A method of attaching and/or removing a teat cup from an animal with a liner inflatable and deflatable by a pulsator which alternately introduces air and vacuum to a pulsation chamber surrounding the liner. The method comprising the steps of: setting the pulsator to constantly introduce vacuum to the pulsation chamber to open and maintain the liner in an open position for an attachment time period attaching the teat cup to the animal during the attachment time period setting the pulsator to alternate between introducing air and vacuum to the pulsation chamber during a milking time period to milk the animal and removing the teat cup from the animal.
