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De-scale
To gain access to internal components, the body lid must be
removed. The lid incorporates a condenser mechanism
which
must
be fitted the correct way round. The lid is labelled accordingly. To
remove the lid, break the lid gasket seal and pull the lid forward and up,
to the front of the machine before lifting 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 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 from the appliance
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 sensor
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 filling
with water to the level of the draw-off tap before switching on the
electrical supply to the boiler.
General function
The printed circuit board (PCB) controls the heating and filling functions
of the boiler by monitoring the thermistor and level sensors. The PCB
also controls the external light unit to indicate the current state of the
boiler. Red and yellow LED’S on the circuit board indicate whether the
PCB has energised the element or solenoid respectively.
Should an element fail and need to be replaced, it may be necessary
to replace the lid gasket to ensure a reliable steam-seal.
Note: the
element has a permanent ‘Live’ feed, and the ‘Neutral’ is switched.
Printed Circuit Board replacement (PCB)
In the event of a PCB failing and a replacement being required, full
instructions will be supplied. It is important to note however, that the
Triac PCB must be securely mounted against the copper heat-sink
to ensure reliable heat dissipation. Heat transfer compound is also
supplied with all replacement circuit boards.
Adjusting the Water Temperature Set Point
The temperature potentiometer (Pot) is pre-set at Calomax and
will only require adjustment in exceptional circumstances. Contact
Calomax for advice.
Water boils at different temperatures depending on barometric
pressure. The temperature should not be tuned higher than 98°C, or
over boiling may occur during low barometric pressure conditions,
causing the unit to trip the overheat cut-out device.
On / Off Switch
The On / Off switch is positioned at the rearof the machine. When in
the off position the unit will cease to function & the light on the fascia
will go out.
NOTE: This switch must not be used to isolate the electrical supply
for servicing / maintenance. When maintaining / servicing the unit the
power cord must be removed from the mains supply.
