Melitta LOOK User Manual

5
5. MAINTENANCE 20
5.1 Visual inspection 20
5.2 Functional checks 20
6. PROBLEM ANALYSIS 20
6.1 Test equipment required for fault finding 20
6.2 General procedure and precautions 21
6.3 Inspection – removal of module from case 21
6.4 Connections for MVTU 11, MVTU 12 and MVTU 13 21
6.5 Checking voltage supplies to module 22
6.6 Printed circuit board tests 22
6.6.1 Monitoring of the voltage across relay coil 22
6.6.2 Measurement of the dc operating currents of the modules 22
6.6.3 Measurement of the ac operating currents of the modules 26
6.7 Calibration information 26
6.8 Repair and replacements 26
6.9 Repair of trip indicator on MVTU 11, MVTU 12 and MVTU 13 relays 26
6.10 Repair and replacement of miniature pcb mounted relay and flag mechanism
(where fitted) 26
6.10.1 Setting up procedure for the flag assembly. 27
6.10.2 Flag replacement parts 28
6.11 Replacements parts – ordering information 28
7 COMMISSIONING TEST RECORD 33
REPAIR FORM 35

Melitta LOOK Specifications

General

Type	Filter Coffee Machine
Capacity	10 cups
Keep Warm Function	Yes
Programmable	No
Coffee Type	Ground coffee
Water Level Indicator	Yes
Water Tank	Removable
Water Tank Capacity	1.25 L
Automatic Shut-Off	Yes