SANDPIPER M1F Metallic - Manual (Page 22)

M1fmdl1sm-rev0214 Model M1F Metallic Page 20
SOLENOID SHIFTED AIR
DISTRIBUTION VALVE OPTION
MARATHON’s solenoid shifted,
air distribution valve option utilizes
electrical signals to precisely control
your MARATHONs 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 MARATHON has a
solenoid operated, air distribution valve
in place of the standard MARATHONs
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 MARATHON 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.