-make sure that the PACK FLOW selector is in the NORM position.
(2)
On the CARGO HEAT panel 22VU:
-
make sure that the HOT AIR pushbutton switch is in the on position (with the FAULT and OFF legend off).
-
make sure that the AFT cargo TEMP selector is in the 12 o'clock position.
-
make sure that the AFT ISOL VALVE pushbutton switch is in the on position (with the FAULT and OFF legend off).
(3)
Make sure that the AFT cargo extraction fan operates.
(4)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
(5) Do the preconditioning with the APU (Ref. TASK 12-33-21-618-001). **ON A/C 301-399,
Subtask 21-43-00-860-052-A
D. Aircraft Maintenance Configuration
(1)
On the AIR COND panel 30VU:
-
make sure that the PACK 1 and the PACK 2 pushbutton switches are in the on position (with the FAULT and OFF legend off).
-
make sure that the X-BLEED selector is in the AUTO position.
-
make sure that the ECON FLOW pushbutton switch is in the off position (with the ON legend off).
(2)
On the CARGO HEAT panel 22VU:
-
make sure that the HOT AIR pushbutton switch is in the on position (with the FAULT and OFF legend off).
-
make sure that the AFT cargo TEMP selector is in the 12 o'clock position.
-
make sure that the AFT ISOL VALVE pushbutton switch is in the on position (with the FAULT and OFF legend off).
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(3)
Make sure that the AFT cargo extraction fan operates.
(4)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
(5) Do the preconditioning with the APU (Ref. TASK 12-33-21-618-001). **ON A/C ALL
4. Procedure
_________ Subtask 21-43-00-710-056
A. Operational Tests
(1) Do the operational test of the Aft cargo-compartment heating system:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the panel 30VU:
-push the APU BLEED pushbutton switch (only if the APU is available).
2. On the ECAM control panel 11VU:
-push the COND pushbutton
switch.
3. On the panel 22VU:
-
put the AFT cargo TEMP selector in the HOT position.
-
put the AFT cargo TEMP selector in the COLD position.
On the panel 30VU:
-
the blue ON light in the APU BLEEDpushbutton switch comes on.
On the ECAM lower display unit:
-
the COND page comes on.
-
the two green AFT isolation valve symbols are open.
-
the green HOT AIR valve symbol is open.
-if there is a temperature demand signal, the green trim air valve symbol starts to open until the temperature demand is met.
-
the green trim air valve symbolopens.
-
the green trim air valve symbolcloses.
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(2) Do the operational test of the AFT cargo-compartment smoke-detection with the CFDS to confirm isolation valve latching circuit integrity. (Ref. TASK 26-16-00-710-003). ________
5. Close-up
Subtask 21-43-00-860-053
A. Aircraft Maintenance Configuration
(1)
Stop the preconditioning with the APU (Ref. TASK 12-33-21-618-001).
(2)
On the AIR COND panel 30VU:
-
make sure that the PACK 1 and the PACK 2 pushbutton switches are in the OFF position.
-
make sure that the APU BLEED pushbutton switch is in the off position (with the FAULT and ON legend off).
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