and current under load and varies the exciter field either up  or  down  to  keep  the  generator  field  at  such  a  value as  to  maintain  constant  alternator  output  voltage.  The regulated voltage setting can be varied using the voltage adjust  rheostat  (R1  ). On MEP-003A, an ac receptacle (J14 ) is connected through a  protective  circuit  breaker  (CB3)  to  provide  120  VAC. 1-10.   TABULATED   DATA. a. Identification and Instruction Plates (see figures 1-1 and 1-2 ). (1) Identification Plate. (a) Location. This plate is located on the side of the control cubicle. (b)  Content. US DEPARTMENT OF DEFENSE GENERATOR   SET   DIESEL   ENGINE   10KW   60   HZ MODEL:   MEP-O03A GENERATOR   SET   DIESEL   ENGINE   10KW   400Hz MODEL:    MEP-112A NSN:   6115-00-465-1030   (MEP-003A) NSN:   6115-00-465-1027   (MEP-112A) TM   5-6115-585-12 TO-35C2-3-455-1 NAVFAC   P-8-623-12 TM-05684C/05685B-12 VOLTS:  120V  1PH. 120/240V   1PH. 120/208V   3PH. PF:  0.8 AMPS:   104,   52,34.7 DRY  WT:  1220  LB  (MEP-003A) DRY  WT:  1325  LB  (MEP-112A) LG:  62  IN W:  32  IN HGT:  37  IN CONTR   NO:   F04606-74-C-1133   (MEP-003A) CONTR   NO:   DAAK70-78-C-0177   (MEP-112A) TM   5-6115-585-12 NAVFAC   P-8-623-12 TO-35C2-3-455-1 TM-05684C/05685B-12 WARRANTY  : DATE INSP : MFD  BY:  ONAN  CORP. INSP  STAMP: (2)  Operating  Instruction  Plate. (a) Location. This plate is located on the side of the control cubicle. (b)  Content. OPERATING  INSTRUCTIONS BEFORE  STARTING  SET 1. Insure output circuit breaker is  off. 2. Fill crankcase (do not overfill) and fuel tank. Ensure that vent on underside of fuel filler cap is  open  before  starting  generator. 3.   “WARNING”   –  Ground  set  to  avoid  shock. hazard. 4. Set batteries are negative ground. STARTING  SET 1. 2. 3. 4. 5. 6. Move “MASTER  SWITCH”  to  “PRIME  & RUN” position to allow fuel to prime set. Move   “MASTER   SWITCH”   to   “PREHEAT” position end hold for (1) minute. NOTE: Preheat is not required when engine is hot. Move  “MASTER  SWITCH”  to  “START”  posi- tion and hold until engine fires continuously. If  engine  does  not  start  within  15  seconds, repeat steps 1 and 2. “MASTER SWITCH” will return to “PRIME & RUN” position when released. If running from auxiliary fuel source, move “MASTER SWITCH”  to  “PRIME  &  RUN  AUX  FUEL” position. After warm up. Check frequency and voltage and  adjust  if  necessary. M o v e    " A C    C i r c u i t    B r e a k e r "    t o    " O N" position. STOPPING  SET 1. 2. 3. Move   “AC   CIRCUIT position. BREAKER”   to   “OFF” Move  “MASTER  SWITCH”  to  “OFF”  position. For  emergency  stop   Pull  “DC  CONTROL CIRCUIT BREAKER-.” ^- 1 - 5 Change  6