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TM 10-6640-215-13 SECTION III.  TECHNICAL PRINCIPLES OF OPERATION Alphabetical Index Maintenance Item Paragraph Functional Description of Petroleum Laboratory Support Systems .  ........................................................................ 1-13 Functional Description of Petroleum Laboratory Unique Equipment .  ...... ............................................................... 1-14 1-13. FUNCTIONAL DESCRIPTION OF PETROLEUM LABORATORY SUPPORT SYSTEMS. The  following  paragraphs  describe  the  systems  designed  to  support  the  Petroleum  Laboratory.    For  details  of  major equipment, refer to the appropriate equipment manual. a. Electrical System (Refer to Figure 1-5 and FO-I).  The Petroleum Laboratory has an input power requirement of 208V, 60Hz, 3-phase power.  Power is supplied by an external generator via a 50-foot (15 meter), 8-wire cable.  Power enters  the  Laboratory  through  J1  located  in  the  POWER  INPUT  PANEL.    From  J1  power  is  applied  to  Main  Circuit Breaker  A1CB1  in  MAIN  POWER  PANEL  after  a  5-minute  time  delay  for  a  purge  cycle.    When  the  purge  cycle  is completed,  A1CB1  may  be  closed.    The  panel  will  now  supply  110OV,  60Hz,  single  phase  power  to  the  laboratory compartment  normal  and  emergency  lighting,  convenience  outlets,  and  various  equipment  located  in  the  laboratory compartment.  It also supplies 208V, 60Hz, 3-phase power to POWER PANEL NO.  2 through A1CB2.  POWER PANEL NO.2 is located in the mechanical room.  It supplies 11OV, 60Hz, single-phase power for lighting, convenience outlets and  various  equipment  located  in  the  mechanical  room.    It  also  supplies  208V,  60Hz,  3-phase  power  to  the  four environmental control units and to other equipment located in the mechanical room that require it. NOTE Circuit  breakers  in  MAIN  POWER  PANEL  are  coded  Al;  circuit  breakers  in  POWER PANEL NO.  2 are coded A15. (1)   The MAIN POWER PANEL houses 22 circuit breakers.  This includes the Main Circuit Breaker AICB1.  A1CB2 is a 100-amp circuit breaker that supplies POWER PANEL NO.  2.  There is a 10-amp circuit breaker supplying the gas alarm control unit. There are twelve 15-amp, five 20-amp, and two 30-amp circuit breakers that supply power for compartment lighting, convenience outlets and other equipment in the compartment.  Also located in MAIN POWER PANEL are the following items: (a)   Fuses AIFI, A1F2, and AIF3.  These are 25-amp fuses used to protect the ECU blowers during the purge cycle. (b)   Relay AIKI.  This relay is used to turn on the control devices for the purge system.  It also prevents the Main Circuit Breaker A1CB1 from being closed until the purge cycle is completed. 1-22


 


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