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SECTION 5 – MAINTENANCE AND TROUBLESHOOTING
5-1. Routine Maintenance
3 Months
Replace
unreadable
labels.
6 Months
Do not remove case when blowing out inside of unit.
Blow out inside. Direct airflow through front and back louvers.
5-2. Troubleshooting
Trouble
No weld output; unit completely
inoperative; ready light (LED) Off.
No weld output; ready light (LED) On.
No weld output; high temperature light
(LED) On.
No weld output; high temperature light
(LED) Flashing.
No weld output. Blue light (LED)
flashes continuously, yellow light
(LED) off.
No weld output. Blue light (LED) flashes
3 times repeatedly, yellow light (LED) off.
Erratic or improper welding arc or
output.
Fan not operating.
Stick welding problems: Hard starts;
poor welding characteristics; unusual
spattering.
TIG welding problems: Wandering arc;
hard starts; poor welding characteris-
tics; spattering problems.
TIG welding problems: Tungsten
electrode oxidizing and not remaining
bright after welding.
OM-221 022 Page 14
Disconnect power before maintaining.
Maintain more often during severe conditions.
Replace Damaged
Gas Hoses
Place line disconnect switch in On position.
Check and replace line fuse(s), if necessary, or reset circuit breaker.
Be sure power cord is plugged in and that receptacle is receiving input power.
Check and secure loose weld cable(s) into receptacle(s).
Check and correct poor connection of work clamp to workpiece.
Unit overheated causing thermal shutdown. Allow unit to cool with fan On (see Section 3-2).
Reduce duty cycle or amperage.
Check and correct blocked/poor airflow to unit (see Section 3-4).
Turn Power Off and back On again. If light continues to flash, check with Factory Authorized
Service Agent.
Line voltage to high or to low. Line voltage must be within ±10%.
Unit needs to rest. Cycle power off and back on. If problem is not corrected, contact Factory
Authorized Service Agent.
Remote trigger left on. Turn off remote trigger, wait 5 seconds, and restart operation.
Use proper size and type of weld cable (see your Distributor).
Clean and tighten weld connections.
Check and reverse polarity; check and correct poor connections to workpiece.
Unit not warmed up enough to require fan cooling.
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor and control circuitry.
Use proper type and size of electrode.
Check and reverse electrode polarity; check and correct poor connections.
Make sure a remote control is not connected.
Use proper type and size of tungsten.
Use properly prepared tungsten.
Check and reverse electrode polarity.
Shield weld zone from drafts.
Check for correct type shielding gas.
Check and tighten gas fittings.
Check and change electrode polarity.
Repair Or Replace
Cracked Cables
And Cords
Remedy
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