(7)
 Remove the screws (1), the washers (2,5), the lanyards (3) and the nuts (6).

 (8)
 Carefully remove the smoke detector (13) with the packing (12) from the air extraction hood (8).

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 TASK 26-17-15-400-004

 Installation of the Lavatory Smoke Detector 5WQ
 1. Reason for the Job
__________________
 Self Explanatory
 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 25-23-42-400-002 Installation of the Ceiling Panels - Aft Utility Area 26-17-00-710-001 Operational Test of the Lavatory Smoke-Detection
 System 26-17-15-991-004 Fig. 403
 3. Job Set-up
__________
 Subtask 26-17-15-860-053
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).

 (2)
 Make sure that the aircraft is in the same configuration as for the removal task.

 Subtask 26-17-15-865-065
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/SDCU/CHAN1 11WQ C06 122VU AIR COND/SDCU/CHAN2 12WQ T18
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 4. Procedure
_________

 (Ref. Fig. 403/TASK 26-17-15-991-004) Subtask 26-17-15-420-054
 A. Installation of the Lavatory Smoke Detector CAUTION : MAKE SURE THAT THE AIR EXTRACTION GRILL, THE SMOKE DETECTOR AND
_______ THE AIR EXTRACTION DUCT ARE IN LINE WITH THE EXTRACTOR AIRFLOW. INCORRECT INSTALLATION CAN CAUSE MALFUNCTION OF THE SMOKE DETECTOR.
 (1)
 Carefully install the packing (12) with the smoke detector (13) to the air extraction hood (8).

 (2)
 Install the screws (1), the washers (2,5), the lanyards (3) and the nuts (6).

 (3)
 Carefully put the air extraction hood (8) with the smoke detector

 (13) in position on the ceiling panel and install the screws (9).

 (4)
 Carefully push the air extraction grill (7) into the air extraction hood (8).

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

 (6)
 Connect the hose (11) to the air extraction hood (8) and tighten the clamp (10).

 (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 5WQ-A (4) to the smoke detector (13).

 Subtask 26-17-15-865-085
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 11WQ, 12WQ.
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 C. Test of the Lavatory Smoke Detector
 (1) Do an operational test of the lavatory smoke-detection system (Ref. TASK 26-17-00-710-001).
 5. Close-up
________ Subtask 26-17-15-410-055
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the ceiling panel 262BC (Ref. TASK 25-23-42-400-002).

 (3) Remove the stepladder. Subtask 26-17-15-862-057
 B. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

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 TASK 26-17-15-750-001 Special Test of the Lavatory Smoke Detector
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific smoke generation kit
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
　
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