Specifications

OM-2242 Page 14
SECTION 5 − MAINTENANCE AND TROUBLESHOOTING
5-1. Routine Maintenance
 Disconnect power before maintaining.
 Maintain more often during severe conditions.
3 Months
Replace
unreadable
labels.
Replace Damaged
Gas Hoses
Repair Or Replace
Cracked Cables
And Cords
6 Months
Blow out inside. Direct airflow through front and back louvers.
 Do not remove case when blowing out inside of unit .
5-2. Troubleshooting
Trouble Remedy
No weld output; unit completely inop-
erative; ready light (LED) Off.
Place line disconnect switch in On position.
No weld output; unit completely inop-
erative; ready light (LED) Off.
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.
No weld output; ready light (LED) On. Check and secure loose weld cable(s) into receptacle(s).
Check and correct poor connection of work clamp to workpiece.
No weld output; high temperature light
(LED) On.
Unit overheated causing thermal shutdown. Allow unit to cool with fan On (see Section 3-2).
No weld output; high temperature light
(LED) On.
Reduce duty cycle or amperage.
Check and correct blocked/poor airflow to unit (see Section 3-4).
No weld output; high temperature light
(LED) Flashing.
Turn Power Off and back On again. If light continues to flash, check with Factory Authorized Service
Agent.
No weld output. Blue light (LED) flashe
s
continuously, yellow light (LED) off.
Line voltage too high or too low. Line voltage must be within ±10%.
continuously, yellow light (LED) off.
Unit needs to rest. Cycle power off and back on. If problem is not corrected, contact Factory Authorized
Service Agent.
No weld output. Blue light (LED) flashes
3 times repeatedly, yellow light (LED) off.
Remote trigger left on. Turn off remote trigger, wait 5 seconds, and restart operation.
Erratic or improper welding arc or out-
put.
Use proper size and type of weld cable (see your Distributor).
Erratic or improper welding arc or out-
put.
Clean and tighten weld connections.
Check and reverse polarity; check and correct poor connections to workpiece.
Fan not operating. 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.
Stick welding problems: Hard starts
;
poor welding characteristics; unusual
Use proper type and size of electrode.
poor welding characteristics; unusual
spattering.
Check and reverse electrode polarity; check and correct poor connections.
Make sure a remote control is not connected.
TIG welding problems: Wandering arc
;
hard starts; poor welding characteris-
Use proper type and size of tungsten.
hard starts; poor welding characteris-
tics; spattering problems.
Use properly prepared tungsten.
Check and reverse electrode polarity.
TIG welding problems: Tungsten elec
-
trode oxidizing and not remaining bright
Shield weld zone from drafts.
TIG welding problems: Tungsten elec-
trode oxidizing and not remaining brigh
t
after welding.
Check for correct type shielding gas.
after welding.
Check and tighten gas fittings.
Check and change electrode polarity.