SANDPIPER M15 Metallic - Manual (Page 22)

m15mdl1sm-rev0713 Model M15 Metallic Page 20
S O L E N O I D S H I F T E D A I R
DISTRIBUTION VALVE OPTION
MARATHON’s solenoid shifted,
air distribution valve option utilizes
electrical signals to precisely control
your MARATHON’s speed. The solenoid
coil is connected to the MARATHON
Solenoid Rate Controller/Batch Control,
or 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 MARATHON’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 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.