CIP assessment

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Flow through the cluster
Check to see that cleaning solution is flowing through every milking unit (cluster).  The flow should be turbulent and similar between clusters. Lack of turbulence despite apparently good flow may indicate a blocked/restricted air bleed in the cluster. Check and clear if necessary.

Air leaks between the liner mouthpiece and the jetter could also lead to reduced flow and high turbulence – depending on the size and nature of the leak.

Vacuum levels and effective reserve

Vacuum Level (Working Vacuum)
Is it appropriate for this installation? During the wash observe the vacuum gauge and compare this to what the reading is during milking (ideally they should be the same, though sometimes the vacuum level during cleaning is increased to improve cleaning performance).

For low line milking machines (where the milk line is positioned below the cows’ udders) the vacuum level should be at least 42-44 kPa.

For mid line milking machines (where the milk line is positioned level with the cows’ udders) the vacuum level should be at least 44-46 kPa.

For high line milking machines (where the milk line is positioned above the cows’ udders) the vacuum level should be at least 46 kPa.

These vacuum levels are only a guide as many factors (e.g. milk line height above the cows’ udders, pipeline sizes, cluster characteristics, milk delivery line height) will affect the appropriate vacuum level.
If the vacuum level is too low, the ability to transport the cleaning solutions through the milking plant will be compromised.

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