ENGLISH
OM-225 389 Page 27
4-4. Troubleshooting
Refer to Section 4-3 for any Help (HLP) message displayed on voltmeter/ammeter.
.
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.
There are no user serviceable parts inside unit.
Trouble Remedy
No weld output; unit completely
inoperative.
Place machine power switch in On position (see Section 3-1).
Place line disconnect switch in On position (see Section 2-16).
Check and replace line fuse(s), if necessary (see Section 2-16).
Check for proper input power connections (see Section 2-16).
No weld output; unit on. Check, repair, or replace remote control.
Have Factory Authorized Service Agent check unit.
Unit provides only maximum or
minimum weld output.
Make sure Amperage control is in proper position (see Section 3-1).
Have Factory Authorized Service Agent check unit.
Erratic or improper weld output.
Use proper size and type of weld cable (see Section 2-9).
Clean and tighten all weld connections.
Lay weld cables out straight, do not leave weld cables coiled.
Check position of Output Selector control (see Section Figure 3-1).
If using remote control, check position of Amperage Adjustment control (see Section 3-1).
No control of weld output. Make sure Amperage control is in proper position (see Section 3-1).
Lack of high frequency; difficulty in
starting GTAW arc.
Select proper size tungsten (see Section 7-1).
Be sure torch cable is not close to any grounded metal.
Check cables and torch for cracked insulation or bad connections. Repair or replace.
Check spark gaps (see Section 4-2).
Wandering arc − poor control of
direction of arc.
Reduce gas flow rate (see Section 2-13).
Select proper size tungsten (see Section 7-1).
Properly prepare tungsten (see Section 7-2).
Tungsten electrode oxidizing and not
remaining bright after conclusion of
weld.
Shield weld zone from drafts.
Increase postflow time (see Section 3-8).
Check and tighten all gas fittings.
Properly prepare tungsten (see Section 7-2).
Fan not operating. Unit equipped with Fan-On-Demandt. Fans run only when necessary. Unit equipped with circuitry to
protect against overheating.
No weld output; fan does not run. Place line disconnect switch in On position (see Section 2-16).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 2-16).
Check for proper input power connections (see Section 2-16).
No weld output; fan on. Be sure Output Selector switch is not set between positions (see Section 3-1).
Tighten remote control connection to Remote 14 receptacle (see Section 2-10).
Check remote control (see remote control Owner’s Manual).
Unit overheated. Allow unit to cool (see Section 2-6).
Fan not operating; weld output
available.
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor.
To Next Page
Loading...
