Miele PG 8593 Operating Instructions Manual page 47
Laboratory glassware washer for laboratory glassware and utensils
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Also See for PG 8593:
- Operating instructions manual (188 pages) ,
- Operating instructions manual (184 pages) ,
- Operating instructions manual (180 pages)
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Soiling
Problem
The following substances may cause
corrosion 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
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
Solution
- Thoroughly rinse wash 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.
Solution
Oil program
- Use the
- This special program dispenses
emulsifiers (pH neutral) in the pre-wash.
- Depending on the application, use de-
foaming agents that do not contain
silicone oils.
- Select a cleaning program with at least
one short pre-wash in cold water.
- Please observe the process chemical
manufacturer's instructions.
.
47
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