Philips HD 8753 Service Manual

INTELIA 04 OPERATING LOGICSaeco International Group Rev. 01 / September 2011 Page / 084.8. Water level detection (water tank)“Water low” message (water reserve)Function:The water level is monitored by a capacitative sensor, located onethird of the way up the water tank wall.If the electronics assembly detects, by means of the sensor,that the amount of water in the tank has dropped below theabove mentioned level, a water reserve remains available forthe dispensing process underway (this will cover 200 flow meterpulses).The product dispensing process will then come to an end.If a dispensing cycle ends after the sensor has been triggered (inthe reserve) then the display “Water low” continues to be displayedduring the following dispensing cycle.200 puls.SensorWater tank07“Descaling” – message with water filterinserted(appliances with display only)The water hardness is set on the basis of theregional water hardness analysis(1, 2, 3, 4).Filter off:If the function is turned off the electronicsassembly monitors the flow meter pulses,recording one pulse each turn.Filter on:If the function is turned on the electronicsassembly monitors the flow meter pulses,recording one pulse every two turns.“Change water filter” messageThe electronics assembly uses the flow meterimpulses to keep track of the amount of waterwhich has flowed through; after the specifiedamount (set in accordance with the waterhardness level), the “Replace filter” messageappears.4.9. Descaling request360°1 revNumber of pulsesFilteronFilteroffFlow meter pulses