A large producer of high-quality deep-frozen potato products and appetizers with plants in Zeeland, Brabant and Friesland has a lot of leaks on the Cornellpumps, which are set up in the production areas. Leakage is caused by the sealing of the pumps with a stuffing box which results in a lot of wear on the shaft. The pumps are overheated twice per year. Shaft bearings and packing rings are then replaced.
The Sellon solution
Sellon has conducted a survey of the 60 pumps and the costs are registered. A proposal has been submitted to convert the pumps to mechanical seals. Investment costs to convert the pumps to mechanical seals come to 1 time € 90,000, maintenance costs of the pumps with stuffing box packing amounts to € 120,000 per year.
In 2007, the conversion of the pumps to mechanical seals started, since then about 50 pumps have been converted. None of these pumps have fallen out since then. This directly results in a saving. Currently the lifetime is over 5 years. The goal was to convert all pumps to mechanical seals by the end of 2009. The bearing rings are also replaced by labyrinth seals to increase the bearing life.
Cost savings when all pumps have been converted € 120,000 per year.