UNDERSTANDING - 8 - CLEANING_Unit Flow

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* 1. Enter first and last name

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* 2. Why are flow dynamics important?

If cleaning solutions move through the milking system at a velocity that is too low, the cleaning process will take longer than necessary.

If cleaning solutions move through the milking system at a velocity that is too high, the cleaning process is wasting energy.

If cleaning solutions are not adequately distributed to all parts of the milking system, the cleaning process will take longer than necessary.

If cleaning solutions are not adequately distributed to all parts of the milking system, there will be a cleaning failure.

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* 3. Field studies indicate that 3 L/min (0.8 gpm) is sufficient to clean most milking units; however, systems with milk meters or weigh jars may require ___________.

4.5-6 L/min (1.2-1.6 gpm)

3-4 L/min (0.8-1.1 gpm)

7-8 L/min (1.9-2.1 gpm)

7-8L/sec (1.9-2.1 gal/sec)

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* 4. In clean-in-place systems, milking units are either ___________.

Flooded with chemical/water mix or alternately flooded with water then chemicals.

Flooded or alternately flooded and emptied in an air injection system.

Air injected or chemical injected.

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* 5. Large components such as milk meters and recording jars are generally cleaned with a spray or sheet of water over the interior surfaces.

True

False

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* 6. Select all that apply. The flow capacity of the wash manifold is determined by:

The size of the air injector

The size of the wash sink

Lift from the wash sink

Line diameter and length

The system vacuum

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* 7. Excessive flow through the first several units can drain the wash manifold. Why is this important?

It results in little or no flow through units at the end of the line.

It results in insufficient cleaning in the first several units.

It is not important.

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* 8. Uneven distribution of water to the milking units is a very rare problem in milking parlor systems.

True

False

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* 9. The milk pump capacity is often the limiting factor in clean-in-place (CIP) systems; therefore, to avoid exceeding the capacity of the milk pump, the total water draw rate should be no more than necessary.

True

False

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* 10. Vacuum difference across milking units is a good indicator of water flow rate in full system tests.

True

False

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* 11. Adding cycled air injection to the jetter line tends to __________.

Push water to the end of the line when the air injector is open, thus increasing flow to proximal units and decreasing flow to distal units.

Push water to the end of the line when the air injector is open, thus decreasing flow to proximal units and increasing flow to distal units

Pull water to the beginning of the line when the air injector is open, thus increasing flow to proximal units and decreasing flow to distal units.

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* 12. Select all that apply. If cycled air injection is applied to the jetter line the following procedures should be applied:

The air injector should be opened just long enough to push water out of the distal unit.

The accelerated flow that occurs as the units clear should improve cleaning action in the milking unit and eliminate the need for steady air admission through the jetter.

The air injector should be closed at least long enough to flood the lines and all units.

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* 13. Select all that apply. Unusual distribution of liquid flow can be caused by:

High lift from the sink

Long pipes from the sink

Air leaks in the wash lines

Long milk-lines

Foreign objects in the wash lines

Old kinked hoses

Old flabby jetter cups

Old wash sinks

Improper strategic sampling

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* 14. If initial cleaning tests indicate that flow problems exist, a complete flow evaluation should be performed.

True

False