Gnd/Overfill
Switched
Line
N.O. Digital
Valve
Solenoid
N.O. Digital
Valve
Solenoid
Neutral
Port 2 Output
Port 3 Output
Air Purge
Valve
Solenoid
Top Float Switch
Neutral
High
Low
Air Eliminator
Note 2: With only two states returned from the air eliminator, flow must be completely stopped to
purge air.
To purge air by only slowing the rate, a 3 output air eliminator head must be used.
Note 1: When the level drops below Low, the power will be removed from the digital valves, stopping
flow before the air eliminator is completely drained.
A
B
Terminal
Number
Figure 3.16 FCM II Field Wiring: 2 Output Air Eliminator