TW5700 Troubleshooting
Problem
Possible Cause
Fix
Unit stops welding,
overtemp LED is on
Over heating
1.
If the fan is running, allow unit to cool
2.
Slow down welding rate (fewer studs per minute)
3.
Any fault in the overtemp thermostat circuit will shut the
system down
Weld output erratic or weak
Adjustments or
settings
1.
Check welding hand tool set up, lift, plunge, and
accessory adjustments
2.
Check ALL weld current carry leads and connections,
including grounds
3.
Test the power loop by making welds on a test piece
using only the starter cable set
4.
Test 3 phase power to control contactor
5.
Check taps (if applicable) on main transformer
Weld gun lifts, but does not
plunge
Gun maintenance
If this happens, it is most likely binding inside of the gun.
Perform routine gun maintenance or replace gun if needed
Note
-
Always turn off power to the welder before working on or testing components
within the welder. Contact a TRU
-
WELD representative for replacement parts and for
servicing welding equipment.
25
