Miele G 7804 Operating Instructions Manual page 29

Reaction between chemical agents and soiling
Problem
Natural oils and fats can be emulsified
with alkaline chemical agents. This can
lead to a heavy build-up of foam.
Soiling containing high protein levels
such as blood can cause a heavy
build-up of foam when processed with
alkaline chemical agents.
Non-precious metals such as
aluminium, magnesium and zinc can
release hydrogen when processed with
very acidic or alkaline chemical agents
(oxyhydrogen reaction).
Chemical processes and technology
How to resolve it
– Use programme B or C.
– Depending on application use
de-foaming agents that do not
contain silicone oils.
– Use Programme C (pre-cleaning with
cold water) where a cold water
connection is available.
– Pre-treat items to be processed if
necessary, where only a hot water
connection is available.
– Please observe the chemical agent
manufacturer's instructions.
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