Generac Power Systems MAGNUM MMG75D Operating Manual page 18

General Information
Engine Button
The Engine ( ) button displays the oil pressure, coolant temperature and battery voltage on three main gauges.
Below the gauges is an hour gauge displaying the total run time on the engine. At the bottom of the screen, this
screen also displays maintenance alarm status with the time remaining (black text), or the time past (red text) a
scheduled maintenance task, along with the description of the maintenance procedure and the action that will take
place when the timer trips the alarm.
Note: If the measured value is outside the range of a gauge, the needle will not be displayed. The digital value below
the gauge will still show the measured value.
• Oil Press: Displays engine oil pressure. Current coolant temperature is displayed directly below the gauge
at all times. The gauge registers oil pressure between 0-100 psi (0-689 kPa). Normal operating pressure is
between 35-80 psi (241-552 kPa).
• Coolant Temp: Displays engine coolant temperature. Current coolant temperature is displayed directly
below the gauge at all times. The gauge displays coolant temperature between 150°-250°F (66°-121°C).
Normal operating temperature of the unit is between 180°-200°F (82°-93°C) with an average ambient air
temperature of 70°F (21°C).
• Battery: Displays the engine battery voltage. Current battery voltage is displayed directly below the gauge
at all times. The gauge displays battery voltage between 0-50V. A normal reading is 12-14V on 12 volt
systems and 24-26V on 24 volt systems (with the engine running).
12
Manual Mode
100 110
106.9 kW 90
80
70
60
GEN
50
40
+ -
V
30
20
10
0
Figure 2-6. Home Button Screen
Manual Mode
40 60
20 80 170
0 100 150
GEN
50.9
PSI
Oil press.
+ -
V
0 0 3 2 5
Maintenance
Alarm Hours
1 174 To Service Oil Maintenance
2 174 To Service Fuel Maintenance
3 174 To Service Air Maintenance
Figure 2-7. Engine Button Screen
MMG75D-100D Operating Manual
Time to Empty
15 hr
3 PHASE
Volts
%
480
Amps
128
74
%
00393
190 210 20 30
230 10
250 0
214 13.8
°F V
Coolant Temp. Battery
1 5
Hrs
Description Action
Warning
Shutdown
Electrical Trip
00394
Full
3/4
1/2
1/4
Empty
40
50
33701 C