Enable Exhaust Filter Cleaning; Transfer Switch - Generac Power Systems MAGNUM MMG25IF4 Operating Manual

1. Open the control door and locate the switch labeled "FORCE EXHAUST REGENERATION".
2. Move and hold the switch into the

Enable Exhaust Filter Cleaning

If the environment no longer requires the function to be disabled and there are no alarms present on the DPF Status
screen, the auto exhaust filter cleaning function should be enabled. Use the following procedure to enable the auto
exhaust filter cleaning feature:
1. Enter the maintenance screens by pressing ▲, ►, ▼, or ◄.
Press and hold () to enter the Running Editor.
2.
Press ▼ to move the cursor down to the Engine section.
3.
Press () or ► to access the sections. Options should already be highlighted.
4.
Press ► and then ▼ to highlight DPF Regen Inhibit. Press () to select the check box.
5.
Press ▲ to unmark the check box.
6.
Press and hold () to save the settings. The display should return to the Home screen.
7.
Verify the Home screen no longer displays "DPF Regen Inhibit" above the kW meter and the load used
8.
gauge.

TRANSFER SWITCH

The generator neutral is bonded to ground when shipped from the factory. The bonding
plate will need to be removed when the unit is used as a standby power supply. Installation
should be in compliance with the National Electrical Code (NEC), state and local regulations.
When the unit is used as a standby power supply, it must be equipped with a transfer switch which isolates it from
the utility's distribution system. A transfer switch is designed to transfer electrical loads from the normal power source
(utility) to the emergency power source (generator) when normal voltage falls below a prescribed level. The transfer
switch automatically returns the load back to the normal source when power is restored back to operating levels.
Incoming
Utility
Power
Utility
Meter
Power From
Generator
36949 B
position.
Emergency
Distribution Panel
(Generator Power)
Main
Distribution Panel
(Utility Power)
Transfer
Switch
Figure 3-9. Transfer Switch Operation
MMG25I-35D-45I-55DF4 Operating Manual
Operation
WHITE = Incoming
Utility Power
GRAY = Normal Utility
Power Circuit
BLACK = Emergency
Generator Power Circuit
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