Hach NA5600 sc Na+ Mode D'emploi 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 sure that the drain lines are open to air and are at zero back pressure. Refer to
• 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.
Figure 13 Drain lines open to air
1 Sample drain tubing
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:
26 English
11
/ -in. OD (larger) tubing to the chemical drain and case drain.
16
Figure 14
2 Drain pipe
C A U T I O N
on page 28.
Figure 15 on page 29.
N O T I C E
Figure
3 Floor drain
13.