DOC AIRBUS | AMM A320FDisinfection of the Potable Water System with Hypochlorite and Discard of Water Filter Cartridges (if installed)
TASK 38-10-00-670-803-A
Disinfection of the Potable Water System with Hypochlorite and Discard of Water Filter Cartridges (if installed)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 38-10-00-861-064-A
(1) In the cockpit, on overhead panel 30VU, put the WARNING NOTICE(S) in position to tell persons not to pressurize the bleed system.
(2) Put the WARNING NOTICE(S) in position at the HP ground connector to tell persons not to supply the ground air.
(3) Make sure that all the potable-water shutoff valves in the lavatories and the wet unit galleys are closed.
(4) In the lavatories, open the cabinet door and set the switch on each water heater to the OFF position:
(a) If necessary, use the FLASHLIGHT and the MIRROR - INSPECTION, FLEXIBLE and find the power switch of the water heater.
(5) Put the WARNING NOTICE(S) in position at each lavatory and wet unit galley to tell persons not to use the potable water system.
(6) Remove the water-faucet nozzle assemblies from the lavatories (Ref. AMM TASK 38-12-41-000-006).
(7) Remove the galley water-filter elements (Ref. AMM TASK 38-12-23-920-802):
(a) If the caps and the filter elements are installed on the galley filter housings, remove them.
(b) Do not install the new filter elements at this time.
(c) If the caps are removed from the galley filter housings, install them and tighten the clamps.
(d) If the canister is installed on the interface, remove it.
(e) Do not install a new canister at this time.
(f) Install the bypass connector on the interface and tighten it.
(a) Find all the equipment connected to the potable water system (for example, the coffee maker, the water heater or the steam oven) (Ref. AMM D/O 25-35-00-00).
(b) Remove the equipment you found. Refer to the related removal tasks for these components.
(c) If necessary, send the components to the workshop to do the disinfection of the removed components and clean them.
(9) Connect the HOSE - VINYL to each waste water drain-mast.
(10) Put the end of each HOSE - VINYL in the CONTAINER 50 L(15 USGAL).
(11) At the PWSP:
(a) Connect the adaptor (3) (with the flexible hose (5) and the shutoff valve (4)) to the fill/drain port (2).
(b) Put the end of the flexible hose (5) into the container with the disinfectant solution (8).
(c) Connect the filling hose (7) (with the shutoff valve (6)) from the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND to the adaptor (3).
4. Procedure
Subtask 38-10-00-670-075-A
(1) Open all the manual shutoff valves in the lavatories and the galleys.
(2) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(3) Bleed the potable water system:
(a) In each lavatory, flush each toilet 15 times.
(b) Open the water faucets:
2 In each wet galley:
a Open the manual shutoff valve.
b If installed, open the water faucet and let 5 l (1.32 USgal) of the disinfection solution flow through the sink.
(c) Close all the potable-water shutoff valves and open them again.
(6) Open the shutoff valve (4).
(7) Fill the potable water system with the disinfectant solution until it flows out of the POTABLE WATER OVERFLOW port (Ref. AMM TASK 12-15-38-613-001).
(9) Close the shutoff valve (6).
(10) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(11) Let the disinfectant solution stay in the system for 1 hour.
(12) Do step C.(1) to (10) again and let the solution stay in the system again for 30 minutes.
(13) Disconnect the filling hose (7) from the adaptor (3).
(14) Disconnect the adaptor (3) from the fill/drain port (2).
Subtask 38-10-00-170-058-A
Subtask 38-10-00-560-083-A
[Rev.10 from 2021]
2026.04.01 01:17:45 UTC
Disinfection of the Potable Water System with Hypochlorite and Discard of Water Filter Cartridges (if installed)
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
WARNING:
REFER TO THE MANUFACTURER'S MATERIAL SAFETY DATA SHEETS FOR CONSUMABLE MATERIAL INFORMATION. THIS INCLUDES HAZARDOUS INGREDIENTS, PHYSICAL AND CHEMICAL CHARACTERISTICS, FIRE, EXPLOSION, REACTIVITY, HEALTH HAZARD DATA, PRECAUTIONS FOR SAFE HANDLING, AND USE OF CONTROL MEASURES.
WARNING:
DO NOT DO WORK ON THE WASTE WATER SYSTEM AND THE POTABLE WATER SYSTEM AT THE SAME TIME.
THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH.
WARNING:
MAKE SURE THAT THE EQUIPMENT YOU USE FOR THIS PROCEDURE IS CLEAN AND APPROVED FOR THE POTABLE WATER SYSTEM. IF NOT IT CAN CAUSE CONTAMINATION OF THE POTABLE WATER SYSTEM.
NOTE: Before you do the disinfection procedure, do an analysis of the water you will use. Make sure that the analysis result is within the limits given for drinking water by the local authority.
ZONE: 170
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | 2 | CART - SERVICING, WATER, POTABLE |
| No specific | 2 | CONTAINER 10 L(2 1/2 USGAL) |
| No specific | 1 | CONTAINER 50 L(15 USGAL) |
| No specific | 1 | FILTER - FINE MESH |
| No specific | 2 | FLASHLIGHT |
| No specific | 2 | HOSE - VINYL |
| No specific | 2 | MIRROR - INSPECTION, FLEXIBLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| No specific | 2 | WATER SOURCE - GROUND |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.11AKB1) | Disinfectant-Potable Water System Hypochlorite - |
| No specific | Test Strips for Free Chlorine |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 170 | AFT CAB U/FLOOR COMPT AFT BHD OF BULK |
| 171AL |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-15-38-613-001-A | Fill the Potable Water Tank System (Aircraft Electrical Power Available) |
| TASK 12-15-38-613-002-A | Fill the Potable Water Tank System (Aircraft Electrical Power not Available) |
| TASK 12-24-38-680-001-A | Draining of the Potable Water System (with Electrical Power) |
| TASK 12-31-38-660-001-A | Cold Weather Maintenance - Water/Waste |
| TASK 12-33-21-618-001-A | Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Available) |
| 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 12-33-21-618-001-A-03 | Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Not Available) |
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 38-10-00-614-001-A | Pressurization of the Potable Water System from a Ground Air Supply |
| TASK 38-10-00-614-002-A | Depressurization of the Potable Water System |
| TASK 38-10-00-614-003-A | Pressurization of the Potable Water System with the Compressor |
| TASK 38-12-23-920-802-A | Replacement of the Galley Water-Filter Elements |
| TASK 38-12-41-000-006-A | Removal of the Nozzle Assembly |
| TASK 38-12-41-000-006-A-01 | Removal of the Nozzle Assembly |
| TASK 38-12-41-400-006-A | Installation of the Nozzle Assembly |
| TASK 38-12-41-400-006-A-01 | Installation of the Nozzle Assembly |
| TASK 38-31-00-680-001-A | Draining of the Toilet System |
| TASK 38-41-00-790-002-A | Leak Check of the Air supply System |
| TASK 25-35-00-00 | GALLEY EQUIPMENT - DESCRIPTION AND OPERATION |
Disinfection of Potable Water SystemSubtask 38-10-00-861-064-A
A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 38-10-00-680-057-A (1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
B. Draining of the Potable Water System
(1) Drain the potable water system (Ref. AMM TASK 12-24-38-680-001).
Subtask 38-10-00-560-078-A (1) Drain the potable water system (Ref. AMM TASK 12-24-38-680-001).
C. Preparation of the Disinfectant Solution with Calcium Hypochlorite or Sodium Hypochlorite
Table 1
or
Table 2
(2) If the Disinfectant-Potable Water System Hypochlorite - (Material No.11AKB1) are used:
(a) Let the disinfectant material fully mix in the water.
(b) Put the disinfectant solution through a FILTER - FINE MESH into a clean CONTAINER 10 L(2 1/2 USGAL).
Subtask 38-10-00-618-056-A WARNING:
ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.
WARNING:
DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
(1) Mix the Disinfectant-Potable Water System Hypochlorite - (Material No.11AKB1) with 5 l (1.32 USgal) water (water temperature approx. 20 deg.C (68.00 deg.F)) in a CONTAINER 10 L(2 1/2 USGAL) as given in Table 1 or Table 2. - FLUSH IT AWAY WITH CLEAN WATER
- GET MEDICAL AID.
NOTE: Airbus recommends:
- To use the water from the cold water tap for the disinfection of the potable water system.
- Not to keep the water or the disinfectant solution in a very cold or very hot condition before you do the disinfection procedure.
NOTE: The mixture given in Table 1 or Table 2 is for a concentration of 100 milligrams per liter Free Available Chlorine (FAC) for a volume of 250 l (66.04 USgal) of water.
Table 1
| A/C Type | Number of tanks | Usable tank volume in l (USgal) | Volume water needed for disinfection solution in l (USgal) * | Calcium hypochlorite (70%) (CML 14 003E) in g (ounces) | Sodium hypochlorite (13%) (CML 14 003F) in l (Usgal) |
|---|---|---|---|---|---|
| A318,A319 A320,A321 | 1 | 200 (53) | 250 (66) | 36 (1.3) | - |
Table 2
| A/C Type | Number of tanks | Usable tank volume in l (USgal) | Volume water needed for disinfection solution in l (USgal) * | Calcium hypochlorite (70%) (CML 14 003E) in g (ounces) | Sodium hypochlorite (13%) (CML 14 003F) in l (Usgal) |
|---|---|---|---|---|---|
| A318,A319 A320,A321 | 1 | 200 (53) | 250 (66) | - | 0.16 (0.04) |
(a) Let the disinfectant material fully mix in the water.
(b) Put the disinfectant solution through a FILTER - FINE MESH into a clean CONTAINER 10 L(2 1/2 USGAL).
D. Preparation for Cold Weather Conditions
(1) Obey the cold-weather maintenance procedure (Ref. AMM TASK 12-31-38-660-001).
(2) If the temperature in the aircraft is below 4 DEG.C (39.20 DEG.F), do the pre-conditioning procedure (Ref. AMM TASK 12-33-21-618-001).
Subtask 38-10-00-865-079-A (1) Obey the cold-weather maintenance procedure (Ref. AMM TASK 12-31-38-660-001).
(2) If the temperature in the aircraft is below 4 DEG.C (39.20 DEG.F), do the pre-conditioning procedure (Ref. AMM TASK 12-33-21-618-001).
E. Open, safety and tag this(these) circuit breaker(s):
Subtask 38-10-00-010-068-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD & MID-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | WATER SYSTEM-DEPRESS | 1MD | B02 |
| 2000VU | WATER SYSTEM-QANT-IND | 1MA | B01 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACUUM-SYS | 35MG | A06 |
| 2001VU | WATER-SYSTEM-DEPRESS | 1MD | F03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER SYS-QUANT-IND | 1MA | B06 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER SYS-AIR-COMPRESSOR | 19MD | F01 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAVATORY AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER SYS-DRAIN | 1MP | B05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACUUM-GEN | 33MG | A08 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-E | 34MG | A04 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-D | 39MG | A03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E | 9MB | B03 |
| ** ON A/C ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-A | 32MG | A01 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACU-SYS | 35MG | A06 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER-SYS-DRAIN | 1MP | B05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACU-GEN | 33MG | A08 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-G | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER-D/F | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-G | 34MG | A04 |
| 2001VU | VACU TOIL SYS-LAV PWR-F | 39MG | A03 |
| 2001VU | VACU TOIL SYS-LAV PWR-D | 45MG | A02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER-SYSTEM-DEPRESS | 1MD | D05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E/L | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-L | 45MG | A02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-L | 23MG | A05 |
| 2001VU | LAV AFT-HOT WATER-L | 9MB | C04 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D/L | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-M | 34MG | A04 |
| 2001VU | LAV AFT-HOT WATER-M | 9MB | B03 |
F. Get Access
(1) Put an ACCESS PLATFORM 1M(3 FT) in position at Zone 171.
(2) Open service door 171AL.
(3) Put a WARNING NOTICE(S) in position on service door 171AL to tell persons not to close it.
(4) Connect a HOSE - VINYL to the overflow connection at the Potable Water Service Panel (PWSP).
(5) Put the end of the HOSE - VINYL in a CONTAINER 10 L(2 1/2 USGAL).
Subtask 38-10-00-860-058-A (1) Put an ACCESS PLATFORM 1M(3 FT) in position at Zone 171.
(2) Open service door 171AL.
(3) Put a WARNING NOTICE(S) in position on service door 171AL to tell persons not to close it.
(4) Connect a HOSE - VINYL to the overflow connection at the Potable Water Service Panel (PWSP).
(5) Put the end of the HOSE - VINYL in a CONTAINER 10 L(2 1/2 USGAL).
WARNING:
MAKE SURE THAT THE EQUIPMENT YOU USE FOR THIS PROCEDURE IS CLEAN AND APPROVED FOR THE POTABLE WATER SYSTEM. IF NOT IT CAN CAUSE CONTAMINATION OF THE POTABLE WATER SYSTEM.
G. Aircraft Maintenance Configuration(1) In the cockpit, on overhead panel 30VU, put the WARNING NOTICE(S) in position to tell persons not to pressurize the bleed system.
(2) Put the WARNING NOTICE(S) in position at the HP ground connector to tell persons not to supply the ground air.
(3) Make sure that all the potable-water shutoff valves in the lavatories and the wet unit galleys are closed.
(4) In the lavatories, open the cabinet door and set the switch on each water heater to the OFF position:
(a) If necessary, use the FLASHLIGHT and the MIRROR - INSPECTION, FLEXIBLE and find the power switch of the water heater.
(5) Put the WARNING NOTICE(S) in position at each lavatory and wet unit galley to tell persons not to use the potable water system.
(6) Remove the water-faucet nozzle assemblies from the lavatories (Ref. AMM TASK 38-12-41-000-006).
(7) Remove the galley water-filter elements (Ref. AMM TASK 38-12-23-920-802):
(a) If the caps and the filter elements are installed on the galley filter housings, remove them.
(b) Do not install the new filter elements at this time.
(c) If the caps are removed from the galley filter housings, install them and tighten the clamps.
(d) If the canister is installed on the interface, remove it.
(e) Do not install a new canister at this time.
(f) Install the bypass connector on the interface and tighten it.
NOTE: The bypass connector is attached to the interface.
(8) Remove the equipment connected to the potable water system from each wet galley:(a) Find all the equipment connected to the potable water system (for example, the coffee maker, the water heater or the steam oven) (Ref. AMM D/O 25-35-00-00).
(b) Remove the equipment you found. Refer to the related removal tasks for these components.
(c) If necessary, send the components to the workshop to do the disinfection of the removed components and clean them.
(9) Connect the HOSE - VINYL to each waste water drain-mast.
(10) Put the end of each HOSE - VINYL in the CONTAINER 50 L(15 USGAL).
(11) At the PWSP:
(a) Connect the adaptor (3) (with the flexible hose (5) and the shutoff valve (4)) to the fill/drain port (2).
(b) Put the end of the flexible hose (5) into the container with the disinfectant solution (8).
(c) Connect the filling hose (7) (with the shutoff valve (6)) from the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND to the adaptor (3).
Subtask 38-10-00-670-075-A
A. Disinfection of the Potable Water Tank and Distribution System
(1) Fill the potable water system with water and with the disinfectant solution:
(a) Before you fill the potable water system, make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
1 Turn the FILL OVERFLOW DRAIN handle (9) from the NORMAL to the PULL TO FILL position.
2 Pull the FILL OVERFLOW DRAIN handle (9) out to the mechanical stop.
(c) Open the shutoff valve (6) in the filling hose (7) of the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND.
(d) Open the shutoff valve (4) on the flexible hose (5).
(e) Fill the potable water system with water and with three quarters of the disinfectant solution (Ref. AMM TASK 12-15-38-613-002).
(g) Fill the potable water system with water until the solution flows out of the POTABLE WATER OVERFLOW port (Ref. AMM TASK 12-15-38-613-002).
(h) Close the shutoff valve (6).
(i) On the PWSP (1):
1 Push the FILL OVERFLOW DRAIN handle (9) in.
2 Turn the FILL OVERFLOW DRAIN handle (9) from the PULL TO FILL to the NORMAL position.
Subtask 38-10-00-865-080-A (1) Fill the potable water system with water and with the disinfectant solution:
(a) Before you fill the potable water system, make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
NOTE: If the potable water system is depressurized, the solution can flow out of the POTABLE WATER OVERFLOW port, when the potable water tank is filled.
(b) On the PWSP (1): 1 Turn the FILL OVERFLOW DRAIN handle (9) from the NORMAL to the PULL TO FILL position.
2 Pull the FILL OVERFLOW DRAIN handle (9) out to the mechanical stop.
(c) Open the shutoff valve (6) in the filling hose (7) of the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND.
(d) Open the shutoff valve (4) on the flexible hose (5).
(e) Fill the potable water system with water and with three quarters of the disinfectant solution (Ref. AMM TASK 12-15-38-613-002).
NOTE: The disinfectant solution will flow into the potable water system by suction caused by the flow of water.
NOTE: It is necessary not to use all of the disinfectant solution for this procedure. Approximately one quarter of the disinfectant solution must be kept to bleed the potable water system.
(f) When three quarters of the disinfection solution are used, close the shutoff valve (4). (g) Fill the potable water system with water until the solution flows out of the POTABLE WATER OVERFLOW port (Ref. AMM TASK 12-15-38-613-002).
(h) Close the shutoff valve (6).
(i) On the PWSP (1):
1 Push the FILL OVERFLOW DRAIN handle (9) in.
2 Turn the FILL OVERFLOW DRAIN handle (9) from the PULL TO FILL to the NORMAL position.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 38-10-00-670-076-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 2000VU | WATER SYSTEM-DEPRESS | 1MD | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER-SYSTEM-DEPRESS | 1MD | F03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-E | 34MG | A04 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-D | 39MG | A03 |
| ** ON A/C ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-A | 32MG | A01 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-G | 34MG | A04 |
| 2001VU | VACU TOIL SYS-LAV PWR-F | 39MG | A03 |
| 2001VU | VACU TOIL SYS-LAV PWR-D | 45MG | A02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER-SYSTEM-DEPRESS | 1MD | D05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-L | 45MG | A02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-L | 23MG | A05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-LAV PWR-M | 34MG | A04 |
WARNING:
DO NOT GET THE WATER WITH THE DISINFECTANT SOLUTION ON YOUR SKIN OR IN YOUR EYES.
DO NOT LET WATER TOUCH SURFACES OTHER THAN THE WASH BASIN (WHEN THE NOZZLE ASSY IS NOT ON THE FAUCET, THE SOLUTION FLOWS OUT HORIZONTALLY).
TO DO THIS: - PUT ON PROTECTIVE CLOTHING
C. Disinfection of the Potable-Water Distribution System - PUT ON EYE PROTECTION OR GOGGLES
- PUT A GUARD AROUND THE WATER FAUCET OUTLET TO CAUSE SPRAY FROM THE SOLUTION TO FLOW INTO THE WASH BASIN (SPRAY FROM THE SOLUTION MUST NOT GO ON ADJACENT SURFACES).
(1) Open all the manual shutoff valves in the lavatories and the galleys.
(2) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(3) Bleed the potable water system:
(a) In each lavatory, flush each toilet 15 times.
(b) Open the water faucets:
NOTE: If the quantity of contamination in the potable water system is large:
1 In each lavatory, open the water faucet for 3 minutes. - It is necessary to let the disinfection solution flow longer through the water faucets.
- This makes sure that the potable water system is clean.
2 In each wet galley:
a Open the manual shutoff valve.
b If installed, open the water faucet and let 5 l (1.32 USgal) of the disinfection solution flow through the sink.
(c) Close all the potable-water shutoff valves and open them again.
NOTE: This lets the disinfection solution soak on the two faces of the shutoff valves.
(4) Depressurize the potable water system (Ref. AMM TASK 38-10-00-614-002). NOTE: If the potable water system is depressurized, the solution can flow out of the POTABLE WATER OVERFLOW port, when the potable water tank is filled.
(5) Open the shutoff valve (6). (6) Open the shutoff valve (4).
(7) Fill the potable water system with the disinfectant solution until it flows out of the POTABLE WATER OVERFLOW port (Ref. AMM TASK 12-15-38-613-001).
NOTE: The disinfectant solution will flow into the potable water system by suction caused by the flow of water.
(8) Close the shutoff valve (4). (9) Close the shutoff valve (6).
(10) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(11) Let the disinfectant solution stay in the system for 1 hour.
(12) Do step C.(1) to (10) again and let the solution stay in the system again for 30 minutes.
(13) Disconnect the filling hose (7) from the adaptor (3).
(14) Disconnect the adaptor (3) from the fill/drain port (2).
D. Flush the Potable Water System (after disinfection with Calcium Hypochlorite or Sodium Hypochlorite)
(2) Fill the potable water system with clean water (Ref. AMM TASK 12-15-38-613-001).
(3) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(4) Operate the water faucets in the lavatories and the galleys to flush them.
(a) In the lavatories:
1 Operate each toilet and flush it 15 times.
2 Set each water faucet to the COLD position and fill the washbasin with water to the overflow level (approximately 3 l (0.79 USgal)).
3 Drain the washbasin fully.
4 Set each water faucet to the HOT position and do the procedure again.
(b) In each wet galley:
1 If installed, open the water faucet and let 5 l (1.32 USgal) of water flow through the sink.
Subtask 38-10-00-670-074-A WARNING:
DO NOT GET THE WATER WITH THE DISINFECTANT SOLUTION ON YOUR SKIN OR IN YOUR EYES.
DO NOT LET WATER TOUCH SURFACES OTHER THAN THE WASH BASIN (WHEN THE NOZZLE ASSY IS NOT ON THE FAUCET, THE SOLUTION FLOWS OUT HORIZONTALLY).
TO DO THIS: - PUT ON PROTECTIVE CLOTHING
(1) Drain the potable water system (Ref. AMM TASK 12-24-38-680-001). - PUT ON EYE PROTECTION OR GOGGLES
- PUT A GUARD AROUND THE WATER FAUCET OUTLET TO CAUSE SPRAY FROM THE SOLUTION TO FLOW INTO THE WASH BASIN (SPRAY FROM THE SOLUTION MUST NOT GO ON ADJACENT SURFACES).
(2) Fill the potable water system with clean water (Ref. AMM TASK 12-15-38-613-001).
(3) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(4) Operate the water faucets in the lavatories and the galleys to flush them.
(a) In the lavatories:
1 Operate each toilet and flush it 15 times.
2 Set each water faucet to the COLD position and fill the washbasin with water to the overflow level (approximately 3 l (0.79 USgal)).
3 Drain the washbasin fully.
4 Set each water faucet to the HOT position and do the procedure again.
(b) In each wet galley:
1 If installed, open the water faucet and let 5 l (1.32 USgal) of water flow through the sink.
E. Test for Remaining Disinfectant
(1) Examine the potable water in all galleys and lavatories for remaining disinfectant.
(a) Do the test with Test Strips for Free Chlorine.
(b) Carefully let the water flow on the test strip at the water faucets in the galleys and lavatories.
(2) If the test shows that there is remaining disinfectant that is more than the legal limits in the water, flush the system again.
5. Close-up(1) Examine the potable water in all galleys and lavatories for remaining disinfectant.
(a) Do the test with Test Strips for Free Chlorine.
(b) Carefully let the water flow on the test strip at the water faucets in the galleys and lavatories.
(2) If the test shows that there is remaining disinfectant that is more than the legal limits in the water, flush the system again.
NOTE: The legal limits are given by the national health authority for drinking water.
Subtask 38-10-00-560-083-A
A. Installation of the Filter Elements and the Nozzle Assemblies (after disinfection of the potable water system with calcium hypochlorite or sodium hypochlorite)
(1) Install the galley water-filter elements (Ref. AMM TASK 38-12-23-920-802):
(a) If removed, install new filter elements to the related galley filter housings.
(b) If installed, remove the bypass connectors from the related interfaces.
(c) If removed, install new canisters to the related interfaces.
(2) In each wet galley, install all equipment connected to the potable water system which you removed for cleaning in the shop. Refer to the related installation tasks for these components.
(3) Do the leak check of the air supply system (Ref. AMM TASK 38-41-00-790-002).
Subtask 38-10-00-865-091-A (1) Install the galley water-filter elements (Ref. AMM TASK 38-12-23-920-802):
(a) If removed, install new filter elements to the related galley filter housings.
(b) If installed, remove the bypass connectors from the related interfaces.
(c) If removed, install new canisters to the related interfaces.
(2) In each wet galley, install all equipment connected to the potable water system which you removed for cleaning in the shop. Refer to the related installation tasks for these components.
(3) Do the leak check of the air supply system (Ref. AMM TASK 38-41-00-790-002).
NOTE: Leaks are not permitted.
(4) Install the water-faucet nozzle assemblies (Ref. AMM TASK 38-12-41-400-006). B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 38-10-00-613-065-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD & MID-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | WATER SYSTEM-DEPRESS | 1MD | B02 |
| 2000VU | WATER SYSTEM-QANT-IND | 1MA | B01 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACUUM-SYS | 35MG | A06 |
| 2001VU | WATER-SYSTEM-DEPRESS | 1MD | F03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER SYS-QUANT-IND | 1MA | B06 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER SYS-AIR-COMPRESSOR | 19MD | F01 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAVATORY AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER SYS-DRAIN | 1MP | B05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACUUM-GEN | 33MG | A08 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACU-SYS | 35MG | A06 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER-SYS-DRAIN | 1MP | B05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | VACU TOIL SYS-VACU-GEN | 33MG | A08 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-G | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER-D/F | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | WATER-SYSTEM-DEPRESS | 1MD | D05 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E/L | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-L | 9MB | C04 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D/L | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-M | 9MB | B03 |
C. Filling of the Potable Water System
(1) If necessary, fill the potable water system (Ref. AMM TASK 12-15-38-613-001).
Subtask 38-10-00-680-058-A (1) If necessary, fill the potable water system (Ref. AMM TASK 12-15-38-613-001).
D. Draining of the Waste Water Tank
(1) If necessary, drain the waste water tank (Ref. AMM TASK 38-31-00-680-001).
Subtask 38-10-00-410-071-A (1) If necessary, drain the waste water tank (Ref. AMM TASK 38-31-00-680-001).
E. Close Access
(1) Disconnect the hoses from the waste-water drain masts.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Make sure that the manual shutoff valve of the potable water system is open.
(4) Set the switches on the water heaters in all lavatories to the ON position:
(a) If necessary, use a FLASHLIGHT and MIRROR - INSPECTION, FLEXIBLE to find the power switch of the water heater.
(5) Close service door 171AL.
(6) Remove the warning notice(s).
(7) Remove the access platform(s).
Subtask 38-10-00-942-063-A (1) Disconnect the hoses from the waste-water drain masts.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Make sure that the manual shutoff valve of the potable water system is open.
(4) Set the switches on the water heaters in all lavatories to the ON position:
(a) If necessary, use a FLASHLIGHT and MIRROR - INSPECTION, FLEXIBLE to find the power switch of the water heater.
(5) Close service door 171AL.
(6) Remove the warning notice(s).
(7) Remove the access platform(s).
F. Removal of the Ground Support Equipment
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) To discard the used disinfection solution, refer to the national or local authority regulations.
Subtask 38-10-00-862-057-A (1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) To discard the used disinfection solution, refer to the national or local authority regulations.