Potable Water System - Relief Pressure Failure

TASK 38-41-00-810-803-A
Potable Water System - Relief Pressure Failure

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 38-41-00-710-001	Operational Test of the Air Supply System (with ground air supply)
AMM 38-41-00-820-001	Adjustment of the Pressure Reducing and Relief Valve
AMM 38-41-43-000-001	Removal of the Pressure Reducing Valve
AMM 38-41-43-400-001	Installation of the Pressure Reducing Valve

3. Fault Confirmation
Subtask 38-41-00-710-054-A

A. Do the test of the potable water- air supply system AMM 38-41-00-710-001.

4. Fault Isolation
Subtask 38-41-00-810-052-A

A. If the cracking pressure of the VALVE-PRESSURE REDUCING [4200MM] is incorrect:

(1) If the fault continues:

replace the VALVE-PRESSURE REDUCING [4200MM] , AMM 38-41-43-000-001 and AMM 38-41-43-400-001.

5. Close-up
Subtask 38-41-00-710-055-A

A. Do the test as given in paragraph 3. A. and make sure that system operates correctly.

[Rev.8 from Aug 2018] 2026.04.04 04:34:17 UTC