Set The Unit To Auto Mode; Shutting Down The Unit - Generac Power Systems MAGNUM MMG75D Operating Manual

1. Access the Scheduler group by pressing the ► button.
Note: The Scheduler group is made up of the Scheduler Options and Scheduler Setup sections. Each section can
be accessed and exited using the ► and ◄ buttons.
Access the Scheduler Options section. Within this section, the scheduler can be enabled, run mode
2.
selected, and load mode selected.
Access the Scheduler Setup section. Within this section, each schedule entry can be modified by pressing
3.
the  button to select the item and the ▲ and ▼ buttons to define them.
Note: If setting up a daily scheduled run, select Weekly run mode, then set Start Time and Duration for each day
(seven schedule entries total). This will repeat the seven day schedule as long as the unit is in Auto mode.

Set the Unit to Auto Mode

1. From any operator or maintenance screen, press and hold the Auto/Manual Mode ( ) button for five seconds,
or until Auto mode is displayed at the top of the screen.
Note: If any of the scheduled time slots are currently active, the controller will begin the starting sequence and start
the unit, provided there are no shutdown conditions present.

SHUTTING DOWN THE UNIT

Prior to shutting down the unit, check with personnel using power supplied by the generator and let them know that
the power is going to be turned off. Verify the power shut down will not create any hazards by accidentally turning
off equipment that needs to be kept on (pumps, compressors, lights, etc.).
1. Remove all loads from the generator by opening all circuit breakers (turn OFF (O)).
Let the engine run for approximately five minutes to allow it to cool down.
2.
Press the red Engine Stop/Reset (O) button on the controller. This will result in the generator going into the
3.
shutdown cycle and starting a 15 second shutdown timer called stopping. If the unit does not shut down
within 15 seconds, a stop fail alarm will be displayed on the LCD window.
33701 C
Table 2: Scheduler Options
Item
Enable Yes/No
Run Mode Monthly/Weekly
Load Idle, In Island, On Load, Off Load
Table 3: Scheduler Setup
Item
Schedule Entry 1-16
Start Time 00:00-23:59
Duration 00:00-99:59
Day Monday-Sunday
Week (of month) First, Second, Third, Fourth
MMG75D-100D Operating Manual
Values
Values
Operation
33