Nespresso Gemini CS220 PRO - Pressure and Leakage Checks for Coffee Units

ServicemanualEF702/705
140
F U N C T I O N  T E S T S
Constantlymonitorthemanometerandifrequiredreadju stthevalve.Asthe
tempe ratureincreases,sodoesthepressure,readjustthepressureto 12bar
wh enrequired.
6. Carryoutmeasurementfor30sec.
Result:
Atleast60110mlofwatermustbeinthemeasuringbeaker.
Conclusions:
• Shouldlessthan60mlleakout,thenthepumpisdefectiveorthereisaleakinthe
watersystem.
• Largedeviationsintheindicatedpressurewhilemeasuring(±4bar)meansthatthe
pumpisdefective.
7.6 Pressureandleakagechecksforcoffeeun its
7.6.1 Preparation
1. Removebackwallandheatingplate(referto"Generaldisassembly"onpage77).
2. Installpressuretesteraccordingto"Preparation"onpage137.
Insteadofusin gabeaker,thedrainhosecanbeputinadriptray.
3. Connectcoffeemachinetomains.
7.6.2 Testr un
1. Openvalveatpressuretesterfully(turncounterclockwise).
2. Switchonthecoffeemachineandpressstandbybutton.
Bothcoffeoutletsarerinsedautomatically.
Ifpossible,perform
pressureandleakage
checksaftertheflow
ratemeasurement.
Dangerofinjuriesto
eyesandburn s!
Hotwaterunderpressure
canspurtoutofextrac
tionunit.
Alwaysattachsafetyclip
forprotection.