Miele PLW 8615 Operating Instructions Manual page 42

Chemical processes and technology
Reaction between process chemicals and soiling
Problem
Natural oils and fats can be emulsified with
alkaline process chemicals. This can lead to
a heavy build-up of foam.
Soiling containing high protein levels can
cause a heavy build-up of foam when pro-
cessed with alkaline process chemicals.
Non-precious metals such as aluminum,
magnesium, and zinc can release hydrogen
when processed with very acidic or alkaline
process chemicals (oxyhydrogen reaction).
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Solution
- Use the Oil program.
- Use a special program that dispenses pH-
neutral emulsifiers containing surfactants
in the pre-rinse.
- Depending on the application, use de-
foaming agents that do not contain sili-
cone oils.
- Select a cleaning program with at least
one short pre-rinse in cold water.
- Please observe the process chemical
manufacturer's instructions.