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• Make the drain lines as short as possible.
• Make sure that the drain lines have a constant slope down (2.54 cm (1 inch) or more vertical
decrease for each 0.3 m (1 ft) length of tubing).
• Make sure that the drain lines do not have sharp bends and are not pinched.
• Do not connect the drain lines to other lines because backpressure or damage to the analyzer can
occur.
• Make sure that the drain lines are open to air.
Section 4 Startup
4.1 Set the power to on
4.2 Start the flow of sample water
Important: If the optional debubbler is plumbed to the instrument, do the steps in Adjust the PRVs in
the debubbler documentation and not the steps that follow.
1. Make sure that the seven valves in the instrument are closed. Refer to
2. Start the flow of sample to the instrument.
3. Flush the external sample line as follows:
a. Open the bypass valve (Q2-V2).
b. Let the sample water flow through the bypass tubing until the water flow removes the
construction materials in the sample line.
c. Close the bypass valve (Q2-V2).
4. Open the sample inlet and outlet valves (Q2-V1 and Q2-V3). Water flows into the instrument.
5. When there is no longer air in the instrument tubing, remove the air from the sample flow cell as
follows:
a. Put a container under the vent. Refer to
b. Open the vent valve (Q6-V1).
c. When water comes out of the vent, close the vent valve (Q6-V1).
6. Examine the instrument for leaks. Tighten the fittings to stop leaks as necessary.
7. Adjust the external shutoff valve, then the bypass valve (Q2-V2), until the sample flow meter
shows approximately 120 L/h.
Figure 7
on page 18.
Figure
8.
English 19
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