BASIC TROUBLESHOOTING
56
MANUAL 430429-490
A. No Weld Output; Unit is Completely Inoperative
1. Line disconnect switch is in OFF position.
a. Place line disconnect switch in ON position.
2. Linefuse(s) open
a. Check and replace line fuse(s).
3. Improper electrical input connections
a. See Section 2.04, Electrical Input Requirements, for proper input
connections.
4. MAIN CIRCUIT BREAKER in OFF position
a. Check and reset MAIN CIRCUIT BREAKER if necessary.
5. Input line breaker tripped
a. Check primary supply breaker.
6. Loose welding cable connections
a. Tighten all welding cable connections.
7. Improper setup
a. Check for proper connection of input power.
8. Faulty Remote Device
a. Check all remote devices and repair or replace if necessary.
B. Erratic or Improper Weld Output
1. Loose welding cable connections
a. Tighten all welding cable connections.
2. Incorrect welding cable size
a. Use Proper size and type of cable (see Table 3, section 3.02.8).
3. Improper input connections
a. Refer to Section 2.04 Electrical Input Connections.
4. Poor electrode condition
a. Replace electrode.
5. If using a wire feeder, ensure that the wire is feeding at a consistent
rate.
a. Adjust wire feeder.
6. If in GTAW mode, check the condition of the tungsten electrode
a. Use the recommended 2% Thoriated tungsten.
7. In GTAW mode, incorrect argon gas flow
a. Verify that argon gas flow is correct.
8. Wrong welding polarity
a. Verify output torch connections.
C. Wandering Arc, Poor Control of Arc Direction
1. Wrong size tungsten electrode, typically lager than recommended
a. Use proper size electrode for amperage selected (see Table 2,
section 3.02.8).
2. Improperly prepared tungsten electrode
a. Prepare tungsten properly
3. Gas flow rate too high
a. Reduce flow rate.
4. Drafts blowing shielding gas away from tungsten electrode
a. Shield weld zone from drafts and check condition of tungsten
electrode.
5. Water in torch
a. Refer to torch parts list for part(s) requiring replacement and
repair torch as necessary.
