520-222-000
1/04 Rev C
Model S30 Metallic Design Level 1 Page 21
SOLENOID SHIFTED AIR
DISTRIBUTION VALVE OPTION
Warren Rupp’s solenoid shifted, air
distribution valve option utilizes electrical
signals to precisely control your
SANDPIPER’s speed. The solenoid coil
is connected to a customer - supplied
control. Compressed air provides the
pumping power, while electrical signals
control pump speed (pumping rate).
OPERATION
The Solenoid Shifted SANDPIPER has
a solenoid operated, air distribution valve
in place of the standard SANDPIPER’s
pilot operated, air distribution valve.
Where a pilot valve is normally utilized
to cycle the pump’s air distribution valve,
an electric solenoid is utilized. As the
solenoid is powered, one of the pump’s
air chambers is pressurized while the
other chamber is exhausted. When
electric power is turned off, the solenoid
shifts and the pressurized chamber is
exhausted while the other chamber is
pressurized. By alternately applying and
removing power to the solenoid, the
pump cycles much like a standard
SANDPIPER pump, with one exception.
This option provides a way to precisely
control and monitor pump speed.
BEFORE INSTALLATION
Before wiring the solenoid, make certain
it is compatible with your system
voltage.
Solenoid Connector
#2 Terminal
Neutral
(Negative)
#1 Terminal
Power
(Positive)
3rd Terminal
for ground.
Wiring
Diagram
Before wiring,
remove terminal
block from conduit
connector.
