A320 LP and HP Ground connectors
Hi
Could somebody explain a few queries that I have. Having looked at the Pneumatic Schematic and reading the description. I am puzzled that on the schematic it only shows the external HP inlet.
1. So if the LP ground connector is attached to the a/c what indicators do you have that it is connected and providing conditioned air to the aircraft. I assume this is done to cater for a u/s APU or where the APU due to a malfunction cannot provide the air.
2. The description mentions that the HP ground connector can also be used for air conditioning. I thought it was only meant for engine starts. There is no HP connection shown on the schematics, where as the LP connector shows LP air piped in to the mixing manifold. What is the path of the HP air from the time it leaves the external source to the cabin and flight deck?
Thanks