Disabling Automatic (Auto) Exhaust After-Treatment Cleaning (If Equipped); Force A Manual Exhaust After-Treatment Cleaning; Enable Exhaust After-Treatment Cleaning; Transfer Switch - Generac Mobile MMG35DF4 Owner's Manual

extended period of time (approximately 45 minutes).
Cleaning is complete when the regeneration indicator
remains off.
Disabling Automatic (AUTO) Exhaust After-
Treatment Cleaning (If Equipped)
The auto exhaust after-treatment cleaning feature should
always be enabled unless doing so would cause an
unsafe working environment. In the event that an unsafe
working environment occurs, proceed as follows to
disable the auto exhaust after-treatment cleaning feature:
1. Locate the REGEN INHIBIT on the outside of the
control panel under the display.
2. Set the switch to DISABLED (O).
3. Enter the SCR status screen and verify the
disabled regeneration indicator appears above the
words SCR INHIB - SOLID. See
Catalytic Reduction (SCR)
IMPORTANT NOTE: Disabling auto exhaust after-
treatment cleaning is not recommended for any situa-
tion unless it is safety related or if the fuel tank lacks
the required fuel to complete the cleaning process.
NOTE: If the soot level exceeds 100% contact Generac
Mobile Technical Service at 1-800-926-9768 or
www.generacmobileproducts.com.
Force a Manual Exhaust After-
Treatment Cleaning
If running the unit with the exhaust after-treatment
cleaning function disabled, the SCR status screen may
display a red alarm, prompting the operator to force a
manual exhaust after-treatment cleaning. Proceed as
follows to force a manual exhaust after-treatment
cleaning:
1. Locate the REGEN INHIBIT on the outside of the
control panel under the display.
2. Set and hold the switch in ON/FORCED (I) for five
seconds.
3. Enter the SCR status screen and verify the
regeneration indicator appears above the words
SCR LAMP - SOLID. See
Reduction (SCR)

Enable Exhaust After-Treatment Cleaning

If the environment no longer requires the exhaust after-
treatment cleaning function to be disabled, and there are
no alarms present on the SCR status screen, the auto
exhaust after-treatment cleaning function should be
enabled. Proceed as follows to enable the auto exhaust
after-treatment cleaning feature:
1. Locate the REGEN INHIBIT on the outside of the
control panel under the display.
2. Set the switch to ON/AUTO (I/O).
Owner's Manual for Mobile Generator
Selective
Monitoring.
Selective Catalytic
Monitoring.
3. Enter the SCR status screen and verify the re-
generation indicator appears above the words SCR
LAMP - SOLID.
Reduction (SCR)

Transfer Switch

DANGER
Loss of life. Property damage. Installation must
always comply with applicable codes, standards, laws
and regulations. Failure to do so will result in death
or serious injury.
DANGER
Electrical backfeed. Use only approved switchgear to
isolate generator from the normal power source.
Failure to do so will result in death, serious injury,
and equipment damage.
WARNING
Electric shock. Only a trained and licensed electrician
should perform wiring and connections to unit. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
WARNING
Electric shock. Phase rotation must be compatible.
Incompatible phase rotation could result in death,
serious injury, or equipment damage.
The installation should be in compliance with the National
Electrical Code (NEC), state, and local regulations.
Before any connections are attempted, verify the main
circuit breaker and the control power switch are in the
OFF (O) position and that the negative (-) battery cable
has been disconnected from the battery.
Installation of such devices must be performed by
following all directions supplied by the manufacturer of
the switch. If attaching the unit to a power supply
normally serviced by a utility company, notify the utility
company and check state and local regulations.
Familiarize yourself with all instructions and warning
labels supplied with the switch.
When the unit is used as a standby power supply, it must
be equipped with a transfer switch that 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.
Operation
See Selective Catalytic
Monitoring.
(000190)
(000237)
(000155a)
(000226b)
31