Milk Frother Tests; Measure Hot Milk Temperature; Measure Milk Froth Ratio - Nespresso Citiz Service Manual

The disregard of this
specification can
affect the measuring
results.
Spattered milk may
cause burns. Only
use milk frother
with lid.
138
F U N C T I O N T E S T S
9.6 Milk frother tests
Prerequisite
Use newly opened UHT, full fat or semi­skimmed milk at fridge temperature (+ 8 °C till
+ 10 °C) for the following tests only.
9.6.1 Measure hot milk temperature
• Prepare 240 ml hot milk in milk frother (use mixer without spring).
• Measure temperature immediately after preparation in jug.
The milk temperature should be between + 60 °C and + 70 °C (140 °F till 158 °F).
9.6.2 Measure milk froth ratio
• Prepare cold milk froth out of 120 ml milk in milk frother (use whisk with spring).
• Empty content of milk frother into measuring beaker.
• Determine the ratio x [%] of milk froth to liquid milk with following formula:
Approximate values:
direct after preparation .....................................................................................x = 250
60 sec after preparation ....................................................................................x = 190
Citiz service manual
H H
2 1
=
x
­­­­­­­­­­­­­­­­­­­­ ­ ´ 100
H
1