Chapter 7 Compressor Parts
65
Hose Ports
B1
A1
C
B
A
PORT
DESCRIPTION
A
Air signal supply, at shutdown only to A1
A1
Signal from "A" at shutdown to exhaust air from compressor
system
B
Outlet regulated air pressure signal, present only when there is
no demand for air. (i.e. Closed service valve or air pressure
dead headed into a tool that is not being used.) Maximum
pressure in this line is 50 PSIG.
B1
Air signal from "B" regulator outlet to compressor inlet valve
regulating port. Air signal modulated air opening from open to
closed when there is no demand for air.
C
System air pressure signal port to air pressure regulator inlet.
Air pressure is present anytime there is air pressure in the
system.
