Jasic MIG 250S User Manual (English)

Questions and Answers:

R
Richard ByrdAug 14, 2025
Why is the protection LED on my Jasic Welding System?
- M
  mbryanAug 14, 2025
  If the protection LED is illuminated on your Jasic Welding System, it could indicate a fault or interference. Try restarting the machine. If the issue persists, it's recommended to contact a service center. Also, ensure you are operating the system according to the operator's manual regarding welding current and working time. Verify the fan's operation during welding. If the fan isn't running, check for a 230V power supply. If the power supply is present, inspect the fan itself; otherwise, check the power supply cable. If the thermal switch is damaged, consider replacing it.
D
Dr. Kenneth Payne Jr.Aug 18, 2025
How to reduce excessive spatter in MMA with Jasic MIG 250S?
- T
  Tonya WongAug 18, 2025
  If your Jasic Welding System exhibits excessive spatter during MMA, the output polarity connection might be incorrect. Try exchanging the polarity.
J
Jordan MorrisAug 21, 2025
What to do if Jasic MIG 250S has no output current but wire feeder works?
- A
  Amber MarshAug 21, 2025
  If your Jasic Welding System's torch trigger is pushed, wire feeder works and gas comes out, but there's no output current and the protection LED is off, check the work cable to ensure it's making good contact. Also, verify that the wire feeder cable is correctly connected and that the welding torch isn't damaged.
A
Ashley ObrienAug 25, 2025
Why is the gas regulator not heating on my Jasic MIG 250S?
- S
  Sarah HudsonAug 25, 2025
  If your Jasic Welding System's gas regulator isn't heating, first, check if the heater plug is securely plugged in. Next, verify the condition of the resettable fuse inside the machine. Finally, inspect the heater inside the gas regulator for any damage.
J
Jill DawsonAug 28, 2025
Why is the current too high on my Jasic Welding System?
- J
  joelnelsonAug 28, 2025
  If your Jasic Welding System allows welding when the torch trigger is pushed, but the current is too high, the voltage cannot be adjusted, and the no-load voltage is too high, check if the control cable of the wire feeder is broken. Also, check if the control PCB of the welding machine has failed and inspect the voltage/current feedback wire for breaks.
N
nicholas34Aug 31, 2025
Why is there no gas flow in my Jasic Welding System?
- D
  Destiny PittsAug 31, 2025
  If there's no gas flow when you push the torch trigger on your Jasic Welding System, but the wire feeder works normally, it could be due to a damaged control PCB or a clogged/damaged solenoid valve.
N
Nicole FoxSep 3, 2025
How to protect weld bead on Jasic MIG 250S Welding System?
- W
  williamsjacquelineSep 3, 2025
  If your Jasic Welding System's weld bead is not well protected, avoid moving the welding torch away immediately after stopping welding to allow the shielding gas to protect the weld bead. You can also prolong the post-flow time of the shielding gas.
A
Alyssa BakerSep 7, 2025
What to do if Jasic MIG 250S Welding System has output current but the wire feeder doesn't feed wire?
- M
  Michael CuevasSep 7, 2025
  If your Jasic Welding System has output current when pushing the torch trigger to feed gas, but the wire feeder doesn't feed wire, check the control cable of the wire feeder for breaks. Also, check if the wire feeder is blocked or damaged, and verify if the wire feed PCB of the welding machine has failed.
V
Victor RobinsonSep 10, 2025
What to do if Jasic Welding System has no response when pushing the torch trigger?
- R
  Robert ClarkSep 10, 2025
  If there is no response when pushing the torch trigger and the protection LED is off on your Jasic Welding System, check if the power LED and the digital meter illuminate. Also, check if the torch trigger is in good contact and if the welding torch is correctly connected. Finally, verify that the wire feeder is correctly connected.

Jasic MIG 250S Specifications

General

Brand	Jasic
Model	MIG 250S
Category	Welding System
Language	English

Summary

Safety Precautions

Prevention against electric shock

Ensures safe operation by proper installation, grounding, and avoiding contact with live electrical parts.

Safety against fumes and welding gases

Highlights the need for ventilation, respirators, and awareness of hazardous gases generated during welding.

Prevention against burns and radiation

Advises on protective gear and practices to prevent burns and eye/skin damage from arc rays and hot materials.

Precautions against fire and explosion

Details measures to prevent fires, including clearing flammables and avoiding welding containers.

Risks due to magnetic fields

Warns about potential interference with electronic medical equipment by magnetic fields.

Handling of Compressed gas cylinders and regulators

Provides guidance on the safe handling and maintenance of gas cylinders and regulators.

Product Overview

Advanced IGBT inverter technology

Explains the benefits of IGBT technology for size reduction, efficiency, and noise elimination.

Electronic control mode

Details the stable voltage output, adjustable characteristics, and arc ignition features.

Improved functional design

Highlights features like a separate wire feeder, portability, and user-friendly controls.

2T and 4T welding modes

Describes the two available welding operation modes for different welding scenarios.

Wire inch button

Describes the function of the button used for manual wire feeding.

Technical Data

Controls

Front view

Identifies and describes the controls and indicators located on the front panel of the welding machine.

Rear View

Details the connections and controls found on the rear panel of the welding machine.

Wire feed control

Explains the knobs and switches for controlling wire feed speed and selection.

Installation

Input connection

Specifies requirements and procedures for connecting the machine to the power supply.

Output connections

Guides on connecting electrode holders, work return leads, and other output terminals.

MIG / MAG (GMAW)

Details the connection process for MIG/MAG welding, including wire feeder and cables.

Installation of the cylinder

Instructions for securely connecting the gas cylinder and regulator to the wire feeder.

Operation

MMA

Step-by-step guide for setting up and operating the machine for MMA welding.

MIG/MAG

Procedures for MIG/MAG welding setup, including gas flow and current adjustments.

Gas selection

Explains different shield gases (MIG, MAG, CO2) and their applications in welding.

Shield gas flow selection

Provides recommended shield gas flow rates for various welding modes and wire types.

Maintenance and Troubleshooting

Troubleshooting

General advice and precautions for diagnosing and resolving common issues with the welding machine.

Protection LED warnings

Explains the meaning of 'Over current' and 'Overload' LEDs and their implications.

Malfunction Phenomena

Lists common malfunctions and provides corresponding solutions for the welding equipment.

Electrical Schematic

Parts List

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Jasic MIG 250S User Manual

Table of Contents

Questions and Answers:

Jasic MIG 250S Specifications

Summary

Safety Precautions

Prevention against electric shock

Safety against fumes and welding gases

Prevention against burns and radiation

Precautions against fire and explosion

Risks due to magnetic fields

Handling of Compressed gas cylinders and regulators

Product Overview

Advanced IGBT inverter technology

Electronic control mode

Improved functional design

2T and 4T welding modes

Wire inch button

Technical Data

Controls

Front view

Rear View

Wire feed control

Installation

Input connection

Output connections

MIG / MAG (GMAW)

Installation of the cylinder

Operation

MMA

MIG/MAG

Gas selection

Shield gas flow selection

Maintenance and Troubleshooting

Troubleshooting

Protection LED warnings

Malfunction Phenomena

Electrical Schematic

Parts List

Related product manuals