V-1
Thermo Scientific Orion 2120XP Calcium Hardness Analyzer User Guide
Chapter V
Analyzer Maintenance
The Thermo Scientific Orion 2120XP calcium hardness analyzer is
designed for simple maintenance. Follow the instructions in this section to
ensure proper operation of your analyzer.
To ensure proper maintenance and good analyzer performance, a service
logbook should be kept.
• Record the maintenance date and type of service work completed.
• Mark the date and the fluid levels of the reagent and the date when it
was replaced.
• Tag each electrode cable with the installation date of the electrode.
1. Check that the sample flow rate is 35 to 45 mL/minute. To alter
the flow rate, pull out the locking knob of the pressure regulator,
then rotate the black knob to increase (clockwise) or decrease
(counterclockwise) sample flow. Push in the locking knob of the
pressure regulator to lock the flow rate.
2. Inspect the analyzer for leakage. Diffusion tubing leakage is indicated
by a rise in the level of reagent.
3. Check that there are no error indications and that the current
concentration level is reasonable.
4. Check that the reference filling solution is adequate.
5. If required, wipe the analyzer with a damp cloth to remove dirt and
dust particles.
Maintenance Schedule
Weekly Maintenance
Recommendations
