W DOC AIRBUS | AMM A320F

Cleaning of the Toilet Waste Lines with High Pressure Equipment VACLAV 2

TASK 38-31-00-100-015-A
Cleaning of the Toilet Waste Lines with High Pressure Equipment VACLAV 2

WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
NOTE: Tasks 38-31-00-100-004, 38-31-00-100-019, 38-31-00-100-803 and 38-31-00-100-804 are alternative and interchangeable cleaning procedures to task 38-31-00-100-015.
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
1
BORESCOPE DIA 25 MM (1 IN) - FLEXIBLE
No specific
1
BRUSH - BRISTLED
No specific
AR
CLEANING EQUIPMENT VACLAV - TANK, INTERN
No specific
2
PLUG - BLANKING
10801039
AR
TOOL-WASTELINE,CLEAN
10801040
AR
TOOL-WASTELINE,CLEAN
10801041
AR
TOOL-WASTELINE,CLEAN
10801042
AR
TOOL-WASTELINE,CLEAN
10801043
AR
TOOL-WASTELINE,CLEAN
10801044
AR
TOOL-WASTELINE,CLEAN
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.11AKB1)
Disinfectant-Potable Water System Hypochlorite -
(Material No.11CBA1)
Disinfectant and cleaner-Aircraft general - -
(Material No.11GCA1)
Deodorant-Aircraft Toilets - -
No specific
clean water
No specific
water
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
161DW, 162DW
151AW, 151BW, 151CW, 151DW
131MW, 131NW, 131PW
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
13
O-RINGS
AIPC 38-31-02-01-040
16
O-RINGS
AIPC 38-31-02-01-040
13
O-RINGS
AIPC 38-31-82-01-030
16
O-RINGS
AIPC 38-31-82-01-030
13
O-RINGS
AIPC 38-31-83-01-107
16
O-RINGS
AIPC 38-31-83-01-107
 E. Referenced Information
REFERENCE
DESIGNATION
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 25-45-22-000-001-A
Removal of the Toilet Shroud and the Seat
TASK 25-45-22-000-802-A
Removal of the Toilet Shroud of the Space Flex Lavatory
TASK 25-45-22-400-001-A
Installation of the Toilet Shroud and the Seat
TASK 25-45-22-400-802-A
Installation of the Toilet Shroud of the Space Flex Lavatory
TASK 25-54-12-000-001-A
Removal of the Forward Cargo-Compartment Partition
TASK 25-54-12-000-003-A
Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-001-A
Installation of the Forward Cargo-Compartment Partition
TASK 25-54-12-400-003-A
Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-55-11-000-001-A
Removal of the Aft Cargo-Compartment Partition at FR47
TASK 25-55-11-000-003-A
Removal of the Sidewall Panels in the Aft Cargo Compartment - FR47/FR59
TASK 25-55-11-400-001-A
Installation of the Aft Cargo-Compartment Partition at FR47
TASK 25-55-11-400-003-A
Installation of the Sidewall Panels in the Aft Cargo Compartment - FR47/FR59
TASK 25-55-12-000-001-A
Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-001-A
Installation of the Aft Cargo-Compartment Partition at FR65
TASK 38-31-00-680-001-A
Draining of the Toilet System
TASK 38-31-00-710-009-A
Operational Test of the Toilet Unit
TASK 38-31-00-790-002-A
Leak Test of the Vacuum Toilet System (VTS)
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A
Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A
Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 53-43-11-000-001-A
Removal of the Support Strut
TASK 53-43-11-400-001-A
Installation of the Support Strut
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Waste-Line Condition Schematic
F VACLAV 2 Schematic
F Shell Clamp Installation-Requirements
3. Job Set-up
Subtask 38-31-00-160-050-A
A. Cleaning Equipment
   (1) Use the CLEANING EQUIPMENT VACLAV - TANK, INTERN to clean the waste lines.
NOTE: As an equivalent, use the cleaning equipment:
The cleaning equipment is connected to an applicable power supply. Refer to the GSE manufacturer's instruction.
     (a) The high-pressure cleaning equipment (VACLAV 2) has a high pressure and a vacuum source.
       1 The high pressure source has:
  • A high-pressure water pump with a working pressure of 400 bar (5801.5080 psi) and a flow rate of 17 l.min (4.4909 USgal.mn)
  • A high-pressure hose, 10 mm (0.3937 in.) dia. and 50 m (164.05 ft.) long.
       2 The vacuum source has:
  • A high-pressure water pump with a working pressure of 200 bar (2900.7540 psi). This pump operates a venturi injector to make a vacuum between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
     (b) Other related components of the cleaning equipment (VACLAV 2) are:
  • A suction and pressure adapter
  • A vacuum hose
  • A restrictor hose assembly
  • A self-propelling spray nozzle.
       1 The spray nozzle has:
  • 8 sapphire-tip nozzles ( 0.3 mm (0.0118 in.) dia.) which point at an angle of 15 degrees to the rear
  • 2 driving nozzles ( 0.5 mm (0.0197 in.) dia.) to push the spray nozzle forward (which also point to the rear).
Subtask 38-31-00-861-080-A
B. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 38-31-00-865-126-A
C. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACUUM-SYS35MGA06
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACUUM-GEN33MGA08
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-E34MGA04
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-D39MGA03
** ON A/C ALL
2001VUVACU TOIL SYS-LAV PWR-A32MGA01
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACU-SYS35MGA06
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-VACU-GEN33MGA08
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-G34MGA04
2001VUVACU TOIL SYS-LAV PWR-F39MGA03
2001VUVACU TOIL SYS-LAV PWR-D45MGA02
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-L45MGA02
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-L23MGA05
** ON A/C NOT FOR ALL
2001VUVACU TOIL SYS-LAV PWR-M34MGA04
Subtask 38-31-00-010-097-A ** ON A/C NOT FOR ALL
D. Get Access
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
   (1) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the aft cargo-compartment door.
   (3) Set cargo-compartment light switch 8LU to the ON position.
   (4) Remove sidewall panels 151CW and 151DW (Ref. AMM TASK 25-55-11-000-003).
   (5) Remove partitions 151BW and 151AW (Ref. AMM TASK 25-55-11-000-001).
   (6) Remove partitions 161DW and 162DW (Ref. AMM TASK 25-55-12-000-001).
   (7) Remove the center support strut at FR65 (Ref. AMM TASK 53-43-11-000-001).
Subtask 38-31-00-010-097-B ** ON A/C NOT FOR ALL
D. Get Access
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
   (1) Open the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the forward cargo-compartment door.
   (3) Set cargo-compartment light switch 6LU to the ON position.
   (4) Remove sidewall panel 131MW (Ref. AMM TASK 25-54-12-000-003).
   (5) Remove partitions 131NW and 131PW (Ref. AMM TASK 25-54-12-000-001).
   (6) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
   (7) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the aft cargo-compartment door.
   (8) Set cargo-compartment light switch 8LU to the ON position.
   (9) Remove partitions 161DW and 162DW (Ref. AMM TASK 25-55-12-000-001).
   (10) Remove the center support strut at FR65 (Ref. AMM TASK 53-43-11-000-001).
Subtask 38-31-00-860-072-A
E. Preparation of the Waste System
   (1) Disinfect the toilet assemblies:
     (a) Put 4.5 l (1.1888 USgal) of Deodorant-Aircraft Toilets - - (Material No.11GCA1) in each toilet assembly on the right and left side of the aircraft.
     (b) Flush the toilet assemblies.
     (c) Apply Disinfectant and cleaner-Aircraft general - - (Material No.11CBA1) to the toilet bowl, the flush valves and other possible dirty areas.
NOTE: If a toilet waste line is blocked, it is necessary to remove and clean the line before you can continue with this procedure.
   (2) Drain the waste holding tanks (Ref. AMM TASK 38-31-00-680-001).
Subtask 38-31-00-290-050-A ** ON A/C NOT FOR ALL
F. Internal Inspection of the Waste Lines
F Waste-Line Condition Schematic ** ON A/C NOT FOR ALL
NOTE: It is not necessary to examine the full length of the piping system. It is necessary to do the inspection only on the bends in the piping system.
   (1) For the internal inspection of the waste lines:
     (a) Disconnect the forward toilet waste-line (6) from the toilet waste line (5) in the aft cargo compartment:
       1 Remove the coupler clamp (14).
       2 Remove the sleeve (15).
       3 Remove and discard the O-rings (13).
     (b) Disconnect the aft toilet waste-line (11) from the toilet waste line (12) in the bulk cargo compartment:
       1 Remove the coupler clamp (14).
       2 Remove the sleeve (15).
       3 Remove and discard the O-rings (13).
     (c) Remove the short waste line (1) at the waste-tank inlet port:
       1 Remove the coupler clamps (17).
       2 Remove the sleeves (18).
       3 Remove and discard the O-rings (16).
       4 Remove the short waste line (1).
     (d) Remove the short waste line (2) at the waste-tank inlet port:
       1 Remove the coupler clamps (17).
       2 Remove the sleeves (18).
       3 Remove and discard the O-rings (16).
       4 Remove the short waste line (2).
   (2) Use a BORESCOPE DIA 25 MM (1 IN) - FLEXIBLE and do the inspection of the waste lines.
   (3) If the contamination is as shown in condition 1 to 5, it is not necessary to clean.
   (4) Clean the short waste lines (1) and (2) as follows:
     (a) Prepare a solution of Disinfectant-Potable Water System Hypochlorite - (Material No.11AKB1) and water as given in the table.
Disinfectant
Water
Strength of solution
Sodium Hypochlorite 500 ml
5 l
10%
     (b) Put the short waste lines (1) and (2) in an applicable container with the solution and let them stay for 4 hours.
     (c) After 4 hours, remove the short waste lines (1) and (2) from the container.
     (d) If necessary, clean the short waste lines (1) and (2) with a BRUSH - BRISTLED.
     (e) Flush the short waste lines (1) and (2) with clean water.
   (5) Prepare the toilet assemblies:
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
     (a) Remove the toilet shroud (Ref. AMM TASK 25-45-22-000-001) (Ref. AMM D/O 25-45-22-00).
     (b) Close the water shutoff valves in the lavatories.
   (6) Put the PLUG - BLANKING in each disconnected line end.
Subtask 38-31-00-290-050-B ** ON A/C NOT FOR ALL
F. Internal Inspection of the Waste Lines
F Waste-Line Condition Schematic ** ON A/C NOT FOR ALL
NOTE: It is not necessary to examine the full length of the piping system. It is necessary to do the inspection only on the bends in the piping system.
   (1) For the internal inspection of the waste lines:
     (a) Disconnect the forward toilet waste-line (6) from the toilet waste line (5) in the forward cargo compartment:
       1 Remove the coupler clamp (14).
       2 Remove the sleeve (15).
       3 Remove and discard the O-rings (13).
       4 Remove the screw (21), the washer (20) and the clamp (19).
       5 Loosen the screw (23), the washer (22) and the clamp (24).
       6 Rotate the pipe (6) a quarter of a turn clockwise.
     (b) Disconnect the aft toilet waste-line (11) from the toilet waste line (12) in the bulk cargo compartment:
       1 Remove the coupler clamp (14).
       2 Remove the sleeve (15).
       3 Remove and discard the O-rings (13).
     (c) Remove the short waste line (1) at the waste-tank inlet port:
       1 Remove the coupler clamps (17).
       2 Remove the sleeves (18).
       3 Remove and discard the O-rings (16).
       4 Remove the short waste line (1) from the waste line pipes (9) and (10).
     (d) Remove the short waste line (2) at the waste-tank inlet port:
       1 Remove the coupler clamps (17).
       2 Remove the sleeves (18).
       3 Remove and discard the O-rings (16).
       4 Remove the short waste line (2) from the waste line pipes (9) and (10).
   (2) Use a BORESCOPE DIA 25 MM (1 IN) - FLEXIBLE and do the inspection of the waste lines.
   (3) If the contamination is as shown in condition 1 to 5, it is not necessary to clean.
   (4) Clean the short waste lines (1) and (2) as follows:
     (a) Prepare a solution of Disinfectant-Potable Water System Hypochlorite - (Material No.11AKB1) and water as given in the table.
Disinfectant
Water
Strength of solution
Sodium Hypochlorite 500 ml
5 l
10%
     (b) Put the short waste lines (1) and (2) in an applicable container with the solution and let them stay for 4 hours.
     (c) After 4 hours, remove the short waste lines (1) and (2) from the container.
     (d) If necessary, clean the short waste lines (1) and (2) with a BRUSH - BRISTLED.
     (e) Flush the short waste lines (1) and (2) with clean water.
   (5) Prepare the toilet assemblies:
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
     (a) Remove the toilet shroud (Ref. AMM TASK 25-45-22-000-001) (Ref. AMM TASK 25-45-22-000-802).
     (b) Close the water shutoff valves in the lavatories.
   (6) Put the PLUG - BLANKING in each disconnected line end.
4. Procedure
Subtask 38-31-00-110-053-A ** ON A/C NOT FOR ALL
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
CAUTION: MAKE SURE THAT THE WATER TEMPERATURE IS NOT HIGHER THAN 60 DEG.C (140.00 DEG.F). IF IT IS HIGHER, IT CAN CAUSE DAMAGE TO THE COMPONENTS.
CAUTION: BEFORE YOU START THE PROCEDURE, PUT BLANKING PLUGS ON ALL THE OPENINGS OF THE WASTE LINES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF LEAKAGE. THIS CAN CAUSE A CONTAMINATION IN THE WORK AREA.
A. Cleaning of the Forward Toilet Waste-Line
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F VACLAV 2 Schematic ** ON A/C NOT FOR ALL
NOTE: It is necessary to start the procedure from the aft cargo compartment.
   (1) Disconnection of the waste line (3) from the toilet assembly (4) in the forward lavatory:
     (a) Remove the coupler clamp (14).
     (b) Remove the sleeve (15).
     (c) Remove and discard the O-rings (13).
NOTE: It is not necessary to disconnect the electrical connectors for this procedure.
   (2) Put the CLEANING EQUIPMENT VACLAV - TANK, INTERN in position below the aft cargo-compartment door.
   (3) Clean the forward toilet waste-line (6):
     (a) Preparation of the high pressure cleaner and the vacuum pump:
       1 Remove the PLUG - BLANKING from the forward toilet waste-line (6).
       2 Install the suction and pressure adapter on the forward toilet waste-line (6) in the forward cargo compartment.
       3 Install the restrictor hose assembly on the toilet waste-line (3) and the toilet assembly (4) in the forward lavatory.
       4 Attach the suction hose of the high pressure cleaner to the suction and pressure adapter.
       5 Attach the high pressure hose of the high pressure cleaner to the spray nozzle of the suction and pressure adapter.
       6 Set the main switch of the vacuum service vehicle and the high pressure pump to the REMOTE position.
       7 Operation of the high-pressure cleaning equipment:
         a Let the vacuum pressure increase until it is between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
         b Operate the high-pressure water pump at a maximum pressure of 400 bar (5801.5080 psi).
     (b) Slowly push the high-pressure hose assembly at a rate of approximately 1 m/min into the forward toilet waste-line (6). Stop when it is near the restrictor hose.
     (c) Stop the high-pressure water pump.
     (d) While the vacuum source continues to operate, slowly retract the high pressure hose from the forward waste-line.
     (e) Stop the vacuum source.
   (4) Do a borescope inspection of the forward toilet waste-line (6) given in para 3.F.
   (5) If the borescope inspection shows that the procedure did not give a satisfactory result, do it again.
Subtask 38-31-00-110-053-B ** ON A/C NOT FOR ALL
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
CAUTION: MAKE SURE THAT THE WATER TEMPERATURE IS NOT HIGHER THAN 60 DEG.C (140.00 DEG.F). IF IT IS HIGHER, IT CAN CAUSE DAMAGE TO THE COMPONENTS.
CAUTION: BEFORE YOU START THE PROCEDURE, PUT BLANKING PLUGS ON ALL THE OPENINGS OF THE WASTE LINES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF LEAKAGE. THIS CAN CAUSE A CONTAMINATION IN THE WORK AREA.
A. Cleaning of the Forward Toilet Waste-Line
F VACLAV 2 Schematic ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
NOTE: It is necessary to start the procedure from the forward cargo compartment.
   (1) Disconnection of the waste line (3) from the toilet assembly (4) in the forward lavatory:
     (a) Remove the coupler clamp (14)
     (b) Remove the sleeve (15).
     (c) Remove and discard the O-rings (13).
NOTE: It is not necessary to disconnect the electrical connectors for this procedure.
   (2) Put the CLEANING EQUIPMENT VACLAV - TANK, INTERN in position below the aft cargo-compartment door.
   (3) Clean the forward toilet waste-line (6):
     (a) Preparation of the high pressure cleaner and the vacuum pump:
       1 Remove the PLUG - BLANKING from the forward toilet waste-line (6).
       2 Install the suction and pressure adapter on the forward toilet waste-line (6) in the forward cargo compartment.
       3 Install the restrictor hose assembly on the toilet waste-line (3) and the toilet assembly (4) in the forward lavatory.
       4 Attach the suction hose of the high pressure cleaner to the suction and pressure adapter.
       5 Attach the high pressure hose of the high pressure cleaner to the spray nozzle of the suction and pressure adapter.
       6 Set the main switch of the vacuum service vehicle and the high pressure pump to the REMOTE position.
       7 Operation of the high-pressure cleaning equipment:
         a Let the vacuum pressure increase until it is between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
         b Operate the high-pressure water pump at a maximum pressure of 400 bar (5801.5080 psi).
     (b) Slowly push the high-pressure hose assembly at a rate of approximately 1 m/min into the forward toilet waste-line (6). Stop when it is near the restrictor hose.
     (c) Stop the high-pressure water pump.
     (d) While the vacuum source continues to operate, slowly retract the high pressure hose from the forward waste-line (6).
     (e) Stop the vacuum source.
   (4) Do a borescope inspection of the forward toilet waste-line (6) given in para 3.F.
   (5) If the borescope inspection shows that the procedure did not give a satisfactory result, do it again.
Subtask 38-31-00-410-099-A
B. Aircraft Maintenance Configuration
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Shell Clamp Installation-Requirements
   (1) When the forward toilet waste-line (6) is clean:
     (a) Remove the suction and pressure adapter from the forward toilet waste-line (6).
     (b) Remove the restrictor hose assembly from the toilet waste line (6) and the toilet assembly (4).
     (c) Connect the toilet waste-line (3) to the toilet assembly (4):
       1 Install new AIPC 38-31-02-01-040 O-RINGS (13)AIPC 38-31-82-01-030 O-RINGS (13)AIPC 38-31-83-01-107 O-RINGS (13) on the pipes (3) and (4).
       2 Install the sleeve (15).
       3 Install the coupler clamp (14).
       4 Make sure that the coupler clamp (10) is installed correctly:
         a Axial adjustment is not more than 6.35 mm (0.25 in.).
         b Angular misalignment is not more than +/- 4 degree in any direction around centerline.
     (d) Put a PLUG - BLANKING on the forward toilet waste-line (6).
Subtask 38-31-00-110-055-A ** ON A/C NOT FOR ALL
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
CAUTION: MAKE SURE THAT THE WATER TEMPERATURE IS NOT HIGHER THAN 60 DEG.C (140.00 DEG.F). IF IT IS HIGHER, IT CAN CAUSE DAMAGE TO THE COMPONENTS.
CAUTION: BEFORE YOU START THE PROCEDURE, PUT BLANKING PLUGS ON ALL THE OPENINGS OF THE WASTE LINES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF LEAKAGE. THIS CAN CAUSE A CONTAMINATION IN THE WORK AREA.
C. Cleaning of the Toilet Waste Line in the Direction of the Waste Tank
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F VACLAV 2 Schematic ** ON A/C NOT FOR ALL
NOTE: It is necessary to start the procedure from the aft cargo compartment.
   (1) Remove the PLUG - BLANKING from the toilet waste-lines (5) and (10) and the waste-tank inlet port (9).
NOTE: It is not necessary to disconnect the electrical connectors for this procedure.
   (2) Clean the toilet waste line (5) in the direction of the waste tank:
     (a) Preparation of the high pressure cleaner and the vacuum pump:
       1 Install the suction and pressure adapter on the toilet waste line (5) in the aft cargo compartment.
       2 Install the restrictor hose assembly between the toilet waste line (10) and the waste-tank inlet port (9).
       3 Attach the suction hose of the high pressure cleaner to the suction and pressure adapter.
       4 Attach the high pressure hose of the high pressure cleaner to the spray nozzle of the suction and pressure adapter.
       5 Set the main switch of the vacuum service vehicle and the high pressure pump to the REMOTE position.
       6 Operation of the high-pressure cleaning equipment:
         a Let the vacuum pressure increase until it is between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
         b Operate the high-pressure water pump at a maximum pressure of 400 bar (5801.5080 psi).
     (b) Slowly push the high-pressure hose assembly at a rate of approximately 1 m/min into the toilet waste line (5). Stop when it is near the restrictor hose.
     (c) Stop the high-pressure water pump.
     (d) While the vacuum source continues to operate, slowly retract the high pressure hose from the toilet waste line (5).
     (e) Stop the vacuum source.
   (3) Do a borescope inspection of the toilet waste line (5) given in para 3.F.
   (4) If the borescope inspection shows that the procedure did not give a satisfactory result, do it again.
Subtask 38-31-00-410-104-A ** ON A/C NOT FOR ALL
D. Aircraft Maintenance Configuration
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Shell Clamp Installation-Requirements ** ON A/C NOT FOR ALL
   (1) When the toilet waste line (5) to the waste tank is clean:
     (a) Remove the suction and the pressure adapters from the the waste line (5).
     (b) Remove the restrictor hose assembly from the waste line (10) and the waste-tank inlet port (9).
     (c) Install the short waste line (2).
       1 Put the pipe (2) in its installation position between the waste line (10) and the waste-tank inlet port (9).
       2 Install the new AIPC 38-31-02-01-040 O-RINGS (16)AIPC 38-31-83-01-107 O-RINGS (16)AIPC 38-31-82-01-030 O-RINGS (16).
       3 Install the sleeves (18).
       4 Install the coupler clamps (17).
       5 Make sure that the coupler clamps (17) are installed correctly:
  • Axial adjustment is not more than 6.35 mm (0.25 in.).
  • Angular misalignment is not more than +/- 4 degree in any direction around centerline.
     (d) In the aft cargo compartment, connect the forward toilet waste-line (6) to the toilet waste line (5):
       1 Remove the PLUG - BLANKING from the forward toilet waste-line (6).
       2 Install the new AIPC 38-31-02-01-040 O-RINGS (13)AIPC 38-31-83-01-107 O-RINGS (13)AIPC 38-31-82-01-030 O-RINGS (13).
       3 Install the sleeve (15).
       4 Install the coupler clamp (14).
       5 Make sure that the coupler clamp (14) is installed correctly:
         a Axial adjustment is not more than 6.35 mm (0.25 in.).
         b Angular misalignment is not more than +/- 4 degree in any direction around centerline.
Subtask 38-31-00-110-055-B ** ON A/C NOT FOR ALL
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
CAUTION: MAKE SURE THAT THE WATER TEMPERATURE IS NOT HIGHER THAN 60 DEG.C (140.00 DEG.F). IF IT IS HIGHER, IT CAN CAUSE DAMAGE TO THE COMPONENTS.
CAUTION: BEFORE YOU START THE PROCEDURE, PUT BLANKING PLUGS ON ALL THE OPENINGS OF THE WASTE LINES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF LEAKAGE. THIS CAN CAUSE A CONTAMINATION IN THE WORK AREA.
E. Cleaning of the Toilet Waste-Line in the Direction of the Waste Tank
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F VACLAV 2 Schematic ** ON A/C NOT FOR ALL
NOTE: It is necessary to start the procedure from the forward cargo compartment.
   (1) Remove the PLUG - BLANKING from the toilet waste-lines (5) and (10) and the waste-tank inlet port (9).
NOTE: It is not necessary to disconnect the electrical connectors for this procedure.
   (2) Clean the toilet waste line (5) in the direction of the waste tank:
     (a) Preparation of the high pressure cleaner and the vacuum pump:
       1 Install the suction and pressure adapter on the toilet waste line (5) in the forward cargo compartment.
       2 Install the restrictor hose assembly between the toilet waste line (10) and the waste inlet port (9).
       3 Attach the suction hose of the high pressure cleaner to the suction and pressure adapter.
       4 Attach the high pressure hose of the high pressure cleaner to the spray nozzle of the suction and pressure adapter.
       5 Set the main switch of the vacuum service vehicle and the high pressure pump to the REMOTE position.
       6 Operation of the high-pressure cleaning equipment:
         a Let the vacuum pressure increase until it is between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
         b Operate the high-pressure water pump at a maximum pressure of 400 bar (5801.5080 psi).
     (b) Slowly push the high-pressure hose assembly at a rate of approximately 1 m/min into the toilet waste line (5). Stop when it is near the restrictor hose.
     (c) Stop the high-pressure water pump.
     (d) While the vacuum source continues to operate, slowly retract the high pressure hose from the toilet waste line (5).
     (e) Stop the vacuum source.
   (3) Do a borescope inspection of the toilet waste line (5) given in para 3.F.
   (4) If the borescope inspection shows that the procedure did not give a satisfactory result, do it again.
Subtask 38-31-00-410-104-B ** ON A/C NOT FOR ALL
F. Aircraft Maintenance Configuration
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Shell Clamp Installation-Requirements ** ON A/C NOT FOR ALL
   (1) When the toilet waste line (5) to the waste tank is clean:
     (a) Remove the suction and pressure adapter from the the waste line (5).
     (b) Remove the restrictor hose assembly from the waste line (10) and the waste-tank inlet port (9).
     (c) Install the short waste line (2) at the waste tank inlet port:
       1 Put the pipe (2) in its installation position between the waste line (10) and the waste-tank inlet port (9).
       2 Install the new AIPC 38-31-02-01-040 O-RINGS (16)AIPC 38-31-83-01-107 O-RINGS (16)AIPC 38-31-82-01-030 O-RINGS (16).
       3 Install the sleeves (18).
       4 Install the coupler clamps (17).
       5 Make sure that the coupler clamps (17) are installed correctly:
  • Axial adjustment is not more than 6.35 mm (0.25 in.).
  • Angular misalignment is not more than +/- 4 degree in any direction around centerline.
     (d) In the forward cargo compartment, connect the forward toilet waste-line (6) to the toilet waste line (5):
       1 Remove the PLUG - BLANKING from the forward toilet waste-line (6).
       2 Put the forward toilet waste-line (6) and the toilet waste-line (5) in position.
       3 Install the clamp (19) with the washer (20) and the screw (21).
       4 Tighten the screw (21).
       5 Install the clamp (24) with the washer (22) and Tightening of the screw (23).
       6 Install the new AIPC 38-31-02-01-040 O-RINGS (13)AIPC 38-31-83-01-107 O-RINGS (13)AIPC 38-31-82-01-030 O-RINGS (13).
       7 Install the sleeve (15).
       8 Install the coupler clamp (14).
       9 Make sure that the coupler clamp (14) is installed correctly:
         a Axial adjustment is not more than 6.35 mm (0.25 in.).
         b Angular misalignment is not more than +/- 4 degree in any direction around centerline.
Subtask 38-31-00-110-056-A
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
CAUTION: MAKE SURE THAT THE WATER TEMPERATURE IS NOT HIGHER THAN 60 DEG.C (140.00 DEG.F). IF IT IS HIGHER, IT CAN CAUSE DAMAGE TO THE COMPONENTS.
CAUTION: BEFORE YOU START THE PROCEDURE, PUT BLANKING PLUGS ON ALL THE OPENINGS OF THE WASTE LINES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF LEAKAGE. THIS CAN CAUSE A CONTAMINATION IN THE WORK AREA.
G. Cleaning of the Aft Toilet Waste-Line
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F VACLAV 2 Schematic
NOTE: It is necessary to start the procedure from the bulk cargo compartment.
   (1) Disconnect the toilet waste line (3) from the toilet assembly (4) in the aft lavatory:
     (a) Remove the coupler clamp (14).
     (b) Remove the sleeve (15).
     (c) Remove and discard the O-rings (13).
NOTE: It is not necessary to disconnect the electrical connectors for this procedure.
   (2) Put the CLEANING EQUIPMENT VACLAV - TANK, INTERN in position below the bulk cargo-compartment door.
   (3) Clean the aft toilet waste-line (12):
     (a) Preparation of the high pressure cleaner and the vacuum pump:
       1 Remove the PLUG - BLANKING from the aft toilet waste-line (12).
       2 Install the suction and pressure adapter on the aft toilet waste-line (12) in the bulk cargo compartment.
       3 Install the restrictor hose assembly on the waste line (3) and the toilet assembly (4) in the aft lavatory.
       4 Attach the suction hose of the high pressure cleaner to the suction and pressure adapter.
       5 Attach the high pressure hose of the high pressure cleaner to the spray nozzle of the suction and pressure adapter.
       6 Set the main switch of the vacuum service vehicle and the high pressure pump to the REMOTE position.
       7 Operation of the high-pressure cleaning equipment:
         a Let the vacuum pressure increase until it is between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
         b Operate the high-pressure water pump at a maximum pressure of 400 bar (5801.5080 psi).
     (b) Slowly push the high-pressure hose assembly at a rate of approximately 1 m/min into the aft toilet waste-line (12). Stop when it is near the restrictor hose.
     (c) Stop the high-pressure water pump.
     (d) While the vacuum source continues to operate, slowly retract the high pressure hose from the aft toilet waste-line (12).
     (e) Stop the vacuum source.
   (4) Do a borescope inspection of the aft toilet waste-line (12) given in para 3.F.
   (5) If the borescope inspection shows that the procedure did not give satisfactory result, do it again.
Subtask 38-31-00-410-105-A
H. Aircraft Maintenance Configuration
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Shell Clamp Installation-Requirements
   (1) When the aft toilet waste-line (12) is clean:
     (a) Remove the suction and pressure adapter from the waste line (12).
     (b) Remove the restrictor hose assembly from the toilet waste line (3) and the toilet assembly (4).
     (c) Connect the toilet waste line (3) to the aft toilet assembly (4):
       1 Install the new AIPC 38-31-02-01-040 O-RINGS (13)AIPC 38-31-83-01-107 O-RINGS (13)AIPC 38-31-82-01-030 O-RINGS (13).
       2 Install the sleeve (15).
       3 Install the coupler clamp (14).
       4 Make sure that the coupler clamp (14) is installed correctly:
         a Axial adjustment is not more than 6.35 mm (0.25 in.).
         b Angular misalignment is not more than +/- 4 degree in any direction around centerline.
Subtask 38-31-00-110-057-A
WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
CAUTION: MAKE SURE THAT THE WATER TEMPERATURE IS NOT HIGHER THAN 60 DEG.C (140.00 DEG.F). IF IT IS HIGHER, IT CAN CAUSE DAMAGE TO THE COMPONENTS.
CAUTION: BEFORE YOU START THE PROCEDURE, PUT BLANKING PLUGS ON ALL THE OPENINGS OF THE WASTE LINES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF LEAKAGE. THIS CAN CAUSE A CONTAMINATION IN THE WORK AREA.
I. Cleaning of the Waste Tank Line in the Direction to the Waste Tank
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F VACLAV 2 Schematic
NOTE: It is necessary to start the procedure from the bulk cargo compartment.
NOTE: It is not necessary to disconnect the electrical connectors for this procedure.
   (1) Remove the PLUG - BLANKING from the waste lines (7) and (11) and the waste-tank inlet port (8).
   (2) Clean the toilet waste line (11):
     (a) Preparation of the high pressure cleaner and the vacuum pump:
       1 Install the suction and pressure adapter on the waste line (11) in the bulk cargo compartment.
       2 Install the restrictor hose assembly between the waste line (7) and the waste-tank inlet port (8).
       3 Attach the suction hose of the high pressure cleaner to the suction and pressure adapter.
       4 Attach the high pressure hose of the high pressure cleaner to the spray nozzle of the suction and pressure adapter.
       5 Set the main switch of the vacuum service vehicle and the high pressure pump to the REMOTE position.
       6 Operation of the high-pressure cleaning equipment:
         a Let the vacuum pressure increase until it is between 250 mbar (3.63 psi) and 270 mbar (3.92 psi).
         b Operate the high-pressure water pump at a maximum pressure of 400 bar (5801.5080 psi).
     (b) Slowly push the high pressure hose assembly at a rate of approximately 1 m/min into the waste line. Stop when it is near the restrictor hose.
     (c) Stop the high-pressure water pump.
     (d) While the vacuum source continues to operate, slowly retract the high pressure hose from the waste line:
       1 Stop the vacuum source.
   (3) Do a borescope inspection of the waste line (11) given in para 3.F.
   (4) If the borescope inspection shows that the procedure did not give a satisfactory result, do it again.
Subtask 38-31-00-410-106-A
J. Aircraft Maintenance Configuration
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
F Shell Clamp Installation-Requirements
   (1) When the toilet waste line (11) is clean:
     (a) Remove the suction and pressure adapter from the toilet waste line (11).
     (b) Remove the restrictor hose assembly from the waste line (7) and the waste-tank inlet port (8).
     (c) Install the short waste line (1):
       1 Put the pipe (1) in its installation position between the waste line (7) and the waste-tank inlet port (8).
       2 Install the new AIPC 38-31-02-01-040 O-RINGS (16)AIPC 38-31-83-01-107 O-RINGS (16)AIPC 38-31-82-01-030 O-RINGS (16).
       3 Install the sleeves (18).
       4 Install the coupler clamps (17).
       5 Make sure that the coupler clamps (17) are installed correctly:
         a Axial adjustment is not more than 6.35 mm (0.25 in.).
         b Angular misalignment is not more than +/- 4 degree in any direction around centerline.
     (d) Connect the aft toilet waste-line (11) to the toilet waste line (12):
       1 Install the new AIPC 38-31-02-01-040 O-RINGS (13)AIPC 38-31-83-01-107 O-RINGS (13)AIPC 38-31-82-01-030 O-RINGS (13).
       2 Install the sleeve (15).
       3 Install the coupler clamp (14).
       4 Make sure that the coupler clamp (14) is installed correctly:
         a Axial adjustment is not more than 6.35 mm (0.25 in.)
         b Angular misalignment is not more than +/- 4 degree in any direction around centerline.
Subtask 38-31-00-710-067-A
K. Do a functional test of the toilet assemblies (Ref. AMM TASK 38-31-00-710-009).
Subtask 38-31-00-790-063-A
L. Aircraft Maintenance Configuration
   (1) Do the leak check of the vacuum system and examine the connections for leaks (Ref. AMM TASK 38-31-00-790-002):
     (a) Leaks are not permitted.
5. Close-up
Subtask 38-31-00-410-101-A ** ON A/C NOT FOR ALL
A. Close Access
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the container and the vacuum service vehicle.
   (3) Install the center support strut at FR65 (Ref. AMM TASK 53-43-11-400-001).
   (4) Install the toilet shroud (Ref. AMM TASK 25-45-22-400-001) (Ref. AMM D/O 25-45-22-40).
   (5) Install partitions 161DW and 162DW (Ref. AMM TASK 25-55-12-400-001).
   (6) Install partitions 151BW and 151AW (Ref. AMM TASK 25-55-11-400-001).
   (7) Install the sidewall panels 151CW and 151DW (Ref. AMM TASK 25-55-11-400-003).
   (8) Set cargo-compartment light switch 8LU to the OFF position.
   (9) Remove the access platform(s).
   (10) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
Subtask 38-31-00-410-101-B ** ON A/C NOT FOR ALL
A. Close Access
F Adaptor and Restrictor Arrangement ** ON A/C NOT FOR ALL
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the container and the vacuum service vehicle.
   (3) Install the toilet shroud (Ref. AMM TASK 25-45-22-400-001) (Ref. AMM TASK 25-45-22-400-802).
   (4) Install partitions 131NW and 131PW (Ref. AMM TASK 25-54-12-400-001).
   (5) Install sidewall panel 131MW (Ref. AMM TASK 25-54-12-400-003).
   (6) Set cargo-compartment light switch 6LU to the OFF position.
   (7) Remove the access platform(s).
   (8) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
   (9) Install the center support strut at FR65 (Ref. AMM TASK 53-43-11-400-001).
   (10) Install partitions 161DW and 162DW (Ref. AMM TASK 25-55-12-400-001).
   (11) Set cargo-compartment light switch 8LU to the OFF position.
   (12) Remove the access platform(s).
   (13) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
Subtask 38-31-00-862-079-A
B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 01:19:58 UTC
"Aviabrain" 2025