Motor Start Relay Failure

TASK 38-31-00-810-841-A
Motor Start Relay Failure

1. Possible Causes

RELAY [36MG]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 38-31-00-710-009	Operational Test of the Toilet Unit
AMM 38-31-00-740-001	BITE Test of the Vacuum Toilet System
AMM 38-31-36-000-001	Removal of the Motor Start Relay
AMM 38-31-36-400-001	Installation of the Motor Start Relay
MCDU Display

3. Fault Confirmation
Subtask 38-31-00-710-129-A ** ON A/C NOT FOR ALL

A. Do a test of the vacuum toilet system AMM 38-31-00-710-009.

Subtask 38-31-00-740-076-A ** ON A/C NOT FOR ALL

B. Do the procedure to get access to the CFDS SYSTEM REPORT/TEST menu PAGE AMM 38-31-00-740-001.

4. Fault Isolation
Subtask 38-31-00-810-143-A ** ON A/C NOT FOR ALL

A. If the LAST/PREVIOUS LEGS Report gives the maintenance message
MOTOR START RELAY (36MG):

replace the RELAY [36MG] , AMM 38-31-36-000-001 and AMM 38-31-36-400-001.

Subtask 38-31-00-710-130-A ** ON A/C NOT FOR ALL

B. Test
(1) Do the test as given in paragraph 3. A. to check the correct operation.
(2) After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:34:15 UTC