Soiling
Problem How to resolve it
The following oxidising chemical agents
can damage elastomers (hoses and
seals) and plastics in the machine:
–
oil, wax, aromatic and unsaturated
hydrocarbons,
–
cooling lubricant, cutting/drilling oil and
emulsions,
–
emollients,
–
cosmetics, hygiene and care products
such as creams (analytical
applications).
–
Depending on usage, wipe the
lower door seal on the machine
periodically with a lint-free cloth or
sponge.
Clean the wash cabinet and
accessories without a load using
the ORGANICA programme (if
available) or a special programme.
–
Prepare the load
using the "OIL" programme (if
available) or use a special
programme that dispenses
emulsifiers.
The following substances can lead to a
heavy build-up of foam during washing
and rinsing:
– fluxing agent,
– cooling lubricant, cutting/drilling oil and
emulsions,
– agents such as disinfecting agent and
dishwashing detergent etc.
–
reagents for analysis e.g. for microtiter
plates,
–
cosmetics, hygiene and care products
such as shampoos and creams
(analytical applications),
–
active foaming agents such as
tensides.
– Thoroughly rinse items in water
beforehand.
– Select a cleaning programme with
at least one short pre-rinse in cold
or hot water.
– Depending on application use
de-foaming agents that do not
contain silicone oils.
The following substances cause corrosion
to stainless steel in the wash cabinet and
on accessories:
–
hydrochloric acid,
–
other substances containing chlorides
such as sodium chloride etc.,
–
concentrated sulphuric acid,
–
chromic acid,
–
particles of iron and swarf.
–
Thoroughly rinse items in water
beforehand.
–
Place items drip dried into mobile
units, baskets and inserts and then
place these in the wash cabinet.
Chemical processes and technology
32
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