(2)
The system test (par. 3) increases the function of the operational test to supply the necessary performance of the system.
TASK 26-17-00-715-001
2. Operational Test - Wheel Well Fire Detection (Fig. 501)
____________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 33-16-00/501, Master Dim and Test
B. Access
(1) Location Zones
211/212 Flight Compartment
C. Do a Test of the Wheel Well Fire Detection system
S 865-003
(1)
Supply electrical power to the standby AC bus and DC BAT bus (AMM 24-22-00/201).
S 755-002
(2)
Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:
(a)
11B10, WW FIRE DETECTION
(b)
11B35, WW FIRE TEST
(c)
11J33, 'A' WARN ELEX MODULE
(d)
11B18, 'B' WARN ELEX MODULE
S 755-005
(3) Push and hold the WHL WELL switch on the FIRE/OVHT TEST panel, M10445, on the aft pilots control stand, P8.
(a) Make sure these indications occur: 1) The discrete FIRE warning light, on the P1-3 panel, comes
on. 2) The WHEEL WELL FIRE light on the P3 panel comes on. 3) The EICAS message, WHEEL WELL FIRE, shows on the top
display. 4) The red MASTER WARNING lights, on the P7 panel, come on. 5) The fire bell is heard.
S 755-006
(4) Release the WHL WELL switch.
(a) Make sure the indications stop.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
M10445 PANELSEE
M10445 - FIRE/OVHT TEST PANEL
Wheel Well Fire Detection Component Location
Figure 501
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 865-007
(5) Remove electrical power if it is not necessary (AMM 24-22-00/201).
TASK 26-17-00-735-008
3. System Test - Wheel Well Fire Detection
_______________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 31-41-00/501, Engine Indication and Crew Alerting System (EICAS)
(3)
AMM 31-51-00/501, Warning System
(4)
AMM 33-16-00/501, Master Dim and Test
B. Access
(1) Location Zones
119/120 Main equipment center
211/212 Flight Compartment
C. Prepare for Test
S 865-009
(1)
Supply electrical power (AMM 24-22-00/201).
S 755-010
(2)
Make sure these systems do operate:
(a)
EICAS (AMM 31-41-00/501)
(b)
Warning system (AMM 31-51-00/501)
(c)
Master dim and test system (AMM 33-16-00/501)
S 755-017
(3) Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:
(a)
11B10, WW FIRE DETECTION
(b)
11B35, WW FIRE TEST
(c)
11J33, 'A' WARN ELEX MODULE
(d)
11B18, 'B' WARN ELEX MODULE
