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.”
Montering Lowara Hydrovar-omformere giver mange fordele i flerpumpinstallationer, ikke mindst hvor det er muligt at genkende eventuelle pumpefejl og automatisk bringe en anden pumpe i gang for at overtage driften. Det er også muligt at programmere en samlet trykindstilling for hver pumpe, mens alle pumper kører, og hvis omformeren opdager utilstrækkeligt udladningstryk efter et vist driftsinterval, slukkes pumpen og forsøger at genstarte pumpen op til fem gange .
London-baserede nationale pumpe- og fluidhåndteringssystemleverandør AxFlow driver servicecentre i Windsor, Durham, Aberdeen og Huddersfield. Fra disse centre giver det et omfattende udvalg af pumpe- og bygningsfaciliteter vedligeholdelsesfunktioner. Dets teams af mobile ingeniører gør det muligt at udføre arbejde på stedet og i sine dedikerede tekniske workshops.
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