TM 5-6115-593-12 TO 35C2-3463-1 Table 2-2.   Generator Control Panel, Controls and Instruments-Continued FIGURE, INDEX NO. CONTROL AND INSTRUMENT FUNCTION NORMAL READING/SETTING 2-2,10 Clock 50 HZ switch Allows   clock   operation   on   60 HZ As applicable. 2-2,11 ENG FAULT INDICATORS Indicates engine fault. OFF HI COOL TEMP Lights   if   coolant   temperature rises above -213 3°F  (100    0.7°C) OFF HI LUBE TEMP Lights  if  lube  temperature  rises above 255 3°F (124 1°C). OFF 2-2,11 LOW OIL PRESS Lights    if    oil    pressure    drops below 21 2 psi (1.5 kg/cm²). OFF LOW FUEL LEVEL Lights   indicating   fuel   in   day tank  is  at  a  low  level  (1-hour operation). OFF OVERSPEED Lights   if   engine   rpm   reaches 2200 to 2300 rpm. OFF 2-2,12 CLOCK Digital  clock,  indicates  time  in hours, minutes, and seconds. —   —   — 2-2,13 CLOCK HR ADJ switch Adjusts clock hour setting. OFF engine is cranking at 2-2,14 GEN FAULT indicators Indicates cranking time OFF OVERLOAD Lights    if    any    phase    current exceeds     110     percent     rated load. OFF OVERVOLT Indicates an overvoltage condition OFF UNDERVOLT Indicates an undervoltage condition. OFF REVERSE POWER Indicates a reverse power condition. OFF SHORT CIRCUIT Indicates a short circuit. OFF 2-2,15 Panel lamp Illuminates panel. —   —   — 2-2,16 ANNUNCIATOR TEST switch Activates    audible    alarm    and checks indicator bulbs. OFF 2-2,17 HOLD TIME switch Holds clock time. OFF 2-6