Automatic detection and adjustment of a pressure pod diaphragm

A method for automatically adjusting the positions of diaphragms in pressure pods of a dialysis treatment system, the method comprising:

• pumping blood through a flow-through fluid side of a first pressure pod, using a blood pump, the first pressure pod comprising a first diaphragm, the flow-through fluid side being disposed on one side of the first diaphragm, and a gas side being disposed on a side of the first diaphragm opposite the flow-through fluid side;
• generating first pressure signals corresponding to the pressure of blood flowing through the flow-through fluid side of the first pressure pod, over time;
• sending the first pressure signals to a controller;
• comparing, with the controller, the first pressure signals sent, with predetermined pressure signals that correspond to signals generated during normal operation of the first pressure pod, under normal operating pressures and wherein the first diaphragm is properly positioned;
• (i) releasing pressure from the gas side of the first pressure pod, (ii) pressurizing the gas side of the first pressure pod, or both (i) and (ii), based on the comparison, wherein the releasing pressure, the pressurizing, or both, are used to properly position the first diaphragm between the flow-through fluid side and the gas side of the first pressure pod;
• pumping blood through a flow-through fluid side of a second pressure pod, using the blood pump, the second pressure pod comprising a second diaphragm, the flow-through fluid side being disposed on one side of the second diaphragm, and a gas side being disposed on a side of the second diaphragm opposite the flow-through fluid side;
• generating second pressure signals corresponding to the pressure of blood flowing through the flow-through fluid side of the second pressure pod, over time;
• sending the second pressure signals to a controller;
• comparing, with the controller, the second pressure signals sent, with predetermined pressure signals that correspond to signals generated during normal operation of the second pressure pod, under normal operating pressures and wherein the second diaphragm is properly positioned;
• (i) releasing pressure from the gas side of the second pressure pod, (ii) pressurizing the gas side of the second pressure pod, or both (i) and (ii), based on the comparison, wherein the releasing pressure, the pressurizing, or both, are used to properly position the second diaphragm between the flow-through fluid side and the gas side of the second pressure pod.