Speedaire SDR8CG00 Manuel D'utilisation Et De Pièces page 19

WELDER GUIDELINES (CONTINUED)
Testing Welder/Generator Diodes
1. Use an Ohmmeter to check each individual diode. Diodes must show
continuity in one direction only.
2. This check can also be done using a 12 Volt battery and a light bulb as
shown in Figure 11.
3. If the diodes are operating properly, the lamp illuminates brightly when
the battery polarity is correct, and goes dim when battery polarity is
reversed.
4. If there is no change in lamp brightness when polarity is reversed, the
diodes must be replaced.
Lamp Off
Figure 11 - Diode Test Procedure
For testing of rotor, stator, or field windings,
consult an authorized service center.
Lamp On
Figure 12 - Multiple Weld Passes
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