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OM-492 Page 34
Trouble Remedy
Remote contactor control does not
activate contactor.
Check and tighten connections to Remote 14 receptacle RC5 (see Section 4-8).
Lack of high frequency; difficulty in
establishing Gas Tungsten Arc Weld-
ing arc.
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.
Wandering arc – poor control of arc
direction.
Reduce gas flow rate.
Select proper size tungsten. Properly prepare tungsten.
Tungsten electrode oxidizing and not
remaining bright after conclusion of
weld.
Shield weld zone from drafts.
Increase postflow time.
Check and tighten all gas fittings.
Properly prepare tungsten.
No 115 volts ac output at Remote 14
receptacle RC5.
Reset circuit breaker CB12 (see Section 7-8).
No 24 volts ac output at Remote 14 re-
ceptacle RC5.
Reset circuit breaker CB11 (see Section 7-8).
B. Auxiliary Power
Trouble Remedy
No power output. Reset circuit breakers (see Section 6-1).
Have Factory Authorized Service Agent check brushes, slip rings, voltage regulator board PC8, intercon-
necting board PC2, and control board PC1.
Low power output. Check air cleaner, and clean or replace element if necessary.
Check engine speed, and adjust if necessary (see Section 7-7).
See engine manual.
High power output. Check engine speed, and adjust if necessary (see Section 7-7).
Erratic power output. Check receptacle wiring and connections.
Check governor according to engine manual.
Have Factory Authorized Service Agent check brushes, slip rings, voltage regulator board PC8, intercon-
necting board PC2, and control board PC1.