Miele PG 8581 Operating Instructions Manual page 43

Soiling
Problem
The following substances can lead to a
heavy build-up of foam during washing and
rinsing:
- some disinfection agents, dishwashing
cleaning agents, etc.
- active foaming agents such as surfactants
The following substances may cause corro-
sion to stainless steel in the wash cabinet
and on accessories:
- hydrochloric acid
- other substances containing chlorides,
such as sodium chloride
- concentrated sulphuric acid
- chromic acid
- particles of iron and shavings
Reaction between process chemicals and soiling
Problem
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
Solution
- Thoroughly rinse wash items in water be-
forehand.
- Select a cleaning program with at least
one short pre-wash in cold or hot water.
- Thoroughly rinse wash items in water be-
forehand.
- 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.
Solution
- Select a cleaning program with at least
one short pre-wash in cold water.
- Please observe the process chemical
manufacturer's instructions.
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