(3)
 Install the pressure switch (2).

 (4)
 Install the washers (3), the screws (4) and tighten.

 (5)
 Remove the blanking plugs from the disconnected line ends.

 (6)
 Connect the pipe (7).

 (7)
 Remove the blanking caps from the electrical connectors.

 (8)
 Make sure that the electrical connectors are clean and in the correct condition

 (9) Connect the electrical connector (1).
 Subtask 21-26-11-865-052

 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 17HQ, 19HQ 1HQ, 3HQ, 5HQ, 6HQ FOR 30HQ 2HQ, 5HQ, 6HQ Subtask 21-26-11-710-050

 C. Do an operational test of the ventilation system of the avionics equipment (Ref. TASK 21-26-00-710-001).
 NOTE : As an alternative procedure , you can do this operational test
____ without the CFDS for the extract fan pressure switch (30HQ) only (Ref. TASK 21-26-11-710-001) (the CFDS is necessary for the operational test of the blower fan pressures switches 17HQ and 19HQ).
 5. Close-up
________
 Subtask 21-26-11-410-050

 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the access doors:
 FOR 19HQ, 30HQ

R  824 (Ref. TASK 52-41-00-410-002). FOR 17HQ 811
 (3) Remove the access platform(s).
 Subtask 21-26-11-862-051

 B. De-energize the ground service network (Ref. TASK 24-42-00-862-001).

 PRESSURE SWITCHES - BLOWER AND EXTRACT FAN (17HQ,19HQ,30HQ) - ADJUSTMENT/TEST
_____________________________________________________________________________ TASK 21-26-11-710-001 Operational Test of the Extract-Fan Pressure Switch (30HQ) (without the CFDS)
 1. Reason for the Job
__________________
 Test after the removal/installation of the extract-fan pressure switch 30HQ if the CFDS is unserviceable.
 2. Job Set-up Information
______________________
 A. 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
 3. Job Set-up
__________ Subtask 21-26-11-861-052
 A. Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 1EFF : ALL 1 21-26-11Page 501 1 1 May 01/04R 1 1 1CES 1

 Subtask 21-26-11-865-053
 B. 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 21-26-11-869-053
 C. Aircraft Maintenance Configuration
 (1)
 Make sure that the throttle control levers of the engines 1 and 2 are at idle.

 (2)
 On the VENTILATION section of the overhead control and indicating panel 22VU:

 -Make sure that the BLOWER and EXTRACT pushbutton switches are in the AUTO configuration (pushed and with the FAULT and OVRD legends off).
 Subtask 21-26-11-860-050
 D. Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).

 4. Procedure
_________ Subtask 21-26-11-710-051
 A. Do this test:
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1.
 On the rear circuit breaker panel 122VU: - open the circuit breaker 3HQ.

2.
 On the rear circuit breaker panel 122VU:

-close the circuit breaker 3HQ.
5. Close-up
________
 Subtask 21-26-11-860-051
 A. Do the EIS stop procedure (Ref. TASK 31-60-00-860-002).
 Subtask 21-26-11-862-052On the VENTILATION section of theoverhead control and indicating panel22VU:
　
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