Kemppi Minarc Evo 180 Service Manual

Kemppi Oy
CONTENTS
1. READ THIS FIRST ........................................................................................................................................... 1
2. GENERAL......................................................................................................................................................... 2
3. TECHNICAL INFORMATION ........................................................................................................................... 3
3.1. Technical data ........................................................................................................................................... 3
3.2. Wiring diagram .......................................................................................................................................... 5
3.3. Construction .............................................................................................................................................. 6
3.3.1. Inner structure .................................................................................................................................... 7
3.3.2. Z001 main circuit card structure ........................................................................................................ 8
3.3.3. A001 control card structure ................................................................................................................ 9
3.4. Description of operation .......................................................................................................................... 10
3.4.1. Z001 Main circuit card ..................................................................................................................... 10
3.4.2. A001 Control card ............................................................................................................................ 11
4. SERVICE INSTRUCTIONS ............................................................................................................................ 12
4.1. Programming ........................................................................................................................................... 12
4.2. Calibration ............................................................................................................................................... 12
4.2.1. Functions and buttons ..................................................................................................................... 12
4.2.2. Calibration parameters .................................................................................................................... 15
4.2.3. Calibration procedure ...................................................................................................................... 15
4.3. Measurements and tests ......................................................................................................................... 16
4.3.1. Z001 Main circuit card ..................................................................................................................... 16
4.3.1.1. Input rectifier and PFC circuit ................................................................................................... 17
4.3.1.2. IGBT ......................................................................................................................................... 19
4.3.1.3. Secondary rectifier.................................................................................................................... 21
4.3.1.4. Voltages .................................................................................................................................... 22
4.3.1.5. Overheat protection .................................................................................................................. 23
4.3.2. A001 control card ............................................................................................................................. 24
4.3.3. Cooling fan ....................................................................................................................................... 26
4.3.4. Low voltage tests ............................................................................................................................. 26
4.3.5. Safety tests ...................................................................................................................................... 26
4.4. Semiconductor installation ...................................................................................................................... 26
4.4.1. Rectifier/PFC module and IGBT ...................................................................................................... 26
4.4.2. Secondary rectifier ........................................................................................................................... 27
4.5. Final testing ............................................................................................................................................. 27
4.5.1. Load bank test ................................................................................................................................. 28
4.5.2. Test welding ..................................................................................................................................... 28
5. NOTES ........................................................................................................................................................... 29
APPENDIX .......................................................................................................................................................... 29

Kemppi Minarc Evo 180 Specifications

General

Input Voltage	230 V
Protection Class	IP23S
Welding Processes	MMA, TIG
Open Circuit Voltage	85 V
Electrode Sizes	1.5 - 4.0 mm
Input Frequency	50/60 Hz
Power Factor	0.99
Efficiency	82%