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11. INSTRUMENT MAINTENANCE
For the most part, the T400 analyzer is maintenance free, there are, however, a minimal
number of simple procedures that when performed regularly will ensure that the T400
photometer continues to operate accurately and reliably over its lifetime.
Repairs and troubleshooting are covered in Section12 of this manual.
11.1. MAINTENANCE SCHEDULE
Table 11-1 shows a typical maintenance schedule for the T400. Please note that in
certain environments (i.e. dusty, very high ambient pollutant levels) some maintenance
procedures may need to be performed more often than shown.
Note A span and zero calibration check (see CAL CHECK REQ’D Column of
Table 9-1) must be performed following some of the maintenance
procedures listed below.
- To perform a CHECK of the instrument’s Zero or Span Calibration
follow the same steps as described in Section 9.3.
- DO NOT PRESS THE ENTR BUTTON
at the end of each operation.
Pressing the ENTR button resets the stored values for OFFSET and
SLOPE and alters the instruments Calibration.
- Alternatively, use the Auto cal feature described in Section9.4 with the
wi
th the CALIBRATE ATTRIBUTE SET TO OFF
WARNING - Electrical Shock Hazard
RISK OF ELECTRICAL SHOCK. DISCONNECT POWER BEFORE PERFORMING
ANY OF THE FOLLOWING OPERATIONS THAT REQUIRE ENTRY INTO THE
INTERIOR OF THE ANALYZER.
CAUTION
Qualified Personnel
THE OPERATIONS OUTLINED IN THIS SECTION ARE TO BE PERFORMED BY
QUALIFIED MAINTENANCE PERSONNEL ONLY.
06870C DCN6332