Page 12
Page 13
De-scale
To gain access to internal components, the body lid must be
removed. 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, thermistors and level sensors by
gently tapping or scraping. If the deposits are soft, use a nylon
pad and ush 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 manufacturers 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 could 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 could energise
the element causing failure. If in doubt, protect the element by
hand lling with water to the level of the draw-off tap before
switching on the electrical supply to the boiler.
When the green service indicator light on the front of the boiler is
showing solid colour, the header tank sensor has been starved of
water for in excess of 30 seconds and the bottom thermistor has been
disabled. To reinstate normal operation the water supply needs to be
re-applied.
If the service indicator light ashes, this indicates that the water
level has reached the high level sensor and the likelihood is that the
normal level sensor requires de-scaling, or the machine has over-
lled due to debris trapped in the solenoid valve.The debris can be
removed by drawing plenty of water from the dispense tap, causing
the solenoid valve to operate and ush out the obstruction. The
machine will reset itself once the problem has cleared. If this does not
rectify the problem, turn off the water supply and remove the exible
hose to check for debris in the valve’s lter. When the service light is
ashing, the element is dissabled and the boiler may cool. For further
assistance, contact our service department on 0113 249 6681, e-mail
[email protected]. or nd a local service engineer at
www.calomax.co.uk
Access to internal components can be gained by the removal
of the outer casing lid and left hand side panel. Once the outer
casing is removed, access to the Service Area has been gained.
This access must be restricted to persons having knowledge and
practical experience of the appliance, in particular as far as safety
and hygiene are concerned.
SERVICE INSTRUCTIONS
