22
•
“DPF Inhib” area:
This area will display the “Disabled Regeneration” indicator above the words “DPF Inhib”
when auto exhaust filter cleaning is disabled.
•
“Alarm” area:
This area will display the “Yellow Alarm” or “Red Alarm” indicator above the words “Alarm”
when an alarm condition occurs. The “Alarm” area displays different text depending upon which alarm
condition occurs. The “Alarm” will read “Yel Alarm” if a yellow alarm condition occurs and “Red Alarm” if a
red alarm condition occurs.
For information on operation of auto exhaust filter regeneration and service regeneration, refer to
“Exhaust Filter
Cleaning Operations” on page 28
.
WET STACKING
The generator is powered by a diesel engine. Diesel engines are susceptible to wet stacking if lightly loaded. Wet
stacking occurs when an engine is run at less than 30% of its full load capacity, causing unburned fuel to accumulate
in the exhaust system. Wet stacking can be detected by continuous black exhaust when the unit is under a constant
load. It can also cause fouling of injectors and buildup on engine valves. Diesel engines operate properly when
applied loads are between 30% and 100% capacity. Appropriate generator sizing is determined by the anticipated
load. If the unit is in a wet stack condition, load the unit heavily for five hours or until the exhaust is clear.
FINE VOLTAGE ADJUSTMENT
Upon start-up of the generator, the “Running” screen of the Magnum Digital
Controller (MDC) will display “V Detect” and will count down from 45 seconds
to zero. This is a safety feature of the controller to protect the generator from
over or under voltage upon start-up.
“V Detect” is a 45 second time delay and count down process before the MDC
records the generator nominal output voltage. This nominal generator voltage
is then compared to the current set point voltage of the voltage selector switch.
If the nominal voltage recorded by the controller is greater than or lower than
the current set point voltage of the voltage selector switch setting by 10% or
more, the controller will shut the generator down automatically. The display will
read: Wrn VG1 or 2 or 3 Under/Over and/or Sd Vg1 or 2 or 3 Under/Over. This
means the controller warned (“WRN”) or shut down (“SD”) the unit due to an
output voltage irregularity.
The output voltage of the generator may be adjusted after the generator is running by using the fine voltage adjustment
screw. The adjustment screw is located directly below the “CONTROL ON/OFF” toggle switch on the control panel.
This screw turns a rheostat that will provide an increase (“+”) or a decrease (“-”) in the generator output voltage as
displayed on the Generator Display Screen on the Magnum Digital Controller (MDC). If the voltage is increased or
decreased too fast or too slow, the unit will automatically shut down. This adjustment needs to be made within the
45 second delay and countdown to zero period.
CONTROL
ON
CONTROL
OFF
Voltage
Adjustment
Screw
