Installation of the Heater Elements

TASK 30-72-51-400-001-A
Installation of the Heater Elements

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

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

CAUTION: USE ONLY THE SPECIFIED MATERIALS AND OBEY THE INSTRUCTIONS FROM THE MATERIAL MANUFACTURERS. OTHER MATERIALS CAN CAUSE DAMAGE TO THE SURFACE PROTECTION OF THE COMPONENTS AND THE RELATED AREA.

FIN: 21DV ** ON A/C NOT FOR ALL

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	ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20
No specific	1	SCRAPER - NON METALLIC
No specific	1	SPRAY - COOLING
No specific	AR	TIE WRAP(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04QAB2)	Coating_- Flexible Structure
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
162DW, 172AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-16-38-613-001-A	Servicing of the Toilet System
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 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-55-12-000-003-A	Removal of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
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
Heater Element

3. Job Set-up
Subtask 30-72-51-860-050-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the toilet system (Ref. AMM TASK 12-16-38-613-001) is drained.
(3) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the waste-water service-panel and the access door 172AR is open.
(4) Make sure that the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001) is open.
(5) Make sure that the CARGO COMP LT switch 8LU is set to ON.
(6) Make sure that the partition 162DW is removed to get access to the nipple(s) and the terminal block 7585VT (Ref. AMM TASK 25-55-12-000-003).

Subtask 30-72-51-865-056-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	POT WIP-SVCE-PNL	15DV	D01
2001VU	WASTE WIP-HEATER-LINE	31DU	E04

4. Procedure
Subtask 30-72-51-140-050-A ** ON A/C NOT FOR ALL

A. Preparation for installation of Waste Water Heated Drain Nipple
(1) Remove the unwanted sealant with a SCRAPER - NON METALLIC.
(2) Clean the component interface and/or the adjacent area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Do an inspection of the component interfaces and the adjacent area.

Subtask 30-72-51-420-050-B ** ON A/C NOT FOR ALL

B. Installation of the Waste Water Heated Drain Nipple
(1) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the screws (6) and (8).
(2) Put the drain nipple (5) and the insulation plate (4) in position.
(3) Install the drain nipple (5) with the screws (6), the washers (3) and the nuts (2).
(4) Remove the PLUG-BLANKING from each disconnected line end.
(5) Install the flush water pipe (1) to the drain nipple (5).
(6) Install the cap assembly (7) with the screws (8), the spacers (9), the washers (10), the nuts (11) on the drain nipple (5).
(7) Connect the electrical contacts with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20 to terminal block 7585VT (12).
(8) Attach the electrical harness with TIE WRAP(S).

Subtask 30-72-51-914-050-A ** ON A/C NOT FOR ALL

C. Application of Sealant for Waste Water Heated Drain Nipple
(1) Apply Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) around the drain nipple (5).
(2) Make the sealant around the drain nipple (5) smooth.
(3) Let the sealant cure.
(4) Apply Coating_- Flexible Structure (Material No.04QAB2) to the sealant around the drain nipple (5).

Subtask 30-72-51-861-052-A ** ON A/C NOT FOR ALL

D. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)

Subtask 30-72-51-865-057-A ** ON A/C NOT FOR ALL

E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	POT WIP-SVCE-PNL	15DV	D01
2001VU	WASTE WIP-HEATER-LINE	31DU	E04

Subtask 30-72-51-710-051-A ** ON A/C NOT FOR ALL

F. Do this test for Waste Water Heated Drain Nipple

NOTE: The control unit 35DU controls and monitors heaters of the water servicing ice-protection and of the waste-water ice-protection. The result of HTRs of the waste water ice-protection system are indicated in parentheses, because the principal interest of this test is the waste water servicing ice-protection.

ACTION	RESULT
1.On the control unit 35DU: Push and hold the TEST pushbutton switch.	On the control unit 35DU: The green LED III/IV (I/II) comes on.
Release the TEST pushbutton switch.	The green LED III/IV (I/II) goes off.

Subtask 30-72-51-720-050-A ** ON A/C NOT FOR ALL

G. Do this test:

ACTION	RESULT
1.On the Flight Attendant Panel (FAP) 120RH:	On the FAP 120RH:
Push the pushbutton switch HEAT DRAIN PNL.	The integral light in the pushbutton switch comes on.
2.At the Forward (Aft) toilet service-panel:	At the Forward (Aft) toilet service-panel:
Apply SPRAY - COOLING on the housing of the thermostat 8DV (10DV).	After approx. 1 minute you feel that the waste outlet becomes warm.
3.On the FAP 120RH:	On the FAP 120RH:
Push the pushbutton switch HEAT DRAIN PNL.	The integral light in the pushbutton switch goes off.
	At the Forward (Aft) toilet service-panel: The heating of the waste outlet stops.

5. Close-up
Subtask 30-72-51-410-053-B ** ON A/C NOT FOR ALL

A. Close Access
(1) For Waste Water Heated Drain Nipple (21DV).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the partition 162DW (Ref. AMM TASK 25-55-12-400-003).
(4) Set the CARGO COMP LT switch 8LU to OFF.
(5) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(6) Close the waste water service-panel 172AR.
(7) Remove the access platform.

Subtask 30-72-51-862-051-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:32:23 UTC