Miller Subarc DC 1000 Manuale d'uso - Pagina 35
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5-3. Access Area Circuit Breakers
5-4. Troubleshooting
Trouble
No weld output; unit completely in-
operative.
No weld output; pilot light On.
Erratic or improper weld output.
No 115 volts ac output at duplex
receptacle, terminal strip TE3, and Re-
mote 14 receptacle.
No 230 volts ac output at duplex recep-
tacle.
No 24 volts ac output at terminal strip
TE3 and Remote 14 receptacle.
No 42 volts ac output at terminal strip
TE3.
Place line disconnect switch in On position (see Section 2-15).
Check fuses F1 and F2 and replace if necessary (see Section 5-2).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 2-15).
Check for proper input power connections (see Section 2-15).
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 2-2).
Have Factory Authorized Service Agent check control board PC1.
Use proper size and type of weld cable (see Section 2-8).
Clean and tighten all weld connections.
Have Factory Authorized Service Agent check control board PC1.
Reset circuit breaker CB1 (see Section 2-12).
Reset circuit breaker CB4 (see Section 2-13).
Reset circuit breaker CB2 (see Section 5-3).
Reset circuit breaker CB3 (see Section 5-3).
Y Turn Off welding power
source and disconnect input
power before checking cir-
cuit breakers.
1
Circuit Breaker CB2
CB2 protects the 24 VAC portion of
terminal strip TE3 and the Remote
14 receptacle.
2
Circuit Breaker CB3
CB3 protects the 42 VAC portion of
terminal strip TE3.
1
Press button to reset breaker.
CB2
2
CB3
Remedy
Ref. ST-175 086 / ST-801 882-A
OM-2221 Page 31