Engine Monitoring - Generac Power Systems MAGNUM MLT4250 Owner's Manual

Operation
NOTE: When loading the generator, it is important to
observe the amperage to determine the load balance on
each line of the generator. Minor load unbalances,
usually 10% or less, will not cause any particular
problems. Every effort should be made to distribute the
load equally between all lines.
•
Hertz: Displays output frequency.
• Generator Output Voltage: Line to Neutral
display, single phase (1Ø).
• Generator Output Voltage: Line to Line display, 3
phase (3Ø).
•
Amps: Displays
produced by the generator
Figure 3-4. Generator Screen

Engine Monitoring

Engine information is shown in a toggling manner with
the generator information after the first 60 seconds of
operation and then every five seconds. The engine
screen will show oil
temperature, and battery voltage.
• Oil Press: Displays engine oil pressure. The
display registers oil pressure between 0-100 psi (0-
689 kPa). Normal operating pressure is between
35-80 psi (241-552 kPa).
• Engine Temp: Displays the temperature of the
engine's coolant. If the coolant temperature
exceeds the maximum water temperature of 230°F
(110°C) the engine will automatically shut down.
Zero "0" will be displayed until a minimum
temperature of 100°F (38°C) is reached.
•
Vbat: Displays the engine battery voltage. A
normal reading is 13-14V on 12 volt systems and
24-26V on 24 volt systems (with the engine
running).
Figure 3-5. Engine Screen
16
the AC output amperage
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pressure, engine coolant
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Additional information may be viewed while the unit is in
Manual or Auto mode. By pressing the Page Select
button, the operator will select one of the following
screens: Running, Password, or History. In each of these
page selections the operator may press the  or 
buttons on the Diagnostics keypad to display additional
information as follows:
• See Figure 3-6. Running screen: Press the  or
 buttons on the Diagnostics keypad to display the
Alarm List screen, Run Hours screen, engine
display screen and generator screen.
Figure 3-6. Running Screen
• 3-7. Password screen: Press the 
See Figure
or  buttons on the Diagnostics keypad to move
the (>) cursor up or down a list of text.
Figure 3-7. Password Screen
• See Figure 3-8. History screen: Press the  or
 buttons to move the (>) cursor up or down a list
of recent alarm or shutdown codes. Pres Enter at a
particular selection to scroll to the right in the LCD
window to view the unit's operating parameters at
the time of the alarm or shutdown. The history of
alarms or codes is saved in the digital controller.
Owner's Manual for MLT Light Tower
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004527