Nespresso Maestria EF 285 Service Manual page 4

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9 Function tests
................................................................................................. 116
9.1 Safety instructions.......................................................................................... 116
9.2 Required equipment....................................................................................... 116
9.2.1 Overview .............................................................................................. 116
9.2.2 Pressure gauge adaptor ...................................................................... 117
9.2.3 Mounting pressure gauge adapter ....................................................... 118
9.3 Measure flow rate........................................................................................... 119
9.4 Pressure and leakage checks ........................................................................ 120
9.4.1 Preparations.........................................................................................121
9.4.2 Test run ................................................................................................122
9.5 Measure coffee temperature .......................................................................... 123
9.6 Milk frother tests (Gran Maestria)................................................................... 125
9.6.1 Basic tests............................................................................................125
9.6.2 Measure hot milk temperature .............................................................125
9.7 Function test for cup heater (Gran Maestria) ................................................. 126
9.8 Function test for steam pipe (Maestria).......................................................... 128
9.9 Protective earth (PE) continuity test............................................................... 130
9.9.1 What coffee machine has to be tested and when? ..............................130
9.9.2 General ................................................................................................130
9.9.3 Test sequence......................................................................................131
9.9.4 What to do if the protective earth continuity test fails...........................133
9.10 Protective insulation test ................................................................................ 134
9.10.1 What coffee machines have to be tested and when? ..........................134
9.10.2 General ................................................................................................134
9.10.3 Test sequence......................................................................................135
9.10.4 What to do if the insulation test fails ....................................................136
10 Exploded Drawings
10.1 Exploded drawings for Maestria EF 285 ........................................................ 137
10.2 Exploded drawings for Gran Maestria EF 287 ............................................... 147
11 Spare parts Lists
11.1 Spare part selection criteria............................................................................ 155
11.2 Spare parts list - Maestria EF 285 .................................................................. 155
11.3 Spare parts list - Gran Maestria EF 287 ......................................................... 158
12 Notes
.................................................................................................................161
Maestria / Gran Maestria service manual
........................................................................................137
.............................................................................................155