Generac Power Systems 10 kW LP manual Operating instructions Part, To Select Automatic Operation

Section 1.7

Operating instructions

Part 1

General information

10-20 KW – INSTALLATION ASSISTANT:

Upon first power up of the generator, the display inter- face will begin an installation assistant. The assistant will prompt the user to set the minimum settings to operate. These settings are simply: Current Date/Time and Exercise Day/Time. The maintenance intervals will be initialized when the exercise time is entered for the first time (Figure 3.2).

The exercise settings can be changed at any time via the "EDIT" menu (see Appendix, "Menu System").

If the 12 Volt battery is disconnected or the fuse removed, the Installation Assistant will operate upon power restoration. The only difference is the display will only prompt the customer for the current Time and Date.

If the installer tests the generator prior to instal- lation, press the “ENTER” key to avoid setting up the exercise time. This will ensure that when the customer powers up the unit, he will still be prompted to enter an exercise time.

NOTE: The exerciser will only work in the AUTO mode and will not work unless this procedure is performed. The current date/time will need to be reset every time the 12 Volt battery is disconnected and then recon- nected, and/or when the fuse is removed.

To Select Automatic Operation

The following procedure applies only to those instal- lations in which the air-cooled, automatic standby generator is installed in conjunction with a transfer switch. Transfer switches do not have an intelligence circuit of their own. Automatic operation on transfer switch and generator combinations is controlled by circuit board action.

To select automatic operation when a transfer switch is installed along with a home standby generator, proceed as follows:

1.Check that the transfer switch main contacts are at their UTILITY position, i.e., the load is connected to the power supply. If necessary, manually actuate the switch main contacts to their UTILITY source side. See Part 3 of this manual, as appropriate, for instructions.

2.Check that utility source voltage is available to transfer switch terminal lugs N1 and N2 (2-pole, 1-phase transfer switches).

3.Set the generator AUTO-OFF-MANUAL switch to its AUTO position.

4.Actuate the generator main line circuit breaker to its “On” or “Closed” position. With the preceding Steps 1 through 4 completed, a dropout in utility supply voltage below a preset level will result in automatic generator cranking and start-up. Following startup, the transfer switch will be actuated to its “Standby” source side, i.e., loads powered by the standby generator.

Manual Transfer To “Standby” and

Manual Startup

To transfer electrical loads to the “Standby” (generator) source and start the generator manually, proceed as follows:

1.On the generator panel, set the AUTO-OFF-MANUAL switch to OFF.

2.On the generator, set the main line circuit breaker to it’s OFF or “Open” position.

3.Turn OFF the power supply to the transfer switch, using whatever means provided (such as a utility source line circuit breaker).

4.Manually actuate the transfer switch main contacts to their “Standby” position, i.e., loads connected to the “Standby” power source side.

NOTE: For instructions on manual operation of transfer switches, see Part 3.

5.On the generator panel, set the AUTO-OFF-MANUAL switch to MANUAL. The engine should crank and start.

6.Let the engine warm up and stabilize for a minute or two at no-load.

7.Set the generator main line circuit breaker to its “On” or “Closed” position. The generator now powers the electrical loads.

Manual Shutdown And Retransfer

Back To “Utility”

To shut the generator down and retransfer electrical loads back to the UTILITY position, proceed as follows:

1.Set the generator main line circuit breaker to its OFF or “Open” position.

2.Let the generator run at no-load for a few minutes, to cool.

3.Set the generator AUTO-OFF-MANUAL switch to OFF. Wait for the engine to come to a complete stop.

4.Turn off the utility power supply to the transfer switch using whatever means provided (such as a utility source main line circuit breaker)

5.Manually actuate the transfer switch to its UTILITY source side, i.e., load connected to the utility source.

6.Turn on the utility power supply to the transfer switch, using whatever means provided.

7.Set the generator AUTO-OFF-MANUAL switch to AUTO.

Page 28