Month: February 2016

Grundfos Pumps Win United Nations Momentum Award

The United Nations has recognised Grundfos Pumps for its technological advances in sustainable water solutions in underdeveloped nations.


Their initiative, Lifelink, was one of 15 to win the United Nation’s Momentum for Change: Lighthouse Activity Award in the Information and Communication Technologies section.

The company has received global recognition for its work in developing new technologies to address issues relating to water supply in Kenya and Uganda.

The Paris Climate Conference

The United Nations applauded Grundfos for the efforts they have made in providing “some of the most practical, scalable and replicable examples of what people, businesses, governments and industries are doing to tackle climate change and wider economic, social and environmental challenges”.

They beat more than 425 other initiatives to win this prestigious award, which they hope will highlight their efforts in countries where access to clean, safe and drinkable water is still proving to be a challenge.

Grundfos also works in Taiwan in the fight against climate change, ensuring that their initiatives are energy-efficient with low carbon emissions.

Sustainable Options

Most of Grundfos’ sustainable water supply solutions rely on renewable energy via solar power, which is abundant in these areas of the world.

To date they have focused their attention on Africa, but recently announced they have developed two new products: AQtap and AQPure.

AQtap helps the utility providers to maintain the water system and to control the price of water supplied. AQpure converts water that would otherwise be unfit to drink into safe drinking water.

Wider General Product Range

Of course, Grundfos does not just manufacture products for use in underdeveloped countries. They also make products for the domestic and commercial markets in the developed world.

They are currently part of a Water Technologies alliance that shares knowledge and technology with American utilities providers.

And they provide the CRN pumps at hydrogen refuelling stations in Denmark that help the hydrogen flow into hydrogen-fuelled cars.

They have been involved in installing their high-quality pumps in the new state-of-the-art children’s hospital at Alderhey, Liverpool.

In the residential market Grundfos is also well known for its high-quality central heating and sewage pumps. And in recent months, they have been selling submersible pumps to help in areas affected by flooding.

View the full range of both commercial and domestic Grundfos pumps here.

How to test a central heating pump

Central heating failures are often due not to the boiler itself but to peripheral components such as pumps and motorised diverter valves. These are among the few moving parts in the system and so are more likely to be subject to wear and failure over time.


Central heating pumps do fail, and it isn’t hard to diagnose this yourself. First of all, find it – the pump will usually be located near to the boiler or the hot water cylinder in non-combi systems. It will generally be made by Grundfos or Lowara and will have the maker’s name on it.

Pumps are usually cylindrical in design and will often have a switch allowing the flow rate to be adjusted. If you think you have a problem with your pump, try lightly touching it. If it’s working properly there will be a slight vibration and it will be warm to the touch.

If your pump isn’t working, turn off the power supply to it and get a cloth and a screwdriver. In the centre of the pump you’ll see a silver plate with a slot in it. Loosen this by half a turn – be careful here, as the pump could be full of hot water. You should get a slight hiss as air escapes and some water will drip out – that’s why you need the cloth.

If the water is cool enough, remove the silver plate. Be careful not to lose it. You should then be able to see the end of the pump shaft, which has a small slot in it. This should turn easily with a small screwdriver. If it doesn’t then it’s seized, and you’ll need to replace the pump.

If the shaft turns easily, turn the power back on. If you can see the shaft spinning but you’re still not getting heat, then it’s likely the problem is air in the system or the impeller has broken. In the former case, the pump will usually have a bleed valve, but make sure you bleed the rest of the system too, including radiators. A broken impeller will usually lead to a rattling or clicking noise as the fragments float around inside the pump. If this is the case, the pump will need replacement. You can find products from Anchor Pumps to help with any central heating pump issues.

Read our complete guide to buying a central heating pump here. 

Tips for cleaning your shower head

A shower pump is a popular upgrade to many homes, allowing you to have a satisfactory shower even if the water pressure in the property wouldn’t otherwise allow it.

Tips for cleaning your shower head

Shower pumps are generally very reliable and require little in the way of maintenance. However, some regular attention and cleaning can make sure that your pump has a long working life.

Pumps usually have a reservoir which can be removed for cleaning. This is easy to do just by removing a screw and detaching the reservoir – though take care, as there may be some water in it. Every year or so the pump should be flushed using an anti-bacterial solution to avoid a build-up of sludge.

The filters in shower pumps can become clogged with limescale if you live in a hard-water area. To clean these, you’ll need to isolate the electrical supply to the pump and turn off the water valves either side of it. Filters are usually located behind the flexible connection pipes to the impellers. Check the manufacturer’s instructions if you’re unsure.

Your pump will last longer if you pay attention to the rest of the shower too. The shower head should be cleaned and descaled regularly – especially in hard-water areas – as this is a common cause of poor water flow. While you’re there, it’s also worth cleaning the drain from the shower tray to keep it free of hair and soap scum.

Poor flow may also be due to an airlock. You can cure this by turning off the electricity to the pump, then opening the shower mixer taps to allow any water out of the system before closing them again. To vent the pump directly, you’ll need to remove the connection pipes after first closing off all of the valves.

Read our complete guide to shower pumps here.