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Generac 20kW — 19

For the Generac 20kW.

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Procedure

  1. 3.3.3 LOAD TRANSFER The transfer of load when the generator is running is dependent upon the operating mode as follows:
  2. 1. Manual Will not transfer to generator if utility is present. • Will transfer to generator if utility fails (below 65% of nominal • for 10 consecutive seconds. Will transfer back when utility returns for 15 consecutive • seconds. The engine will continue to run until removed from the Manual mode.
  3. 2. Auto Will start and run if Utility fails for 10 consecutive seconds. • Will start a five (5) second engine warm-up timer. • Will not transfer if utility subsequently returns. • Will transfer to generator if utility is still not present. • Will transfer back to utility once utility returns (above 75% of • nominal) for 15 seconds. Will transfer back to utility if the generator is shut down for • any reason (such as the switch is in the OFF position or a shutdown alarm. After transfer, will shut down engine after one (1) minute • cool-down time.
  4. 3. Exercise Will not exercise if generator is already running in either Auto • or Manual mode. During exercise, the controller will only transfer if utility fails • during exercise for 10 seconds, and will switch to Auto mode.
  5. 3.3.4 UTILITY RESTORED Initial Condition: Generator supplying power to customer load. When the utility returns (above 80% of nominal), a 15 second return to utility timer will start. At the completion of this timer, if the utility supply is still present and acceptable, the control will transfer the load back to the utility and run the engine through a one (1) minute cool down period and then shut down. If utility fails for three (3) seconds during this cool down period, the control will transfer load back to the generator and continue to run while monitoring for utility to return.
  6. 3.4 MANUAL TRANSFER OPERATION
  7. 3.4.1 TRANSFER TO GENERATOR POWER SOURCE To start the generator and activate the transfer switch manually, proceed as follows:
  8. 1. Set the generator’s AUTO/OFF/MANUAL switch to OFF.
  9. 2. Set the generator’s main circuit breaker to its OFF (or OPEN) position.
  10. 3. Turn OFF the utility power supply to the transfer switch using the means provided (such as a utility main line circuit breaker).  Do

Source: manual:9f84685f-0bec-42e0-a4e9-5c2c50b4b67b.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.