Cleaning of a Blocked Sink Drain - Valve (Air Stop Valve)

TASK 38-32-00-100-004-A
Cleaning of a Blocked Sink Drain - Valve (Air Stop Valve)

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. 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 38-32-41-000-001-A	Removal of the Drain Valve (Air Stop Valve) in the Lavatories
TASK 38-32-41-000-802-A	Removal of the Drain Valve (Air Stop Valve) in the Galleys
TASK 38-32-41-400-001-A	Installation of the Drain Valve (Air Stop Valve) in the Lavatories
TASK 38-32-41-400-802-A	Installation of the Drain Valve (Air Stop Valve) in the Galleys

3. Job Set-up
Subtask 38-32-00-861-056-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-42-00-861-001).

Subtask 38-32-00-010-056-A

B. Get Access
(1) Get access to the lavatory and the galley.

4. Procedure
Subtask 38-32-00-100-052-A

A. Cleaning of the Drain Valve
(1) Remove the drain valve (air stop valve) (Ref. AMM TASK 38-32-41-000-001) and (Ref. AMM TASK 38-32-41-000-802).
(2) Send the drain valve (air stop valve) to the workshop for cleaning.
(3) Install the drain valve (air stop valve) (Ref. AMM TASK 38-32-41-400-001) and (Ref. AMM TASK 38-32-41-400-802).

5. Close-up
Subtask 38-32-00-410-058-A

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

Subtask 38-32-00-862-056-A

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-42-00-862-001).

Subtask 38-32-00-942-054-A

C. Put the system back to the serviceable condition.

[Rev.10 from 2021] 2026.04.02 07:19:38 UTC