Miele PG 8581 Operating Instructions Manual page 42

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.
Process chemicals can damage elastomers
and plastics in the machine and
accessories.
The following chemical agents can cause
large amounts of foam to build up:
– Process chemicals and rinse aids
containing tensides
Foam can occur:
– in the program block in which the
chemical agent is dispensed,
– in the following program block if it has
been spilt,
– in the following program with rinse aid 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
– Elastomers and plastics in the washer-
disinfector can be damaged
– Damage to certain plastics (e.g.
polycarbonate and plexiglass) in the load
being processed
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Solution
– Follow the chemical agent manufacturer's
instructions and recommendations.
– Carry out a regular visual check of the
dispensing system (container lances,
hoses, dispensing containers etc.) 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 program,
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
essential for the process.
– The wash cabinet and accessories should
be periodically cleaned without a load and
without de-foaming agent using the
Special 93°C-10'
– Please contact Miele Service for advice.
program.