Miele PG 8504 Operating Instructions Manual page 44

Chemical processes and technology
Soiling
Problem
The following substances can damage elas-
tomers (hoses and seals) and plastics in the
cleaning machine:
- oil, wax, aromatic and unsaturated hydro-
carbons
- emollients
- cosmetics, hygiene and skincare products
such as creams (analytical applications,
filling)
The following substances can lead to a
heavy build-up of foam during washing and
rinsing:
- some disinfection agents, dishwashing
cleaning agents, etc.
- reagents for analysis, e.g., for microtiter
plates
- cosmetics, hygiene and skincare products
such as shampoos and creams (analytical
applications, filling)
- 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
44
Solution
- Depending on usage, wipe the lower door
seal on the cleaning machine periodically
with a lint-free cloth or sponge. Clean the
wash cabinet and accessories without
wash items using the
program.
- Use the Extended
powder cleaning agent on the door to re-
process the wash items.
- Thoroughly rinse wash items in water be-
forehand.
Extended
- Select the
or hot pre-cleaning).
- Depending on the application, use de-
foaming agents that do not contain sili-
cone oils.
- 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.
Regular Extended
or
program and dispense
program (with a cold