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De-scale
To gain access to internals of the water tank, the body lid must be
removed. Remove the 4 screws, break the lid gasket seal and lift it
clear of the body.
Note
: Whenever the body lid has been removed from the boiler a new
lid gasket may be required to ensure a steam-tight joint. Damage to the
unit caused by a poor lid seal is not covered by warranty.
Scale deposits should be removed from all internal surfaces,
particularly the heating element, thermistor and level sensors by
gently tapping or scraping. If the deposits are soft, use a nylon
pad and flush out. Abrasive cleaning materials containing scouring
powders and detergents must not be used, such materials can
cause taste problems.
Suitable chemical de-scalants must only be used in accordance
with the manufacturer’s recommendations. This will prevent health
and safety issues, taste problems and potential damage to the
appliance. All trace of these chemicals must be removed before re-
commissioning the unit. Misuse of such chemicals is not covered by
the product warranty.
IMPORTANT Before re-commissioning the boiler it is
important that all scale and moisture is removed from the
level sensors and insulating gaskets, to avoid a false signal
being transmitted through the scale to the boiler body. Failure
to remove this scale and/or moisture will cause the sensor to
indicate to the PCB that water is covering the element, whether
or not water is present. In this situation the PCB will energise
the element causing failure. If in doubt, protect the element by
hand filling with water to the level of the draw-off tap before
switching on the electrical supply to the boiler.
