DOSING PUMPS & CONTROL SYSTEMS
Systematically Controlled Treatment Solutions
The DMX pump from Grundfos
Reliable, essential and increasingly high tech, dosing pumps and control systems quietly go about the business of delivering regular and accurate amounts of chemicals into swimming pools. Convenient and easy to use, they have made the life of pool owners that much simpler by automating the process of water treatment and we examine some of the products that are available By Karen Witney
ll pools, both commercial and domestic can hugely benefit from automatic water treatment, taking the guesswork out of ensuring the pool water is germ free and safe to swim in. Water quality is constantly monitored and exact dosing is applied so reducing the risk of overdosing and wasting chemicals thereby resulting in lower running costs. Bathing loads can quickly change and chemical distribution needs to be controlled. Technological advances have given us electronic controllers with probes that measure the water’s pH, redox and sanitiser levels and automatically adjust these accordingly. With so many choices on the market from small domestic systems to the many faceted heavy duty commercial controllers, any plant room can be enhanced by the implementation of intelligently controlled water treatment systems.
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GRUNDFOS PUMPS ARE IN THE SWIM
Swimming pools, whirlpools and aqua parks can all benefit significantly from a number of Grundfos’ water treatment solutions. For example, Selcoperm from Grundfos Pumps offers something that is a real alternative to more traditional based chlorine systems. A simple solution for water treatment, the system produces a hypochlorite solution from a combination of
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Available through Golden Coast, Etatron DLX microcontroller pump and dosing systems are suitable for pools up to 600 cubic metres
common salt, water and electricity – without creating any notable by-products. The components required to create these solutions are also minimal – a Selcoperm electrochlorinator, one brine and one product tank in combination with dosing pumps such as a Grundfos DDI or DMX pump – depending on the application.
Grundfos DDI pumps provide Digital Dosing from 75 ml/h up to 150 l/h with real setting of the flow rate. The integrated high-performance microelectronics and the
innovative speed-regulated drive technology produce a precise and continuous dosing. The rate is simply entered in litres per hour and the pump takes care of the rest. With their robust diaphragm-based design and their high-quality motors, Grundfos’ DMX pumps require minimum maintenance, cover a wide flow range and offer a variety of dosing head sizes, materials and accessories. The diaphragm design ensures that the dosing flow variation is below ± 1.5 % and the linearity deviation is kept below 4 % at all times. This allows very precise dosing of your chemicals – as much as necessary, as little as possible. The DMX series combines sophisticated drive technology and gear kinematics to ensure smooth and low- pulsation dosing without pressure peaks. This means less stress to all system components, such as tubes and valves, and leads to longer service intervals for the entire system.
TAKE CONTROL OF THE POOL WITH GOLDEN COAST
Independent studies show that as many as one in five UK pools are insufficiently chlorinated, allowing harmful parasites and bacteria such as e-coli to breed. However, this needn’t be the case.
Shaun Adams, a director of Golden Coast says: “Maintaining clean, safe water quality all year round requires ongoing, careful management. What’s more, if you’re doing this all manually, it’s all too easy to have things
SPN December 2014 53
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