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Pneumatic Crossover Setup with
Depressurization Kit
(Model 970070)
Install the pneumatic crossover and depressurization
kit as shown in Fig. 4. Refer also to manual 310293.
During system operation, as the ram approaches the
drum bottom, the top of the ram contacts the limit valve
switch. The switch shuts off air to the ram air motor via
a 4–way piloted air valve. As the valve stops air to one
air motor, it starts air to the other air motor. This allows
constant material flow and changing out of material
drums.
KEY
A
2–Way Valves (2)
B
Regulator
C
4–Way Piloted Air Valve
D
Limit Valves (2)
E
Main Air Inlet
F
Depressurization Kit
Fig. 4
10
310316
System Setup
Pneumatic Crossover Setup (Model 970070)
B
C
E
The depressurization kit allows system depressuriza-
tion. During periods of inactivity, depressurization may
prevent material breakdown in the system.
NOTE: Air is supplied to each ram at all times. Air is
only toggled between air motors.
NOTE: The position of the limit valve (D) on the ram
determines when the ram air motor is turned on and
off. During operation, this position can be adjusted as
desired. See Fig. 4.
A
D
F
8887A
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