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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-tight
seal.
Note: the element has a permanent ‘Live’ feed, and the
‘Neutral’ is switched.
Printed Circuit Board replacement (PCB)
In the unlikely 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.
