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TROUBLESHOOTING AND REPAIR |
MAIN TRANSFORMER VOLTAGE TEST (continued)
FIGURE F.9 – TRANSFORMER SECONDARIES
A |
A |
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SECONDARY LEADS | COMMON BUSS | ||
(6 PLACES) | |||
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PROCEDURE |
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9. Test with an AC voltmeter for approximately 55 VAC | NOTE: All of the secondary voltages will vary if the | ||
from each of the six main transformer secondary | input line voltages vary. If any one or more of the volt- | ||
leads to the common bus connected to the output | age checks are incorrect, check for loose or faulty con- | ||
choke. See Figure F.9. |
| nections. See the Wiring Diagram. If the leads and | |
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| connections are OK, the main transformer may be | |
faulty.
FIGURE F.10 – AUXILIARY VOLTAGES
| 5 | 6 |
| 4 |
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RECEPTACLE |
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2 |
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| 1 | 10 |
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TS 2 |
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21+ 21- 41 4 2 | 31 32 |
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PROCEDURE
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10.Test for 120 VAC between leads #31 and #32 on terminal strip
12.Test for 42 VAC between leads #41 and #2 on the terminal strip. See Figure F.10. If the correct volt- age is not present, make sure the 10 amp circuit breaker is not tripped or faulty. Also check the wiring between the main transformer, the terminal strip, and the circuit breaker. See the Wiring Diagram.
