Miele PG 8581 Operating Instructions Manual page 42

Chemical processes and technology
Associated process chemicals
Problem
The ingredients in process chemicals have
a significant impact on the longevity and
functionality (throughput) of dispensing sys-
tems.
Process chemicals can damage elastomers
and plastics in the machine and acces-
sories.
The following process chemicals can cause
large amounts of foam to build up:
- cleaning agents and rinsing agents con-
taining surfactants
Foam can occur:
- in the program phase in which the
process chemical is dispensed
- in the following program block if it has
been spilt
- in the following program with rinsing
agent if it has been spilt
De-foaming agents, especially silicone-
based ones, can cause the following:
- a build-up of deposits in the wash cabinet
- a build-up of deposits on the wash items
- damage to elastomers and plastics in the
machine
- damage to certain plastics (e.g., polycar-
bonate and plexiglass) in the wash items
42
Solution
- Follow the process chemical manufac-
turer's instructions and recommendations.
- Carry out a regular visual check of the
dispensing system (suction wands, hoses,
dispensing canisters, etc.) for any dam-
age.
- Regularly check the flow rate of the dis-
pensing system.
- Ensure that the regular cycle of mainte-
nance is observed.
- Please contact Miele for advice.
- Follow the process chemical manufac-
turer's instructions and recommendations.
- Carry out a regular visual check of any ac-
cessible elastomers and plastics for dam-
age.
- The process parameters in the wash pro-
gram, such as dispensing temperature,
dosage concentration, etc., must be set
to ensure the whole process is foam-free
or very low-foaming.
- Please observe the process chemical
manufacturer's instructions.
- De-foaming agents should be used in ex-
ceptional cases only; for instance, when
absolutely essential for the process.
- The wash cabinet and accessories should
be periodically cleaned without wash
items and without de-foaming agent using
Special 93°C-10'
the
- Please contact Miele for advice.
program.