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General function
The printed circuit board (PCB) controls the heating and lling
functions of the boiler by monitoring the thermistors 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-tight
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.
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