Teledyne 7300a - NDIR analyzer - Manual (Page 72)

5 Maintenance Model 7300A
5-2
Teledyne Analytical Instruments
4. Reassemble Housing as shown in Figure 5-1.
American Fuses European Fuses
Figure 5-2: Installing Fuses
5.1 Routine Maintenance
The 7300A should be inspected on a regular schedule to be
determined by the maintenance personnel. The system filter and
analyzer measurement cell should be maintained as required by
the quality of the sample.
Periodic calibration of the system will assure accurate analysis of the
sample gas and will also indicate the need for maintenance. A regular
calibration schedule should include recording of the zero and span pot values
for performance trends. Clogging of the sample system and other system
problems will usually show early symptoms during online analysis or during
calibration.
Problems with the system not due to the normal processing of the
sample are sometimes failures which must be corrected.
5.2 Filter
The system filter element (if included) should also be periodically
inspected. Replacement is recommended when the element begins to restrict
sample flow or upon visual inspection looks clogged and dirty.
NOTE: Although not normally included on basic Model 7300A
analyzers, input protection filtering is always recom-
mended. Refer to the system piping schematic for recom-
mended hook-up.