Function Tests; Safety Instructions; Required Equipment; Overview - Nespresso Maestria EF 285 Service Manual

All basic function
tests are shown with
the Gran Maestria
EF 287 coffee machine only.
Symbolic illustration
of function test equip-
ment.
116
F U N C T I O N T E S T S
9 F U N C T I O N T E S T S
9.1

Safety instructions

Some function tests are performed with an energized, partly opened coffee machine.
Danger of electrocution!
Mains voltage inside the coffee machine.
Do not touch any live part while performing tests.
Danger of burns!
Hot parts and water under pressure inside the coffee machine.
Do not touch any hot parts while checking for leakages!
Always wear protective goggles.
9.2

Required equipment

9.2.1 Overview

1
5
6
1) Pressure gauge
(EFR no. 16195)
2) Maestria pressure gauge adaptor
3) Digital multimeter
(for NTC temperature sensor test)
4) Flashlight
Maestria / Gran Maestria service manual
2
7 8
5) Electronic thermometer
(or digital multimeter suitable for temper-
ature measurement)
6) Timer
7) Measuring beaker
8) Test equipment for protective earth conti-
nuity test and protective insulation test
3
4