Emerson L20 - Low Air Pressure

28 DCM00003 REV. 07
4.3 Low Air Pressure
The control system and its components were designed to run with a clean air supply of
from 90 to 120 psi. The control system monitors the air pressure from the low air pressure
switch (optional). The low pressure threshold is set from the controller. An alarm occurs
when incoming line pressure the drops below the set pressure.