s1fmdl1sm-REV1207 Model S1F Metallic Page 19
S O L E N O I D S H I F T E D A I R
DISTRIBUTION VALVE OPTION
Warren Rupp’s solenoid shifted,
air distribution valve option utilizes
electrical signals to precisely control
your SANDPIPERs 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 SANDPIPERs
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.
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