Nespresso Essenza C91 - Flow Rate and Pressure Measurement Part 2

24
FunctionTests
ServiceManualC91/D91 enVersion1.0
Measurin gflowrate(2)
Procedure(continued):
7. Connectpressurehosetopressuretester.
8. Positionmeasuringbeakerunderneath
exittubeofpressuretester.
9. Switchonmachine.
10. Presscoffeebuttonafterheatingup.
11. Openvalvefullytillwaterbeginstoflow.
12. Closevalveslowlyuntil12barareindi
cated.
Themanometermustbeobserved
continuouslyandthepressureregu
latedusingthevalveifnecessary.
Withincreasingtemperaturethe
pressurealsoincreases,ifneces
saryreadjustthepressureto12bar.
13. Performmeasurementforapprox.30sec.
14. Theremustbeatleast60  120 mlwater
inthemeasuringbeaker.
Notice:
 Withaflowof<60mlthepumpisdefective
orthere isaleakinthesystem.
 Largefluctuationsinthepressuregauge
readings(±4bar)duringmeasurementare
indicativeofadefectivepump.
8
7
1
0
9
13
12
1
4
11