B. Put the aircraft back to its initial configuration.
 (1) Disconnect the manometer from the pressure ports.
 (2) Install the protective caps (1) and (2) on the pressure ports. Subtask 21-26-42-410-061
 C. 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).

R 1EFF : 301-399, 401-499, 1 21-26-42Page 647 1 1 Aug 01/05 1 1 1CES 1

 FILTER ASSY - AVIONICS VENTILATION - SERVICING
______________________________________________

R **ON A/C 001-001, 051-052,
 TASK 21-26-43-600-001
 Servicing of the Demister Filter (2081HM)
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 212643-01
 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 1.6 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 CMM 212600 21-26-43-991-002 Fig. 301
R 1EFF : 001-049, 051-099, 101-105, 1 21-26-43Page 301 1 1 Config-1 May 01/05 1 1 1CES 1

 3. Job Set-up
__________ Subtask 21-26-43-862-062
 A. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
 Subtask 21-26-43-861-062
 B. Energize the ground service network (Ref. TASK 24-42-00-861-001). Subtask 21-26-43-865-064
 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------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 123VU AVNCS VENT/BLOWER/FAN 1HQ AD10 123VU AVNCS VENT/EXTC/FAN 2HQ AE02
 Subtask 21-26-43-010-056
 D. Get Access
 (1)
 Put the access platform in position at the access door 824.

 (2)
 Open the access door 824.

 4. Procedure
_________ (Ref. Fig. 301/TASK 21-26-43-991-002) Subtask 21-26-43-020-056
 A. Remove the demister filter.
 (1)
 Move the locking handle of the cover (3) to the top to release the handle.

 (2)
 Pull the handle to remove the filter/cover assembly. NOTE : Make sure that the plate (2) is in the correct position

____
R 1EFF : 001-001, 051-052, 1 21-26-43Page 302 1 1 Config-1 May 01/05 1 1 1CES 1

 Demister Air Filter
 Figure 301/TASK 21-26-43-991-002

R 1EFF : 001-049, 051-099, 101-105, 1 21-26-43Page 303 1 1 Config-1 May 01/05 1 1 1CES 1

 (3) Disengage the tabs one by one from the top to the bottom to remove the filter element (1) from the cover (3).
 Subtask 21-26-43-615-054
 B. Remove the demister filter and replace it by a new or restored one. Subtask 21-26-43-160-056
 C. Clean the component interface and/or the adjacent area.
 (Ref. CMM 212600).

 Subtask 21-26-43-210-056
 D. Do an inspection of the component interface and/or the adjacent area. NOTE : Make sure that the plate (2) is in the correct position
____ Subtask 21-26-43-420-056
 E. Install the demister filter
 (1)
 Engage the tabs of the cover (3) into the recesses of the filter element (1). Apply pressure to assemble both components.

 (2)
 Engage filter (1) in the body.

 (3)
 Lock the handle of cover (3) into the body.

 5. Close-up
________ Subtask 21-26-43-410-056
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
　
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