Miele PG 8593 Operating Instructions Manual page 47

Soiling
Problem
The following substances can cause
corrosion to stainless steel in the wash
cabinet and the accessories:
- hydrochloric acid
- other substances containing chlorides,
such as sodium chloride
- concentrated sulfuric acid
- chromic acid
- particles of iron and shavings
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, such
as blood, can cause a heavy build-up of
foam when processed 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).
Chemical processes and technology
How to resolve it
- Thoroughly rinse items in water
beforehand.
- Put the drip-dry items to be washed into
the mobile units, baskets, modules, and
inserts and start a reprocessing program
as soon as possible after placing in the
wash cabinet.
How to resolve it
Oil program
- Use the
- Use a special program that dispenses
cleaning detergents containing
surfactants (pH neutral) in the pre-rinse.
- Depending on the application, use de-
foaming agents that do not contain
silicone oils.
- Select a cleaning program with at least
one short pre-rinse in cold water.
- Please observe the process chemical
manufacturer's instructions.
.
47