Rotor assembly with removable rollers

A method of loading a piece of tubing into a peristaltic pump, the method comprising:

• providing a pump rotor assembly, the pump rotor assembly comprising:
• a hub configured to couple with a drive shaft of a pump, the drive shaft having an axis of rotation, the hub comprising at least a first hub interface surface that extends in an axial direction parallel to the axis of rotation and an axial face that is transverse to the axial direction;
• a first roller assembly comprising a first support frame, a first axle and a first roller, the first support frame defining a first arm, the first roller assembly configured to slide in the axial direction along the first hub interface surface, wherein the hub forms a first mating seat configured to receive and limit movement of at least a portion of the first arm;
• and
• a lock configured to couple with the hub, wherein the lock has a first position wherein the lock blocks the first roller assembly from separating from the first hub interface surface;
• coupling the hub of the pump rotor assembly to the drive shaft of the pump;
• placing the piece of tubing between the hub and a housing of the pump with the first roller assembly not engaged with the first hub interface surface;
• positioning the first roller assembly into engagement with the hub, so that the first hub interface surface engages the first roller assembly;
• securing the first roller assembly with respect to the hub, so that the first hub interface surface is engaged with the first roller assembly;
• and
• rotating the hub to compress the tubing against the housing with a roller of the first roller assembly.