Test And Adjustment Of Transformer-Rectifiers; Additional Tests For Dual Output Units - Hobart 6921 Series Operation And Maintenance Manual

OM-2040 / Operation and Maintenance Manual
90D20 / Generator Sets
c. Hold one ohmmeter lead point on the threaded end of the diode. Hold the other lead point on
the wire terminal end. Observe and note the indicated resistance. Now reverse the lead
connections on the diode. Again observe and note the ohmmeter indicated resistance. If an
infinite or very high resistance is indicated with the leads connected one way and a low,
readable resistance was indicated with the leads connected the opposite way, the diode may
be considered good.

6. Test and Adjustment of Transformer-Rectifiers

If this generator set specificication is equipped with a transformer-rectifier option, refer to the appropriate
transformer-rectifier manual included in Chapter 6 of this manual for T-R test and adjustment
procedures.

7. Additional Tests for Dual Output Units

Perform the tests outlined in para. 2, B, (16) through (22) substituting the controls and indicators
illustrated in Figures 10 and 11.
Chapter 2-3
Page 16
Output No. 2 Power
Module Panel
Figure 10
February 28/94 Revised