ORIGINAL: rcpete347

HI all, I just received a Tams smoke pump and would like to verify normal opperation.
First to get the pump to turn off on aux 2, I have to set the travell to 150 and when it is off, I get a hum.
With the aux 2, I can get the two different pump speeds, but I am concerned about the pump hum in the off position.
Tams instructions say to set aux 2 at -100 and +100, but at those setting, the pump will not turn off.
Any advice will be appreciated.
Rcpete