Miele Dishwasher Cuidados e manutenção - Página 15

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Corrosion - General information:

1. Soft water leaches glass more severely than hard water. This is

because as the water has a low concentration of hardening

metal ions, these can be more easily removed from the surface

of the glass.

2. The higher the water temperature, the greater the corrosive

effect.

3. The longer chemical, temperature, water and mechanical

factors are allowed to act on glass unsuitable for dishwashing,

the quicker corrosion will occur.

Types of irreversible corrosion:

1. Iridescence:

The washing out of alkaline ions causes the refraction of light to

change. The glass shimmers in bluish, greenish or brownish

tones.

2. Cloudiness (partial and over entire area):

During the manufacturing process occasional concentrations of

alkaline ions occur. When these are leached out, the result is

cloudiness. Cloudiness occurs mostly in areas where there is a

change from thick to thinner glass, below the rim and in the area

where the stem joins the bowl – sometimes, though, over the

entire surface.

3. Cord lines:

On some glasses these lines, which indicate a localized

concentration of silicon ions, are visible from the start. In other

cases these marks first become apparent with time after alkaline

ions have been leached out.

Technical Information