Installation of the Thermostat

TASK 30-72-11-400-001-A
Installation of the Thermostat

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	ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20
No specific	1	SPRAY - COOLING
No specific	AR	TIE WRAP(S)
No specific	Torque wrench: range to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05BAB1)	Threadlocking Adhesive-- Low strength Low viscosity -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
161DW, 171AL

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 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at 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
Thermostat 12DV and Thermostat 14DV ** ON A/C NOT FOR ALL
Thermostat 12DV ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 30-72-11-860-050-A ** 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 ACCESS PLATFORM 2M (6 FT) is set in position at potable-water service panel 171AL.
(3) Make sure that the panel is openend and the drain-control handle is set to the NORM position.
(4) Make sure that the ACCESS PLATFORM 2M (6 FT) is set in position at the aft cargo-compartment door.
(5) Make sure that the aft cargo-compartment door is openend (Ref. AMM TASK 52-30-00-860-001).
(6) Make sure that partition 161DW to get access to the thermostat and terminal block 7510VT (Ref. AMM TASK 25-55-12-000-001).

Subtask 30-72-11-865-054-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-SVCE-PNL	15DV	D01
** ON A/C NOT FOR ALL
2001VU	POT WIP-SVCE-PNL	15DV	D01

4. Procedure
Subtask 30-72-11-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Thermostat
(1) Do an inspection of the component interfaces and the adjacent area.
(2) Put the thermostat-housing (6) on the stud (5).
(3) Put the threaded-sleeve (7) in position.
(4) TORQUE the threaded-sleeve (7) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )

NOTE: A threaded overlap is not required.

(5) Secure the threaded-sleeve (7) with Threadlocking Adhesive-- Low strength Low viscosity - (Material No.05BAB1) .
(6) Install the thermostat-housing cover (3) with the srews (4), the washers (2) and the nuts (1).

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.

(7) Connect the electrical connections (8) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20 to terminal block 7510VT.
(8) Install the electrical wires with the TIE WRAP(S) on the bracket.

Subtask 30-72-11-865-055-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-SVCE-PNL	15DV	D01
** ON A/C NOT FOR ALL
2001VU	POT WIP-SVCE-PNL	15DV	D01

Subtask 30-72-11-710-050-A ** ON A/C NOT FOR ALL

C. Do this test.

ACTION	RESULT
1.At the potable-water service panel:	At the potable-water service panel:
Apply SPRAY - COOLING on and around the housing of thermostat 12DV (14DV).	Examine that fill/drain nipple 11DV (13DV) becomes warm.

Subtask 30-72-11-710-050-B ** ON A/C NOT FOR ALL

C. Do this test.

ACTION	RESULT
1.At the potable-water service-panel:	At the potable-water service-panel:
apply SPRAY - COOLING on and around the housing of the thermostat 12DV.	examine that the fill/drain nipple 11DV becomes warm.

5. Close-up
Subtask 30-72-11-410-050-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Install partition 161DW (Ref. AMM TASK 25-55-12-400-001).
(2) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(3) Make sure that the drain-control handle is in the NORM position and close potable-water service panel 171AL.
(4) Remove the access platform(s).

Subtask 30-72-11-862-050-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 08:23:39 UTC