TM 5-6115-593-12 TO 35C2-3-463-1 c. Single    Engine    Generator    Set    Operation. See    figure    2-8    for    single    generator    set operating instructions. d. Emergency  Operation.      If   any   emergency situation requires continued operation of the generator set after being shut down by one of  the  safety  device  electrical  circuits,  the BATTLE   SHORT   switch   can   be   used   to override  all  safety  devices,  except  reverse power,     overload,     overspeed     and     short circuit, as follows: (1) Place BATTLE SHORT switch in OFF position (figure 2-7). (2) Hold   MASTER   SWITCH   in   START position (figure 2-5) and start engine. (3) Place  BATTLE  SHORT  switch  to  the ON position. (4) Release MASTER SWITCH from START  position,  and  place  BATTLE SHORT   switch   in   OFF   position   as soon as possible after emergency has passed. NOTE The     BATTLE     SHORT     switch     may     be actuated,    in    emergency,    any    time    the generator set is operating. 2-7. EXERCISE OF ENGINE ON STANDBY SERVICE.    An  engine  on  standby  service,  customarily operated under optimum conditions, should be exercised at least on a monthly basis.  However, under environmental conditions involving extreme temperatures,   humidity,   dust,   sand,   etc.,   it   may   be necessary   to   shorten   the   interval   between   exercise periods to as often as weekly. Exercise period should be long enough so that the engine attains normal operating temperature  (160-200°°F,  (71  to  93°C)  and  if  possible, with  at  least  50  percent  of  its  normal  load.  Exercise engine as follows: a. Perform the preparation for starting instructions   shown   in   figure   2-5.      Make complete visual inspection of unit to be sure it is in proper operating condition. b. Start  engine  as  shown  in  figure  2-6.    After the   warmup   period,   run   engine   at   rated speed with whatever load is available, up to full  load,  for  the  period  of  time  required  to obtain   two   consecutive   water   temperature readings of 160°F (71°  C) minimum taken at 15-minute   intervals.      Continue   to   operate engine  for  30  minutes.  Check  and  correct any coolant or oil leaks. Table 2-1.    Engine Control Panel, Controls and Instruments FIGURE, INDEX NO. CONTROL AND INSTRUMENT FUNCTION NORMAL READING/SETTING 2-1,1 MASTER SWITCH START-STOP Switch   starts   and   stops   the generator set. Neutral 2-1,2 FUEL gauge Indicates level of fuel in tank Midrange 2-1,3 FUEL PUMP AUTO-OFF switch Activates fuel transfer (as required). AUTO 2-1,4 ENGINE OIL TEMP gauge Indicates temperature of oil 200 to 220°F (93 to 104°C) 2-1,5 ENGINE OIL PRESS gauge Indicates engine oil pressure 60 to 80 psi (42,186 to 56,248 kgs/m²) 2-1,6 BATTERY CHRG AMPS meter Indicates battery charging current. Positive range 2-1,7 ELAPSED TIME meter Indicates    operating    time    of generator set. —   —   — 2-2