Chemical Processes And Technology; Chemical Reactions - Miele G 7825 Operating Instructions Manual

Washer-disinfector

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Operating instructions manual (68 pages)

Operating and installation instructions (52 pages)

Operating instructions manual (44 pages)

Table Of Contents

Table of Contents

Chemical reactions

In this section you will find a description of the causes of common chemical reactions

which can occur between different types of soiling, chemical agents and the components

of the machine, along with their remedies as necessary.

This section is intended as a guide. If unforeseen interactions occur during reprocessing,

or if you have any queries on this subject, please seek advice from Miele.

General notes

Problem

If elastomers (hoses and seals) and plastics

in the machine are damaged, this can lead

to, for example, swelling, shrinking, harden-

ing or brittleness of materials leading to the

development of tears and cracks. Compon-

ents can then not function correctly and this

generally leads to leaks.

Heavy foaming during a programme 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 / discolouration),

– black marks / discolouration,

– white marks / discolouration (etched sur-

face).

Corrosive pitting can lead to the washer-

disinfector not being water-tight. Depending

on application corrosion can influence

cleaning and rinsing results (laboratory ana-

lysis) or cause corrosion to stainless steel

items in the cabinet.