Unitor UWI 202, Руководство пользователя

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OM-244 324 Page 20
5-3. Troubleshooting
Trouble Remedy
No weld output; unit completely
inoperative.
Place line disconnect switch in On position (see Section 3-13).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 3-13).
Check for proper input power connections (see Section 3-13).
No weld output; Output LED on. Input voltage outside acceptable range of variation (see Section 3-12).
No weld output; Overtemp LED on. Unit overheated. Allow unit to cool with fan On (see Sections 3-6).
Erratic or improper weld output. Use proper size and type of weld cable (see Section 3-8).
Clean and tighten all weld connections (see Section 3-8).
Fan not operating. Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor.
Wandering arc
Use proper size tungsten (see Section 7).
Use properly prepared tungsten (see Section 7).
Reduce gas flow rate (see Section 3-10).
Tungsten electrode oxidizing and not re-
maining bright after conclusion of weld. Shield weld zone from drafts.
Allow adequate postflow time to shield tungsten while it cools, after welding stops.
Check and tighten all gas fittings (see Section 3-10).
Water in torch. Refer to torch manual.