The DustTrak II aerosol monitor can be maintained in the field using the
instructions below. Additionally, TSI recommends that you return your
DustTrak II monitor to the factory for annual calibration. For a reasonable fee,
we will quickly clean and calibrate the unit and return it to you in “as new”
working
condition, along with a Certificate of Calibration. This “annual
checkup” helps ensure that the DustTrak II monitor is always in good
operating condition.
W A R N I N G
There are no user-serviceable parts inside this instrument.
The instrument should only be opened by TSI or a TSI
approved service technician.
Maintenance Schedule
The DustTrak II Aerosol Monitor requires maintenance on a regular basis.
Table 4
–1 lists the factory recommended maintenance schedule.
Some maintenance items are required each time the DustTrak monitor is
used or on an annual basis. Other items are scheduled according to how
much aerosol is drawn through the instrument. For example, TSI
recommends cleaning the inlet sample tube after 350 hours of sampling a
1 mg/m
3
concentration of aerosol. This recommendation should be pro-rated
according to how the instrument is used. 350 hours at 1 mg/m
3
is the same
amount of aerosol as 700 hours at 0.5 mg/m
3
or 175 hours at 2 mg/m
3
, etc.
Table 4
–1. Recommended Maintenance Schedule
Item
Frequency
Perform zero check
Before each use.
Clean inlet
350 hr. at 1 mg/m
3
*
Clean 2.5 µm calibration impactor
Before every use.
Replace internal filters
350 hr. at 1 mg/m
3
* or when
indicated by the main screen
filter error indicator.
Return to factory for cleaning and
calibration (For 8530EP, TSI recommends
that both the DustTrak and the External
Pump Module be returned to TSI)
Annually
Replace the internal HEPA filters in the
External Pump module
Annually
*Pro-rated, see discussion above.
