Function Tests; Safety Instructions; Required Equipment; Overview - Nespresso EF 451 C 111 Service Manual

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
4
1) Pressure gauge
(EFR no. 16195)
2) Citiz pressure gauge adapter
3) Digital multimeter
(for NTC temperature sensor test)
2
6
5
4) Electronic thermometer
(or digital multimeter suitable for temper-
ature measurement)
5) Timer
6) Measuring beaker
7) Test equipment for protective earth con-
tinuity test and protective insulation test
F U N C T I O N T E S T S
3
7
Citiz service manual
To simplify matters,
the model Citiz with
core unit "C-range" is
used to exemplify through-
out this chapter.
Symbolic illustration
of function test equip-
ment.
101