The Powerflush machine.

Power Flushing

When fitting a new Condensing boiler it is madness not to power flush your existing system before you do so.

Central Heating Systems corrode internally, when air is in the system, producing black iron oxide sludge deposits in radiators and other iron components. These particles stick to all surfaces, causing premature failure of pumps and valves, cold unbalanceable radiators, block boiler heat exchangers and hot water heating coils. Overall system efficiency is greatly reduced and fuel wasted.

Connect the Powerflush machine to central heating system pipe work by either removing the central heating pump or a radiator. Flush the whole system without removing any additional radiators.

The Powerflush machine is set up so water flows from the radiators to machine, collecting all the iron oxide sludge, before reaching the boiler to minimise debris entering boiler heater exchanger. Rust remover chemicals (normally phosphoric acid based) added and boiler turned on.

By concentrating flow through individual radiators and vibrating the radiators the rust sports are removed. One by one, radiators, heating coils and all pipe work are flushed with clean water until water samples tested using pH Meters show clean and neutral readings. Small amount of Neutraliser is added to compensate for residual chemical cleaner, and then rust inhibitor is added and circulated throughout the system.

The Powerflush machine is removed and central heating system reinstated. Heating is turned on and the radiators are balanced to optimise system efficiency.

In some cases the radiators and pipes are badly corroded and the power flush will find these weak spots, which is just as well because if they were left they could burst at any time.