Description
The Model 261 series
Alternating Relay is designed
for duplex pumping systems
where it is desirable to
equalize pump run time. The
solid-state alternating
circuit drives an internal
electromechanical relay. A
continuous power source and
control switch are required.
The control switch (float,
pressure or other isolated
contact) is connected between
the L1 terminal and the
control terminal. Each time
the control switch is opened
the output contacts will
change states. Indicator
lights on the case show the
internal relay status. On the
optional toggle switch
versions, the toggle switch
is set to the ALTERNATE
position. Setting the switch
to Load 1 or Load 2 will lock
the relay in position,
preventing alternation.