SANDPIPER PB 1/4 - Manual (Page 13)

pb025nmdl3sm-rev0614 Page 11
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
Before wiring,
remove terminal
block from conduit
connector.
Wiring
Diagram
#2 Terminal
Neutral
(Negative)
#1 Terminal
Power
(Positive)
3rd Terminal
for ground.