Milk Frother Tests (Gran Maestria); Basic Tests; Measure Hot Milk Temperature - Nespresso Maestria EF 285 Service Manual

9.6

Milk frother tests (Gran Maestria)

Prerequisite
Use newly opened UHT, full fat or semi-skimmed milk at fridge temperature
(+ 6 °C ± 2 °C (43 °F ± 3° F) for the following tests only.

9.6.1 Basic tests

Perform the following tests to ensure the proper functioning of the milk frother:
Milk frother dial
Pos. 1 Cold function: Check if liquid in milk frother stays cold
Pos. 2 / 3 / 4 Hot functions: Check if liquid in milk frother heats up
Foam functions: Check if foam of appropriate quality is created.
Pos. 1 / 2 / 3 Pos. 1 and 2: velvetly foam quality
Pos. 3: dense foam quality

9.6.2 Measure hot milk temperature

• Prepare 240 ml hot milk in milk frother (dial setting: pos. 4 - warm milk preparation
only).
• Measure temperature immediately after preparation in jug.
The milk temperature should be between + 64 °C ± 4 °C (147 °F ± 7 °F).
F U N C T I O N T E S T S
Functions to be checked
Maestria / Gran Maestria service manual
The disregard of this
specification can
affect the measuring
results.
Spattered milk may
cause burns. Only
use milk frother
with lid.
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