Generac Power Systems MAGNUM MMG75D Owner's Manual

Owner’s Manual for Generator 21
Operation
Exhaust Filter Cleaning Operations
When enabled, the exhaust filter system goes through an
automatic cleaning process known as regeneration.
Under normal circumstances, regeneration occurs
without interruption of unit operation and with minimal
operator involvement. In the event there are conditions
requiring the operation of the unit with the auto exhaust
filter cleaning disabled, the operator may be required to
perform procedures to enable or disable the auto exhaust
filter cleaning. The operator may also be required to
perform a manual regeneration.
NOTE: Always park the unit in a safe location for
elevated exhaust temperatures and check for adequate
fuel level before beginning the exhaust filter cleaning
process. The cleaning cycle can take an extended period
of time (approximately 45 minutes). Cleaning is complete
when the Regeneration indicator remains off.
Disabling Automatic (AUTO) Exhaust Filter
Cleaning
The auto exhaust filter cleaning feature should always be
enabled unless doing so would cause an unsafe working
environment. In the event that an unsafe working
environment would occur, use the following procedure to
disable the auto exhaust filter cleaning feature:
1. Open the control door and locate the switch
labeled “EXHAUST FILTER CLEANING.”
2. Move the switch to DISABLED (O).
3. Enter the DPF Status screen and verify the
Disabled Regeneration indicator appears above
the words “DPF Inhib - Solid.” For information
regarding the DPF Status screen and indicators,
see Diesel Exhaust Filter Monitoring.
NOTE: Disabling Auto Exhaust Filter Cleaning is not
recommended for any situation unless it is safety related
or if the fuel tank lacks the required fuel to complete the
cleaning process.
Force a Manual Exhaust Filter Cleaning
If running the unit with the exhaust filter cleaning function
disabled, the DPF Status screen may display a red alarm,
prompting the operator to force a manual exhaust filter
cleaning. Use the following procedure to force a manual
exhaust filter cleaning feature:
1. Open the control door and locate the switch
labeled “EXHAUST FILTER CLEANING.”
2. Move and hold the switch in ON/FORCED (I) for
five seconds.
3. Enter the DPF Status screen and verify the
Regeneration indicator appears above the words
“DPF Lamp - Solid.” For information regarding the
DPF Status screen and indicators, see Diesel
Exhaust Filter Monitoring.
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. Open the control door and locate the switch
labeled “EXHAUST FILTER CLEANING.”
2. Move the switch to ON/AUTO (I/O).
3. Enter the DPF Status screen and verify the
Regeneration indicator appears above the words
“DPF Lamp - Solid.” For information regarding the
DPF Status screen and indicators, see Diesel
Exhaust Filter Monitoring.
AUTO Exercise Timer
The Power Zone™ controller is capable of starting and
stopping the unit automatically, based on a
programmable schedule.
Units installed in a standby application should be
exercised regularly to maintain operating condition and to
ensure responsiveness in an emergency situation. Use
the following procedures to operate the unit in AUTO
mode:
Accessing the Configuration Menu
1. With the unit stopped, press ▲, ►, ▼, or ◄ to
navigate to the maintenance screens from any of
the operator screens.
2. While on any maintenance screen, press  and O
simultaneously. The controller will display the
Configuration menu.
3. To save any changes and exit the Configuration
menu, press and hold  for five seconds. To cancel
any changes and return to the maintenance
screen, press and hold O for five seconds.
WARNING
Risk of Burn. Stay clear of the exhaust system
during operation and exhaust filter cleaning.
Exposure to hot exhaust gases and components
could result in serious injury.
(000304)
WARNING
Hazardous Material. Only an authorized engine
service dealer should remove, handle and dispose
of Diesel Particulate Filter (DPF) ash. Failure to
dispose of DPF ash properly could result
in serious injury and environmental damage.
(000307)

Generac Power Systems MAGNUM MMG75D Specifications

General

Brand	Generac Power Systems
Model	MAGNUM MMG75D
Category	Portable Generator
Language	English