W DOC AIRBUS | AMM A320F

Decontamination of the Environmental Control System (ECS) when the Temperature is above 24 deg.C (APU)

TASK 21-00-00-615-002-A
Decontamination of the Environmental Control System (ECS) when the Temperature is above 24 deg.C (APU)

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the Job
To decontaminate the ECS if oil has gone into it from the APU.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
COVER - PROTECTION
No specific
AR
LOCALLY MANUFACTURED - BLANKING CAP
No specific
AR
LOCALLY MANUFACTURED - TEMPERATURE SIMULATING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08ABC1)
Aqueous Cleaner-Aircraft Exterior Pressure Spraying -
(Material No.08BBB1)
Non Aqueous Cleaner-- Petroleum Based -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
191BB, 191KB, 192FB, 192KB
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 05-24-50-210-801-A
GENERAL VISUAL INSPECTION OF CORE COMPARTMENT (EWIS)
TASK 12-33-21-618-001-A-01
Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02
Pre-conditioning with the APU
TASK 21-00-00-100-001-A
Cleaning of Special Components in the Environmental Control System (ECS)
TASK 21-00-00-615-001-A
Decontamination of the Environmental Control System (ECS) when the Temperature is below 24 deg.C (APU)
TASK 21-21-00-710-001-A
Operational Test of the Cabin Recirculation Fans
TASK 21-21-41-000-001-A
Removal of the Recirculation Filter
TASK 21-21-41-400-001-A
Installation of the Recirculation Filter
TASK 21-21-51-000-001-A
Removal of the Cabin Recirculation Fans
TASK 21-21-51-400-001-A
Installation of the Cabin Recirculation Fans
TASK 21-43-00-710-003-A
Operational Test of the AFT Cargo Compartment Heating System
TASK 21-43-51-000-001-A
Removal of the Aft Cargo-Trim Air-Valve
TASK 21-43-51-400-001-A
Installation of the Aft Cargo-Trim Air-Valve
TASK 21-43-52-000-001-A
Removal of the Pressure Regulating Valve - Aft Cargo-Compartment Heating
TASK 21-43-52-400-001-A
Installation of the Pressure Regulating Valve - Aft Cargo-Compartment Heating
TASK 21-51-41-000-001-A
Removal of the Ozone Filter
TASK 21-51-41-400-001-A
Installation of the Ozone Filter
TASK 21-51-51-000-001-A
Removal of the Pack Flow-Control Valve/ Pack Flow-Control Unit
TASK 21-51-51-400-001-A
Installation of the Pack Flow-Control Valve/ Pack Flow-Control Unit
TASK 21-52-16-000-001-A
Removal of the Water Extractor
TASK 21-52-16-400-001-A
Installation of the Water Extractor
TASK 21-52-21-000-001-A
Removal of the Air Cycle Machine
TASK 21-52-21-400-001-A
Installation of the Air Cycle Machine
TASK 21-52-32-400-001-A
Installation of the Condenser
TASK 21-52-42-000-001-A
Removal of the Water Injector
TASK 21-52-42-400-001-A
Installation of the Water Injector
TASK 21-52-43-400-001-A
Installation of the Pack Downstream Check-Valves
TASK 21-63-00-710-004-A
Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
TASK 21-63-17-000-001-A
Removal of the Temperature Sensors
TASK 21-63-17-400-001-A
Installation of the Temperature Sensors
TASK 21-63-52-000-001-A
Removal of the Pressure Regulating Valve
TASK 21-63-52-400-001-A
Installation of the Pressure Regulating Valve
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 26-12-17-000-803-A
Removal of the Aft Fire/Overheat Detector
TASK 26-12-17-400-803-A
Installation of the Aft Fire/Overheat Detector
TASK 26-12-61-000-802-A
Removal of the Loop-A Fire Harness and Electrical Rail Assembly
TASK 26-12-61-400-802-A
Installation of the Loop-A Fire Harness and Electrical Rail Assembly
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
TASK 36-11-00-710-802-A
Operational Test of the Bleed Air System
TASK 36-11-49-000-040-A
Removal of the Pylon Interface Duct
TASK 36-11-49-000-042-A
Removal of the Pylon Interface Duct
TASK 36-11-49-000-822-A
Removal of the Environmental Control System (ECS) Ducts
TASK 36-11-49-000-823-A
Removal of the Environmental Control System (ECS) Sense Lines
TASK 36-11-49-400-040-A
Installation of the Pylon Interface Duct
TASK 36-11-49-400-042-A
Installation of the Pylon Interface Duct
TASK 36-11-49-400-822-A
Installation of the Environmental Control System (ECS) Ducts
TASK 36-11-49-400-823-A
Installation of the Environmental Control System (ECS) Sense Lines
TASK 36-11-49-400-824-A
Installation of the Environmental Control System (ECS) Interface Duct
TASK 36-11-52-000-802-A
Removal of the Bleed Pressure-Regulator Valve
TASK 36-11-52-400-802-A
Installation of the Bleed Pressure-Regulator Valve
TASK 36-11-53-000-802-A
Removal of the Overpressure Valve
TASK 36-11-53-400-802-A
Installation of the Overpressure Valve
TASK 49-00-00-860-005-A
APU Start by External Power
TASK 49-00-00-860-005-A-01
APU Start by Batteries
TASK 49-00-00-860-006-A
APU Shutdown by External Power
TASK 49-00-00-860-006-A-01
APU Shutdown by Batteries
TASK 49-00-00-860-008-A
APU Start by External Power
TASK 49-00-00-860-008-A-01
APU Start by Batteries
TASK 49-00-00-860-009-A
APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01
APU Shutdown by Batteries (131-9(A))
TASK 49-11-11-000-003-A
Removal of the Power Plant (APU) (APS 3200)
TASK 49-11-11-000-004-A
Removal of the Power Plant (APU) (131-9(A))
TASK 49-11-11-400-003-A
Installation of the Power Plant (APU) (APS 3200)
TASK 49-11-11-400-004-A
Installation of the Power Plant (APU) (131-9(A))
TASK 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A
Installation of the Quick-Release Access Panels on the Belly Fairing Structure
TASK 75-24-49-000-803-A
Removal of the Component Cooling Lines
TASK 75-24-49-400-803-A
Installation of the Component Cooling Lines
TASK 78-32-00-210-821-A
General Visual Inspection (GVI) of the Thrust Reverser Thermal Insulation Blankets
F Special Blanking Caps
F Temperature Simulating Device - Version 1
F ECS - Component Location ** ON A/C NOT FOR ALL
F ECS - Component Location ** ON A/C NOT FOR ALL
F ECS - Component Location ** ON A/C NOT FOR ALL
F ECS - Component Location ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 21-00-00-850-053-A ** ON A/C NOT FOR ALL
A. AFR Required CAUTION
Subtask 21-00-00-941-051-A
B. Necessary Special Tools
   (1) LOCALLY MANUFACTURED - BLANKING CAP
These are to be locally manufactured, refer to
F Special Blanking Caps
   (2) LOCALLY MANUFACTURED - TEMPERATURE SIMULATING
These are to be locally manufactured, refer to schematic in
F Temperature Simulating Device - Version 1
Subtask 21-00-00-861-051-A
C. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 21-00-00-860-058-A
D. Aircraft Maintenance Configuration
   (1) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
   (2) On the ECAM control panel push the COND pushbutton switch.
   (3) Make sure that at least one of the CKPT, the FWD cabin or the AFT cabin temperatures shown on the ECAM lower display unit (DU) is more than 24 deg. C.
   (4) If none of the temperatures is more than 24 deg. C you must do the alternative ECS decontamination procedure (Ref. AMM TASK 21-00-00-615-001).
Subtask 21-00-00-865-060-A
E. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/MONG2HA1D11
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL2HA1D11
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
** ON A/C NOT FOR ALL
122VUAIR BLEED/ENG 2/MONG2HA2Z22
** ON A/C NOT FOR ALL
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 21-00-00-010-051-A
F. Remove the access panels 191BB, 192FB, 191KB and 192KB (Ref. AMM TASK 53-35-13-000-002).
4. Procedure
Subtask 21-00-00-869-061-A
A. Cleaning of the APU Bleed Air Duct forward of the Load Control Valve
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
   (1) Put a warning notice in position in the cockpit to tell persons not to start the APU or the engines.
   (2) Remove the APU bleed-air duct elbow (A) forward of the load control valve,
   (3) Do a check for and remove any large quantities of oil which may be present in the ducts or in the connector grooves of the 'v'-flanges.
   (4) Cleaning of Contaminated Ducts
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
     (a) Clean heavily contaminated ducts with a Textile-Lint free Cotton - (Material No.14SBA1) and Aqueous Cleaner-Aircraft Exterior Pressure Spraying - (Material No.08ABC1) .
   (5) Install the APU bleed-air duct elbow (A),
NOTE: Make sure that you do the leak check after installation of the bleed-air duct elbow.
Subtask 21-00-00-869-053-A ** ON A/C NOT FOR ALL
B. Preparation for Cleaning of the Cross Feed, the Engine and the APU Bleed Air Ducts
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
   (1) Make sure that:
  • The warning notice is in position in the cockpit to tell persons not to start the APU or the engines.
   (2) Disconnect the Pylon Interface Duct (B) on both engines at the bleed-pressure regulator valve side of the ducts (Ref. AMM TASK 36-11-49-000-040).
   (3) Turn the Pylon Interface Duct (B) so that they face away from the engines and any electrical cables or equipment.
NOTE: The open ends of the Pylon Interface Duct (B) must face in such a direction that the hot bleed air can vent freely to atmosphere.
   (4) Put COVER - PROTECTION on the open ends of the bleed-pressure regulator valve.
   (5) Remove the WARNING NOTICE(S).
Subtask 21-00-00-869-053-C ** ON A/C NOT FOR ALL
B. Preparation for Cleaning of the Cross Feed, the Engine and the APU Bleed Air Ducts
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
   (1) Make sure that:
  • The warning notice is in position in the cockpit to tell persons not to start the APU or the engines.
   (2) Disconnect the Pylon Interface Duct (B) on both engines at the bleed-pressure regulator valve side of the ducts (Ref. AMM TASK 36-11-49-000-042).
   (3) Turn the Pylon Interface Duct (B) so that they face away from the engines and any electrical cables or equipment.
NOTE: The open ends of the Pylon Interface Duct (B) must face in such a direction that the hot bleed air can vent freely to atmosphere.
   (4) Put COVER - PROTECTION on the open ends of the bleed-pressure regulator valve.
   (5) Remove the WARNING NOTICE(S).
Subtask 21-00-00-869-053-F ** ON A/C NOT FOR ALL
B. Preparation for Cleaning of the Cross Feed, the Engine and the APU Bleed Air Ducts
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
   (1) Make sure that the warning notice is in position in the cockpit to tell persons not to start the APU or the engines.
   (2) Remove the overpressure valve (Ref. AMM TASK 36-11-53-000-802).
   (3) Remove the ECS starter duct (Ref. AMM TASK 36-11-49-000-822).
   (4) If necessary, re-install the ECS interface duct (Ref. AMM TASK 36-11-49-400-824).
   (5) Remove the bleed pressure-regulator valve (Ref. AMM TASK 36-11-52-000-802).
   (6) Remove the component cooling hose (Ref. AMM TASK 75-24-49-000-803) and put COVER - PROTECTION on the open ends.
   (7) Remove the ECS sense line hoses (Ref. AMM TASK 36-11-49-000-823).
   (8) Remove the aft fire/overheat detector (Ref. AMM TASK 26-12-17-000-803).
   (9) Remove the loop-A fire harness and the electrical rail assembly (Ref. AMM TASK 26-12-61-000-802).
   (10) Remove the COVER - PROTECTION from the ECS interface duct.
   (11) Remove the WARNING NOTICE(S).
Subtask 21-00-00-865-061-A
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
Subtask 21-00-00-860-059-A
D. Do the Start Procedure for the APU
NOTE: Wait at least 3 minutes after APU start before selecting APU Bleed.
Subtask 21-00-00-160-053-A
WARNING: BE CAREFUL WHEN THE DUCTS ARE DISCONNECTED THE TEMPERATURE OF THE EXHAUST GASES FROM THE OPEN ENDS OF THE DISCONNECTED DUCTS CAN BE AS HIGH AS 270 DEG.C (518 DEG.F). THE HOT GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
E. Cleaning of the Cross Feed, the Engine and the APU Bleed Air Ducts by "Residual Burning"
NOTE: Make sure that no persons are near the engines when you do this cleaning procedure.
   (1) On the AIR COND panel 30VU:
     (a) Make sure that:
  • the APU BLEED pushbutton switch ON legend shows on.
  • the OFF legend on the PACK 1 and the PACK 2 pushbutton switches shows off.
  • the X-BLEED selector is in the OPEN position.
   (2) Run the APU for approx. 15 minutes.
Subtask 21-00-00-869-062-A
F. Do the Procedure to Stop the APU
Subtask 21-00-00-860-060-A ** ON A/C NOT FOR ALL
G. Aircraft Maintenance Configuration
   (1) On the AIR COND panel 30VU set the X BLEED selector to the AUTO position.
   (2) Reconnection of the Bleed-Air Joint Ducts at the Engines
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
     (a) Remove the COVER - PROTECTION from the open ends of the bleed pressure-regulator valves.
     (b) Connect the Pylon Interface Duct (B) (Ref. AMM TASK 36-11-49-400-040).
NOTE: Make sure that you do the leak check after connection of the Pylon Interface Duct (B).
Subtask 21-00-00-860-060-C ** ON A/C NOT FOR ALL
G. Aircraft Maintenance Configuration
   (1) On the AIR COND panel 30VU set the X BLEED selector to the AUTO position.
   (2) Reconnection of the Bleed-Air Joint Ducts at the Engines
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
     (a) Remove the COVER - PROTECTION from the open ends of the bleed pressure-regulator valves.
     (b) Connect the Pylon Interface Duct (B) (Ref. AMM TASK 36-11-49-400-042).
NOTE: Make sure that you do the leak check after connection of the Pylon Interface Duct.
Subtask 21-00-00-860-060-F ** ON A/C NOT FOR ALL
G. Aircraft Maintenance Configuration
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Do a general visual inspection of the core compartment (Ref. AMM TASK 05-24-50-210-801). Clean the components of the exhaust plume of the ECS interface duct if necessary.
   (2) Do a general visual inspection of the thrust-reverser thermal blankets (Ref. AMM TASK 78-32-00-210-821).
   (3) Install the component cooling hose (Ref. AMM TASK 75-24-49-400-803).
   (4) Install the aft fire/overheat detector (Ref. AMM TASK 26-12-17-400-803).
   (5) Install the loop-A fire harness and the electrical rail assembly (Ref. AMM TASK 26-12-61-400-802).
   (6) Install the bleed pressure-regulator valve (Ref. AMM TASK 36-11-52-400-802).
   (7) Install the ECS starter duct (Ref. AMM TASK 36-11-49-400-822).
   (8) Install the ECS sense line hoses (Ref. AMM TASK 36-11-49-400-823).
   (9) Install the overpressure valve (Ref. AMM TASK 36-11-53-400-802).
   (10) If necessary, re-install the ECS interface duct (Ref. AMM TASK 36-11-49-400-824).
   (11) Do the operational test of the bleed air system (Ref. AMM TASK 36-11-00-710-802).
Subtask 21-00-00-865-062-A
H. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
Subtask 21-00-00-865-063-A
I. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/MONG2HA1D11
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL2HA1D11
** ON A/C NOT FOR ALL
122VUAIR BLEED/ENG 2/MONG2HA2Z22
** ON A/C NOT FOR ALL
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 21-00-00-865-064-A
J. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/ZONE TEMP CTL/28VDC/SYS24HKV20
122VUAIR COND/ZONE TEMP CTL/28VDC/SYS13HKV19
122VUAIR COND/ZONE TEMP CTL/115VAC/SYS22HKV18
122VUAIR COND/ZONE TEMP CTL/115VAC/SYS11HKV17
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C ALL
122VUAIR COND/RECIRC FAN/R/CTL11HGW20
122VUAIR COND/RECIRC FAN/R/SPLY3HGW18
122VUAIR COND/RECIRC FAN/L/CTL2HGX20
122VUAIR COND/RECIRC FAN/L/SPLY1HGX18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
Subtask 21-00-00-869-054-A ** ON A/C NOT FOR ALL
K. Preparation for the Stage 1 Cleaning of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove the clamps and the sleeve between the condenser 10HM2 and the check valve 15HM.
   (2) Remove the clamps and the sleeve between the condenser 11HM2 and the check valve 16HM duct flange.
   (3) Put the special blanking caps on the open end of the check valve 15HM and on the open end of the check valve 16HM duct flange.
NOTE: Use the removed clamps to secure the blanking caps.
   (4) Do a check for and make a note of any oil contamination in the condensors.
NOTE: Water condensation can occur in the condensers. This must be ignored.
   (5) If oil contamination is found in the condensers you must:
     (a) Remove the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-51-000-001).
     (b) Do a check for oil contamination in the interior of the mixer unit.
     (c) Cleaning of the Mixer Unit
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
       1 If oil contamination is found in the mixer unit you must remove it with a Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
     (d) Install the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-51-400-001).
   (6) Disconnect the electrical connectors at the cabin temperature sensors 21HK, 22HK and 23HK (Ref. AMM TASK 21-63-17-000-001).
   (7) Install the temperature simulation devices at the cabin temperature sensors 21HK, 22HK and 23HK.
   (8) Examine the heating trim-air line for contamination.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
     (a) Remove the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-000-001) and examine it for contamination.
       1 If there is no contamination, install the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-400-001).
       2 If there is a dust-like contamination:
         a Clean the trim-air pressure-regulating valve (14HK) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         b Install the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-400-001).
       3 If there is oil in the trim-air pressure-regulating valve (14HK):
         a Clean the trim-air pressure-regulating valve (14HK) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         b Remove the ducting downstream and check for oil-contamination.
         c Clean the ducting with a lint-free cloth Textile-Lint free Cotton - (Material No.14SBA1) and Aqueous Cleaner-Aircraft Exterior Pressure Spraying - (Material No.08ABC1) .
         d When dry install the ducting and the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-400-001).
   (9) On the AIR COND panel 30VU make sure that:
     (a) The COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are at the 12 o'clock position.
     (b) The X BLEED selector is at the AUTO position.
   (10) On the VENTILATION section of panel 22VU:
     (a) Push the CAB FANS pushbutton switch to the OFF position (the OFF legend comes on).
Subtask 21-00-00-869-054-C ** ON A/C NOT FOR ALL
K. Preparation for the Stage 1 Cleaning of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove the clamps and the sleeve between the condenser 10HM2 and the check valve 15HM.
   (2) Remove the clamps and the sleeve between the condenser 11HM2 and the check valve 16HM duct flange.
   (3) Put the special blanking caps on the open end of the check valve 15HM and on the open end of the check valve 16HM duct flange.
NOTE: Use the removed clamps to secure the blanking caps.
   (4) Do a check for and make a note of any oil contamination in the condensers.
NOTE: Water condensation can occur in the condensers. This must be ignored.
   (5) If oil contamination is found in the condensers you must:
     (a) Remove the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-51-000-001).
     (b) Do a check for oil contamination in the interior of the mixer unit.
     (c) Cleaning of the Mixer Unit
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
       1 If oil contamination is found in the mixer unit you must remove it with a Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
     (d) Install the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-51-400-001).
   (6) Disconnect the electrical connectors at the cabin temperature sensors 21HK, 22HK and 23HK (Ref. AMM TASK 21-63-17-000-001).
   (7) Install the temperature simulation devices at the cabin temperature sensors
   (8) Examine the cargo heating trim-air line for contamination.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
     (a) Remove the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-000-001) and examine it for contamination.
       1 If there is no contamination, install the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-400-001).
       2 If there is a dust-like contamination:
         a Clean the trim-air pressure-regulating valve (14HK) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         b Install the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-400-001).
         c On CARGO HEAT panel 22VU, make sure that the AFT temperature selector is set to HOT.
         d On AIR COND panel 30VU, make sure that the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are set to COLD.
       3 If there is oil in the trim-air pressure-regulating valve (14HK):
         a Clean the trim-air pressure-regulating valve (14HK) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         b Remove the ducting downstream and check for oil-contamination.
         c Clean the ducting with a lint-free cloth Textile-Lint free Cotton - (Material No.14SBA1) and Aqueous Cleaner-Aircraft Exterior Pressure Spraying - (Material No.08ABC1) .
         d When dry install the ducting and the trim-air pressure-regulating valve (14HK) (Ref. AMM TASK 21-63-52-400-001).
     (b) Remove the trim-air pressure-regulating valve (11HC) (Ref. AMM TASK 21-43-52-000-001) and examine it for contamination.
       1 If there is no contamination, install the trim-air pressure-regulating valve (11HC) (Ref. AMM TASK 21-43-52-400-001).
       2 If there is a dust-like contamination:
         a Clean the trim-air pressure-regulating valve (11HC) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         b Install the trim-air pressure-regulating valve (11HC) (Ref. AMM TASK 21-43-52-400-001).
         c Remove the trim-air valve (12HC) (Ref. AMM TASK 21-43-51-000-001).
         d Clean the trim-air valve (12HC) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         e Install the trim-air valve (12HC) (Ref. AMM TASK 21-43-52-400-001).
         f Operate the cargo-heating system for 15 minutes:
  • On CARGO HEAT panel 22VU, make sure that the AFT temperature selector is set to HOT.
  • On AIR COND panel 30VU, make sure that the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are set to COLD.
       3 If there is oil in the trim-air pressure-regulating valve (11HC):
         a Clean the trim-air pressure-regulating valve (11HC) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         b Remove the trim-air valve (12HC) (Ref. AMM TASK 21-43-51-400-001).
         c Clean the trim-air valve (12HC) with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
         d Remove the ducting downstream and check for oil-contamination.
         e Clean the ducting with a lint-free cloth Textile-Lint free Cotton - (Material No.14SBA1) and Aqueous Cleaner-Aircraft Exterior Pressure Spraying - (Material No.08ABC1) .
         f When dry install the trim-air pressure-regulating valve (11HC) (Ref. AMM TASK 21-43-52-400-001).
         g When dry install the ducting and the trim-air valve (12HC) (Ref. AMM TASK 21-43-51-400-001).
   (9) On the AIR COND panel 30VU make sure that:
     (a) The COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are at the 12 o'clock position.
     (b) The X BLEED selector is at the AUTO position.
   (10) On the VENTILATION section of panel 22VU:
     (a) Push the CAB FANS pushbutton switch to the OFF position (the OFF legend comes on).
Subtask 21-00-00-865-065-A
L. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
Subtask 21-00-00-860-062-B
M. Aircraft Maintenance Configuration
WARNING: MAKE SURE THAT THERE ARE NO PERSONS OR EQUIPMENT NEAR THE RAM AIR OUTLETS. HOT EXHAUST GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
CAUTION: MAKE SURE THAT THE AREA NEAR THE RAM AIR INLET IS CLEAN AND FREE FROM LOOSE ARTICLES. LOOSE ARTICLES CAN GO INTO THE RAM AIR INLET AND CAUSE DAMAGE TO EQUIPMENT.
   (1) Do the Procedure to Start the APU
NOTE: Wait at least 3 minutes after APU start before selecting APU Bleed.
   (2) At the ram air outlets:
     (a) Put warning notices in position to tell persons not to go near the ram air outlets.
Subtask 21-00-00-160-054-A ** ON A/C NOT FOR ALL
N. Stage 1 Cleaning of the ECS
WARNING: BE CAREFUL WHEN YOU DO THIS CLEANING PROCEDURE. A VERY STRONG HOT OR COLD AIRFLOW WILL OCCUR IN THE AREA OF THE PACK BAY. THIS AIRFLOW CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) On the ECAM control panel push the COND pushbutton switch.
   (2) Adjust the temperature simulating devices until on the ECAM lower DU the CKPT, the FWD cabin and the AFT cabin temperatures show 16 deg. C.
   (3) On the AIR COND panel 30VU make sure that:
     (a) The COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are at the 12 o'clock position.
     (b) The X BLEED selector is at the AUTO position.
   (4) On the CARGO HEAT panel 22VU push the CAB FANS pushbutton switch to the off position (the OFF legend comes on).
   (5) On the AIR COND panel 30VU:
     (a) Push the APU BLEED pushbutton switch to the on position (the ON legend comes on).
     (b) Push the PACK 1 and the PACK 2 pushbutton switches to the on position (the FAULT and the OFF legends show off).
     (c) After 3 minutes push the HOT AIR pushbutton switch to the off position (the OFF legend comes on).
     (d) Turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the HOT position.
   (6) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the pack temperatures.
   (7) To do this you must:
     (a) On the ECAM control panel push the BLEED pushbutton switch.
     (b) On the ECAM lower DU make sure that:
  • the pack compressor outlet temperature does not go above 230 deg. C (max.) and
  • the pack outlet temperature does not go above 85 deg. C (max).
NOTE: If the temperatures go above the max. you must stop the procedure and do the trouble shooting of the ECS (refer to TSM, chapter 21).
   (8) On the ECAM control panel push the COND pushbutton switch.
   (9) Adjust the temperature simulating devices until on the ECAM lower DU the CKPT, the FWD cabin and the AFT cabin temperatures show 30 deg. C.
   (10) On the AIR COND panel 30VU turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the COLD position.
   (11) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the pack temperatures as in work step 7 of this paragraph.
   (12) On the ECAM control panel push the COND pushbutton switch.
   (13) Adjust the temperature simulating devices until on the ECAM lower DU the CKPT, the FWD cabin and the AFT cabin temperatures show 16 deg. C.
   (14) On the AIR COND panel 30VU turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the HOT position.
   (15) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the pack temperatures as in work step 7 of this paragraph.
Subtask 21-00-00-160-054-B ** ON A/C NOT FOR ALL
N. Stage 1 Cleaning of the ECS
WARNING: BE CAREFUL WHEN YOU DO THIS CLEANING PROCEDURE. A VERY STRONG HOT OR COLD AIRFLOW WILL OCCUR IN THE AREA OF THE PACK BAY. THIS AIRFLOW CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) On the ECAM control panel push the COND pushbutton switch.
   (2) Adjust the temperature simulating devices until on the ECAM lower DU the CKPT, the FWD cabin and the AFT cabin temperatures show 16 deg. C.
   (3) On the AIR COND panel 30VU make sure that:
     (a) The COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are at the 12 o'clock position.
     (b) The X BLEED selector is at the AUTO position.
   (4) On the CARGO HEAT panel 22VU push the CAB FANS pushbutton switch to the off position (the OFF legend comes on).
   (5) On the AIR COND panel 30VU:
     (a) Push the APU BLEED pushbutton switch to the on position (the ON legend comes on).
     (b) Push the PACK 1 and the PACK 2 pushbutton switches to the on position (the FAULT and the OFF legends show off).
   (6) After 3 minutes:
     (a) On the CARGO HEAT panel 22VU and the AIR COND panel 30VU push the HOT AIR pushbutton switches to the off position (the OFF legends come on).
     (b) Turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the HOT position.
   (7) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the pack temperatures.
   (8) To do this you must:
     (a) On the ECAM control panel push the BLEED pushbutton switch.
     (b) On the ECAM lower DU make sure that:
  • the pack compressor outlet temperature does not go above 230 deg. C (max.) and
  • the pack outlet temperature does not go above 85 deg. C (max).
NOTE: If the temperatures go above max. you must stop the procedure and do the trouble shooting of the ECS (refer to TSM, chapter 21).
   (9) On the ECAM control panel push the COND pushbutton switch.
   (10) Adjust the temperature simulating devices until on the ECAM lower DU the CKPT, the FWD cabin and the AFT cabin temperatures show 30 deg. C.
   (11) On the AIR COND panel 30VU turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the COLD position.
   (12) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the pack temperatures as in work step 7 of this paragraph.
   (13) On the ECAM control panel push the COND pushbutton switch.
   (14) Adjust the temperature simulating devices until on the ECAM lower DU the CKPT, the FWD cabin and the AFT cabin temperatures show 16 deg. C.
   (15) On the AIR COND panel 30VU turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the HOT position.
   (16) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the pack temperatures as in work step 7 of this paragraph.
Subtask 21-00-00-860-063-A
O. Do the Procedure to Stop the APU
Subtask 21-00-00-865-066-A
P. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
Subtask 21-00-00-210-052-A
Q. Inspection of the ECS for Contamination
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Do a check by hand for oil contamination in the condensers 10HM2 and 11HM2.
   (2) If there is no oil contamination in the condensers then carry on with the preparation for and stage 2 cleaning of the ECS.
   (3) If you find oil contamination in the condensers then you must:
   (4) If you find large deposits of oil contamination in the condensers then you must also remove, overhaul or replace and install the air cycle machine:
     (a) To do an overhaul:
       1 Remove the air cycle machine (Ref. AMM TASK 21-52-21-000-001).
       2 To do an overhaul of the air cycle machine, send it to the workshop.
       3 Install the air cycle machine (Ref. AMM TASK 21-52-21-400-001), or
     (b) Replace the air cycle machine (Ref. AMM TASK 21-52-21-000-001) and (Ref. AMM TASK 21-52-21-400-001).
Subtask 21-00-00-869-055-A
R. Preparation for Stage 2 Cleaning of the ECS
   (1) Remove the special blanking caps from the check valve 15HM and from the check valve 16HM duct flange.
   (2) Install the sleeves and the clamps on the check valve 15HM and on the check valve 16HM duct flange (Ref. AMM TASK 21-52-43-400-001).
   (3) Install the sleeves and the clamps on the condensers 10HM2 and 11HM2 (Ref. AMM TASK 21-52-32-400-001).
Subtask 21-00-00-865-067-A
S. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
Subtask 21-00-00-860-064-A
T. Do the Procedure to Start the APU
NOTE: Wait at least 3 minutes after APU start before selecting APU Bleed
Subtask 21-00-00-160-055-E ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT THERE ARE NO PERSONS OR EQUIPMENT NEAR THE RAM AIR OUTLETS. HOT EXHAUST GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
CAUTION: MAKE SURE THAT THE AREA NEAR THE RAM AIR INLET IS CLEAN AND FREE FROM LOOSE ARTICLES. LOOSE ARTICLES CAN GO INTO THE RAM AIR INLET AND CAUSE DAMAGE TO EQUIPMENT.
U. Stage 2 Cleaning of the ECS
NOTE: You may get smoke and/or fumes when you do this cleaning task.
It is recommended that, when possible, one or more of the passenger/crew doors is open.
This will supply fresh air to the cabin and the cockpit area.
   (1) On the ECAM control panel push the COND pushbutton switch.
   (2) On the ECAM lower DU make sure that the CKPT, the FWD cabin and the AFT cabin temperatures show 16 deg. C.
NOTE: You can do this by adjustment of the applicable temperature simulating device.
   (3) On the AIR COND panel 30VU:
     (a) Push the APU BLEED pushbutton switch to the on position (the ON legend comes on).
     (b) Make sure that the PACK 1 and the PACK 2 pushbutton switches are in the on position (the FAULT and the OFF legends show off).
     (c) Push the HOT AIR pushbutton switch to the on position (the FAULT and the OFF legends are off).
     (d) Turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the HOT position.
   (4) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the duct inlet and the pack temperatures.
   (5) To do this you must:
     (a) On the ECAM control panel push the BLEED pushbutton switch.
     (b) On the ECAM lower DU make sure that:
  • the pack compressor outlet temperature does not go above 230 deg. C (max.) and
  • the pack outlet temperature does not go above 85 deg. C (max).
     (c) On the ECAM control panel push the COND pushbutton switch.
     (d) On the ECAM lower DU make sure that the duct inlet temperature is not more than 70 deg. C (max).
NOTE: If any of the temperatures go above max. you must stop the procedure and do the trouble shooting of the ECS (refer to TSM, chapter 21).
Subtask 21-00-00-160-055-G ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT THERE ARE NO PERSONS OR EQUIPMENT NEAR THE RAM AIR OUTLETS. HOT EXHAUST GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
CAUTION: MAKE SURE THAT THE AREA NEAR THE RAM AIR INLET IS CLEAN AND FREE FROM LOOSE ARTICLES. LOOSE ARTICLES CAN GO INTO THE RAM AIR INLET AND CAUSE DAMAGE TO EQUIPMENT.
U. Stage 2 Cleaning of the ECS
NOTE: You may get smoke and/or fumes when you do this cleaning task.
It is recommended that, when possible, one or more of the passenger/crew doors is open.
This will supply fresh air to the cabin and the cockpit area.
   (1) On the ECAM control panel push the COND pushbutton switch.
   (2) On the ECAM lower DU make sure that the CKPT, the FWD cabin and the AFT cabin temperatures show 16 deg. C.
NOTE: You can do this by adjustment of the applicable temperature simulating device.
   (3) On the CARGO HEAT panel 22VU push the HOT AIR pushbutton switch to the off position (the OFF legend comes on).
   (4) On the AIR COND panel 30VU:
     (a) Push the APU BLEED pushbutton switch to the on position (the ON legend comes on).
     (b) Make sure that the PACK 1 and the PACK 2 pushbutton switches are in the on position (the FAULT and the OFF legends show off).
     (c) Push the HOT AIR pushbutton switch to the on position (the FAULT and the OFF legends are off).
     (d) Turn the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors to the HOT position.
   (5) Wait for 15 minutes.
NOTE: During this 15 minute period you must constantly monitor the duct inlet and the pack temperatures.
   (6) To do this you must:
     (a) On the ECAM control panel push the BLEED pushbutton switch.
     (b) On the ECAM lower DU make sure that:
  • the pack compressor outlet temperature does not go above 230 deg. C (max.) and
  • the pack outlet temperature does not go above 85 deg. C (max).
     (c) On the ECAM control panel push the COND pushbutton switch.
     (d) On the ECAM lower DU make sure that the duct inlet temperature is not more than 70 deg. C (max).
NOTE: If any of the temperatures go above max. you must stop the procedure and do the trouble shooting of the ECS (refer to TSM, chapter 21).
Subtask 21-00-00-860-065-A
V. Aircraft Maintenance Configuration
   (1) Do the Procedure to Stop the APU
   (2) If there is smoke in the cockpit or cabin then you must do the decontamination procedure again.
   (3) If after 20 minutes, with the recirculation fans running, you can still smell the oil, you must replace the recirculation filters (Ref. AMM TASK 21-21-41-000-001) (Ref. AMM TASK 21-21-41-400-001).
   (4) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
Subtask 21-00-00-865-068-A
W. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/AFT CARGO/VENT/CTL & MONG31HNC07
** ON A/C NOT FOR ALL
49VUAIR COND/AFT CARGO/VENT & HTG/CTL & MONG31HNC07
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/AFT CARGO VENT/FAN30HNS22
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
Subtask 21-00-00-210-053-C ** ON A/C NOT FOR ALL
X. Post Cleaning and Inspection of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove, clean and install:
     (a) Clean water extractors 10HM8, 11HM8 and the water-extractor drain lines:
       1 Remove the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-000-001).
       2 To clean the water extractors send them to the workshop.
       3 Install the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-400-001).
     (b) Clean water injectors 20HM and 21HM:
       1 Remove the water injectors (Ref. AMM TASK 21-52-42-000-001).
       2 To clean the water injectors, send them to the workshop.
       3 Install the water injectors (Ref. AMM TASK 21-52-42-400-001).
   (2) Remove, overhaul or replace and install ozone filters 100HM and 101HM:
NOTE: Overhaul or replacement of the ozone filters 100HM and 101HM is only necessary if smell was reported during stage 2 cleaning of the ECS.
     (a) To do an overhaul:
       1 Remove the ozone filters (Ref. AMM TASK 21-51-41-000-001).
       2 To do an overhaul of the ozone filters, send them to the workshop.
       3 Install the ozone filter (Ref. AMM TASK 21-51-41-400-001), or
     (b) Replace the ozone filters (Ref. AMM TASK 21-51-41-000-001) and (Ref. AMM TASK 21-51-41-400-001).
   (3) Remove, overhaul or replace and install pack flow-control valves 8HB and 11HB:
NOTE: Overhaul or replacement of the Flow-Control Valves 8HB and 11HB is only necessary if the valves are oil contaminated from inside.
     (a) To do an overhaul:
       1 Remove the pack flow-control valves (Ref. AMM TASK 21-51-51-000-001).
       2 To do an overhaul of the pack flow-control valves, send them to the workshop.
       3 Install the pack flow-control valves (Ref. AMM TASK 21-51-51-400-001), or
     (b) Replace the pack flow-control valves (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
Subtask 21-00-00-210-053-D ** ON A/C NOT FOR ALL
X. Post Cleaning and Inspection of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove, clean and install:
     (a) Clean water extractors 10HM8, 11HM8 and the water-extractor drain lines:
       1 Remove the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-000-001).
       2 To clean the water extractors send them to the workshop.
       3 Install the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-400-001).
     (b) Clean water injectors 20HM and 21HM:
       1 Remove the water injectors (Ref. AMM TASK 21-52-42-000-001).
       2 To clean the water injectors, send them to the workshop.
       3 Install the water injectors (Ref. AMM TASK 21-52-42-400-001).
   (2) Remove, overhaul or replace and install ozone filters 100HM and 101HM:
NOTE: Overhaul or replacement of the ozone filters 100HM and 101HM is only necessary if smell was reported during stage 2 cleaning of the ECS.
     (a) To do an overhaul:
       1 Remove the ozone filters (Ref. AMM TASK 21-51-41-000-001).
       2 To do an overhaul of the ozone filters, send them to the workshop.
       3 Install the ozone filters (Ref. AMM TASK 21-51-41-400-001), or
     (b) Replace the ozone filters (Ref. AMM TASK 21-51-41-000-001) and (Ref. AMM TASK 21-51-41-400-001).
   (3) Remove, overhaul or replace and install pack flow-control valves 8HB and 11HB:
NOTE: Overhaul or replacement of the Flow-Control Valves 8HB and 11HB is only necessary if the valves are oil contaminated from inside.
     (a) To do an overhaul:
       1 Remove the pack flow-control valves (Ref. AMM TASK 21-51-51-000-001).
       2 To do an overhaul of the pack flow-control valves, send them to the workshop.
       3 Install the pack flow-control valves (Ref. AMM TASK 21-51-51-400-001), or
     (b) Replace the pack flow-control valves (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
Subtask 21-00-00-210-053-E ** ON A/C NOT FOR ALL
X. Post Cleaning and Inspection of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove, clean and install:
     (a) Clean water extractors 10HM8, 11HM8 and the water-extractor drain lines:
       1 Remove the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-000-001).
       2 To clean the water extractors send them to the workshop.
       3 Install the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-400-001).
     (b) Clean water injectors 20HM and 21HM:
       1 Remove the water injectors (Ref. AMM TASK 21-52-42-000-001).
       2 To clean the water injectors, send them to the workshop.
       3 Install the water injectors (Ref. AMM TASK 21-52-42-400-001).
   (2) Remove, overhaul or replace and install pack flow-control units 23HB and 24HB:
NOTE: Overhaul or replacement of the Flow-Control Units 23HB and 24HB is only necessary if the valves are oil contaminated from inside.
     (a) To do an overhaul:
       1 Remove the pack flow-control units (Ref. AMM TASK 21-51-51-000-001).
       2 To do an overhaul of the pack flow-control units, send them to the workshop.
       3 Install the pack flow-control units (Ref. AMM TASK 21-51-51-400-001), or
     (b) Replace the pack flow-control units (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
Subtask 21-00-00-210-053-G ** ON A/C NOT FOR ALL
X. Post Cleaning and Inspection of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove, clean and install:
     (a) Clean water extractors 10HM8, 11HM8 and the water-extractor drain lines:
       1 Remove the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-000-001).
       2 To clean the water extractors send them to the workshop.
       3 Install the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-400-001).
     (b) Clean water injectors 20HM and 21HM:
       1 Remove the water injectors (Ref. AMM TASK 21-52-42-000-001).
       2 To clean the water injectors, send them to the workshop.
       3 Install the water injectors (Ref. AMM TASK 21-52-42-400-001).
   (2) Remove, overhaul or replace and install ozone filters 100HM and 101HM:
NOTE: Overhaul or replacement of the ozone filters 100HM and 101HM is only necessary if smell was reported during stage 2 cleaning of the ECS.
     (a) To do an overhaul:
       1 Remove the ozone filters (Ref. AMM TASK 21-51-41-000-001).
       2 To do an overhaul of the ozone filters, send them to the workshop.
       3 Install the ozone filters (Ref. AMM TASK 21-51-41-400-001), or
     (b) Replace the ozone filters (Ref. AMM TASK 21-51-41-000-001) and (Ref. AMM TASK 21-51-41-400-001).
   (3) Remove, overhaul or replace and install pack flow-control units 23HB and 24HB:
NOTE: Overhaul or replacement of the Flow-Control Units 23HB and 24HB is only necessary if the valves are oil contaminated from inside.
     (a) To do an overhaul:
       1 Remove the pack flow-control units (Ref. AMM TASK 21-51-51-000-001).
       2 To do an overhaul of the pack flow-control units, send them to the workshop.
       3 Install the pack flow-control units (Ref. AMM TASK 21-51-51-400-001), or
     (b) Replace the pack flow-control units (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
Subtask 21-00-00-210-053-H ** ON A/C NOT FOR ALL
X. Post Cleaning and Inspection of the ECS
WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Remove, clean and install:
     (a) Clean water extractors 10HM8, 11HM8 and the water-extractor drain lines:
       1 Remove the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-000-001).
       2 To clean the water extractors send them to the workshop.
       3 Install the water extractors and the water-extractor drain lines (Ref. AMM TASK 21-52-16-400-001).
     (b) Clean water injectors 20HM and 21HM:
       1 Remove the water injectors (Ref. AMM TASK 21-52-42-000-001).
       2 To clean the water injectors, send them to the workshop.
       3 Install the water injectors (Ref. AMM TASK 21-52-42-400-001).
   (2) Remove, overhaul or replace and install ozone filters 100HM and 101HM:
NOTE: Overhaul or replacement of the ozone filters 100HM and 101HM is only necessary if smell was reported during stage 2 cleaning of the ECS.
     (a) To do an overhaul:
       1 Remove the ozone filters (Ref. AMM TASK 21-51-41-000-001).
       2 To do an overhaul of the ozone filters, send them to the workshop.
       3 Install the ozone filters (Ref. AMM TASK 21-51-41-400-001), or
     (b) Replace the ozone filters (Ref. AMM TASK 21-51-41-000-001) and (Ref. AMM TASK 21-51-41-400-001).
   (3) Remove, overhaul or replace and install pack flow-control units 23HB and 24HB:
NOTE: Overhaul or replacement of the Flow-Control Units 23HB and 24HB is only necessary if the valves are oil contaminated from inside.
     (a) To do an overhaul:
       1 Remove the pack flow-control units (Ref. AMM TASK 21-51-51-000-001).
       2 To do an overhaul of the pack flow-control units, send them to the workshop.
       3 Install the pack flow-control units (Ref. AMM TASK 21-51-51-400-001), or
     (b) Replace the pack flow-control units (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
Subtask 21-00-00-860-066-A
Y. Connection of the Temperature Sensors
   (1) Disconnect and remove the temperature simulating devices at the temperature sensors 21HK, 22HK and 23HK.
   (2) Connect the electrical connectors at the temperature sensors 21HK, 22HK and 23HK (Ref. AMM TASK 21-63-17-400-001).
Subtask 21-00-00-865-088-A
Z. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/AFT CARGO/VENT/CTL & MONG31HNC07
** ON A/C NOT FOR ALL
49VUAIR COND/AFT CARGO/VENT & HTG/CTL & MONG31HNC07
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/ZONE TEMP CTL/28VDC/SYS24HKV20
122VUAIR COND/ZONE TEMP CTL/28VDC/SYS13HKV19
122VUAIR COND/ZONE TEMP CTL/115VAC/SYS22HKV18
122VUAIR COND/ZONE TEMP CTL/115VAC/SYS11HKV17
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/AFT CARGO VENT/FAN30HNS22
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
Subtask 21-00-00-710-051-A ** ON A/C NOT FOR ALL
AA. Checks and Test of the ECS
   (1) Do the pre-conditioning with the APU or through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001).
   (2) Do a leak check of:
     (a) All the air pack and the air pack component connections at each of the air packs.
     (b) The mixer unit and the recirculation fan connections.
     (c) Any reconnected bleed-air duct connections.
   (3) Do the operational test of the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-00-710-001).
   (4) Do the operational test of the cockpit and cabin temperature control (Ref. AMM TASK 21-63-00-710-004).
   (5) Stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001).
Subtask 21-00-00-710-051-B ** ON A/C NOT FOR ALL
AA. Checks and Test of the ECS
   (1) Do the pre-conditioning with the APU or through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001).
   (2) Do a leak check of:
     (a) All the air pack and the air pack component connections at each of the air packs.
     (b) The mixer unit and the recirculation fan connections.
     (c) Any reconnected bleed-air duct connections.
   (3) Do the operational test of the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-00-710-001).
   (4) Do the operational test of the AFT cargo-compartment heating system (Ref. AMM TASK 21-43-00-710-003).
   (5) Do the operational test of the cockpit and cabin temperature control (Ref. AMM TASK 21-63-00-710-004).
   (6) Stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001).
5. Close-up
Subtask 21-00-00-410-051-A
A. Close access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access panels 191BB, 192FB, 191KB and 192KB (Ref. AMM TASK 53-35-13-400-002).
   (3) Remove the WARNING NOTICE(S).
Subtask 21-00-00-862-051-A
B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
[Rev.9 from 2019] 2026.04.02 06:10:52 UTC
"WTRUIB" 2025