Miller Auto Deltaweld 452 Benutzerhandbuch - Seite 28

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Miller Auto Deltaweld 452 Benutzerhandbuch

6-4. Troubleshooting Table

Trouble
No weld output; unit completely
inoperative.
No weld output; Power switch pilot light
on; fan on.
Unit provides only maximum or mini-
mum weld output.
Erratic or improper weld output.
No 115 volts ac output at duplex
receptacle or Remote 14 receptacle.
No 24 volts ac output at Remote 14 re-
ceptacle.
Fan not operating. Note: fan runs only
when cooling is necessary.
OM-223 Page 24
Place line disconnect switch in On position (see Section 4-13).
Check fuse F1, and replace if necessary (see Section 6-2).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-13).
Check for proper input power connections (see Section 4-13).
Check for proper jumper link position (see Section 4-13).
If using wire feeder, place Output (Contactor) switch in Remote 14 position, and connect wire feeder
(see Sections 4-10 and 4-9). If feeder is not being used, place switch in On position (see Section 5-1).
Check, repair, or replace feeder (see wire feeder Owner's Manual).
Unit overheated. Allow unit to cool with fan On (see Section 4-2).
Have Factory Authorized Service Agent check control board PC1.
Have Factory Authorized Service Agent check control board PC1.
Use proper size and type of weld cable (see Section 4-8).
Clean and tighten all weld connections.
Check wire feeder installation according to Owner's Manual.
Have Factory Authorized Service Agent check control board PC1 and/or SCR in main rectifier.
Reset circuit breaker CB1 (see Section 4-7).
Reset circuit breaker CB2 (see Section 4-7).
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor.
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Remedy