083730510A DCN8172
Teledyne API T500U CAPS NO
2
Analyzer with NumaView™ Software
89
HARDWARE MAINTENANCE PROCEDURES
Perform the following procedures as standard maintenance per Table 5-1.
R
EPLACING THE
S
AMPLE
F
ILTER
Inspect the particulate filter often for signs of plugging or contamination..
To change the filter:
1. Turn OFF the analyzer to prevent drawing debris into the instrument.
2. Open the hinged front panel and disconnect the pneumatic fittings, using
the appropriate wrenches, and remove the disposable sample filter.
3. Insert new filter and reconnect pneumatic fittings.
4. Close the front panel
Figure 5-5. Replacing the Sample Filter
R
EPLACING THE
AREF
F
ILTER AND
C
HARCOAL
F
ILTER
The AREF filter assembly consists of the AREF filter, which is a backup particulate filter,
and the charcoal filter, which is an NO
2
gas scrubber.
1. Turn OFF the analyzer (this is important to avoid potential for contamination of
the measurement cell), unplug the power cord and remove the cover.
2. Using snips, remove the zip tie holding the pair of fittings to the mounting
bracket.
3. Using a wrench, disconnect the fitting that is connected to the AREF filter. Then
disconnect the fitting that is connected to the charcoal filter. This will free up the
AREF filter assembly.
4. Remove the AREF filter assembly from the mounting brackets.
5. Remove the fittings that connect the two filters to one another.
6. Install replacement filters and reconnect AREF assembly and fittings in reverse
order.
Summary of Contents for T500U
Page 2: ......
