Jasic MIG 350 Compact User Manual (English)

Questions and Answers:

S
sandra35Aug 17, 2025
Why is there no gas flow when I depress the MIG torch trigger switch on my Jasic Welding System?
- D
  Daniel Stewart DDSAug 17, 2025
  Several factors could be at play. The gas cylinder might be empty, so try replacing it. The gas regulator could be turned off, so ensure it is turned on. The gas hose might be blocked or cut, requiring inspection, repair, or replacement. Finally, the torch trigger switch lead could be disconnected, or the switch/lead itself might be faulty; in this case, reconnect or replace the faulty component.
J
Jennifer JenkinsAug 20, 2025
What to do if the power LED is off and the fan isn't working on my Jasic MIG 350 Compact Welding System?
- S
  Samantha WeeksAug 20, 2025
  First, ensure the primary supply voltage is switched ON and check if the input fuse has blown; replace it if necessary. Next, verify that the welding power source input switch is turned ON. Lastly, check for any loose internal connections and secure them.
D
David EstradaAug 23, 2025
Why does the overheat LED light up on my Jasic MIG 350 Compact Welding System?
- P
  Pamela GarciaAug 23, 2025
  The Overheat LED lights up because of insufficient cooling air or the cooling fan is not running. Let the machine cool; it will automatically start again. Also, ensure the cooling fan is operational.
B
bradyjoshuaAug 26, 2025
What to do if the fault LED is on and the fan is running on my Jasic MIG 350 Compact?
- V
  Victor ThompsonAug 26, 2025
  The machine may be under over-heating protection status. Allow the machine to cool; it can recover automatically. Also, check incoming mains supply to ensure it is within 230V +/- 15%.
M
Mr. Marcus DrakeAug 28, 2025
Why does wire continue to feed through when the MIG torch switch is released on my Jasic MIG 350 Compact Welding System?
- R
  Rose FletcherAug 28, 2025
  This issue can occur if the trigger mode switch is set to 4T rather than 2T; change the trigger mode switch to 2T. It could also indicate a faulty MIG torch switch, which would need replacement.
K
Karen DennisAug 31, 2025
Why is it difficult to ignite the arc on my Jasic MIG 350 Compact Welding System?
- R
  romeroerinAug 31, 2025
  The welding voltage may be too low, or the wire feed speed may be set too high. Adjust the welding voltage and wire feed speed accordingly.
C
Christine CarterSep 2, 2025
What to do if welding current reduces when welding with my Jasic Welding System?
- S
  Susan BeckSep 2, 2025
  This is likely due to a poor work lead connection to the work piece. To resolve this, improve the work lead connection.
M
Mark ChenSep 5, 2025
What to do if the wire feed motor does not rotate when the MIG torch trigger switch is depressed on my Jasic MIG 350 Compact?
- M
  Mary GrahamSep 5, 2025
  The wire feed speed may be set to zero; increase wire feed speed. Check the supply to the wire feed motor. The motor PCB may be faulty; replace the Motor PCB.
E
Edward PriceSep 8, 2025
Why does the TIG electrode melt when the arc is struck with my Jasic MIG 350 Compact?
- E
  Erin MurraySep 8, 2025
  The TIG torch is likely connected to the (+) VE terminal. Reconnect the TIG torch to the correct terminal.
B
Brendan Hart IIISep 12, 2025
Why is there excessive spatter in MMA welding with my Jasic Welding System?
- B
  brian56Sep 12, 2025
  The output polarity connection is incorrect. Exchange the polarity.

Jasic MIG 350 Compact Specifications

General

Output Current Range	30-350 A
Voltage Range	16-32 V
Duty Cycle	60% at 350 A
Wire Feed Speed	2-18 m/min
Efficiency	85%
Power Factor	0.93
Protection Class	IP21S
Insulation Class	F
Wire Diameter	1.2 mm

Summary

Safety Instructions

Use of Personal Protective Equipment (PPE)

Essential protective gear and measures for welding safety.

Welding and Cutting Lens Shade Selector Guide

Table guiding appropriate lens shade for different welding processes and currents.

Safety Against Fumes and Welding Gases

Hazards of welding fumes and gases and necessary precautions.

Precautions Against Fire and Explosion

Safety measures to prevent fires and explosions during welding operations.

The Working Environment

Guidelines for safe and suitable operating environments for welding equipment.

Protection From Moving Parts

Safety warnings regarding moving parts within the welding machine.

Risks Due to Magnetic Fields

Potential health risks associated with magnetic fields generated by welding equipment.

Handling of Compressed Gas Cylinders and Regulators

Safe procedures for handling gas cylinders and pressure regulators.

RF Declaration

Electromagnetic compatibility declaration regarding radio frequency emissions.

LF Declaration

Declaration concerning power supply requirements and network quality impact.

Materials and Their Disposal

Information on material composition and proper disposal of the equipment.

Product Overview

Jasic MIG 202C, MIG 252C and MIG 352C Product Features

Key features and specifications of the Jasic MIG welding machine series.

Technical Specifications

Controls

Front View Controls (MIG 202C/252C)

Identification of controls on the front panel for MIG 202C and 252C models.

Front View Controls (MIG 352C)

Identification of controls on the front panel for the MIG 352C model.

Inside View Controls

Overview of internal components and controls.

Rear View Controls

Overview of rear panel connections and features.

Front Panel Control Details (MIG 202C/252C)

Detailed description of front panel controls and indicators for MIG 202C/252C.

Front Panel Control Details (MIG 352C)

Detailed description of front panel controls and indicators for MIG 352C.

Installation

Unpacking, Location, and Connections

Procedures for unpacking, siting, and connecting the welding machine.

MMA Welding Installation

Steps for connecting leads for MMA welding mode.

MIG Welding Installation

Procedure for setting up the machine for MIG welding.

Gasless MIG Welding Installation

Setup steps for gasless MIG welding operation.

Operation

MMA Welding Mode Operation

Step-by-step guide for operating the machine in MMA welding mode.

MIG/MAG Welding Mode Operation

Detailed instructions for performing MIG/MAG welding operations.

MIG - Gasless Operation

Procedure for gasless MIG welding, including polarity reversal.

TIG Welding Mode Operation (JM-352C Only)

Instructions for operating the machine in TIG welding mode, specific to JM-352C.

Guide to MMA Welding

Notes for the Welding Beginner

Basic guidance and tips for individuals new to MMA welding.

Welding Position

Recommended welding positions and posture.

MMA Process Features and Benefits

Advantages and characteristics of the MMA welding process.

MMA Process Tips and Guides

Practical advice and setup guides for MMA welding.

Joint Forms in MMA Welding

Common joint configurations used in MMA welding applications.

MMA Arc Striking Methods

Techniques for initiating the welding arc in MMA welding.

Electrode Positioning

Guidelines for positioning the electrode for various welding positions.

Fillet Welding

Specifics on performing fillet welds with MMA.

Manipulation of Electrode

Different motions used at the end of the electrode during MMA welding.

Weld Characteristics

Criteria for identifying good and poor weld bead quality in MMA.

MMA Welding Problems

Arc Welding Defects and Prevention Methods

Common defects in MMA welding and their corrective actions.

Guide to MIG/MAG Welding

Notes for the Welding Beginner

Introductory guidance for new MIG/MAG welders.

MIG/MAG Process Features and Benefits

Advantages and characteristics of MIG/MAG welding processes.

Welding Position

Recommended welding positions and posture for MIG/MAG.

MIG Process Description

Explanation of the MIG welding process and its evolution.

MIG Controls

Explanation of key controls for the MIG/MAG welding system.

Wire Inch Switch

Function of the wire inch button for feeding wire.

Burn Back Control Dial

Adjustment of wire stick-out after welding stops.

Inductance Control (MIG 352C Only)

Fine-tuning the welding arc for spatter and penetration.

MIG Set-Up Guide

MIG Welding Problems

MIG Welding Defects and Prevention Methods

Common issues in MIG welding and their corrective actions.

MIG Welding Defects and Prevention Methods

Further common issues and solutions for MIG welding.

MIG Torch Spare Parts List

JM-202C MIG Torch Spare Parts

List of spare parts for the JM-202C MIG welding torch.

JM-252C MIG Torch Spare Parts

List of spare parts for the JM-252C MIG welding torch.

JM-352C MIG Torch Spare Parts

List of spare parts for the JM-352C MIG welding torch.

Guide to TIG Welding

DC Welding and Techniques

Explanation of DC welding and recommended TIG welding techniques.

TIG Welding Amperage Guide

Table of recommended amperage settings for TIG welding different materials.

TIG Torch Components

Description of the various parts of a TIG welding torch.

TIG Welding Electrodes and Preparation

Information on TIG electrodes, their types, and preparation.

TIG Welding Consumables and Arc Starting

Details on filler wires, gases, and Lift TIG arc starting.

TIG Welding Problems

TIG Welding Defects and Prevention Methods

Common TIG welding defects and their solutions.

TIG Welding Defects and Prevention Methods

Further TIG welding defects and corrective actions.

Maintenance

Daily, Monthly, and Yearly Examinations

Schedule and procedures for routine maintenance checks.

Service Schedule Record

Log for recording maintenance and service history.

Troubleshooting

Troubleshooting Common Faults

Guide to identifying and resolving common operational issues and faults.

EC Declaration of Conformity

WEEE Disposal

Guidelines for the proper disposal of waste electrical and electronic equipment.

RoHS Compliance Declaration

Declaration of compliance with restrictions on hazardous substances.

Statement of Warranty

Schematic

Wiring Diagram for the JM-202C & JM-252C

Electrical wiring diagram for the JM-202C and JM-252C models.

Wiring Diagram for the JM-352C

Electrical wiring diagram for the JM-352C model.

Options and Accessories

Torch Options and Accessories

List of available torches and related accessories for the welding machines.

Drive Roll Options

Selection of drive rolls compatible with different welding machine models.

Related product manuals

Jasic MIG 350 Pulse Separate

Jasic MIG 270 Separate

Jasic MIG 350 Compact User Manual

Table of Contents

Questions and Answers:

Jasic MIG 350 Compact Specifications

Summary

Safety Instructions

Use of Personal Protective Equipment (PPE)

Welding and Cutting Lens Shade Selector Guide

Safety Against Fumes and Welding Gases

Precautions Against Fire and Explosion

The Working Environment

Protection From Moving Parts

Risks Due to Magnetic Fields

Handling of Compressed Gas Cylinders and Regulators

RF Declaration

LF Declaration

Materials and Their Disposal

Product Overview

Jasic MIG 202C, MIG 252C and MIG 352C Product Features

Technical Specifications

Controls

Front View Controls (MIG 202C/252C)

Front View Controls (MIG 352C)

Inside View Controls

Rear View Controls

Front Panel Control Details (MIG 202C/252C)

Front Panel Control Details (MIG 352C)

Installation

Unpacking, Location, and Connections

MMA Welding Installation

MIG Welding Installation

Gasless MIG Welding Installation

Operation

MMA Welding Mode Operation

MIG/MAG Welding Mode Operation

MIG - Gasless Operation

TIG Welding Mode Operation (JM-352C Only)

Guide to MMA Welding

Notes for the Welding Beginner

Welding Position

MMA Process Features and Benefits

MMA Process Tips and Guides

Joint Forms in MMA Welding

MMA Arc Striking Methods

Electrode Positioning

Fillet Welding

Manipulation of Electrode

Weld Characteristics

MMA Welding Problems

Arc Welding Defects and Prevention Methods

Guide to MIG/MAG Welding

Notes for the Welding Beginner

MIG/MAG Process Features and Benefits

Welding Position

MIG Process Description

MIG Controls

Wire Inch Switch

Burn Back Control Dial

Inductance Control (MIG 352C Only)

MIG Set-Up Guide

MIG Welding Problems

MIG Welding Defects and Prevention Methods

MIG Welding Defects and Prevention Methods

MIG Torch Spare Parts List

JM-202C MIG Torch Spare Parts

JM-252C MIG Torch Spare Parts

JM-352C MIG Torch Spare Parts

Guide to TIG Welding

DC Welding and Techniques

TIG Welding Amperage Guide

TIG Torch Components

TIG Welding Electrodes and Preparation

TIG Welding Consumables and Arc Starting

TIG Welding Problems

TIG Welding Defects and Prevention Methods

TIG Welding Defects and Prevention Methods

Maintenance

Daily, Monthly, and Yearly Examinations

Service Schedule Record

Troubleshooting