WDS and Maestrani report on the gradual conversion of a shell moulding line from 1987
When a confectionery machine no longer meets current requirements, plant operators face important decisions. A complete plant replacement provides a modern system that fulfils all customer requirements. However, such a replacement is associated with high costs, longer delivery times and production downtime. For this reason, confectionery manufacturers often opt to retain and modernise existing equipment – as did the Swiss confectionery manufacturer Maestrani, which operates a WDS shell moulding line, type 471, from the year 1987.
WDS confectionery machines are characterised by their highly durable, robust mechanics. Even after many years in operation, the chocolate production plant at Maestrani continues to run reliably. To ensure future availability of the plant, a decision was made to carry out comprehensive modernisations. By gradually replacing all key system components, the existing plant mechanics are being brought up to date at all critical points.
To begin with, the general scope of the modernisation steps was agreed in close coordination between WDS and Maestrani. The individual measures are then commissioned one at a time. This allows the customer considerable flexibility in allocating their budget. As early as 2020, the filling depositor machine was replaced with a depositor machine from the latest generation. In the following years, modernisation measures were commissioned for the final cooler, scales, scrapers, mould empty control and top depositor machine.
Implementation took place in close coordination with WDS and was flexibly adapted to production circumstances. This allows non-production periods, such as Christmas or Easter breaks, to be used highly effectively in order to minimise downtime for installation work.
For the necessary disassembly, installation and start-up, fitters, electricians and operating personnel from both companies work hand in hand. Thomas Kleppel, WDS Regional Sales Manager and overseer of the project, praises the reliable partnership with the customer: “A modernisation project of this scale and duration confirms the strong business relationship between Maestrani and WDS, characterised by excellent coordination and constructive cooperation. The initial measures have been successfully implemented, and we are continuously working on the remaining steps.”
Thanks to the modernisation measures, the operational reliability of the existing plant is secured for a long service life. The conversion measures have also introduced user-friendly and process-optimising plant components. The conversion to EasyClean components – for example, at the depositor sections or the scraper – enables rapid changeover of components that come into contact with the product mass, which previously required significantly more production downtime with the older components. In this way, the existing shell moulding line is being modernised over the coming years into a competitive, state-of-the-art plant.
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Joseph Clarke
Editor, International Confectionery
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