- the CONT-AIR COND SYSTEM 2 (57HH) to the
PUSHBUTTON SWITCH-AIR COND/PACK 1 (6HB).
B. Do the test as given in the Para. 3.A.
EMERGENCY RAM AIR INLET - FAULT ISOLATION PROCEDURES
____________________________________________________
TASK 21-55-00-810-801
Emergency Ram Air Inlet Fault
1. Possible Causes
_______________
- ACTUATOR-EMERGENCY RAM AIR INLET (7HZ)
- RAM AIR pushbutton switch (4HZ)
- wiring
- RELAY-RAM AIR OPENING CTL (5HZ)
- RELAY-RAM AIR CLOSE CTL (3HZ)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-55-00-710-001 Operational Test of the Emergency Ram-Air Inlet AMM 21-55-51-000-001 Removal of the Emergency Ram Air Inlet Actuator (7HZ) AMM 21-55-51-400-001 Installation of the Emergency Ram Air Inlet Actuator
(7HZ)
ASM 21-55/01
AWM 31-54-52
3. Fault Confirmation
__________________
A. Do the operational test of the emergency ram air inlet (Ref. AMM TASK 21-55-00-710-001).
4. Fault Isolation
_______________
A. If during the test on the lower ECAM display the ram air symbol is replaced by amber XX:
- do a check for 28VDC at the ACTUATOR-EMERGENCY RAM AIR INLET (7HZ).
(1) If the voltage is correct:
- replace the ACTUATOR-EMERGENCY RAM AIR INLET (7HZ) (Ref. AMM TASK 21-55-51-000-001) and (Ref. AMM TASK 21-55-51-400-001).
(a) If the fault continues:
- replace the RAM AIR pushbutton switch (4HZ).
(b) If the fault continues:
- do a check and repair the wiring from: . the ACTUATOR-EMERGENCY RAM AIR INLET (7HZ) A/B, F to the SDAC-1 (1WV1) AA/9F, 10F,
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞21-55-00∞∞∞∞∞∞∞∞∞∞Page 201
Feb 01/98 CES
. the ACTUATOR-EMERGENCY RAM AIR INLET (7HZ) A/B, F to the
SDAC-2 (1WV2) AA/9F, 10F,
. the ACTUATOR-EMERGENCY RAM AIR INLET (7HZ) A/D, H to the GND,
. the RAM AIR pushbutton switch (4HZ) A/J to the SDAC-1 (1VW1)
AA/9G,
. the RAM AIR pushbutton switch (4HZ) A/J to the SDAC-2 (1WV2)
AA/9G,
. the RAM AIR pushbutton switch (4HZ) A/D3 to the GND,
(Ref. ASM 21-55/01) and (Ref. AWM 31-54-52).
(2) If the voltage is not correct:
- replace the RAM AIR pushbutton switch (4HZ).
(a) If the fault continues:
- replace the RELAY-RAM AIR OPENING CTL (5HZ).
(b) If the fault continues:
- replace the RELAY-RAM AIR CLOSE CTL (3HZ).
(c) If the fault continues:
- do a check and repair the wiring from the ACTUATOR-EMERGENCY RAM AIR INLET (7HZ) to the circuit breaker (1HZ), via the relay (5HZ), the RAM AIR pushbutton switch (4HZ) and the relay (3HZ) (Ref. ASM 21-55/01).
R B. Do the test given in para. 3.
TASK 21-55-00-810-802
Emergency Ram Air Inlet does not close in Ditching Configuration
1. Possible Causes
_______________
- RELAY-RAM AIR CLOSE CTL (3HZ)
- DITCHING pushbutton switch (13HL)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
21-55-00-810-801 Emergency Ram Air Inlet Fault
AMM 21-55-00-710-002 Operational Test of the Emergency Ram-Air Inlet
System-Closing in Ditching Configuration
ASM 21-55/01
3. Fault Confirmation
__________________
A. Do the operational test of the emergency ram air inlet system-closing in ditching configuration (Ref. AMM TASK 21-55-00-710-002).
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