R 1EFF : 301-399, 401-499, 1 21-26-43Page 303 1 1 Config-2 Aug 01/05 1 1 1CES 1

 Demister Air Filter
 Figure 301/TASK 21-26-43-991-028

R 1EFF : 301-399, 401-499, 1 21-26-43Page 304 1 1 Config-2 Aug 01/05 1 1 1CES 1 Subtask 21-26-43-420-079

 C. Installation of the Demister Filter
 (1)
 Put a new demister filter (1) in position in the filter housing (2).

 (2)
 Turn and safety the seven door fasteners (3) of the filter housing

 (2) to close the door.
 5. Close-up
________ Subtask 21-26-43-410-086
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the access door 824 (Ref. TASK 52-41-00-410-002).

 (3) Remove the access platform(s). Subtask 21-26-43-865-114
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HQ, 2HQ, 3HQ, 5HQ, 6HQ
 Subtask 21-26-43-861-111
 C. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-26-43-862-106
 D. De-energize the ground service network (Ref. TASK 24-42-00-862-001).
R 1EFF : 301-399, 401-499, 1 21-26-43Page 305 1 1 Config-2 Aug 01/05 1 1 1CES 1 TASK 21-26-43-600-017

 Discard Filter Cartridge
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 212600-12
 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 filter cartridge
 No specific access platform 1.6 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 24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from
 the External Power 52-41-00-410-002 Close the Avionics Compartment Doors after Access 21-26-43-991-029 Fig. 302
 3. Job Set-up
__________
 Subtask 21-26-43-862-107
 A. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
 Subtask 21-26-43-861-112
 B. Energize the ground service network (Ref. TASK 24-42-00-861-001).
R 1EFF : 301-399, 401-499, 1 21-26-43Page 306 1 1 Config-2 Aug 01/05 1 1 1CES 1

 Subtask 21-26-43-865-115
 C. Open, safety and tag this(these) circuit breaker(s):
R  -------------------------------------------------------------------------------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 301-399, 
R R  123VU AVNCS VENT/EXTC/FAN **ON A/C 301-399, 401-499,  2HQ  AC04 
R R  123VU AVNCS VENT/BLOWER/FAN **ON A/C 401-499,  1HQ  AD10 
R R  123VU AVNCS VENT/EXTC/FAN **ON A/C 301-399, 401-499, 2HQ  AE02 
Subtask 21-26-43-010-092
 D. Get Access
 (1) Put the access platform in position at the access door 824. (2) Open the access door 824. 

R 1EFF : 301-399, 401-499, 1 21-26-43Page 307 1 1 Config-2 Aug 01/05 1 1 1CES 1

 4. Procedure
_________ (Ref. Fig. 302/TASK 21-26-43-991-029) Subtask 21-26-43-020-079
 A. Removal of the Filter Cartridge
 (1)
 Turn the seven door fasteners (5) of the filter housing (3) and open the door.

 (2)
 Push the cartridge clamp (4) and remove the filter cartridge (1).

 (3)
 Remove the cap (2) from the filter cartridge (1).

 (4)
 Discard the filter cartridge (1). Subtask 21-26-43-210-079

 B.
 Do an inspection of the component interface and/or the adjacent area. Subtask 21-26-43-420-080

 C. Installation of the Filter Cartridge
 (1)
 Put and safety the cap (2) on a new filter cartridge (1).

 (2)
 Put the filter cartridge (1) in position in the filter housing (3).

 (3)
　
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