ARMY TM 9-6115-639-13 AIR FORCE TO 35C2-3-386-51 MARINE CORPS TM 10155A-13/1 Section I.  DESCRIPTION AND USE OF OPERATORS CONTROLS AND INDICATORS 2-1.  OPERATORS CONTROLS AND INDICATORS. Prior to placing the generator set into operation, personnel must be familiar with the location and function of  all  switches,  controls,  and  indicators.    Controls  and  indicators  required  for  generator  set  operation  are described below and identified in Figure 2-1.  Refer to the generator set electrical schematic, Figure FO-1, for reference designations.    1 HOURS Meter (M3) Indicates hours of generator set operation. 2 FUEL LEVEL Meter (M5) Indicates amount of fuel remaining in the generator set fuel tank. 3 VOLTAGE Meter (M1) Indicates generator set output voltage. 4 LOAD Meter (M2) Indicates generator load in kilowatts. 5 DC CIRCUIT BREAKER (CB1) Trips to stop generator set operation in case of electrical surge in DC control system.  Push to reset breaker. 6 Fault Indication Module (A2) Contains lights that indicate generator set operating conditions.  Includes the following indicator lights: ENGINE HIGH TEMP fault (red) LOW OIL PRESSURE fault (red) NO FUEL fault (red) OVERVOLTAGE fault (red) OVERLOAD SHORT CIRCUIT fault (red) BATTLE SHORT ON operation (yellow) Dual purpose FAULT RESET / PUSH TEST switch allows operator to test indicator lights before operation, and reset fault isolation module after fault has been remedied. 7 BATTLE SHORT Switch (S7) Two-position switch that allows generator set operation under certain fault conditions. ON position bypasses all faults except short circuit conditions.  BATTLE SHORT indicator on fault indicator module A2 (see item 6) will light when switch is in ON position. OFF position returns generator set to normal operating mode, allowing faults to halt generator set operation. 8 Convenience Receptacle (J1) (60Hz only) Single phase duplex receptacle which allows 120VAC appliance or tool connection. 9 GROUND FAULT CIRCUIT INTERRUPTER (GFCI) (CB3) (60Hz only) Provides automatic circuit interruption and circuit protection for the convenience receptacle (J1). 10 SLAVE RECEPTACLE (SR1) Allows for 24VDC auxiliary power connec- tion for starting generator set.  NATO style. 11 GND Terminal Generator set ground terminal. 12 L1, L2, N Terminals Generator set alternating current (L1, L2) and neutral (N) terminals. 2-2