Fisher & Paykel DishDrawer DD603I Integrated, Руководство пользователя

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Soda Lime Glass
Soda lime glass is composed of pure silica glass, lime oxide, soda oxide and sometimes
potash. This is the most widely used type of glass. It is inexpensive to make and commonly
found in household items like drinking glass, bottles and window glass.
Lead Glass
Substituting lead oxide for lime oxide, the glass becomes soft at lower heating
temperatures. Lead glass reflects more light than making it more desirable for cut glass
pieces. This glass will not withstand high or sudden change in temperatures
Borosilicate Glass
A combination of pure silica glass, boric oxide and aluminium oxide. Borosilicate glass has
about 1/3
rd
the thermal expansion of soda lime glass. Borosilicate is more resistant to heat
expansion, it is used for cookware, bakeware and laboratory glassware
Ceramic Glass
Ceramic glass contains pure silica glass and aluminium oxide. Glass ceramics are made by
what is essentially a process of controlled devitrification (Glass is heated and held at an
intermediate temperature for an extended period, partial crystallisation can occur, if the
glass is 50% or more crystallised then it is ceramic glass). When a glass ceramic object is
made, it is formed as an ordinary glass article. Devitrificiation takes place after the article
is formed which, makes a strong and opaque ceramic. Unlike ordinary ceramics, ceramic
glass is non-porous has a greater strength and scratch resistance. Glass ceramics are 40%
harder than borosilicate and resists expansion or contraction when subjected to heat or
extreme cold.
Caring for Glassware
Washing Glasses in Hard Water.
If insufficient quantities of detergent are used it will not tie up the calcium and magnesium
ions in the water, leaving white spots and film on glasses, as well as other dishware and
inside the machine.
For effective cleaning to take place enough detergent must be added to tie up the hard
water. Check the User Guide for the correct quantities.
Softened Hard Water.
Silica film, etching, streaking and filming from dissolved solids are problems common in
softened hard water. In the softening process calcium and magnesium ions are replaced
with sodium ions. In this exchange process the total dissolved solids content is increased.
Due the high solids content glasses washed in the dishwasher may have streaks and film.
Silca filming usually precedes etching. It can be identified by its iridescence when the glass
is held to the light. As silica film becomes heavier the glass becomes opaque. A number of
variables like soft water, insufficient rinsing, drying temperatures and the components of
glass cause silica film. Silica film cannot be removed.
White film that is insoluble in acid is silica film or etching. If the film can be removed by
acid it is caused by hard water. Hard water filming can happen when the water softener
requires regeneration.
Etching of soda lime glass is the removal of metal ions by alkaline wash solution. Once the
ions are removed they cannot be replaced. Water that contains calcium or magnesium ions
protect the glass. Etching only occurs in soft water situations. Etching first appears as
scratches on the glass as the etching gets worse and appears to have a heavy irregular film