Miele G 7883 Operating Instructions Manual page 25

Chemical agents
Problem
The ingredients in chemical agents
have a strong influence on the longevity
and functionality (throughput) of the
dispensing system. The dispensing
system (hoses and pumps) should be
set up for a particular type of chemical
agent.
General types:
– Alkaline to pH neutral products,
– acidic to pH neutral products,
– hydrogen peroxide.
Chemical agents can damage
elastomers and plastics in the lab
washer and accessories.
The following oxidising chemical agents
can damage elastomers (hoses and
seals) and plastics in the lab washer:
– Nitric acid,
– peracetic acid,
– products containing active chlorine.
The following chemical agents can
release large amounts of oxygen:
– Hydrogen peroxide,
– peracetic acid.
Chemical processes and technology
How to resolve it
– Use Miele approved chemical agents
in this machine.
– Carry out a regular visual check of
the dispensing system for any
damage.
– Regularly check the flow rate of the
dispensing system.
– Use Miele approved chemical agents
in this machine.
– Carry out a regular visual check of
any accessible elastomers and
plastics for damage.
The wash temperature should be
limited to:
– 50 °C Nitric acid,
– 35 °C with peracetic acid,
– 80 °C with products containing
active chlorine.
– Only use approved processes such
as OXIVARIO or OXIVARIO PLUS.
– The wash temperature must be less
than 70 °C when using hydrogen
peroxide.
– Please contact Miele Service for
advice.
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