Generac Power Systems Magnum MGG100M, Operator'S Manual

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Operation
36833 C MGG100M Operating Manual 35
Operation Inspection
The inspection below is recommended each time the unit starts.
Note: To stop the engine, turn key switch to OFF.

Inspect fuel lines and connections for gas leaks—check inside unit and check pipes connecting fuel
sources to unit. Repair any leaks and breaks.
 Verify fuel supply pressure is correct.
 Verify there are no coolant or oil leaks. If a leak is detected, immediately stop the engine and repair the
leak before proceeding.
 Verify operation is smooth. If you observe squealing belts, harsh vibrations, or other abnormal
behavior; immediately stop the engine and repair before proceeding.
 Verify correct output voltage exists (line-to-line and line-to-neutral) at the genset.
 Verify phase rotation is the same as the attached equipment.
 Adjust output voltage in GenLink.
 After completing the operation checks, stop the engine and wait for the engine to cool. When the
engine is cool, check engine oil and coolant levels.
WARNING
Risk of burns. Do not open coolant system until engine has completely cooled. Doing
so could result in serious injury. (000154)

When unit reaches operation speed, verify the voltage setting is correct and adjust if necessary.
WARNING
Do not connect or disconnect a fuel source while the engine is running.
Shutting Down Unit
CAUTION
Equipment Damage. The emergency stop switch is not to be used to power-down the unit
under normal operating circumstances. Doing so will result in equipment damage. (000246)
Normal Shut-Down
1. Verify power to connected loads can be interrupted. Warn equipment users of the pending power disruption.
Depending on unit application, other actions may be required before shutting down the unit.
2. Switch the MLCB to OFF (O). Power to connected loads is stopped.
3. Allow unit to run for approximately five minutes. That allows the engine to cool, preventing damage to critical
engine components.
4. On control panel, turn key switch to OFF.
Note: Depending on unit application, safety tag-outs or lock-outs may also be required.
5. Turn battery disconnect switch to OFF.
Emergency Shut-Down
CAUTION
Equipment Damage. The emergency stop switch is not to be used to power-down the unit
under normal operating circumstances. Doing so will result in equipment damage. (000246)
Push the EMERGENCY STOP switch to immediately shut down the unit and stop power to all electrical loads. Doing
so results in an EMERGENCY STOP shutdown alarm. For more information, see
General Information .