Chemical Processes And Technology - Miele PG 8581 Operating Instructions Manual

In this section you will find a description of the causes of common issues which can occur
between different types of soiling, process chemicals and the components of the machine,
along with their solutions as necessary.
This section is intended as a guide. If unforeseen interactions occur during reprocessing,
or if you have any questions on this subject, please contact Miele.
General notes
Problem
If elastomers (hoses and seals) and plastics
in the machine are damaged, it can lead to,
for example, swelling, shrinking, hardening
or brittleness of materials leading to the
development of tears and cracks.
Components can then not function
correctly and this generally leads to leaks.
Heavy foaming during a program affects
cleaning and rinsing results. Foam escaping
from the wash cabinet can cause damage
to the washer-disinfector.
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 / discoloration)
– Black marks / discoloration
– White marks / discoloration (etched
surface)
Corrosive pitting can lead to the washer-
disinfector not being water-tight. Depending
on the application corrosion can affect
cleaning and rinsing results (laboratory
analysis) or cause corrosion to stainless
steel items in the cabinet.

Chemical processes and technology

Solution
– 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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