Miller Electric XMT 4-Rack - Manual (Page 16)

OM-815 Page 12
5-2. Overload Protection
1 Power Circuit Breakers
CB1-CB4
Each Power circuit breaker CB1
through CB4 protects the welding
power source connected to it from
overload.
If a Power circuit breaker opens,
the matching welding power source
would shut down. Manually reset
the Power circuit breaker.
ST-158 333 / Ref. ST-155 839 / Ref. ST-151 269-B
1
Figure 5-2. Circuit Breaker Locations
5-3. Troubleshooting
ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Turn Off welding power sources, and disconnect input power to rack before inspecting, maintaining, or servicing.
Troubleshooting to be performed only by qualified persons.
WARNING
Table 5-1. Rack Trouble
Trouble Remedy Section
No weld output from any welding power
sources; units completely inoperative. Place line disconnect switch in On position. 4-6
Check line fuse(s) and replace if needed. Reset circuit breakers. 4-6
Check for proper input power connections to rack. 4-6
No weld output from one welding power
source. Place applicable Power circuit breaker in On position. 5-2
Check for proper input power connections to welding power source. 4-3
Check applicable welding power source according to its manual. – –