8Secondary rectifier Z002Measurement pointsDiode branch ADiode branch BCommon pointResistor AResistor BSecondary diodes:1. Measure diode branches one at the timefrom transformer (red test probe) tocommon point (black test probe)Values: 0,3 – 0,5 VDC2. Measure diode branches one at the timefrom common point (red test probe) totransformer (black test probe)Value: No valueDamping circuit resistors:Resistor value must be 5ΩMain components- Middle point connected full wave rectifier- Damping circuit reduces voltage stress of diodes- Overvoltage varistors protect diodes from ignition sparks

technical data

user interface

main components

Kemppi Fitweld 300 Service Manual

Introduction

Using the machine

Connecting to mains

Welding gun

Feeding in the welding wire

Setting the spool brake force

Changing the feed rolls

Controlling welding functions

Selecting the gun operating mode

Reversing polarity

Troubleshooting

Maintenance

Ordering codes

FitWeld 300