PPRuNe Forums - A320 Center Tank Pumps

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arrow28

17th Apr 2017 01:55

A320 Center Tank Pumps

Hi All

Why does the A320 center tank pumps run for 5 mins after the center tank runs dry?

Thanks

Goldenrivett

17th Apr 2017 08:49

Hi arrow28,

Technically the 5 mins timer doesn't start when the tank is "dry". It starts from when the CTR TK LO LVL sensor is triggered. (DSC-28-10-30 Engine Feed CENTER TANK PUMPS CONTROL LOGIC diagram.)
There is still a small amount of fuel in the centre tank which can normally be scavenged out in 5 mins.

arrow28

18th Apr 2017 03:00

GR
Would you happen to know at what levels the LO LVL sensors are triggered.

IFixPlanes

18th Apr 2017 06:21

Is this a question? :confused:

Goldenrivett

18th Apr 2017 10:25

If that was a question, then this is an answer.

Quote:

.... at what levels the LO LVL sensors are triggered.

About 100 kgs +/- 100 depending on attitude.

arrow28

18th Apr 2017 23:49

GR
Thank you.

FlightDetent

19th Apr 2017 17:19

IFixPlanes: Hi. Since you'd made your self known here :) could we have your comment on these "sequence valves" http://www.pprune.org/tech-log/59343...nk#post9738523? Pretty please...

IFixPlanes

19th Apr 2017 17:41

you are welcome...;)

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