Miele PG 8504 Operating Instructions Manual page 44

Chemical processes and technology
Chemical agents
Problem
The ingredients in chemical agents have a
strong influence on the longevity and
functionality (throughput) of the dispensing
system.
Chemical agents can damage elastomers
and plastics in the machine and
accessories.
The following chemical agents can cause
large amounts of foam to build up:
– Cleaning agents and rinsing agents
containing tensides.
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
machine,
– damage to certain plastics (e.g.
polycarbonate and plexiglass) in the load
being processed.
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How to resolve it
– Follow the chemical agent manufacturer's
instructions and recommendations.
– Carry out a regular visual check of the
dispensing system for any damage.
– Regularly check the flow rate of the
dispensing system.
– Ensure that the regular cycle of
maintenance is observed.
– Please contact Miele Service for advice.
– Follow the chemical agent manufacturer's
instructions and recommendations.
– Carry out a regular visual check of any
accessible elastomers and plastics for
damage.
– 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
or programme.
Medium Long
– Please contact Miele Service for advice.