6-26
Electrostatic Classifier Model 3082 and SMPS Spectrometer Model 3938
T r o u b l e s h o o t i n g
Instrument status is displayed in real-time on the touch-screen display as
well as in the Aerosol Instrument Manager software. The table below
provides basic information about instrument problems and suggestions for
corrective action.
Table 6-3
Troubleshooting
Problem
Cause
Suggested Action
Low Sample Flow warning
Impactor is installed and dP is
zero because there is no inlet
flow.
Connect detector or other device to pull flow through the
aerosol inlet. Verify that polydisperse inlet of DMA is
connected to the polydisperse outlet on the classifier.
Impactor is installed and no
neutralizer is installed. Flow path
is incomplete.
If you choose to not use a neutralizer, plumb aerosol
flow directly to the DMA or install a section of ¼” OD SS
tubing in place of the neutralizer in order to complete
the flow path.
Impactor is installed and dP is
zero because the impaction plate
is missing.
Remove the impactor and insert an impaction plate into
the impactor body. See
Impactor is installed and
6006680 face-seal O-ring on
impaction plate is damaged or
missing.
Extra 6006680 O-rings are provided with the instrument.
Replace O-ring. See
Impactor Not Detected
warning
No impactor installed.
Check whether there is an inlet adapter in place instead
of an impactor.
If an impactor is in place, remove and re-insert it.
Note
: You can manually set the impactor type from the
Hardware
tab on the Properties screen.
Impactor installed but memory
chip is damaged.
Return the impactor to TSI for service.
Note
: You can manually set the impactor type from the
Hardware
screen.
High Impactor dP warning
A dP of >9.5 kPa is measured
because excessive vacuum is
being pulled through the
impactor, or because the
differential pressure sensor is
damaged.
Operate the impactor within the specified operating
range of 0-6 kPa. Operating the impactor at flow rates
that result in a pressure differential of greater than
10 kPa may result in damage to the differential pressure
sensor on the classifier.
Blower Current Error
The sheath flow blower drawing
3A or greater because the sheath
flow filters are excessively dirty
and flow is being restricted.
Replace sheath flow filters, see
The sheath flow blower drawing
3A or greater because of a flow
restriction.
Check for restrictions in the sheath flow path. Verify that
external sheath flow path is comprised of 3/8” OD tubing
(approximately ¼
” ID tubing) and that no external valves
or fittings have been added that would restrict flow.
Sheath Flow Error
Sheath flow reading is not
stabilizing within allowable
range.
Flowmeter is not functional or is
inaccurate.
The 3082 maintenance kit can be purchased from TSI
which includes a flowmeter.
Blower is not functioning
properly.
Return instrument to TSI for service.
Summary of Contents for 3082
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