Pneumatic pump start, indeed confirmed feedstock through a homogenizer, a return line can not be confirmed when the confirmation (presence or absence of material flow from the return line).
Start the pneumatic pump, confirm the raw material to really pass through the homogeneium, can not be confirmed by the return line confirmation (whether there is raw material spout from the return line).
Start the pneumatic pump and confirm that the raw material passes through the homogenizer. If it cannot be confirmed, it can be confirmed by the return line (if there is any raw material flowing out of the return line).<br>