DE-SCALING All models except WB5E
To
Remove the case by removing the top and bottom screws holding the case to the wall bracket.
Drain the remaining water through the drain plug in the bottom of the tank.
Remove the boiler lid by unscrewing the fixing screws. The tank is now accessible.
The whole boiler can be disconnected and lifted away from the wall fixing by removing the push on water and vent fittings and disconnecting the electrical components. However, it is recommended that only a qualified person undertakes this work and that unless a qualified person is available, the de- scaling is carried out with the boiler on the wall.
Lift out the baffle plates on the inside of the tank (taking note of the position of the plates). Remove as much scale as possible by hand. Dissolve any scale that is difficult to remove by using a
Clean the level sensing probes and their white holders completely using a clean
Ensure all traces of
Rather than frequently
DE-SCALING WB5E
To
Drain all the water using the tap. Disconnect the tap. Remove the case by removing the top and bottom screws holding the case to the wall bracket.
Drain the remaining water through the drain plug in the bottom of the tank.
Remove the boiler lid by unscrewing the fixing screws. The tank is now accessible.
The whole boiler can be disconnected and lifted away from the wall fixing by removing the push on water and vent fittings and disconnecting the electrical components. However, it is recommended that only a qualified person undertakes this work and that unless a qualified person is available, the de- scaling is carried out with the boiler on the wall.
Lift out the baffle plates on the inside of the tank (taking note of the position of the plates). Remove as much scale as possible by hand. Dissolve any scale that is difficult to remove by using a
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