Cleaning of the Toilet Waste Lines with Crushed Ice

TASK 38-31-00-100-005-A
Cleaning of the Toilet Waste Lines with Crushed Ice

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.11GCA1)	Deodorant-Aircraft Toilets - -
(Material No.14SBA1)	Textile-Lint free Cotton -
No specific	crushed ice
No specific	vinegar (10% acetic acid solution)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 12-15-38-613-001-A	Fill the Potable Water Tank System (Aircraft Electrical Power Available)
TASK 12-16-38-613-001-A	Servicing of the Toilet System
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

3. Job Set-up
Subtask 38-31-00-861-063-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 38-31-00-680-051-A

B. Aircraft Maintenance Configuration
(1) Do the servicing of the waste holding tank (Ref. AMM TASK 12-16-38-613-001).
(2) Make sure that the potable water system contains water and is pressurized (Ref. AMM TASK 12-15-38-613-001) and (Ref. AMM TASK 38-10-00-614-001).

Subtask 38-31-00-865-094-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-SYS	35MG	A06
** 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 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	VACU TOIL SYS-VACU-GEN	33MG	A08
** 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	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

Subtask 38-31-00-010-077-A

D. Get access to the lavatories.

4. Procedure
Subtask 38-31-00-100-051-A

WARNING: ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN YOU DO THIS TASK.

A. Clean the Toilet Waste Lines

NOTE: It is necessary to start the procedure at the most forward lavatory.

(1) Flush the toilet assembly.
(2) Put 1 l (0.2642 USgal) of vinegar (10% acetic acid solution) and/or Deodorant-Aircraft Toilets - - (Material No.11GCA1) into each toilet bowl.
(3) Let the toilet bowls soak for 10 minutes.

NOTE: It is important not to ignore the cleaning agent soaking.

(4) Put 2 l (0.5 USgal) of crushed ice into the toilet assembly and flush the toilet immediately 2 times.

NOTE: The ice must be crushed, ice cubes are not permitted.

(5) Do the procedure for all of the toilets.
(6) After 30 minutes flush the toilet assemblies 3 times.

NOTE: It is necessary to start the procedure at the most forward lavatory.

5. Close-up
Subtask 38-31-00-613-062-A

A. Do the servicing of the waste system (Ref. AMM TASK 12-16-38-613-001).

Subtask 38-31-00-410-075-A

B. Close Access
(1) Dry the area around the toilet with Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the lavatory door(s).

Subtask 38-31-00-862-063-A

C. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 01:19:59 UTC