Miele PLW 8616 Operating Instructions Manual page 44

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.
Stains containing high protein levels, such
as blood, can cause a heavy build-up of
foam when processed with alkaline process
chemicals.
Non-precious metals, such as aluminium,
magnesium and zinc, can release hydrogen
when processed with very acidic or alkaline
process chemicals (oxyhydrogen reaction).
44
Measures
- Use the Oil programme.
- Use a special programme that dispenses
pH-neutral emulsifiers containing surfact-
ants in the pre-rinse.
- Depending on the application, use de-
foaming agents that do not contain silic-
one oils.
- Select a cleaning programme with at least
one short pre-rinse in cold water.
- Please observe the process chemical
manufacturer's instructions.