ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

ARMY TM 9-6115-464-34AIR FORCE 35C2-3-445-2NAVY NAVFAC P-8-624-343-58. GENERAL.Section Vlll. MAINTENANCE OF GENERATOR SET CONTROLSThis section contains maintenance instructions for the generator set controls. The control cubicle assembly andsensing monitors contain the controls, instruments and indicators for controlling and monitoring the operation ofthe generator set. Precise models of the generator set incorporate a governor control unit which signals theactuator unit to change the fuel injection pump governor setting which controls engine speed and, thus,generator frequency. This function is assumed by the manual speed control on utility models. Theinterconnecting wiring harnesses provide electrical connection between major assemblies and the controlcubicle and fault locating indicator.3-59. CONTROL CUBICLE ASSEMBLY.a. Frequency Meter and Transducer.(1)(2)(3)(4)(5)(6)(7)(8)Refer to the Operator and Unit Maintenance Manual and remove, clean, and inspect frequencymeter and transducer.Install frequency meter and transducer in a test setup as shown in figure 3-54.NOTETest frequency meter must have an accuracy of 0.05 percent.Activate sinusoidal source and adjust its output as indicated by the test frequency meter to the lowestfrequency indication on the frequency meter being tested (388 Hz for a 400 Hz frequency meter and48 Hz for a 50/60 Hz frequency meter).Rotate adjusting screw of frequency meter being tested until its indication exactly matches that of thetest frequency meter.If the frequency meter being tested cannot be properly adjusted, replace it and the frequencytransducer.When frequency meter being tested has been properly adjusted, slowly increase the sinusoidalsource frequency to the highest value of the frequency meter being tested (412 Hz for a 400 Hzfrequency meter and 62 Hz for a 50/60 Hz frequency meter).If at any point the indication of the frequency meter being tested varies more than 0.25 percent fromthat of the test frequency meter, replace both transducer and frequency meter being tested.Refer to the Operator and Unit Maintenance Manual and install frequency meter and transducer.b. Kilowatt Meter and Thermal Converter.(1) Refer to the Operator and Unit Maintenance Manual and remove, clean, and inspect kilowatt meterand thermal converter.(2) Test ac kilowatt meter and converter as follows:(a) Connect a calibrated kilowatt meter and a suitable variable load to the generator set load terminalboard.(b) Refer to the Operator and Unit Maintenance Manual and start the generator set.3-130