Servicing of the Toilet System

TASK 12-16-38-613-001-A
Servicing of the Toilet System

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE TOILET WASTE SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (TOILET WASTE IS DANGEROUS FOR HEALTH).

WARNING: AFTER YOU DO WORK ON THE TOILET WASTE SYSTEM, DO NOT DO SERVICING OF THE POTABLE WATER SYSTEM. THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH.

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. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	1	CART - SERVICING, TOILET

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
172AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-31-38-660-001-A	Cold Weather Maintenance - Water/Waste
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
Service Panel - Location

3. Job Set-up
Subtask 12-16-38-861-050-A

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

Subtask 12-16-38-680-051-A

B. Drain the toilet waste tanks when the outside air temperature is as shown in the cold weather maintenance - procedure (Ref. AMM TASK 12-31-38-660-001).

Subtask 12-16-38-010-050-B

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position.
(2) Put the CART - SERVICING, TOILET in position.
(3) Open access door 172AR.

4. Procedure
Subtask 12-16-38-680-050-E

A. Draining of the System

Service Panel - Location

CAUTION: MAKE SURE THAT THE VACUUM PRESSURE IS NOT MORE THAN 6 PSI (0,4 BAR) MAXIMUM, IF YOU USE A VACUUM OPERATED TOILET SERVICE VEHICLE. A HIGHER VACUUM PRESSURE CAN CAUSE DAMAGE TO THE VACUUM TOILET SYSTEM.

(1) Open the cap of the toilet drain connection and the fill and rinse connection.
(2) Connect the toilet service-vehicle hose-adapter and the 4-inch diameter drain hose to the toilet drain connection.
(3) Push the PUSH TO OPEN lever (1).
(4) Move the drain valve control-handle 3341MM from the CLOSE to the OPEN position.

NOTE: The waste will drain.

Subtask 12-16-38-170-050-A

B. Flushing of the Toilet System
(1) Connect the 1-inch flush/fill hose of the toilet service vehicle to the fill and rinse connection(s).
(2) Make sure that drain valve control-handle(s) 3341MM is (are) in the OPEN position.
(3) Operate the toilet service vehicle.
(4) Flush the waste tank with a maximum of 57 l (15 USgal) of water with a pressure value between 2.40 bar (35 psi) and 3.45 bar (50 psi).

NOTE: The time necessary to flush the waste tank is approximately 90 seconds.

NOTE: The rinse function will not be satisfactory if you flush the waste tank with a pressure value lower than 2.40 bar (35 psi).

(5) Feel the drain hose with your hands to make sure that the waste is fully drained.
(6) Stop the operation of the toilet service vehicle.
(7) Turn and push toilet drain-valve control-handle(s) 3341MM to the CLOSE position.

Subtask 12-16-38-615-051-F

C. Cleaning of the Waste Service Panel

Service Panel - Location

(1) Stop the toilet service vehicle.

(2) Disconnect the 4 inch drain hose and the hose adapter.
(3) Make sure that there are no leaks from the drain connection.

CAUTION: MAKE SURE THAT THE LEVER ON THE DRAIN CAP IS FULLY CLOSED AND TOUCHES THE DRAIN CAP. IF IT IS NOT FULLY CLOSED, STRUCTURAL DAMAGE CAN OCCUR TO THE SERVICE DOOR.

(4) Close the drain cap (2).

NOTE: When you close the drain cap (2), the inner flap will close and lock automatically.

(5) Disconnect the 1 inch fill and rinse hose connection.
(6) Let the hose connection drain fully.
(7) Close the cap of the fill and rinse connection.
(8) Clean all the parts of the service panel and the adjacent area with clear water. This is to remove the contamination that can cause corrosion.
(9) Dry the service panel and the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) .

5. Close-up
Subtask 12-16-38-410-051-B

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 172AR.

Subtask 12-16-38-862-050-A

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

Subtask 12-16-38-942-051-A

C. Removal of the Ground Support Equipment
(1) Remove the access platform(s).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 22:56:05 UTC