Inspecting The Sample Tubes; Troubleshooting And Service; Fault Diagnosis; Figure 14 Final Dusting - Teledyne T640 Standard Operating Procedure

6 Use canned air made specifically for dusting electronics to blow any dust or other debris
from the optics chamber, from the cup, from the bottom of the optics chamber, and from the
tubing (Figure 13).
7 When finished, reassemble optics chamber components; reinsert cup to bottom of optics
chamber; reconnect tubing from cup in bottom of chamber to RH/T sensor and from RH/T
sensor to the DFU filter, and reinstall the ASC support.
8 Close instrument and power back online.
9 Perform a PMT sensor check with the SpanDust™ (Section 4.1.4 of the T640 User
Manual).

11.6 Inspecting the Sample Tubes

Look inside the sample tubes for debris or dust on the walls. If needed, push a rag or a paper
towel through the tubes; then use canned air made specifically for electronics to blow through
the line for final cleaning. However, do not completely block a sample tube still under vacuum,
as the sample flows should never be blocked while the unit is still operating.

12.0 TROUBLESHOOTING AND SERVICE

This section provides guidance for resolving fault conditions and possible flow and calibration
problems.
1. To review Alerts, select >Alerts.
2. Document any alerts, including date and time to the "Monthly QC and Maintenance Sheet".
3. To clear alerts, select the following: >Alerts >Select >Clear Selected. Then select the home
button.
4. If alerts reappear, then there is something wrong and this need to be diagnosed. See below:

12.1 Fault Diagnosis

The Alerts log may be useful in diagnosing faults. Table 12-1 lists some of the Alerts that are
triggered by faults, describes their likely causes, and provides possible solutions.

Figure 14 Final Dusting

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DEP 03-21
Revision No. 0
November 2017