Operating Instructions And Parts Manual
7
Notes
system is reset).
Functionally, the liquid in the basin
rises and trips the first float, but the
pumps do not turn ON. As the liquid
level rises, it trips the second float,
activating one of the pumps. Once the
liquid level recedes and no longer trips
the second float, the pump will turn
OFF. If the second float is tripped
again, the other pump will turn ON.
If for some reason the liquid level
increases past the second float and
trips the third float, both pumps turn
ON and trips the alarm.
Under normal circumstances, the first
pump will handle the flow after the
second float is tripped. In those cases,
the liquid level will recede until it
drops the lower float. This action turns
the pump OFF. The next time that the
liquid level rises, the other pump turns
ON. This alternates the pumps; this
prevents lock-up and extends the lifer
of both pumps.
Available Controls
For 115 volt only, a wide angle float
switch can be supplied with a plug-
thru series plug.
For 230 volt Simplex units, a NEMA 1
Simplex Controller with a hand-off-
auto switch and run light can be
supplied. This is supplied with a wide-
angle switch for automatic operation.
For 230 volt Duplex units, a NEMA 1
control panel can be supplied with a
hand-off-auto switches, run lights,
pump alternator, and an alarm bell.
This is supplied with a three float
switch system for automatic operation.
General Information
Sewage Pump Systems:
Simplex System
A simplex system consists of one pump,
its control switch, and one basin. It is
used in applications where less than six
toilets (units) are discharged into a
basin. The simplex unit is generally
operated with a contactor to turn the
pump ON and OFF. The contactor is
activated by a single pole float switch.
The float switch is a wide-angle
differential switch that rises with the
liquid level and turns the pump ON. As
the liquid level decreases, the float
lowers and turns the pump OFF. The
switch differential is 120º.
Sewage Pump Systems:
Duplex System
A duplex system is used in applications
where more than six toilets (units) are
discharged into a basin. However, each
pump should be sized to handle the
entire flow in case one pump fails. The
duplex unit is controlled by a NEMA 1
control panel that has an automatic
alternator, run lights, hand-off-auto
switches, and an alarm bell. The duplex
control panel is supplied with three
float switches. The floats are to be
positioned so that the lower float
turns the pumps OFF. The second float
alternates turning first one pump ON
and then the other pump ON. The
third float will turn
BOTH
pumps ON in
case one pump cannot handle the
flow. The third float will also sound
the alarm (which remains on until the
2
Operating Instructions And Parts Manual
Installation
Always disconnect the power
source before attempting to
install, service, relocate or
maintain the pump. Never touch sump
pump, pump motor, water or discharge
piping when pump is connected to
electrical power. Never handle a pump
or pump motor with wet hands or when
standing on wet or damp surface or in
water. Fatal electrical shock could occur.
Some models of this product include a
grounded plug for quick installation
anywhere a grounded outlet is
accessible. Some models must be
incorporated into the building’s
electrical system. Models without plugs
must be connected to a grounded
circuit. The circuit should be equipped
with a ground fault interrupter device.
All models without plug-in power
cords systems must be installed by a
qualified electrician. All models with a
plug-in power cords system should still
have a qualified electrician inspect the
outlet being used to ensure proper
wiring.
The control switch is a wide-angle
system which prevents short cycling of
the pump motor and the
consequential problems that short
cycling can cause. The switch can be
mounted on the discharge pipe (just
above the pump discharge flange). See
illustrations for switch mounting
arrangements.
Grounding
Blade
Grounded
Outlet
Power
Cord
Switch
Cord
TEST
RESET
Figure 3
Figure 2 - Duplex System
Figure 1 - Simplex System
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