Kemppi Minarc Evo 180 Service Manual

Service manual Minarc Evo 150 and 180
Version 1.3
30.9.2015
23
Kemppi Oy
4.3.1.5. Overheat protection
Main transformer PTC is soldered to the Z001 main circuit card:
 Measure the resistance: It should be less than 100Ω
 In over temperature situation PTC goes to high-resistance mode (>10kΩ)
 Machine gives temperature alarm at 1,5kΩ
 A broken PTC has usually hundreds of kilo ohms resistance or no value at all.
+12VDC,
Test point on the right
side of R22
Reference ground, N3
right side, third leg
from top
+390VDC,
DC-link,
TP4
Primary GND,
TP5

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%