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Process chemicals
Efficacy
The ingredients in process chemicals have
a strong influence on the longevity and
functionality (throughput) of the dispensing
system.
Process chemicals can damage elastomers
and plastics in the machine and accessor-
ies.
The following process chemicals can cause
large amounts of foam to build up:
– Cleaning and rinsing agents containing
surfactants
Foam can occur:
– In the programme block in which the pro-
cess chemical is dispensed
– In the following programme block if it has
been spilt
– In the following programme with rinsing
agent if it has been spilt
De-foaming agents, especially silicone-
based ones, can cause the following:
– Deposits to build up in the wash chamber
– Deposits to build up on the load
– Damage to elastomers and plastics in the
washer-disinfector
– Damage to certain plastics (e.g. polycar-
bonate and plexiglass) in the load being
processed
Chemical processes and technology
Measures
– Follow the process chemical manufac-
turer's instructions and recommendations.
– Carry out a regular visual check of the
dispensing system (siphons, hoses, dis-
penser canisters, etc.) for any damage.
– Regularly check the flow rate of the dis-
pensing system.
– Ensure that the regular cycle of mainten-
ance is observed.
– Please contact W&H 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-
gramme, 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 chamber and accessories
should be periodically cleaned without a
load and without de-foaming agent using
the
Special 93°C-10'
– Please contact W&H for advice.
programme.
43
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