DeLaval VMS 2008, Инструкция

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Operation
VMS cleaning
94897201.pdf 2007-12-18
magnesium concentration in the water.
The DeLaval detergents are capable of
giving good cleaning results when the
water hardness is lower than 30 dH. If the
hardness is higher than 30 dH, it has to
be treated.
• High levels of iron and manganese will
impair the cleaning result and should
preferably be taken care of by a water
treatment system.
• If the pH of the water is high, together
with a high alkalinity, the acid cleanings
will be less effective and the dosage of
the acid concentration will need to be
increased.
• The water should be almost free from
bacteria. E-coli types should not be
traceable at all. If so, changing the water
resource should be taken into
consideration.
• The water should be clean, clear, and
should not have a poor smell.
Detergent consumption and
concentration
Make sure that the supply of detergent is
sufficient to carry out regular cleaning.
However, do not buy large supplies since
active components decompose with time.
Sufficient concentration of detergents must
be used. At too low concentrations
impurities will not be dissolved and rinsed
out of the system.
See further under "Detergents and
detergent dosing" below.
Water temperature
Water temperature must remain within the
range 45-72 °C during the complete
circulation phase. The first figure is the
temperature of the return water at the end
of the phase, the second figure the start
temperature. A slightly higher start
temperature will not impair cleaning results.
A temperature lower than 45 °C of the
return water will, however, cause problems.
Fat will crystallise and create deposits within
the piping system that will be difficult to
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