Maintenance
88
Rinsing the flow paths
By keeping the flow paths inside the product clean, product failures can be prevented. When
measurement is completed for the day, rinse the flow paths inside the product with clean
solvent S-316 and pure water.
Maintenance interval guideline
When measurement is completed for the day
Items required
Measuring cylinders (20 mL) or syringes (20 mL, optional): 2 (for solvent and sample)
Clean solvent S-316 (optional)
Pure water
Rinsing procedure
1.
Check the measurement condition settings and set the measurement mode to
"MANUAL".
Reference
"Measurement condition settings" (page 23)
"Measurement Setting screen" (page 70)
2.
Press the MEAS button or up/down button until the process display on the screen
shows [Manual Measurement].
The manual measurement mode is entered.
3.
Use the measuring cylinder or measuring syringe (for solvent) to dispense 8 mL of
clean solvent through the sample inlet.
4.
Use the measuring cylinder or measuring syringe (for sample) to dispense 16 mL of
pure water through the sample inlet.
5.
Press the ENT button.
The instantaneous value measurement screen appears.
6.
Close the drainage valve and open the fill cell valve referring to "Screen operations
in the manual measurement/calibration mode" (page 14).
Cell filling starts.
7.
After approx. 60 seconds, open the fill cell valve and drainage valve referring to
"Screen operations in the manual measurement/calibration mode" (page 14).
Liquid drainage starts.
8.
After liquid drainage is finished, press the ESC button.
The start state of the manual measurement mode returns.
9.
Repeat steps 3. to 8. at least 3 times.
CAUTION
Chemical hazard (solvent S-316)
Inhalation or accidental ingestion of a large amount of solvent S-316 may be harmful.
Observe the following rules when handling:
• Ventilate the work area sufficiently.
• Wear a protective mask and protective gloves.
• Wash hands well after handling the solvent.
