8 Cleaning
To ensure the quality of sensitive fluids, pumps must be cleaned immediately
after each use. Only in this way will adhesions and deposits be removed
completely and contamination of the products be prevented. To achieve the best
possible results, Hilge pumps are optimised with regard to gap and dead spaces,
designed according to DIN EN 13951, and resistant to the cleaning agents
referred to in the following chapter. Cleaning is carried out inside the system; no
parts need to be removed or dismantled.
In general, a distinction is made between CIP and SIP. The procedures must
comply with the state of the art and the EC directives. In any case, the operator
must ensure that the target specifications are reached and applied as intended
using the cleaning and sterilisation procedures, as well as the working
temperatures and steps.
8.1 Special personnel qualification
The cleaning personnel must be suitably qualified for this work. See also
Section 2.6, Page 15.
8.2 Safety instructions
Warning!
Damage caused by cleaning agents!
► Use only suitable cleaning agents.
► Observe the safety instructions in the product descriptions of the
cleaning agents.
► Use always suitable personal protective equipment when handling
cleaning agents.
► Be sure to avoid exceeding the permissible concentrations of cleaning
agents.
► Reducing acids should not be used, because they cause pitting.
Warning!
Risk of burns!
► Do not touch the pump during cleaning. The surfaces may be very hot.
Warning!
Danger of scalding or burns.
► Do not touch the pump during steam sterilisation and the cooling phase.
Surface temperatures may rise to over 100 °C.
Caution!
Dry running of the mechanical seal!
► Do not run the pump during steam sterilisation. Destruction of the
mechanical seal!
Cleaning
Special personnel qualification
BA.280.YYY.001.GB_4
21.02.2022 41
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