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The paddling pool in the picturesque "Bäckeranlage" in the heart of Zurich presents itself as a lively meeting place with its lush vegetation and numerous trees. However, these conditions are a real challenge for the smooth operation of circulation pumps with an integrated pre-filter. Thanks to the innovative "SCC" pre-filter cleaning system from Herborner Pumpen, however, this problem was successfully tackled in a test run.
"Bäckeranlage" 47°37'79 "N 8°52'34 "E - Feldstrasse - 8004 Zurich, Switzerland
Outdoor swimming pools in particular are confronted with a persistent problem: The prefliter baskets of the pumps become heavily contaminated with leaves, grass and flowers. The dirt, which enters the baskets in varying degrees of intensity via the pool channel, leads to blockages and impairment of the pump system. As a result, there is a reduction in the circulation volume and even oscillation breaks caused by the strong suction power of the centrifugal pumps. Added to this is the challenge that soiling varies greatly due to weather influences, which makes manual cleaning at fixed intervals ineffective.
At INTERBAD 2022, Herborner Pumpen proudly presented its new pre-filter basket cleaning system - the SCC (Self Control Cleaning) - in response to these circumstances. After promising discussions at this trade fair, the city of Zurich was won over as a test site for this innovative system. The "Bäckeranlage" in Zurich, with its lush parkland, offered ideal extreme conditions for the test phase.
At the start of the 2023 season, the two existing pumps from the herborner.Xneo series built in 2019 were upgraded with the innovative SCC system and the system was adapted accordingly. In addition, the smart IoT controller HP-MIND was integrated to transfer real-time data from the pumps to the cloud. This enables Herborner Pumpen to gain insights into the operating behaviour of the pumps in order to enable efficient and automated cleaning of the pre-filter baskets according to the degree of contamination and current weather data.
Automated cleaning of the filter baskets based on the actual degree of soiling significantly reduces the time and labour required. The circulation volume is maintained in accordance with the standard specifications and any deviations in the pump characteristic curve can be recognised at an early stage using the cloud data. While maintaining constant flow control, this also leads to considerable savings in energy costs due to the reduced back pressure. In addition, the SCC system integrates the ETSPro, which independently deaerates the pumps, again minimising the time required and potential downtime costs due to dry runs.
Following the extensive test phase, the quality of the automatic cleaning processes received a consistently positive assessment and manual cleaning of the filter baskets is now only necessary in isolated extreme situations.
After analysing operating and weather data, we plan to further develop the cleaning intelligence and the algorithms used. So far, the SCC system has been recommended as the optimum solution for outdoor pools, especially in heavily greened facilities.
In indoor swimming pools, the evaluation of operating data by an HP.Mind controller contributes to failure-avoiding monitoring of the pumps and pre-filter baskets even without the SCC system.
