Miller Electric 340 - Manual (Page 13)

OM-193 696 Page 9
SECTION 4 – MAINTENANCE AND TROUBLESHOOTING
4-1. Routine Maintenance
Y Disconnect power before maintaining.
3 Months
Replace unreadable labels. Repair or replace
cracked weld cable.
Clean and tighten weld terminals.
6 Months
Blow out or vacuum inside. During
heavy service clean monthly.
OR
4-2. Troubleshooting
Trouble Remedy
No weld output; fan does not run. Be sure line disconnect switch is in On position.
Check and replace line fuses if open. Reset breakers if necessary.
Fan does not run; weld output okay. Be sure nothing is blocking movement of fan. If fan does not run freely, replace fan motor.
Erratic weld current. Clean and tighten all weld cable connections.
Erratic arc with excessive spatter. Use dry, properly stored electrodes.
Shorten arc length.
Reduce amperage setting.
Electrode freezing to work. Increase amperage setting.
Increase arc length.
Use dry, properly stored electrodes.