Nespresso EF 451 C 111 - Milk Frother Tests

Citiz service manual
109
FUNCTION TESTS
9.6 Milk frother tests
Prerequisite
Use newly opened UHT, full fat or semi-skimmed 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
The disregard of this
specification can
affect the measuring
results.
Spattered milk may
cause burns. Only
use milk frother
with lid.
T2 T1
RANGE
-200°C - 1370°C
-328°F - 2498°F
1
REL
HOLD
T1 T2
T1
←
T2
°C/°F
MAX MIN
H2
H1
x
H2 H1–
H1
---------------------
100×=