LORCH M-Pro Performance M 300 User Manual

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909.1239.9-10

M-Pro Performance

DE

Bedienungshandbuch Seite 2

EN

Operation Manual Page 34

ES

Manual de instrucciones Página 66

NL

Bedieningshandboek Pagina 98

RU

Руководство пользователя стр. 130

FR

Manuel d‘utilisation Page 164

CS

Návod k použití strana 198

IT

Manuale di istruzioni Pagina 230

PL

Podręcznik użytkownika Strona 262

PT

Manual de utilização Página 294

Table of Contents

Questions and Answers:

A
andrewjonesAug 21, 2025
Why is the welding power reduced on my LORCH M-Pro Performance M 300?
- S
  sandovalamandaAug 21, 2025
  If you notice reduced welding power in your LORCH Welding System, consider the following: * A missing phase. Try a different power socket and check the supply cable and mains fuses. * Insufficient ground contact at the workpiece. Ensure a good, clear ground connection. * The ground cable is not correctly inserted. Lock the ground connector by turning it clockwise. * A faulty torch. Repair or replace the torch.
M
Marcus OrtegaAug 23, 2025
What to do if the inert gas feed is insufficient on my LORCH Welding System?
- M
  michael35Aug 25, 2025
  If the inert gas feed is insufficient in your LORCH Welding System, consider these possible causes: * The inert gas quantity is set incorrectly at the pressure reducer. Adjust the setting as described in the operating instructions. * A dirty pressure reducer. Check the pressure reducing nozzle. * A blocked or leaking torch or gas hose. Check these components and replace if necessary. * Draughts blowing the inert gas away. Eliminate the draughts.
K
Karen BlackburnAug 26, 2025
Why does my LORCH M-Pro Performance M 300 Welding System keep switching off?
- A
  Alex PonceAug 26, 2025
  If your LORCH Welding System switches off unexpectedly, it could be due to: * Exceeding the duty cycle. Allow the equipment to cool down at no-load. * Insufficient cooling of components. Check the air inlet and outlet on the equipment.
D
Deanna GeorgeAug 27, 2025
What to do if inert gas is missing from my LORCH M-Pro Performance M 300 Welding System?
- C
  Cynthia ByrdAug 27, 2025
  If inert gas is missing from your LORCH Welding System, consider the following: * The gas cylinder is empty. Replace it. * The torch is faulty. Check and replace if necessary. * The pressure reducer is dirty or faulty. Check and replace if necessary. * The gas cylinder valve is faulty. Replace the gas cylinder.
S
Steve GriffinAug 29, 2025
How to fix an unstable arc on my LORCH Welding System?
- T
  tuckercurtisAug 30, 2025
  If you're experiencing an unstable arc with your LORCH Welding System, it could be because the contact tip doesn't match the wire diameter, or the contact tip is worn. Check the contact tip and replace it if necessary.
G
gfrostAug 31, 2025
Why does the wire feed unit of my LORCH M-Pro Performance M 300 have increased wire abrasion?
- B
  blopezSep 1, 2025
  If the wire feed unit has increased wire abrasion on your LORCH Welding System, consider: * The wire feed rollers do not match the wire diameter. Fit the correct feed rollers. * Incorrect contact pressure on the wire feed unit. Set the pressure as described in the operating instructions.
A
ashley97Sep 3, 2025
What to do if the torch switch has no function on my LORCH Welding System?
- R
  Robert ValdezSep 3, 2025
  If the torch switch on your LORCH Welding System has no function when activated: * Ensure the union nut from the torch hose pack to the central socket is correctly tightened. Tighten the union nut. * Check for an open circuit in the control cable within the torch hose pack and replace if necessary. * The thermal protection may have triggered. Allow the equipment to cool down at no-load.
A
Adam HenrySep 5, 2025
How to fix inert gas that won't switch off on my LORCH M-Pro Performance M 300?
- D
  Denise BrownSep 5, 2025
  If the inert gas does not switch off in your LORCH Welding System, the gas valve may be dirty or sticking. Remove the torch and pressure reducer, then blow out the gas valve in the opposite flow direction with compressed air.
R
Russell IngramSep 7, 2025
What causes wire to stick or burn onto the contact tip of my LORCH Welding System?
- R
  Rachel WalshSep 7, 2025
  If the wire is sticking or burnt onto the contact tip of your LORCH Welding System, it could be: * The wire electrode is jammed on the reel. Check and replace if necessary. * There is a burr at the start of the wire. Trim the end of the wire.
K
kcarrSep 9, 2025
How to remove an arc or short circuit between the contact tip and gas nozzle on my LORCH M-Pro Performance M 300 Welding System?
- T
  Tara LewisSep 10, 2025
  If there's an arc or short circuit between the contact tip and gas nozzle on your LORCH Welding System, a spatter bridge may have formed between them. Remove it using suitable special pliers.

LORCH M-Pro Performance M 300 Specifications

General

Brand	LORCH
Model	M-Pro Performance M 300
Category	Welding System
Language	English

Summary

Machine Elements Overview

Explanation of Symbols

Symbols in Operation Manual

Symbols on the Machine

Safety Precautions

General Usage Regulations

Unit Protection

Setup and Transport Procedures

Brief Operating Instructions

Before Start-Up Guide

Connecting the Torch

Guide for connecting the welding torch to the central socket.

Connecting the Ground Cable

Instructions for connecting the welding return cable and ground clamp.

Fastening the Ground Clamp

Inserting the Welding Wire Spool

Threading the Wire Electrode

Connecting the Inert Gas Cylinder

Changing the Wire Electrode

Machine Start-Up Procedure

Control Console Overview

Overview of the welding machine's control panel and its components.

Initial Start-Up Process

Current and Voltage Display

Torch with Remote Control Features

Setting Characteristic Lines

Manual Welding Mode

Secondary Parameter Adjustment

Tiptronic Functionality

Activating Tiptronic

Saving Tiptronic Jobs

Editing Job Text Labels

Selecting Tiptronic Jobs

Active Job Summary Display

Copying Tiptronic Jobs

Deleting Tiptronic Jobs

Resetting Machine Settings

Menu Structure Navigation

Error Messages and Codes

Troubleshooting Guide

Repair and Maintenance

Regular Machine Checks

Welding Torch Care

Technical Data Specifications

Spare Parts List Overview

Schematic Diagrams

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