Diesel Exhaust Filter Monitoring - Magnum MMG75D Operating Manual

• "Password" screen: The operator may press the "" or "" buttons on the "DIAGNOSTICS" keypad to
move the cursor (>) up or down a list of text.
• "History" screen: The operator may press the "" or "" buttons on the "DIAGNOSTICS" keypad to move
the cursor (>) up or down a list of recent alarm or shutdown codes. Pressing the "Enter" button at a particular
selection will allow the operator to scroll to the right in the LCD window to view the generator operating
parameters at the time of the alarm or shutdown. The history of alarms or codes is saved in the digital
controller. The most recent alarm or code is the first to be listed, with the time/date of the alarm or code at
the bottom of the screen. The controller stores up to 117 codes. When full, the controller will automatically
remove the oldest file. These codes will not be lost when the "CONTROL ON/OFF" toggle switch is powered
off.

DIESEL EXHAUST FILTER MONITORING

This unit is equipped with a diesel exhaust filter to meet current EPA emissions standards. This section gives an
explanation of the indicators that are displayed on the "DPF Status" screen on the Magnum Digital Controller. Diesel
exhaust filter information can be found on the Liquid Crystal Display (LCD) window. To access the "DPF Status"
screen, press the "" or "" buttons on the "DIAGNOSTICS" keypad to toggle through screens until the "DPF Status"
screen appears. There are four areas on the "DPF Status" screen that communicate various information to the
operator. The areas and indicators that appear in those areas are explained here:
• "HEST Lamp" area (High Exhaust System Temperature): This area will display the "Regeneration
Underway" indicator above the words "HEST Lamp" when the unit is in the process of diesel exhaust filter
regeneration. During the regeneration process, the exhaust temperature can be very high.
• "DPF Lamp" area: This area will display the "Regeneration" indicator above the words "DPF Lamp" when
auto exhaust filter cleaning is enabled. When the unit is being operated with auto exhaust filter cleaning
disabled, this area may also display a Yellow Alarm ("Warning") or a Red Alarm ("Stop") indicator with the
"Regeneration" indicator in order to alert the operator that regeneration is needed.
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