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General Information
NOTE: This manual assumes that the generator set has been properly selected, installed and interconnected
by a competent, qualified electrician or installation contractor. Once the installation is complete, do nothing
that may result in non-compatibility between the generator and connected electrical loads.
2.2.3— Single-Phase "A" or "M" Code Units
The following statement applies to single-phase units with an "A" or "M" code alternator:
The generator is suitable for supplying typical residential loads, such as induction motors (sump pumps, refrigerators,
air conditioners, furnaces, etc.), electronic components (TV, computer, monitor, etc.), lighting loads, and microwaves.
2.2.4— Three-Phase Load Imbalance Limits
For three-phase units the maximum load imbalance between phases can not exceed 25% of rated load (current).
2.2.5— Ambient Condition Derate
The maximum ambient temperature for the generator is indicated on the unit data label. Derate values for ambient tem-
perature in excess of that indicated on the data label, as well as altitude, may apply depending on the engine and kW
rating of the unit. Consult an Authorized Service Dealer for any derate values applicable to this specific generator at its
installed location.
2.3 — Engine/Generator Protective Devices
The generator set may be required to operate for long periods of time without an operator on hand to monitor condi-
tions such as coolant temperature, oil pressure, voltage, frequency, etc. For this reason, the generator set has numer-
ous sensors to provide the control panel with the information it needs to protect both the engine and generator. The
control panel is designed to shut down the engine if potentially damaging conditions occur. These conditions can
include low oil pressure, high coolant temperature, low coolant level, engine overspeed, over or under voltage, over or
under frequency, etc. These settings are configured at the factory and can be changed/adjusted by an Authorized Ser-
vice Technician if required.
NOTE: Engine/generator protective devices are only mentioned here for the owner/operator's general informa-
tion. For details, consult the applicable control panel technical manual. The list below is not all inclusive.
2.3.1— Coolant Temperature Sensor
The control panel automatically shuts down the engine if the engine coolant temperature rises above a safe level.
2.3.2— Low Coolant Level Sensor
Should the engine coolant level drop below the level of the low coolant temperature sensor, it is possible for the engine
to overheat without automatic shutdown. To prevent such overheating, the engine has a low coolant level sensor. If the
level of engine coolant drops below the level of the low coolant level sensor, the control panel will shut the engine
down.
2.3.3— Oil Pressure Sensor
This sensor monitors engine oil pressure. If oil pressure drops below a safe level, the control system automatically
shuts down the engine.
2.3.4— Overspeed Shutdown
A speed circuit controls engine cranking, startup, operation, and shutdown. Engine speed signals are delivered to the
control panel whenever the unit is running. Should the engine overspeed above a safe, preset value, the control panel
initiates an automatic engine shutdown.
Owner's Manual for Stationary Industrial Generators
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