April 8, 2011 HN FAQ Memo, Version 3.0 Page 12 of 108
2.3 Trouble shooting on samplers.
Error types :
1. Sampler is not connected to the bus..
2. Sampler is not taking milk in.
3. Sampler is unable to empty the milk out of sampler.
4. The sample is not reaching the MV, after leaving the sampler.
5. The sample reaches the MV but is not transported further from here.
Error type 1 : Sampler is not connected to the bus..
.
action download new firmware version, remember to erase old version first.
error type 2 : Sampler is not taking milk in.
Typical causes : No vacuum, Tube has fallen of, Knife not correct mounted.
Malfunction of sampler valve.
Error type 3: Sampler can not empty the milk out again.
Typical causes: tube fallen off, top valve can not open, dump valve can not open.
Error type 4: The sample does not reach the MV.
Typical causes: tube fallen off, top valve can not open, Transfer valve can not open, Speed Valve can not
close.
Error Type 5: The sample reaches the MV, but is not transported further from here.
Typical causes: Speed valve can not open.
Trouble shooting on samplers.
Start by checking:
-Vacuum at the samplers are min. 32kPh,
-The pulsator works as it should,
-Alcom-bus is correctly connected
Start the sampler test function in the AC.
Go to the AC menu Item: 4 -> 2 -> 5 Sampler Test.
Sampler Index = the first sampler you want to test where 0 = 40 1 = 41, etc.
Number of samples. = Number of samplers from the Sample Index sampler and on, typically set to 1
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