Replace The Sample Conditioning Block Filter - Hach APA 6000 Maintenance And Troubleshooting Manual

Figure 5 Mixing module parts
1 Top piece of the mixing chamber
2 Bottom piece of the mixing chamber

Replace the sample conditioning block filter

Replace the sample conditioning block filter when it has a blockage.
Items to collect:
• Filter, 0.5 µm
• Grease, high temperature, non-flammable
1. Put the analyzer in shutdown mode. Refer to
shutdown mode on page 5.
2. Stop sample flow to the analyzer.
3. Turn the knurled nut on the bottom of the sample conditioning block
and remove the filter holder. Refer to the illustrated steps in
Some sample will drain out of the sample filter conditioning block.
3 Stir bar
4 O-ring
Put the analyzer in
Figure
4. Replace the filter. Refer to
a. Remove the top quad ring from the filter holder.
b. Pull the used filter off the filter holder.
c. Push a new filter on the filter holder.
d. Install the top quad ring on the filter holder.
5. Put a thin bead of the supplied grease on the exterior surface of the
top quad ring and the O-ring so that the filter holder is easier to install
and remove.
6. Install the filter holder in the sample conditioning block. Turn the
knurled nut to fully tighten. If the filter holder is not fully installed,
unfiltered sample will enter the analyzer and cause blockages.
7. Start sample flow to the analyzer.
8. Start the analyzer. Refer to
on page 5. The analyzer automatically starts sample measurement.
6.
Figure 6.
Put the analyzer back into operation
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