When you are fitting your pump head, rotate the tubing to one of these four directions, and fit the head to the pump. The NE-9000 family of pumps can have their output tubing orientated in four directions, Bottom, Top, Left and Right. This end is formed as a flat blade which engages in the rotor – the rotor diagram shows the t shaped receptacle in the rotor’s centre. Receives the pump head which clips onto it. More details on the front panel.īase is mounted permanently on the pump. This is where humans can press buttons to program and operate the pump. The cassette containing tubing and a rotor ready for fitting to the pump – Pump head. They lock into recesses in the cassette and prevent the tubing from ‘creeping’ along as the rotor’s rollers kneed the tubing. These wraps create a mechanical connection to the outside of the pump tubing. This shaft connects to the pump’s motor inside the red case to the rotorĬontains a number of rollers (depending on head model clear, blue, green) which turn with the rotor squeezing the tubing creating a peristaltic pumping action. For example, considering the outlet flow, as the roller moves away from the tube it expands back from flat to its original shape.Removable shell that contains the tubing and rotor – during operation the tubing will need to be replaces as it wears. The flow of a peristaltic pump is interrupted as the rollers engage and disengage from the tube. Guides are available for different peristaltic pump tubes against a long list of media however, it is almost always recommended to perform a dynamic test with the tube installed in the peristaltic pump under the regular conditions of the application. For this reason, special thermoplastic elastomers have been developed as peristaltic pump tubing which remain highly elastic over a long operation life.3 Chemical CompatibilityThe final critical element to the choice of tube to be used in a peristaltic pump is chemical compatibility. If not designed for operation in a peristaltic pump, a tube will suffer fatigue as elasticity is lost, the tube will flatten and flow performance reduces. 3.10).They can either be used to pump medium from source to waste or to recirculate medium in a chip. During this time, each part of the tube is compressed over 72 million times. Peristaltic pumps are widely used in cell culture as they are compact and easy to use and connect (Caplin et al., 2015 Maschmeyer et al., 2015a Kieninger et al., 2018 Alexander et al., 2018a Moya et al., 2018) (Fig. Consider a peristaltic pump running at 300 rpm with 4 rollers for 6 weeks continuously.
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