Citizservicemanual
138
F U N C T I O N  T E S T S
9.6 Mil kf ro th ertes t s
Prereq uis ite
UsenewlyopenedUHT,full fatorsemiskimmedmilkatfridgetemper ature(+ 8 °Ctill
+ 10 °C)forthefollowingtestsonl y.

9.6.1 Measur ehotmi lkt emperatu re

• Prepare240mlhotmilkinmil kfrother(usemixerwithout spring).
• Measuretemperatureimmediat elyafterpreparationinjug.
Themilk temperatu reshould bebetween+60°Cand+70°C(140°Ftill158 °F).

9.6.2 Measur emilkf rot hr atio

• Preparecoldmilkfrothoutof 120mlmilkinmilkfrother(us ewhiskwithspring).
• Emptycontentofmilkfrother intomeasuringbeaker.
• Determinetheratiox[%]ofm ilkfrothtoliquidmilkwithfollo wingformula:
Appr oxi matev alues :
dir ectaft erp repar atio n ............................................ ......................................... x=250
60secaf ter pr eparat io n .......................... .................................... ...................... x=190
Thedisregardofthis
specificationcan
affectthemeasuring
results.
Spattered milk may
causeb urns.On ly
usemil kfro ther
withl id.

x H

2

 H

1

H

1
 100 ´ =