Fuel Center Tank Auto Shutoff Logic

[BoeingMn]

A note from the FCOM of the B737NG
When a center tank fuel pump switch is set to OFF, the auto shutoff logic for that pump is reset.
When the center tank fuel pump switch is set to ON after being OFF, the pump will again activate until the switch is set to OFF or auto shutoff logic deactivates it.

What is the Auto Shutoff Logic and what it does?

Highly appreciating your pro feedback

[Benx737]

The auto shutoff funtion will deactivate center boost pump after time delay 15 second when low boost pump pressure detected (under 18 psi).