Installation of the Aft-Cargo Drain-Heating Heater-Elements

TASK 30-71-56-400-001-A
Installation of the Aft-Cargo Drain-Heating Heater-Elements

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

ZONE: 150
FIN: 10DU ** ON A/C NOT FOR ALL
FIN: 22DU ** ON A/C NOT FOR ALL
FIN: 87DU ** ON A/C NOT FOR ALL
FIN: 88DU ** ON A/C NOT FOR ALL
FIN: 89DU ** ON A/C NOT FOR ALL
FIN: 90DU ** 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	ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20
No specific	AR	TIE WRAP(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05TAB1)	Adhesive Tape-- Glass Cloth -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT

D. Referenced Information

REFERENCE	DESIGNATION
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 30-71-00-710-002-A	Operational Test of the Waste-Water Ice-Protection Heater-Elements
TASK 52-30-00-860-006-A	Open the Bulk Cargo-Compartment Door
TASK 53-42-14-000-001-A	Removal of the Aft Cargo-Compartment Floor-Panels Zone 150
TASK 53-42-14-400-001-A	Installation of the Aft Cargo-Compartment Floor-Panels Zone 150
TASK 53-42-14-400-001-A-01	Installation of the Aft Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option)
Heater Elements - Removal/Installation

3. Job Set-up
Subtask 30-71-56-860-050-F ** 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 BULK cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-006).
(3) Make sure that the SERVICE LIGHT switch is ON.
(4) Make sure that the following cargo-compartment floor panels are removed
(Ref. AMM TASK 53-42-14-000-001):
(a) FOR [87DU] (HEATER-TAPE, WASTE WTR)
151SG,
(b) FOR [88DU] (HEATER-TAPE, WASTE WTR)
151SG, 151DF,
(c) FOR [89DU] (HEATER-TAPE, WASTE WTR)
151DF, 151GF
(d) FOR [90DU] (HEATER-TAPE, WASTE WTR)
151GF.

Subtask 30-71-56-865-054-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/WASTE WIP-HEATER-LINE	31DW	D03
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02
2001VU	WASTE WIP-HEATER-LINE	22DU	E04
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
2001VU	WASTE WIP-HEATER-CTL	10DU	E03

Subtask 30-71-56-140-050-A ** ON A/C NOT FOR ALL

C. Preparation for Installation

WARNING: YOU MUST ALWAYS WEAR RUBBER GLOVES WHEN YOU DO THIS PROCEDURE.

(1) Clean the waste water line with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Do an inspection of the component interfaces and the adjacent area.

4. Procedure
Subtask 30-71-56-420-050-B ** ON A/C NOT FOR ALL

A. Installation of a Heater Element (Example)
(1) Put the heater element (1) in position on the waste water tube (5).

NOTE: It not permitted to bend the heater element (1) in the Y-axis. The minimum bending radius in the X-axis is 25 mm (0.9843 in.).

(2) Install the Adhesive Tape-- Glass Cloth - (Material No.05TAB1) (4) in a ring-shape to attach the heater element (1) on the waste water tube (5).
(a) Make sure that the heater element (1) is correctly installed on the waste water tube (5).
(3) Safety the two ends of the Adhesive Tape-- Glass Cloth - (Material No.05TAB1) with TIE WRAP(S) as an alternative to the shrinkable sleeve (2).
(4) Electrical connections:

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. IF YOU MAKE AN ERROR WHEN YOU CONNECT THE WIRES YOU WILL CAUSE DAMAGE TO EQUIPMENT.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(a) Connect the electrical connections (3) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(5) If removed, install the related temperature sensor.
(6) Attach the identification and warning labels and the electrical wires of the heater element (1) with the cable-ties.

Subtask 30-71-56-865-057-A ** ON A/C NOT FOR ALL

B. 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/WASTE WIP-HEATER-LINE	31DW	D03
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02
2001VU	WASTE WIP-HEATER-LINE	22DU	E04
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
2001VU	WASTE WIP-HEATER-CTL	10DU	E03

Subtask 30-71-56-710-050-B ** ON A/C NOT FOR ALL

C. The applicable heater elements are controlled and monitored by control unit 80DU. Nevertheless, do the BITE test of the waste-water ice-protection system (Ref. AMM TASK 30-71-00-710-002).

5. Close-up
Subtask 30-71-56-410-050-F ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the following cargo-compartment floor panels
(Ref. AMM TASK 53-42-14-400-001):
(a) FOR [87DU] (HEATER-TAPE, WASTE WTR)
151SG,
(b) FOR [88DU] (HEATER-TAPE, WASTE WTR)
151SG, 151DF,
(c) FOR [89DU] (HEATER-TAPE, WASTE WTR)
151DF, 151GF
(d) FOR [90DU] (HEATER-TAPE, WASTE WTR)
151GF.
(2) Set the SERVICE LIGHT switch to OFF.
(3) Close the BULK cargo-compartment door (Ref. AMM TASK 52-30-00-860-006).

Subtask 30-71-56-862-050-A ** ON A/C NOT FOR ALL

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

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