When down-stream equipment is ready, the production can start.
Production starts by filling the unit with product via the balance tank. The product displaces the water/product mix to drain or reject tank.
The product is regeneratively pre-heated in a Tetra plate heat exchanger by the outgoing pasteurised product. To ensure even heat load on the product, final heating takes place in the PHE by means of an indirect hot water circuit. The product is held in a holding tube for the required period of time.
If the pasteurisation temperature gets too low, an automatic flow diversion valve, placed down-stream of the holding tube, diverts the product back to the balance tank.
After the holding tube, the product is cooled by the incoming product in the regeneratice section of the PHE.