Chemical processes and technology
47
Soiling
Efficacy
Measures
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, etc.
- Concentrated sulphuric acid
- Chromic acid
- Iron particles and shavings
- Thoroughly rinse load items in water
beforehand.
- Put the drip-dry load items into the mobile
units, baskets, modules and inserts and
start a programme as soon as possible
after placing in the wash cabinet.
Reaction between process chemicals and soiling
Efficacy
Measures
Natural oils and fats can be emulsified with
alkaline process chemicals. This can lead to
a heavy build-up of foam.
- Use the
Oil programme
.
- This special programme dispenses
emulsifiers (pH neutral) in the pre-rinse.
- Depending on the application, use de-
foaming agents that do not contain
silicone oils.
Stains containing high protein levels, such
as blood, can cause a heavy build-up of
foam when processed with alkaline process
chemicals.
- Select a cleaning programme with at least
one short pre-wash in cold water.
Non-precious metals, such as aluminium,
magnesium and zinc, can release hydrogen
when processed with very acidic or alkaline
process chemicals (oxyhydrogen reaction).
- Please observe the process chemical
manufacturer’s instructions.
