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Riley Product Handling, a manufacturer of bakery systems, has implemented a Flextraction system comprising five extended Hood Positioning Devices (HPDs) and two 2m standard HPDs.

RPH’s equipment links the exit of an oven with wrapping machines, sorting products into the right numbers of lanes and presenting the products at the correct angle and pressure.

When the company took the strategic decision to dispense with outsourcing its MIG, TIG and MMA welding fabrication, it needed the appropriate equipment to undertake such work.

Initially, the firm used a portable fume-extraction system with two extraction arms, before it decided to go for a fixed system with flexible extraction arms – extracting fumes externally via a filter unit to save on space with no clutter and a reduced noise level.

Foster Industrial, a distributor for Flextraction, was asked as one of three bidders to submit a quotation.

The Flextraction system was selected on the basis of design, price and communications.

Each of its extended HPDs consisted of a 3m standard extraction arm and a 3m extension.

All seven HPDs were equipped with epoxy painted black 150mm-diameter flared hoods and assembled complete with wall mounting and control damper, and with no internal components.

A TEKA 400V/50Hz Filtercube 4H-4000 centralised filter unit with a dust-extraction efficiency of more than 99 per cent to meet BGIA certification DIN EN ISO 15012-1 was used.

Dedusting of the filter cartridges is done using a fully automated microprocessor, Pulse Control.

The ducting used in the project was manufactured from spiral galvanised sheet steel and was installed with inspection doors, flexible hose connections and supporting brackets.

The extended HPDs are used for welding, while the standard HPDs, which are linked to a wet pre-separator system before joining the main ductwork, are used for grinding operations.

‘Our fume-extraction system is equipped with gate valves so it can be balanced,’ said Lee Darton, general manager, products, at Flextraction.

‘During commissioning, the system was tuned to achieve the legislative face velocities at each point of extraction, which was easily achieved as the system is capable of 8,000m3/h over six extraction points,’ he said.

‘In fact we were able to reduce the velocities to meet current legislative levels to reduce noise,’ Darton added.

Flextraction

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