Section III. OPERATOR MAINTENANCE
c. Raise the excitation brush from the commutator
The instructions in this section are published for the
information and guidance of the operator to maintain the
d. Connect the negative terminal of a 6- to 12-volt
battery to the excitation brush stud.
39. Correcting Polarity
e. Touch the positive terminal of the battery to the
The welding generator terminals have been marked
bottom main brush stud for approximately 2 seconds.
for straight polarity (electrode terminal negative). If the
Lower the excitation brush and replace the
polarity should become reversed, it may be corrected
generator end cover. The polarity will be correct when
after the motor has stopped.
the welding machine is next used.
g. Remove the cause of reversal in polarity.
a. Adjust the current selector for maximum current with
electrode selector on any setting.