(e)
Put the L and R PACK control selectors, on the P5 panel, to AUTO. 1) Make sure the PACK OFF lights and the INOP lights, on the L
and R PACK switch/lights, are not on. 2) Make sure the advisory messages L and R PACK OFF are not shown on the EICAS display. 3) Make sure the maintenance messages L or R PACK BITE are not shown on the EICAS display.
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757 FAULT ISOLATION/MAINT MANUAL
COOLING PACK
COMPONENT QTY ACCESS/AREA REFERENCE
CARD - FLOW CONTROL 2 119BL, MAIN EQUIP CTR, P50 21-51-09
CIRCUIT BREAKERS 1 FLT COMPT, P11
CONT - LEFT PACK AUTO, C702 1 11M11; 11A131 2 *
CONT - LEFT PACK FLOW, C653 1 11M13; 11A141 2 *
CONT - LEFT PACK STANDBY, C4037 1 11M25; 11A261 2 *
CONT - RIGHT PACK AUTO, C703 1 11M20; 11A281 2 *
CONT - RIGHT PACK FLOW, C704 1 11M22; 11A291 2 *
CONT - RIGHT PACK STANDBY, C4039 1 11M16; 11A151 2 *
PWR - LEFT PACK AUTO, C673 1 11M10; 11M111 2 *
PWR - LEFT PACK STANDBY, C4036 1 11M24 *
PWR - RIGHT PACK AUTO, C674 1 11M19 *
PWR - RIGHT PACK STANDBY, C4038 1 11M15 *
CONDENSER 2 119BL, MAIN EQUIP CTR, E3 21-51-10
CONTROLLER - PACK STANDBY 1 119BL, MAIN EQUIP CTR, E3 21-51-14
CONTROLLER - PACK TEMPERATURE 2 21-51-14
EXCHANGER - HEAT 4 193HL, 194ER 21-51-02
EXTRACTOR - WATER 2 193HL, 194ER 21-51-04
FAN/AIR PLENUM/DIFFUSER 2 193HL, 194ER 21-51-16
MACHINE - AIR CYCLE 2 193HL, 194ER 21-51-03
REHEATER - PACK 2 193HL, 194ER 21-51-07
RELAYS - (REF 31-01-36, FIG. 101)
L PACK AUTO/MAN 1, K57 1 *
L PACK AUTO/MAN 2, K58 1 *
L PACK AUTO/MAN 3, K10315 1 *
L PACK EXIT DOOR CLOSE MAN, K60 1 *
L PACK EXIT DOOR OPEN MAN, K59 1 *
L PACK INLET DOOR CLOSE MAN, K62 1 *
L PACK INLET DOOR OPEN MAN, K61 1 *
L PACK LOW LIMIT VALVE, K10317 1 *
L PACK TEMP CONT VALVE CLOSE MAN, K64 1 *
L PACK TEMP CONT VALVE OPEN MAN, K63 1 *
RELAYS - (REF 31-01-07, FIG. 101)
R PACK AUTO/MAN 1, K49 1 *
R PACK AUTO/MAN 2, K50 1 *
R PACK AUTO/MAN 3, K10316 1 *
R PACK EXIT DOOR CLOSE MAN, K52 1 *
R PACK EXIT DOOR OPEN MAN, K51 1 *
R PACK INLET DOOR CLOSE MAN, K54 1 *
R PACK INLET DOOR OPEN MAN, K53 1 *
R PACK LOW LIMIT VALVE, K10318 1 *
R PACK TEMP CONT VALVE CLOSE MAN, K56 1 *
R PACK TEMP CONT VALVE OPEN MAN, K55 1 *
SENSOR - COMPRESSOR OUTLET 2 193HL, 194ER 25-51-06
SENSOR - PACK TEMPERATURE 2 193HL, 194ER 21-51-08
SWITCH - ALTITUDE 1 193HL 21-51-17
SWITCH - COMPRESSOR OUTLET OVERHEAT 2 193HL, 194ER 21-51-05
SWITCH - PACK OVERHEAT 2 193HL, 194ER 21-51-18
VALVE - CABIN AIR SUPPLY CHECK 2 193HL, 194ER 21-51-15
VALVE - FLOW CONTROL AND SHUTOFF 2 193HL, 194ER 21-51-01
VALVE - PACK LOW LIMIT CONTROL 2 193HL, 194ER 21-51-11
VALVE - PACK TEMPERATURE CONTROL 2 193HL, 194ER 21-51-12
GUN 001-005
GUN 006-999
* SEE WM EQUIPMENT LIST
Component Index
Figure 101
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757 FAULT ISOLATION/MAINT MANUAL
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