TROUBLESHOOTING (Continued)

 

 

 

 

 

 

 

 

 

 

 

 

TROUBLE

 

 

CAUSE

 

 

WHAT TO DO

 

 

D. Welding current too great or

 

 

1.

Exciter output low causing low

 

 

1.

Check exciter field circuit.

 

 

too small compared to

 

 

 

output compared to dial

 

 

 

 

 

 

indication on the dial.

 

 

 

indication.

 

 

 

 

 

 

 

 

 

2.

Operating speed too low or high.

 

 

2.

Adjust speed screw on governor

 

 

 

 

 

 

 

 

 

 

for 1800 RPM operating speed.

 

 

 

 

 

 

 

 

 

 

 

 

 

E. Arc continuously pops out.

 

 

1.

“Current Range Selector” switch

 

 

1.

Set the switch at the center of

 

 

 

 

 

 

may be set at an intermediate

 

 

 

the current range desired.

 

 

 

 

 

 

position.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)FLASHING THE FIELDS

AC Auxiliary Power:

1.Stop the engine welder and remove the cover from the exciter.

2.Turn the “Fine Adjustment Control” (rheostat) to “100” on the dial.

3.Using a 12 volt automotive battery, connect its negative terminal to the negative brushholder. The negative brushholder is the one nearest to the rotor lamination. See the wiring diagram. With the engine NOT running, touch the positive battery terminal to the positive brushholder. Remove the battery from the circuit.

4.Replace the exciter cover. Start the welder and the generator voltage should build up.

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Lincoln Electric 350-SA manual Flashing the Fields, AC Auxiliary Power