Idiomas disponibles
Idiomas disponibles
5-4. Troubleshooting
Trouble
No weld output; unit completely
inoperative.
inoperative.
No weld output; unit on.
Only maximum or minimum weld out-
put available.
Erratic or improper weld output.
Lack of high frequency; difficulty in
starting GTAW arc.
Wandering arc − poor control of arc.
Tungsten electrode oxidizing and not
remaining bright after conclusion of
remaining bright after conclusion of
weld.
weld.
No weld output; fan does not run.
Fan not operating; weld output
available.
available.
OM-361 Page 16
NOTE: The remedies listed below are recommendations only. If these remedies do not fix
the trouble with your unit, have a Factory Authorized Service Agent check unit.
Refer to Section 5-3 for any Help (HLP) message displayed on voltmeter/ammeter.
Place machine power switch in On position (see Section 4-1).
Place line disconnect switch in On position (see Section 3-10).
Check and replace line fuse(s), if necessary (see Section 3-10).
Check for proper input power connections (see Section 3-10).
Tighten remote control connection (see Section 3-6).
Be sure Output Selector switch is not set between positions(see Section 4-1).
Check, repair, or replace remote control.
Unit overheated. (see Section 3-2).
Make sure Amperage control is in proper position (see Section 4-1).
Use proper size and type of weld cable (see Section 3-5).
Clean and tighten all weld connections.
Check position of Output Selector control (see Section Figure 4-1).
If using remote control, check position of Amperage Adjustment control (see Section 4-1).
Select proper size tungsten (see Section 7-1).
Select proper arc starting mode (see Section 4-4).
Be sure torch cable is not close to any grounded metal.
Check cables and torch for cracked insulation or bad connections. Repair or replace (see Section
5-1).
Check spark gaps (see Section 5-2).
Reduce gas flow rate (see Section 3-6).
Select proper size tungsten (see Section 7-1).
Properly prepare tungsten (see Section 7-2).
Shield weld zone from drafts.
Increase postflow time (see Section 4-3).
Check and tighten all gas fittings (see Section 3-6).
Properly prepare tungsten (see Section 7-2).
Place line disconnect switch in On position (see Section 3-10).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 3-10).
Check for proper input power connections (see Section 3-10).
Fans run only when necessary.
Check for and remove anything blocking fan.
Remedy
