Start of operation
200
Measuring System MAK TIGER 3003 Service manual, SA 131128, 10.03.2020
Sampler pre-rinse check
Lift the sample bottle lifting gear to filling position.
At 160 l, for example, the intake quantity is above the quantity of 19 l spec-
ified in the parameters from which a sampler pre-rinse is required.
The sampler begins the pre-rinse on the ULTRASAMPLER without flow
level meter after return signal from the MAK 3003. A milk sensor operated
by the MAK 3003 signals the start of the saltwater flow.
On the ULTRASAMPLER with flow level meter, the flow level meter signals
the start of the saltwater flow.
The sampler rinse cycle is apparent from a few revolutions of the peristaltic
pump, first in sampling direction then in the other direction, shortly after start
of intake.
Adjusting the sample bottle fill volume
Step 1:
Take in a relatively large quantity (
400 l) without restricting the pump in-
take. This quantity must accord with the default setting.
Step 2:
Check whether the pumped sample bottle volume on the display (MAK 3003
Controller) concurs exactly with the setting to within 2 - 3 ml (this has nothing
to do with the hose calibration factor at this stage!).
Adjusting the scaling
The standard setting for a flow level meter is as follows:
At NW 76 mm = 84 m³/h (4 - 20 mA at 0 - 1400 l/min)
Practice has shown, however, that the flow section of the flow level meter
(which is not always filled with liquid like the normal MID) varies somewhat
depending on the suction system (vacuum/impeller, etc.). The flow is often
5 - 10 % higher because the incoming milk is already aerated (with air bub-
bles) depending on the intake position. The parameter "Flow rate at 20 mA"
must be included in the basic settings to compensate for this.
At NW 76:
between 1300 l/min and 1500 l/min.
After changing the setting, repeat Step 1 and Step 2 until the volume levels
are roughly the same.