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DE-SCALING All models except WB5E
To de-scale your machine, first disconnect the machine from the power supply.
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 de-scaling solution. Remember to replace
the drain plug before using the de-scaler.
Clean the level sensing probes and their white holders completely using a clean
non-metallic scourer.
Ensure all traces of de-scaler are removed before using the boiler again.
Rather than frequently de-scaling the machine, it may be preferable to install an
effective scale reducer or WRAS approved food quality water softener. This will
reduce the frequency of de-scaling but will not remove scale completely in some
areas.
DE-SCALING WB5E
To de-scale your machine, first disconnect the machine from the power supply.
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 de-scaling solution. Remember to replace
the drain plug before using the de-scaler.