7. Maintenance
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7. Maintenance
Daily Maintenance 7-1.
In order to maintain the system in good conditions for a long period of time, it is
important to observe the following instructions.
7-1-1.Karl Fischer grease
Twin platinum electrode, inner burette, syringe inlet, desiccant tube, port plug, and
plug for titration flask are removed from a titration cell. Apply KF grease around glass
contact areas. Check those parts once a week to ensure they rotate smoothly. If not,
apply thin coating of grease. Do not apply too much grease as it may penetrate the
titration cell and increase the background owing to the water content of the grease.
Check the glass joints from time to time so that applied grease
will not solidifies.
If grease on the glass contact areas becomes hard and the respective parts are difficult
to separate, take the following steps;
1) Discharge anolyte and catholyte.
2) When using a glass port plug, warm it up with a hair dryer or something similar
to soften KF grease before removing. When using a PTFE port plug, remove
it after cooling the titration flask in a freezer for about five (5) minutes.
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