Hach NA5600 sc Na+ Installation Manual page 26

3.5.10 Install modules
Add modules for additional output communications options. Refer to the documentation that is
supplied with the module.
3.6 Plumbing
3.6.1 Connect the drain lines
Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and
national regulations.
Connect the supplied
For analyzers with an enclosure, refer to
For analyzers without an enclosure, refer to
Note: Analyzers without enclosures do not have a case drain.
3.6.2 Drain line guidelines
Incorrect installation of the drain lines can cause liquid to go back into the instrument and cause damage.
• Make the drain lines as short as possible.
• Make sure that the drain lines have a constant slope down.
• Make sure that the drain lines do not have sharp bends and are not pinched.
• Make sure that the drain lines are open to air and are at zero back pressure.
3.6.3 Sample line guidelines
Select a good, representative sampling point for the best instrument performance. The sample must
be representative of the entire system.
To prevent erratic readings:
• Collect samples from locations that are sufficiently distant from points of chemical additions to the
process stream.
• Make sure that the samples are sufficiently mixed.
• Make sure that all chemical reactions are complete.
3.6.4 Sample requirements
The water from the sample source(s) must agree with the specifications in
Keep the sample flow rate and operating temperature as constant as possible for best performance.
3.6.5 Plumb the sample lines
Explosion hazard. Use only the supplied regulator from the manufacturer.
1. Connect the sample lines as follows:
a. Identify the sample inlet and the sample bypass drain for Channel 1.
For analyzers with an enclosure, refer to
For analyzers without an enclosure, refer to
26 English
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/ -in. OD (larger) tubing to the chemical drain and case drain.
16
Figure 13
C A U T I O N
on page 28.
Figure 14 on page 29.
N O T I C E
C A U T I O N
Figure 13.
Figure 14.
Specifications on page 3.