Miller PU 301, Owner'S Manual, Page: 10 / 16

OM-180 231 Page 6
4-3. Troubleshooting
Trouble Remedy
Coolant system does not work. Be sure input power cord is plugged in to energized receptacle.
Check line fuses or circuit breaker, and replace or reset if necessary.
Motor overheated. Unit starts running when motor has cooled.
Have Factory Authorized Service Agent check Power switch and motor.
Decreased or no coolant flow. Add coolant.
Check for clogged hoses or coolant filter.
Disconnect pump, and check for sheared coupling. Replace coupling if necessary.
SECTION 5 − ELECTRICAL DIAGRAMS
135 796-D
Figure 5-1. Circuit Diagram