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INITIAL PROBLEMS DIAGNOSE
A new machine may have faults or manufacturing defects, such as unstable arc or poor welding quality.
Although it is still too early to judge whether the machine is defective or not.
If the above-mentioned problems occur with a new machine, a verification process should be followed
before returning it to the retailer.
The diagram below contains the items to be checked before using the welding machine for the first
time. Check the abnormal items “〇" associated with the identified problems, where appropriate.
Diagnosis of manufacturing defects
Abnormal Items
Check points and Maintenance
No Arc
No Gas Flow
No Wire Feed
Poor Arc Ignition
Unstable Arc
Dirt on Edge of Weld Seam
Wire Sticks to related material
Wire Sticks to Contact Tip
Porosity Formed
Distribution Boxes
(Input Protection
Devices)
1. Make sure the unit is turned on
2. Burnt fuse
3. Loose connection joint
〇〇〇〇〇〇
Input Cable
1. Check if the cable is severed.
2. Loose connection joint
3. Overheating
〇 〇〇〇
Power source
1. Make sure the unit is turned on
2. Phase problem
〇〇〇〇〇〇〇〇
Gas Cylinder and Gas
Regulator
1. Turn on gas supply
2. Residual quantity of gas in the cylinder
3. Adjust the flow value
4. Loose connection joint
〇〇
Gas supply hose (the
whole line, from the
high-pressure cylinder
to the welding gun)
1. Loose connection joint
2. Gas hose damaged
〇
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