Aquamedic reefdoser evo 4 calibration issues

[js-3Design]

Hey,

Hopefully someone can help me.

I bought a reefdoser 4.

But i'm unable to calibrate it. It needs to pump 50ml in max 250 seconds(?) it counts to 250 and you have te press enter when it pumped 50ml.
after 250 it stops and automaticly stores the 250 value.

The problem is that at 250 it hasnt pumped 50ml More like 35 40 ml

SO I cant use it..

Anyone had this problem and what did help?

I had a jebao doser laying arround and played with switching heads and so on.... no difference

 

[cdemoss01]

You can contact AquaMedic at this link. They made this correct?
https://www.aqua-medic.de/en/Contact