Section 3 — Operation
Guardian
RETRANSFER AND SHUTDOWN
When utility power source voltage has been restored, electrical loads may be transferred back to that source and the generator can be shut down as follows:
•Verify that utility power supply voltage to the transfer switch has been positively turned “Off,” using what- ever means provided (such as utility main line circuit breaker).
•Set the generator’s main circuit breaker to its “Off” or “Open” position.
•Let the generator engine run at
•On the generator console, set the
•For transfer to utility position, refer to the Owner’s Manual of your particular transfer switch.
•Turn on the utility power supply to the transfer switch, using whatever means provided (such as a utility main line circuit breaker). The utility power source now powers the loads.
every 7 days thereafter, on day and time of day the switch was actuated.
•Place a sign on the generator control panel and the transfer switch, indicating the day and time the gen- erator will be exercising.
NOTE:
If battery terminals are disconnected or control panel fuse is removed, the exercise timer needs to be reset for correct automatic exercise operation.
Figure 9 - “Set Exercise” Switch
AUTOMATIC OPERATION
To set the system for fully automatic operation, proceed as follows:
•Check that load circuits are connected to the utility power supply.
•Set the Auto/Off/Manual switch to its “Auto” position.
•Set the generator main circuit breaker to its “On” or “Closed” position.
WEEKLY EXERCISE CYCLE
The generator will start and exercise once every 7 days. During this weekly exercise, the unit runs for about 20 minutes and shuts down. Transfer of loads to genera- tor output does not occur during the exercise.
To select day and time for exercising, proceed as fol- lows:
•Set the Auto/Off/Manual switch to OFF.
•Set generator main circuit breaker to OFF or OPEN.
•Locate the rocker switch on the control panel identi- fied with the words “Set Exercise Time” (Figure 9).
•Push “Set Exercise Time” switch to ON position for 20 to 30 seconds and then release. Switch will spring back into its original position when released.
•Wait 30 seconds before setting the Auto/Off/Manual switch to “AUTO” position.
CAUTION: If you switch the Auto/Off/Manual switch too soon, the engine may start. If engine does start, it will shut down automatically in about two (2) minutes.
•Set the generator main circuit breaker to its ON or CLOSED position.
•Generator is now programmed to start and exercise
14 Generac® Power Systems, Inc.
ENGINE HEATER
Your Generac standby generator comes equipped with a block heater (Figure 10), similar to the block heaters used in automotive applications.
Figure 10 - Engine Block Heater
Refer to applicable wiring diagram(s) and electrical schematic(s) at back of manual for wiring connections.
