Melitta LOOK User Manual

4
TYPES: MVTU 11
Definite Time Delayed Undervoltage Relay
MVTU 12
Definite Time Delayed Overvoltage Relay
MVTU 13
Definite Time Delayed Neutral Displacement Relay
MVTU 18
Definite Time Delayed Neutral Displacement Relay with
Additional Timer
CONTENTS
SAFETY SECTION 6
1. DESCRIPTION OF SETTINGS 10
1.1 Voltage settings 10
1.2 Time settings 10
1.3 Trip indication 10
2. AUXILIARY EQUIPMENT 10
2.1 External series resistors 10
2.2 MVTU 11 Undervoltage and MVTU 12 overvoltage 11
2.3 MVTU 13 Neutral displacement 11
2.4 MVTU 18 Neutral displacement 11
3. INSTALLATION 12
3.1 Precautions 12
3.2 Packing 12
3.3 Inspection 12
3.4 Unpacking 12
3.5 Storage 12
3.6 Siting 12
4. COMMISSIONING TESTS 13
4.1 Inspection and wiring check 13
4.1.1 Electrostatic discharges (ESD) 13
4.2 Connection of the MMLG test block 13
4.3 Earthing 13
4.4 Insulation check 13
4.5 Functional testing 14
4.5.1 DC auxiliary supply check 14
4.5.2 Test block type MMLG 14
4.5.3 Isolation of VT circuit 14
4.5.4 Voltage setting check 15
4.5.5 Timer setting check 18
4.5.6 Final setting checks 19
4.5.7 Trip indicator and contact check 19
4.5.8 Final checks 19

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