So the A2, A3 and A3N only need a sample nipple, tube and software update to comply to ICAR. The ‘older’ types of A4 need to be
updated with multiple modifications.
3 Modifications
3.1 Sample tube improvement #1,2
The inner diameter of the sample tube and nipple is changed to 4 mm. The bigger inner diameter will result in more effective mixing
end of milking and slightly improve fill time of the bottle. See #1 and 2 in the ICAR update matrix.
3.2 Water remaining improvements #3-7
A little amount of water remains during cleaning cycles. Water will remain in edges, tubes and parts. The amount of water will influence
the freezing point and is found critical on the A4 robot due to new milk pump system. Additional water collected in the stainless steel
tube under the milk jar before the milk pump will influence the mixing of the total.
The milk manifold, pre-milk, 6-fold tube, nipples and tubes are changed. Also the drain cycle during the Lely wash is improved in Robot
software version 3.0 SR2. See #3-7 in the ICAR update matrix
How to replace the parts can be found in the A4 service manual.
3.3 Software update #7
The software is changed in different versions, each version is explained below.
Version 3.0 SR2 (09-2013): A3N and A4
Together with the hardware changes, the water remaining during the Lely Wash is negligible.
The software will use an optimized drain cycle during the Lely wash, timing and vacuum level are improved.
Version 3.0 SR4 (01-2014): A3N and A4
End mixing in milk jar is improved. Longer more effective mixing end of milking.
Version 4.1 (05-2014) : A3N and A4
To ensure the milk jar doesn’t consist milk from the previous cow, the software is changed:
1. Longer pumping time during sampling process. Will ensure empty jar after milking
2. When sample process is activated on the Robot, one pump stroke will be executed.
3. When sample process is activated on the robot during milking, pump time is added to ensure empty milk jar. But sample will
be taken next milking.
The A2 Robots requires an extra 7 pins connector and the latest software version to communication with Shuttle XY.
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