Miele G 7883 Operating Instructions Manual page 26

Chemical processes and technology
Chemical agents
Problem
The following chemical agents can
cause large amounts of foam to build
up:
– Cleaning agents and rinsing agents
containing tensides,
– emulsifiers.
Foam can occur:
– in the programme block in which the
chemical agent is dispensed,
– in the following programme block if it
has been spilt,
– in the following programme with
rinsing agent if it has been spilt.
De-foaming agents, especially silicone
based ones can cause the following:
– Deposits to build up in the cabinet,
– deposits to build up on the load,
– damage to elastomers and plastics
in the lab washer,
– damage to certain plastics (e.g.
polycarbonate and plexiglass) in the
load being processed.
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How to resolve it
– Process parameters in the wash
programme, such as dispensing
temperature, dosage concentration
etc. must be set to ensure the whole
process is foam free or very low
foaming.
– Please observe chemical agent
manufacturer's instructions.
– De-foaming agents should be used
in exceptional cases only, for
instance when absolutely essential
for the process.
– The wash cabinet and accessories
should be periodically cleaned
without a load and without
de-foaming agent using the
ORGANICA programme.
– Please contact Miele Service for
advice.