To Slow Operation of the Crossbleed Valve

TASK 36-12-00-810-806-A
To Slow Operation of the Crossbleed Valve

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 36-12-00-710-001	Operational Test of the APU Bleed Air Supply and Crossbleed Systems
AMM 36-12-52-000-001	Removal of the Crossbleed Valve
AMM 36-12-52-000-002	Removal of the Crossbleed Valve Actuator
AMM 36-12-52-400-001	Installation of the Crossbleed Valve
AMM 36-12-52-400-002	Installation of the Crossbleed Valve Actuator

3. Fault Confirmation
Subtask 36-12-00-710-058-A ** ON A/C NOT FOR ALL

A. Do the operational test of the APU bleed-air supply and the crossbleed systems AMM 36-12-00-710-001.

4. Fault Isolation
Subtask 36-12-00-810-059-A ** ON A/C NOT FOR ALL

A. If after the test the message X-BLEED MAN CTL is shown on the status page of the lower ECAM display unit:

look at the visual position indicator of the crossbleed valve to make sure that the indicator shows fully closed position,
set the X-BLEED selector switch on AIR COND overhead panel 30VU to the OPEN position,
do a check of the operation time of the crossbleed valve from fully closed to fully open position .

(1) If the operation time of the crossbleed valve is more than 10 s:

replace the VALVE-X BLEED ACTUATOR AMM 36-12-52-000-002 and AMM 36-12-52-400-002.

(2) If the fault continues:

Subtask 36-12-00-710-059-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:00 UTC