Engine Break-In Requirements; Resetting The Maintenance Alarms; Exhaust Filter Service Requirements - Generac Power Systems Magnum MMG75D Owner's Manual

Engine Break-In Requirements

NOTE: During the first 20 hours of operation, avoid long
periods of no load or sustained maximum load operation.
If the generator is to run for longer than five minutes
without a load, shut the generator down.
John Deere engines are supplied with engine break-in oil
from the factory. Extra care during the first 100 hours of
engine operation will result in better performance and
longer engine life. Do not exceed 100 hours of operation
with the break-in oil. Operate the engine at heavy loads
(60-90% of maximum) as much as possible. If the engine
has spent significant time at idle, constant speed(s), and/
or light load, or if makeup oil is required, a longer break in
period may be needed. See the engine operator's
manual for a full description of necessary procedures on
the addition of break-in oil and extension of the break-in
period.

Resetting the Maintenance Alarms

The Power Zone™ controller will display a warning
message when the unit is due for maintenance or
service. The maintenance or service interval is set at
250, 500 and 3000 hours of engine running time. Once
the unit has been serviced, the appropriate maintenance
alarm reminder needs to be reset. The following
procedure demonstrates how to reset the maintenance
alarms:
With the unit shut down, move the Control Power
1.
switch to "CONTROL ON (/I)". After initialization,
the controller will toggle automatically to the Home
screen.
Press ▲, ►, ▼, or ◄ to enter the maintenance
2.
screens.
Press  and O simultaneously. The next screen
3.
will display the Configuration menu.
Press  to move the cursor (blue highlighted text)
4.
down to the Maintenance group.
Press ► to access the sections. Press  to
5.
highlight the Maintenance section.
Press ► to access the parameters and highlight
6.
the maintenance alarm that needs to be reset.
Press  to select the editable parameters. The
7.
cursor will highlight "Not Reset" under the selected
maintenance alarm. Press  to highlight "Reset".
Press  to reset the selected maintenance alarm.
8.
To perform additional maintenance alarm resets,
9.
repeat steps 6 - 8.
NOTE: If the selected maintenance alarm does not need
to be reset, press  to highlight "Not Reset" and press 
to return to the parameters section.
To save changes, press and hold  for five
10.
seconds. To discard changes made, press and
hold O for five seconds.
Owner's Manual for Generator

Exhaust Filter Service Requirements

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.
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.
The exhaust filter system contains a Diesel Particulate
Filter (DPF). Over time, the DPF will require professional
servicing to remove ash buildup. The expected service
interval will be at least 3,000 or 4,500 hours, based on
engine power and operating conditions. Actual service
should take place when the indicator light appears on the
Power Zone™ controller. The DPF should be cleaned or
replaced by an OEM authorized engine service dealer
only. The removal of DPF ash must be done by removing
the DPF from the unit and placing it into specialized
equipment.
To avoid unnecessary buildup of diesel particulates or
soot in the exhaust filter system:
Utilize the Automatic Exhaust Filter Cleaning
1.
mode.
Avoid unnecessary idling.
2.
Use proper engine oil. See the engine operator's
3.
manual.
Use only ultra low sulfur diesel fuel. See the engine
4.
operator's manual.
Maintenance
(000304)
(000307)
27