a320 Pack valve fault
Thread Starter
Joined: Jun 2003
Posts: 133
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From: here
a320 Pack valve fault
Hi.
Had the above fault and associated pack was locked out by Maint.
On the bleed page the associated bleed valve on the same side was showing closed, however it indicated bleed pressure of approx 40 psi and precooler outlet temp of 100 degrees.
If the valve is closed why are these indications present?
Anyone??
Cheers
Had the above fault and associated pack was locked out by Maint.
On the bleed page the associated bleed valve on the same side was showing closed, however it indicated bleed pressure of approx 40 psi and precooler outlet temp of 100 degrees.
If the valve is closed why are these indications present?
Anyone??
Cheers
Joined: Oct 2004
Posts: 419
Likes: 0
From: oop north
The pack valve was locked closed, you still had bleed air available up to the valve , the pack valve controls bleed air flowing into the pack it doesnt control bleed air from the engine, thats regulated by the PRV and the HPV.
Joined: Apr 2005
Posts: 569
Likes: 0
From: Stockholm Sweden
The engine bleed valve opens and fills the pneumatic duct with hot air at 40psi. There are no leaks, and the pack is off. The bleed valve will modulate towards closed to maintain the pressure, and may close completely.
If you opened the Xfeed valve, the bleed valve would immediately open again.
Not unusual. On the B767 there is a statement in the MEL that this will happen.
If you opened the Xfeed valve, the bleed valve would immediately open again.
Not unusual. On the B767 there is a statement in the MEL that this will happen.
