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Figure 2-22.  FMCP Controls and Indicators
Figure 2-23.  ERFS Fuel Management Electrical Control Panel (ECP)

TM-55-1560-307-13P AH-1E/F/P/S Helicopter Manual
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TM 55-1560-307-13&P f. Fuel low level light indicators (3).  Check to test operation; press and test the four lights.  Low level light will    illuminate    when    fuel    quantity    in    each    tank    is approximately  one  minute  from  being  empty,  Figure  2- 23. g. The    override    switch    (4)    overrides    the    fuel pressure switches, Figure 2-23. h. System  circuit  breakers  (5)  will  trip  if  indicator lights,   pumps,   or   override   switch   malfunctions.      All circuit   breakers   must   be   pushed   in   prior   to   system operation, Figure 2-23. i. Turn  pump  switch  (2)  ON  and  hold  until  pump engages, Figure 2-23. 2-12. OPERATION.  The ERFS system is an auxiliary fuel     system     designed     to     supplement     the     aircraft standard  fuel  system.    Refer  to  Figure  2-24  and  the following procedure for operating procedures. NOTE ·    In    order    to    maintain    aircraft    CG, suggested tank burn sequence is 4, 1, 3, 2. ·    After aircraft ground checks but prior to flight,   ensure   positive   fuel   flow   from ERFS to aircraft fuel system. a. Initiate fuel transfer when the aircraft's main fuel tanks   have   decreased   1000   pounds   or   sooner.      The ERFS  is  designed  as  an  automatic  system.  Once  fuel transfer  is  initiated,  the  pumps  can  be  turned  on  and simply monitored.  One fuel pump per side is enough to meet the demands of the aircraft.  Two pumps per side are installed for redundancy and for faster fuel transfer if desired. b. Ensure tank cam lever for selected tank is open. c.     Turn   all   pump   switches   (3)   (four   each)   ON, Figures 2-22, 2-23, and 2-24. NOTE Do   not   use   liquid   level   indicator   for continuous fuel quantity readings during flight.    Use  only  as  necessary.    Lock  in place after use. d. Transfer  fuel  until  low  level  warning  lights  (5) come on, Figure 2-22. NOTE Preferred method of operation is to turn all pumps ON during fuel transfer.  Allow at  least  10  second  delay  between  each pump switch actuation. 2-13. TURN-OFF  PROCEDURES.      Turn-off   system operation as follows: a. Turn   all   pump   switches   (3)   (four   each)   OFF, Figure 2-22. b.     Close cam lever (8), Figure 2-21. 2-29







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