5
FORM NO. L-20328-B-1112
AIR CONNECTIONS
NOTE
For quick response, Nexen recommends a quick exhaust valve and short air lines between the Control Valves and
the FMCBE. Align the air inlet ports to a down position to allow condensation to drain out of the air chambers.
4-WAY CONTROL VALVE
1. If the brake is to be set when the solenoid is
de-energized, connect the port marked
2
to the brake
and the port marked
4
to the clutch (See Figure 3).
2. Connect the air supply line to the inlet port (marked
1
)
(See Figure 3).
5-WAY CONTROL VALVE
1. If the brake is to be
set and the clutch is to be
OFF
when the solenoid is de-energized, connect the port
marked
4
to the brake and the port marked
2
to the
clutch (See Figure 4).
2. Connect the air supply line to the port marked
3
and
other air pressure supply line to the port marked
5
(See Figure 4).
3-WAY CONTROL VALVES
3-Way Normally Open (N.O.) and Normally Closed (N.C.)
Control Air Inlet Mounts
1. Install a 3-Way N.O. Control into the brake inlet port
and a 3-Way N.C. Control into the clutch inlet port
(See Figure 5).
2. Connect an air supply line to the inlet port (marked
IN
)
on top of the 3-Way N.O. Control and an air supply line
to the inlet port (marked
IN
)
on the side of the 3-Way
N.C. Control (See Figure 5).
NOTE
When a 3-Way N.O. Control is de-energized, air flows
directly to the brake. When a 3-Way N.O. Control is
energized, air exhausts from the brake.
When a 3-Way N.C. Control is de-energized, air
exhausts from the clutch. When a 3-Way N.C.
Control is energized, air flows to the clutch.
FIGURE 3
FIGURE 4
FIGURE 5
3-Way N.O.
Control
Air to
Clutch
Air to
Brake
3-Way N.C.
Control
