Miller PipePro 304 Owner's Manual page 42

Trouble
Remote contactor control does not
activate contactor.
Lack of high frequency; difficulty in
establishing Gas Tungsten Arc Weld-
ing arc.
Wandering arc − poor control of arc
direction.
Tungsten electrode oxidizing and not
remaining bright after conclusion of
weld.
No 115 volt ac output at Remote 14 re-
ceptacle RC14.
No 24 volt ac output at Remote 14 re-
ceptacle RC14.
B. Generator Power
Trouble
No power output.
Low power output.
High power output.
Erratic power output.
OM-492 Page 38
Check and tighten connections to Remote 14 receptacle RC14 (see Section 5-8).
Use proper size tungsten for welding amperage.
Reduce leakage of high frequency from torch or work cable (check grounding, remove excessive
coils from weld cables, use shorter weld cables, etc.).
Check cables and torch for cracked or deteriorated insulation or bad connections. Repair or replace
necessary parts.
Reduce gas flow rate.
Select proper size tungsten. Properly prepare tungsten.
Shield weld zone from drafts.
Increase postflow time.
Check and tighten all gas fittings.
Properly prepare tungsten.
Reset circuit breaker CB5 (see Section 8-9).
Reset circuit breaker CB6 (see Section 8-9).
Reset circuit breakers (see Section 7-1).
Have Factory Authorized Service Agent check brushes, slip rings, power board PC7, voltage regulator
board PC8, interconnecting board PC2, and control board PC1.
Check air cleaner, and clean or replace element if necessary.
Check engine speed, and adjust if necessary (see Section 8-8).
See engine manual.
Check engine speed, and adjust if necessary (see Section 8-8).
Check receptacle wiring and connections.
Check governor according to engine manual.
Have Factory Authorized Service Agent check brushes, slip rings, power board PC7, voltage regulator
board PC8, interconnecting board PC2, and control board PC1.
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Remedy
Remedy