Power Flushing and Chemical Flushing

Most central heating systems contain some magnetite sludge, many old systems contain excessive amounts. If you install a new boiler in a system containing excessive amounts of sludge it can be disturbed around the system and into your brand new boiler, many manufacturers recommend power flushing in Llanelli with every new boiler installation.

We also offer an array of other services.

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The Power Flushing Procedure

Power flushing in Llanelli can often be necessary task, particularly when the system is producing rust or sludge, a tell-tale sign that your system is operating inefficiently. Flushing may also be needed if a new system or radiator has been installed.

  • Turn off all the power that controls the heating system. Any gas or electricity connected to the boiler, as well as control switches on the boiler, should also be turned off. Locate the feed/expansion tank, also known as the header tank, in the loft. It will be the smaller of the two tanks. The tank’s water supply must either be turned off, or the ball valve must be blocked. Make sure that there is no water in the ball. A leaky ball can make the heating system less efficient, and would need to be replaced. Stop water from entering the tank during draining by laying a piece of wood across the tank, lifting the valve onto it and tying it to the wood so it will remain shut off.
  • Connect the drain cock, usually located at the lowest part of the pipework, to a hose secured by a jubilee clip. The hose should be run outside the house, but avoid roads, sidewalks or other pavement that have the potential for accidents. Use a pair of pliers to open the drain valve.
  • Open up all the bleed valves on all radiators in order to speed up the flushing process. Open up the highest level valves first and work down to the lowest. Opening the lower valves too soon can cause water to push out from the valves instead of sucking in air.
  • Check the system to see if it is fully flushed once water has stopped running from the hose. Air in the system may have prevented some water from draining. If this is the case, loosen the ball cock in the header tank so about 6 inches of water can come in. This water should drain from the hose in a few seconds. If an air lock is stopping the water from draining, connect the hose’s other end to a cold tap and shoot water into the blocked radiator.
  • Close all the bleed valves and the drain cock that have been opened. Release the ballcock in the feed/expansion tank to let it refill. Start bleeding the lower level radiators and work upward once the tank is full. Check all valves to make sure they are shut tightly.
  • Turn on or relight the boiler. You may hear a knocking noise as the result of air expanding in the system. Stabilize the system by bleeding the radiators again and checking the system for leaks.

Quality Power flushing in Llanelli

Power flushing in Llanelli is the safe, clean and easy way to remove sludge (magnetite sludge) from your central heating system. For power flushing advantages click here.

If your system shows any of the following symptoms, then both you and your central heating will benefit from this type of water treatment:

  • Cold spots in radiators
  • Loud banging noises from the boiler
  • Noisy pipes due to restrictions
  • Radiator cold at top
  • Radiator cold at bottom
  • Blocked pipes & valves due to sludge or lime scale
  • Boiler cutting out due to damaged or blocked pump
  • Dirty brown or black water present when bleeding radiators
  • Little or no hot water due to blocked pipes and heat exchangers

By using the ‘Powerflush Machine’ our qualified engineers will be able to clean out the contamination within your system, and in one operation with no mess and no fuss, restore your installation to give your new boiler and system the best start.

Once the system has been cleaned, we will refill the heating circuit and an inhibitor (chemical) will be added to protect your system in the future.