Piston limit sensing and software control for fluid application

A method for operating a liquid dispensing system, the method comprising:

• engaging a pump assembly of the liquid dispensing system;
• initiating, using a controller of the liquid dispensing system, a start-up sequence for the pump assembly;
• detecting, using a limit sensor, a location of a piston rod with respect to an operational axis of the piston rod;
• and
• initiating an operational loop based on the detected location of the piston rod.

A pump assembly configured to pressurize a fluid, the pump assembly comprising:

• a pump comprising a piston attached to a piston rod, wherein the piston rod is configured to move along an operational axis between a first limit position and a second limit position, wherein movement between the first and second limit position is controlled by a switch mechanism;
• a memory storing a start-up sequence for the pump assembly;
• a controller coupled to a detector, the controller configured to, upon initiation of the pump, engaged the stored start-up sequence which, when initiated, causes the detector to sense a position of the piston rod along the operational axis;
• and
• wherein the controller is configured to initiate an operational loop based on the sensed position of the piston rod.