Removal of the Heater Elements

TASK 30-72-51-000-001-A
Removal of the Heater Elements

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	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SCRAPER - NON METALLIC

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
162DW, 172AR

C. Referenced Information

REFERENCE	DESIGNATION
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 25-55-12-000-003-A	Removal 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
Heater Element

3. Job Set-up
Subtask 30-72-51-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 30-72-51-865-055-A ** ON A/C NOT FOR ALL

B. Open, safety and tag 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 30-72-51-010-050-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Waste Water Heated Drain Nipple (21DV).
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the waste-water service-panel and open the access door 172AR.
(3) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
(4) Set the CARGO COMP LT switch 8LU to ON.
(5) Remove the partition 162DW to get access (Ref. AMM TASK 25-55-12-000-003):

To the waste drain panel
To the terminal block 7585VT.

Subtask 30-72-51-613-050-A ** ON A/C NOT FOR ALL

D. Drain the toilet system (Ref. AMM TASK 12-16-38-613-001).

4. Procedure
Subtask 30-72-51-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Waste Water Heated Drain Nipple
(1) Remove and discard the cable ties of the electrical harness.
(2) Disconnect the electrical contacts pins from the terminal block 162DW (12) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(3) Disconnect the waste flush pipe (1) from the drain nipple (5).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Remove the screws (8), the spacers (9), the washers (10) and the nuts (11).
(6) Remove the cap assy (7) from the drain nipple (5).
(7) Remove the screws (6), the washers (3) and nuts (2) from the drain nipple (5).
(8) Remove the sealant around the drain nipple (5) carefully with the SCRAPER - NON METALLIC.
(9) Remove the drain nipple (5) and the insulation plate (4) from the waste-water service panel.

[Rev.10 from 2021] 2026.04.01 00:32:22 UTC