Chemical Processes And Technology - Miele G 7804 Operating Instructions Manual

General notes
Problem
If elastomers (seals and hoses) and
plastics in the machine suffer damage,
they will not be watertight and will not
function correctly.
Heavy foaming during a programme
affects cleaning and rinsing results.
Foam escaping from the wash cabinet
can cause damage to the machine.
Cleaning processes cannot be
regulated and validated where there
has been a build-up of foam.
Corrosion to stainless steel in the wash
cabinet and to accessories can give
them a different appearance:
– rust (red marks / discolouration),
– black marks / discolouration,
– white marks / discolouration (etched
surface).
Corrosive pitting can lead to the
machine not being water-tight.
Depending on application, corrosion
can influence cleaning and rinsing
results (laboratory analysis) or cause
corrosion to stainless steel items in the
cabinet.

Chemical processes and technology

How to resolve it
– Establish the cause of the damage
and rectify it.
See information regarding "Chemical
agents", "Soiling" and "Reaction
between chemical agents and soiling".
– Establish the cause of the foam and
rectify it.
– Check the process used regularly to
monitor foaming levels.
See information regarding "Chemical
agents", "Soiling" and "Reaction
between chemical agents and soiling".
– Establish the cause of the corrosion
and rectify it.
See information regarding "Chemical
agents", "Soiling" and "Reaction
between chemical agents and soiling".
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