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Dairy processing: Aseptic processing and packaging systems
Stuffing pump

Stuffing pumps may be used to improve the efficiency of other devices, such as homogenizers.

General conditions

  • Are usually centrifugal pumps
  • Are constructed of stainless steel or a suitable corrosion resistant material
  • Are clean and in good mechanical condition
  • The painted exterior surfaces are free of flaking paint and rust
  • All pumps installed in the sterile zone are of an aseptic design
  • Disassemble before cleaning any pumps not specifically designed for CIP use
    • remove impellers and back plates for cleaning as well.

Installation/operation

  • Inter-wire product stuffing pumps with the flow control device electrical operating signal so that the pump shuts off when the flow control device is not allowed to run
    • stuffing pumps may be configured to start prior to starting the homogenizer provided the flow control device is in an "allowed to run" condition
  • Install and operate the stuffing pump in a way that it will not:
    • influence the proper pressure relationship within the regeneration section
    • reduce the holding time below the required minimum

If the homogenizer is used as a flow control device, a centrifugal type stuffing pump may be installed between the raw product outlet of the regenerator and the inlet manifold of the homogenizer to supply the desired pressure to the homogenizer.

  • Perform tests upon installation, at least once every 6 months thereafter and when the micro-switch is re-set or replaced
    • keep records to show testing has occurred
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