Carrier ASPAX1CCA015 Installation And Owner's Manual

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OPERATION Section 3 - Operation1S kW GeneratorTile generator is equipped with an external 15 amp,120 volt, GFCI convenience outlet that is located intile right rear of the generator enclosure. _rhen tilegenerator is running, in the absence of utility power,this outlet may be used to power items outside ahome such as lights or power tools. This outlet mayalso be used when utility power is present by run-ning the generator in manual mode. This outlet doesnot provide power if the generator is not running.This outlet is protected by a 15 amp circuit breakerlocated in the generator control panel {Figure 3.1 ).3.4 SEQUENCEOF AUTOMATICOPERATIONThe generator's control panel houses a control logiecircuit board. This board constantly monitors util-ity power source voltage. Should that voltage dropbelow a preset level, circuit board action will signalthe engine to crank and start. After the engine starts,the circuit board signals the transfer switch to acti-vate and connect load circuits to the standby powersupply (load terminal lugs T l/T2 connect to terminallugs E l/E2).Upon restoration of utility source voltage above apreset level, generator circuit board action signals thetranster switch to transfer loads back to that powersupply. After retranster, the engine is signalled to shutdown.The actual sequence of operation is controlled bysensors anti timers on a control logic circuit board,as follows:A. Utility Voltage Dropout Sensor. This sensor monitors utility source voltage.* If utility source voltage drops below about 70percent of the nominal supply voltage, the sensorenergizes a 15-second timer.° Once the timer has expired, the engine will crankand start.B. Engine Warm-up Time Delay° This mechanism lets the engine warm tip forabout 10 seconds before the load is transferredto a standby source.C. Standby Voltage Sensor* This sensor monitors generator AC output volt-age. When the voltage has reached 50 percent ofthe nominal rated voltage, transfer to standbyear occur.D. Utility Voltage Pickup Sensor* This sensor monitors utility power supply volt-age. When that voltage is restored to above 70percent of the nominal source voltage, a retrans-ter time delay starts timing.14E.Retransfer Time Delay. This timer runs for about 15 seconds.° At end of a 15-second delay, circuit board actionde-energizes the transfer relay in the transferswitch.° Retransfer to utility power source then occurs.E Engine Cool-down Timer° When the load is transferred back to utility powersource, the engine cool-down timer starts tin>ing.° The timer will run for about one minute, and thegenerator will then shut down.3.5 MANUAt.TRANSFEROPERATION@ 3.5.1 TRANSFERTO GENERATORPOWERTo start the generator and activate the transfer switchmanually, proceed as lbllows:1. Set the generator's AUTO/OFF/1VLA_NUAL switch toOFE2. Set the generator's main circuit breaker to itsOFF (or OPEN) position.3. %lrn OFF the utility power supply to the transferswitch using the means provided {such as a utilitymain line circuit breaker).A4_Do not attempt to activate the transfer switchmanually unti[ all power voltage supplies to theswitch have been positively turned off. FaiJureto turn off all power vottage supplies may resultin extremely hazardous and possibly fataJ etec-tricaJ shock.Use the manual transfer handle inside the trans-fer switch to move the main contacts to their"Standby"position, i.e., loads connected to thestandby power source (Figure 3.2).Figure 3.2 - ManuM Transfer Switch OperationiLOADCONNECTEDTO UTiLiTY POWERSOURCELOAD CONNECTEDTO STANDBYPOWERSOURCEiMANUAL TRANSFERHANDLETRANSFER SWITCHOPERATING LEVER