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

Citiz service manual
101
FUNCTION TESTS
9 FUNCTION TESTS
9.1 Safety instructions
Some function tests are performed with an energized, partly opened coffee machine.
9.2 Required equipment
9.2.1 Overview
To simplify matters,
the model Citiz with
core unit "C-range" is
used to exemplify through-
out this chapter.
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.
Symbolic illustration
of function test equip-
ment.
1) Pressure gauge
(EFR no. 16195)
2) Citiz pressure gauge adapter
3) Digital multimeter
(for NTC temperature sensor test)
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
T2 T1
RANGE
-200°C - 1370°C
-328°F - 2498°F
1
REL
HOLD
T1 T2
T1
←
T2
°C/°F
MAX MIN
1
2
5
4
6
3
7
MEASURE
LOCK/STOP
COMP
LIGHT
0Ω ADJ