Basic Troubleshooting; Common Welding Operation Faults; Specific Problems - Thermal Arc 260S CC STICK Operating Instructions Manual

4.0 BASIC TROUBLESHOOTING

General
WARNING

4.01 Common Welding Operation Faults

4.02 Specific Problems

How to Use This Guide
MANUAL 430429-447
Troubleshooting and repairing this unit is a process which should be
undertaken only by those familiar with high voltage, high power electronic
equipment.
There are extremely dangerous voltage and power levels present inside
this unit. Do not attempt to diagnose or repair unless you have had training
in power electronics measurement and troubleshooting techniques.
The following are some of the more common operating faults that occur
during welding operations:
A. Power
Main power not connected
Main power not turned on
MAIN CIRCUIT BRAKER set on OFF position
INPUT SELECTOR (Easy Link )Switch in wrong position
B. Poor Weld
Wrong polarity
Wrong electrode used
Electrode not properly prepared
Incorrect welding amperage setting
Speed too slow or too fast
Incorrect switch settings for intended operation
Poor weld output connection(s)
If the problem is not resolved after checking the above, the following guide
may suggest more specific items to check given the faulty operating
symptom(s) you are experiencing.
The following information is a guide to help you determine the most likely
causes for various symptoms.
This guide is set up in the following manner:
A. Symptom (Bold Type)
Any special instructions (Text Type)
1. Cause (Italic Type)
a. Check/Remedy (Text Type)
Locate your symptom, check the cause(s) (the simplest or most likely is
listed first), then perform the remedy given. Repair as needed being sure to
verify that the unit is fully operational after any repairs.
27 BASIC TROUBLESHOOTING