MMD Equipment IGR1000 - Manual (Page 14)

MMD PowerPro Inverter Generators • IGR1000P • IGR2000P • IGR2600HP (041715) MMD PowerPro Inverter Generators • IGR1000P • IGR2000P • IGR2600HP (041715) Page 26 Page 27
Smart-Throttle System
When the Smart-throttle switch is placed in the ON position, engine speed is kept at
idle automatically when the electrical load is disconnected. It returns to the proper
speed to match the power of the electrical load when the load is reconnected. This
position is recommended to minimize fuel consumption while in operation.
n The Smart-throttle system does not operate efficiently if the electrical appliance
will be used in a rapid on-off or low-to-high rpm mode.
n When high electrical loads are connected simultaneously, turn the Smart-throttle
switch to the OFF position to reduce voltage fluctuation or shutdown.
n In DC operation, turn the Smart throttle switch to the OFF position. When the
Smart-throttle is in the off position, the engine runs at rated load RPM.
SMART-
THROTTLE
SWITCH
ON OFF
High altitude operation
At high altitude, the standard carburetor air-fuel mixture will be excessively rich.
Performance will decrease, and fuel consumption will increase.
High altitude performance can be improved by installing a smaller diameter main
fuel jet in the carburetor. If you always operate the generator at altitudes higher than
5000 feet (1500 meters) above sea level, have your authorized dealer install a high
altitude main jet.
Even with suitable carburetor jetting, engine horsepower will decrease approximately
3.5% for each 1000 feet or 305 meter increase in altitude. The effect of altitude on
the horsepower will be greater than this if no carburetor modification is made.
n Operation of the generator at an altitude lower than the carburetor is jetted for
may result in reduced performance, overheating, and serious engine damage
caused by an excessively lean air/fuel mixture. Be sure to have any modification
reversed at lower altitudes.
Temperature
High temperature adversely affects generator operation. Generator performance will
decrease 1% for each 10°F (5.5°C) increase in temperature above 85°F (29°C).
The normal operating range of this generator is -20° to 113° F (-29° to 45°C)
n Do not operate the generator when the ambient temperature is below -20°F
(-29°C).
n Do not operate the generator when the ambient temperature exceeds 113°F
(45°C).