Tank Filling & Overflow Protection
21. The control system will only open the inlet valve for a maximum of 40 seconds. If the tank
is not full at the end of this time the machine will enter a fault condition. The internal display
will read “TANK FILL FAULT CALL OPERATOR”. This fault can be cleared by switching the
machine off and on.
Note: An empty tank may take several cycles to fill completely.
22. The second protective mechanism is designed to act as a fail-safe in the event that a slow
leak occurs which does not result in the liquid entering the drip tray. The machine will
cease all attempts to fill the tank after 20 tank top ups have been made, if no selections
have been taken in the meantime.
FIG 1.2 WATER SYSTEM – FUNCTIONAL DIAGRAM
Model shown is S3 BTC
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