(a)
RAM IN DOOR 0.00 - 0.05 (door open)
(b)
AIRPLANES WITH THE RAM OUT DOOR INDICATION ON EICAS; RAM OUT DOOR 0.00 - 0.05 (door open)
(c)
TEMP VALVE 0.00 - 0.05 (valve closed)
E.
Put the airplane back to its usual condition:
S 865-206
(1)
Do the activation procedure for the spoilers (AMM 27-61-00/201) if you did the deactivation procedure.
S 865-414
(2)
Remove the electrical power if it is not necessary
(AMM 24-22-00/201),
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A
757 MAINTENANCE MANUAL
TASK 21-51-00-715-345
4. Operational Test - Pack High Flow Inhibit (Fig. 502, 503)____________________________________________________
A. General
(1)
This procedure does a test of the pack high flow inhibits. In normal operation, the flow control and shutoff valve (FCV) will be in the high flow position when the APU is the pneumatic source and the airplane is on the ground. When the airplane is in the air and the engines are the pneumatic source, the FCV is normally in the low flow position. Under certain conditions, the FCV will be commanded to the high flow position.
B.
References
(1)
AMM 06-41-00/201, Fuselage Access Doors and Panels
(2)
AMM 24-22-00/201, Electric Power - General
(3)
AMM 27-61-00/201, Spoiler/Speedbreak Control System
(4)
AMM 32-09-02/201, Air/Ground Relays
(5)
AMM 36-00-00/201, Pneumatic General
(6)
AMM 77-12-03/201, Engines Speed Cards
C.
Access
(1)
Location Zones
135/136 Environmental control system bay
(2)
Access Panels 193HL/194HR Environmental control system bay doors
D.
Prepare for the test
S 865-231
(1)
GUN 006-999;
Make sure these circuit breakers are closed:
(a)
Overhead Circuit Breaker Panel, P11: 1) 11A13, AIR COND PACK LEFT AUTO CONT 2) 11A14, AIR COND PACK LEFT FLOW CONT 3) 11A15, AIR COND RIGHT STANDBY CONT 4) 11A26, AIR COND LEFT STANDBY CONT 5) 11A28, AIR COND PACK RIGHT AUTO CONT 6) 11A29, AIR COND PACK RIGHT FLOW CONT
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A
757 MAINTENANCE MANUAL
COOLING PACK SEE A
LOW LIMIT VALVE
MAIN LANDING
ECS BAY GEAR DOORS
ACCESS DOORS
RAM AIR
EXIT DOOR
COMPRESSOR OVERHEAT OUTLET SENSOR SWITCH PACK (2 PLACES)
COMPRESSOR OUTLET
OVERHEAT SWITCH PACK FLOW CONTROL AND TEMPERATURE SHUTOFF VALVE SENSOR
SEE B
FWD (2 PLACES)
LEFT SIDE SHOWN, RIGHT SIDE SIMILAR
RAM AIR
COOLING PACK
INLET DOOR A
SOLENOID B
ELECTRICAL VISUAL
CONNECTOR POSITION
SOLENOID A
INDICATOR ELECTRICAL CONNECTOR
POSITION SWITCH ELECTRICAL CONNECTOR
ELECTROMAGNETIC CONTROL VALVE ELECTRICAL FLOW CONTROLCONNECTOR AND SHUTOFF VALVE
LEFT SIDE SHOWN, RIGHT SIDE SIMILAR
B
Cooling System Components Figure 503
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A 757 MAINTENANCE MANUAL
7) 11M11, LEFT PACK AUTO POWER 8) 11M15, RIGHT PACK STANDBY POWER 9) 11M19, RIGHT PACK AUTO POWER 10) 11M24, LEFT PACK STANDBY POWER
S 865-448
(2) GUN 001-005; Make sure these circuit breakers are closed:
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