• To kill any remaining bacteria, it is necessary to finish the daily
cleaning procedure by spraying a quarternary ammonium
solution over the area and onto surfaces (after drying), using a
300 ppm active ingredient.
• Before you resume processing the next morning or after breaks,
rinse the quarternary ammonium solution off surfaces in contact
with the raw material using clean water.
Disinfectants
When choosing a disinfecting agent, please note that chlorine corrodes
stainless steel. Chlorine is, however, an effective disinfectant, so
occasional use of chlorine may be necessary to control the growth of
microorganisms.
Marel recommends the following procedure:
• Use chlorine to disinfect once a week after performing the
regular cleaning with a high alkaline foaming detergent.
• Make sure the strength of chlorine does not exceed 200 ppm.
• Spray the disinfectant on surfaces and leave to work for
approximately 30 minutes.
• After disinfecting, carefully rinse the equipment.
• On days when chlorine is not used, use a disinfectant containing
quarter ammonium compounds instead.
• Make sure the strength of quarter ammonium compounds does
not exceed 750 ppm.
Note: Rotating different disinfectants (e. g. chlorine, peracid or acid-
anionic) in your hygiene program may ensure more effective sanitation.
As chlorine evaporates very quickly, its disinfecting effects will fade
soon after it is sprayed on the equipment. Letting chlorine stay on the
equipment will not improve the disinfecting effect, but only damage the
equipment. Quarter ammonium compounds are considerably more stable
and are active for a much longer time. Therefore, the benefit of leaving
them on the equipment for an extended period of time is much greater.
Training staff
It is important that new cleaning personnel receive proper training and
are made aware of areas on the machinery which are difficult to clean.
User’s Guide The M1100 Scale • 9
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