If your heating pump needs to be replaced, the first thing to do is ensure that you identify the pump and also its direction of flow. So, if you are going to replace it, make sure you have used the details from the old pump when you are buying the new one. A Roehampton Plumber can fit a central heating pump.

Tip: Make diagrams of all connections.


Method:
a). Make sure that the central heating power supply is isolated at the consumer unit to make sure that the direct electrical feed to the pump is off. Turn off the spindle operated water valves either side of the pump C H pumps will only rotate in one direction and have a flow arrow marked on the casing to help when the pump is being installed or replaced.

b). Remove the electrical connections on the pump by unscrewing and removing the cover of the terminal box which is normally fitted on the side of the pump. Use a tester to confirm that there is no voltage present at the pumps electrical terminals. If you are not confident do not attempt this job you must call a professional service like Roehampton Plumbers.


c). There is a dial or screw fitted so that the speed of the pump can be adjusted. When, disconnected you can then undo the nuts on the pipe and remove the pump. Then either fit the new pump or carry out the work and replace as required, then bleed the pump and system.


Note:

These types of motors will run quietly. Although, You should, however feel a slight vibration. The big screw situated on top of the pump is the bleed screw and is fitted to allow any air in the pump to be removed by bleeding. These pumps cannot prime themselves, so if there is air in the pump you would not be able to get rid of it until it is bled out by using the screw. Do this by loosening the screw slightly until the hissing of the air stops and then re-tighten the screw again.