Cleaning And Care; Operation Of The Column According To The Principle Of Gravity - ELECTOR PUREval MX-G Manuel De L'utilisateur

PUREval MX-G

3.5 Cleaning and care

The filters and column should be cleaned of dust and dirt particles before first time use. To do this,
hot hydrochloric acid and then distilled water are passed through the column and the filter plates.
The column should always be cleaned after use. If the filter plates are clean, cleaning the surfaces
with distilled water is sufficient. If the filter plates are contaminated, chemical cleaning with solvents or
a suitable rinsing solution should be carried out in the reverse operating direction. A flushing pressure
of >2.5 bar must be prevented. The column is then dried in the normal operating direction from top to
bottom with clean air being blown through and additionally cleaned.
Rapidly changing temperatures must be avoided to avoid glass breakage.
Note: When using hot concentrated phosphoric acid, hydrofluoric acid and hot alkalis, an enlargement
of the pores of the filter plates is unavoidable. These agents attack the glass surface and are therefore
unsuitable as cleaning agents.

3.6 Operation of the column according to the principle of gravity

The laboratory tests with the ion-exchange column can be carried out without pressure according to
the gravity principle.
The operation of the column is thus limited to direct current operation with direct current regeneration.
The following sketch shows an exemplary structure of column operation based on the principle of
gravity.
Resin
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De-aeration
Drip funnel
Hose or tube
Regulation valve
Sampling
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