Magnum MMG 230, Operating Manual

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RESETTING OF THE “TIME TO SERVICE” REMINDER
The Magnum Digital Controller (MDC) will display the message “ WrnServiceTime” when the unit is due for
maintenance or service. The maintenance or service interval is set at 250 hours of engine running time. Once the
unit has been serviced, the “ServiceTime” reminder needs to be reset to the 250 hour interval. The following
procedure demonstrates how to reset the running hours to 250:
1. With the unit shut down, power up the controller with the “Control On/Off” Toggle Switch. The initialization
screen will be displayed. The controller will toggle automatically to the “Ready” Display screen.
2. Press the “
S
” button. The “Alarm List” display screen will appear. The next screen will display lines of
text; starting with the word “Password”, then “Basic Settings”, “Engine Params”, “Engine Protect” etc. The
top line has a “> “ cursor before the word ‘Password”.
3. Press the “
T
” button to move the “> “cursor down to the “Engine Protect” line of text.
4. Press Enter. “NextServTime” will appear at the top of the display screen on the left side, with the current
service time hour setting (250) one line below on the right side
5. Press Enter. The current run time in hours will now appear on the left side of the display screen, directly
under “NextServTime”
6. Press the “
S
” button and reset the current run time hour setting to 250. If you overshoot the 250 time
interval use the “
T
” button to get back to the 250 time interval.
7. Press “Enter” to save the current run time hour setting.
8. Move the “CONTROL ON / I” toggle switch to the “CONTROL OFF / O” position.
TROUBLESHOOTING AUTOMATIC SHUTDOWN CONDITIONS
LOW FUEL LEVEL SHUTDOWN
1. Check the fuel level on the Liquid Crystal Display (LCD) window.
2. Check for leaks in the fuel tank. The fuel tank should not run dry under normal circumstances. The engine
controller will shut the engine down when there is 5% of fuel remaining in the tank. This is done to keep
the fuel lines from running dry.
3. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for
damage. To check for continuity between the sender and the engine controller, remove the bolts from the
control panel and open the panel like a door. Consult the appropriate DC wiring diagram in this manual for
the proper path between the engine controller and the fuel level sender.
LOW OIL PRESSURE SHUTDOWN
1. Check the level of the engine oil with the dipstick. The engine controller will shut the engine down when
the oil pressure is less than 20 psi. Add oil if required.
2. Visually inspect the engine for oil leaks.
3. If the oil level is good, restart the unit and verify the loss of oil pressure. Shut the engine down immedi-
ately if the oil pressure value does not read 5 PSI within five (5) seconds.
4. Check the oil pressure sender on the engine block and the connecting wiring for damage. To check for
continuity between the sender and the engine controller, remove the bolts from the control panel and open
the panel like a door. Consult the appropriate DC wiring diagram in this manual for the proper path
between the engine controller and the pressure sender.
5. If the oil level, pressure sender and wiring are good, the oil loss may be caused by engine failure. Consult
the ENGINE OPERATION AND MAINTENANCE MANUAL for additional information on excessive oil
consumption.
LOW COOLANT LEVEL SHUTDOWN
1. Allow the engine to cool.
2. Check the coolant level in the radiator. To access the radiator cap, you must remove the access panel
from the top of the enclosure directly above the radiator. Add coolant until it is 3/4” below the filler neck.
Secure the radiator cap back into its original position.
3. Inspect coolant hoses, engine block and water pump for visible leaks.