TASK 21-26-00-710-004
 Operational Check of Ditching Configuration Control Circuit
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 212600-04
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific access platform 1.60 m (5 ft. 3 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure TSM 21 PB 101 (for corrective action)
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 3. Job Set-up
__________
 Subtask 21-26-00-865-053
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06 49VU AIR COND/AVNCS VENT/CTL 5HQ D05 122VU AIR COND/AVNCS/VENT/MONG 3HQ Y17

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 123VU AVNCS VENT/EXTC/FAN 2HQ AE02
 **ON A/C ALL
 123VU AVNCS VENT/BLOWER/FAN 1HQ AD10
 **ON A/C 301-399,
 123VU AVNCS VENT/EXTC/FAN 2HQ AC04
 **ON A/C ALL
 Subtask 21-26-00-865-054
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/CAB/PRESS/CTL1 1HL D09 122VU AIR COND/CAB PRESS/CTL/MAN 3HL Y23 122VU AIR COND/CAB PRESS/CTL/2 2HL Y22

 Subtask 21-26-00-941-089
 C. Safety Precautions
 (1)
 Make sure that the air conditioning packs are off.

 (2)
 Make sure that the engine 1 and 2 throttle control levers are at idle.

 Subtask 21-26-00-861-053
 D. Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 NOTE : The energization of the aircraft electrical circuits starts a full
____ test of the ventilation system. The test continues for 2 minutes approximately.
 Subtask 21-26-00-860-058
 E. Aircraft Maintenance Configuration
 (1)
 On the VENTILATION section of the panel 22VU:

 -make sure that the BLOWER and EXTRACT pushbutton switches are in the AUTO configuration (pushed, with the FAULT and OVRD legends off).

 (2)
 Do the EIS start procedure (Ref. TASK 31-60-00-860-001).

 (3)
 On the ECAM control panel, push the PRESS key.

 (4)
 On the lower ECAM display unit:

 -the PRESS page comes into view and shows the skin air-inlet and skin air-outlet valves in the open position (if the outside air temperature is above 11 deg.C (51,8 deg.F). If the outside air temperature is below 4 deg.C (39,2 deg.F), the skin air-inlet and skin air-outlet valves are closed).
 Subtask 21-26-00-010-050
 F. Get access to the Avionics Compartment
 (1)
 Open the access door 822.

 (2)
 Put the access platform in position.

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 4. Procedure
_________ Subtask 21-26-00-710-053
 A. Operational Test of the Control Circuit of the Ditching Configuration
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the CABIN PRESS section of the panel 25VU:
-push the DITCHING pushbutton switch.
2. On the CABIN PRESS section of the panel 25VU:
-release the DITCHING pushbutton switch.
5. Close-up
________
 Subtask 21-26-00-410-050
 A. Close Access
 (1) Close the access door 822.
On the DITCHING pushbutton switch:
-
the ON legend comes on.
On the PRESS page of the lower ECAM DU:

-
the skin air-outlet valve closes,
　
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