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AxFlow spin Royal Ballet pumps

Water booster pumps

When it comes to servicing or replacing water pumps in commercial premises, engineers are inevitably going to be up against tight time deadlines. For AxFlow’s service engineers, the time available for replacing ageing cold water booster pumps in the Royal Ballet School’s Floral Street campus in central London was just 9 hours. And that was overnight.

The Upper School, adjacent to the Royal Opera House in Floral Street, is in almost constant use, even at weekends, making it impossible to shut off the water supply during working hours. Working with facilities management company CMS Limited, AxFlow drew up a schedule that would allow them to enter the premises at 21.00 hours, shut off the water supply and then start removing the three existing pumps and replace them with new energy efficient pumps. Most importantly, they had to ensure that the premises were completely vacated before work could commence.

“Because it was necessary to replace the existing pumps, we took this opportunity to provide the Royal Ballet School with a cold water booster system that would make use of the existing manifold infrastructure and give them an energy saving solution that offered the greatest degree of flexibility for the building,” reports Denis Yeoman of AxFlow. “Our solution was to install three Grundfos CR1- 10-6 multi-stage pumps fitted with Lowara Hydrovar inverters. Each pump has a middle of curve capable of 11m3/h at 45meters head. In addition, we also replaced the existing control panel with a three pump isolator panel. Much to the satisfaction of the customer, we were able to reduce equipment and costs by re-using the existing manifold due to the existing pipework being of a good standard.”

Fitting Lowara Hydrovar inverters provides many advantages in multi-pump installations, not least of which is the capability to recognise any pump failure and automatically bring on stream another pump to take over the duty. It is also possible to programme an overall pressure setting increase for every pump while all the pumps are running and should the inverter detect insufficient discharge pressure after a certain interval of operation it turns the pump off, then attempts to restart the pump up to five times.

London-based national pump and fluid handling systems supplier AxFlow operates service centres in Windsor, Durham, Aberdeen and Huddersfield. From these centres, it provides a comprehensive range of pump engineering and building facilities maintenance capabilities. Its teams of mobile engineers enable work to be carried out on site and in its dedicated engineering workshops.

AxFlow Ltd

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