Power Flush Power Flush
Standards
It is important that when installing a new boiler the system should be cleaned prior to connecting the boiler. All new systems should comply with BS7593 and Benchmark requirement. System Flushing is also a requirement under Part L of the Building Regulations. Benchmark is the record of the installation and commissioning of your new boiler. Make sure your chosen installer knows that you are aware of Benchmark and that you expect to receive it.
Sludge
On a new installation a system may contain flux residues, jointing compounds, oils and other contaminants. Old systems may contain sludge.
Sludge is black iron oxide, produced by the decay of your heating system. This sludge sticks to all surfaces, causing premature failure of pumps and valves it can build up in radiators creating cold and inefficient radiators. This in turn reduces the efficiency of the system resulting in higher fuel costs.
Warranty
The heat exchangers in modern high efficiency boilers have much smaller waterways, than older traditional boilers, as much as 10 times smaller. Whilst this helps to improve the efficiency of modern boilers it also means they are very sensitive to sludge and debris.
If premature boiler failure occurs due to sludge or debris being present the manufacturer may invalidate the warranty.
Power Flush
A power flushing unit is connected into the heating system, normally at the pump isolation valves. The powerful flow and reverse flow of the unit will dislodge and mobilise sludge deposits and corrosion debris. To assist this process, specialist non acidic chemicals are introduced to loosen deposits and hold them in suspension. Care needs to be taken to use the correct chemical for the type of material used to manufacture the heat exchanger.
When the deposits are free flowing they are dumped to waste by the unit as this happens fresh clean water is being introduced thus flushing the system.
Radiators are left in position but isolated and flushed one at a time. A vibrating tool is used to loosen debris and sludge build up in the radiator.
Test are carried out to ensure the cleanliness of the system water, when clean a corrosion inhibitor is added to further prolong the life of the heating system.
Magnetic Power Flush Filter
The powerful rare earth magnet power flush filter, removes the suspended black iron oxide contamination from the flushing water. Even the smallest of particles are attracted to the high power magnet. The removal of suspended debris ensures a more effective power flush, this can reduce the quantity of chemicals required. A further benefit, is less disruption to the householder, due to shorter flushing time.