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SELECTING AND WIRING
PUMP CONTROL PANELS AND SWITCHES
FLOAT SWITCH TYPES
High Temp floats can be purchased for High Temp ap-
plications. They are normally open (NO) for pump down
operations.
These wide-angle, pump down switches may be used as
direct connected pump switches or as control switches.
SETTING THE FLOAT SWITCHES
There are no absolute rules for where to set the float
switches, it varies from job to job.
Suggested Rules to Follow:
All floats should be set below the Inlet pipe!
Off Float: Best: set so the water level is always above the
top of the pump (motor dome). Next Best: set so the wa-
ter level is not more than 6" below the top of the pump.
On Float: set so the volume of water between the On
and Off floats allows pumps of 1½ HP and under to oper-
ate for 1 minute minimum. Two (2) HP and larger pumps
should run a minimum of 2 minutes. Basin literature
states the gallons of storage per inch of basin height.
Lag/Alarm Float(s): should be staggered above the
Off and On floats. Try to use most of the available stor-
age provided by the basin, save some space for reserve
storage capacity. See Diagrams and Charts in Float Switch
Chart Section.
PANEL WIRING DIAGRAMS
Our control panels are shipped with instructions and
wiring diagrams. Use those instructions in conjunction
with this IOM. Electrical installation should be performed
only by qualified technicians. Any problem or questions
pertaining to another brand control must be referred
to that control supplier or manufacturer. Our technical
people have no technical schematics or trouble shooting
information for other companies' controls.
ALARMS
We recommend the installation of an alarm on all Waste-
water pump installations. Many standard control panels
come equipped with alarm circuits. If a control panel is
not used, a stand alone high liquid level alarm is avail-
able. The alarm alerts the owner of a high liquid level in
the system so they can contact the appropriate service
personnel to investigate the situation.
SINGLE PHASE PUMPS
Single phase (1Ø) pumps may be operated using a
piggyback or hard wired float switch, a contactor, or a
Simplex or Duplex control panel. See Figures 1 and 4.
All
/
and ½ HP, 115 or 230 volt pumps, and some ¾ and
1
3
1 HP pumps, are supplied with plug style power cords.
They may be plugged into piggyback float switches for
simple installations. It is allowable to remove the plugs
in order to hardwire or connect to a Simplex or Duplex
controller. Removing the plug neither voids the warranty
nor violates the agency Listings. See Figure 4.
PLUG-CONNECTED UNITS MUST
WARNING
BE CONNECTED TO A PROPERLY
GROUNDED, GROUNDING TYPE
RECEPTACLE.
ON NON-PLUG UNITS, DO NOT
REMOVE CORD AND STRAIN RELIEF.
DO NOT CONNECT CONDUIT TO
Hazardous voltage
PUMP.
can shock, burn or
cause death.
Pumps with bare lead power cords can be hard-wired to
a float switch, wired to a 1Ø contactor, a Simplex con-
troller or a Duplex controller. Always verify that the float
switch is rated for the maximum run amperage, maxi-
mum starting amperage, and the HP rating on the pump.
Single-phase wastewater pumps contain on-winding
overloads, unless noted on the pump nameplate. See
Figure 1.
SINGLE PHASE CONTROL PANELS:
Control panels are available as Simplex (controls 1
pump) or Duplex (controls 2 pumps). Our standard SES
Series Panels are available with many standard features
and can be built with our most popular options. We
also custom build panels which offer many more design
options than the SES panels. Custom control panels are
available in many different configurations. Custom panel
quote requests may be forwarded to Customer Service
through any authorized distributor.
Our "SES" Duplex panels feature a solid-state printed cir-
cuit board design with standard high level alarm circuits.
Other standard features are: an auxiliary dry alarm con-
tact for signaling a remote alarm and float switch position
indicator lights.
INSTALLATION
Connect the pump(s) to the guide rail pump adapters
or to the discharge piping. Slide rail bases should be
anchored to the wetwell floor.
Complete all wiring per the control panel wiring dia-
grams and NEC, Canadian, state, provincial and/or local
codes. This a good time to check for proper rotation of
the motors/impellers.
DO NOT PLACE HANDS IN PUMP
DANGER
!
SUCTION WHILE CHECKING
MOTOR ROTATION. TO DO SO WILL
CAUSE SEVERE PERSONAL INJURY.
Always verify correct rotation. Correct
rotation is indicated on the pump cas-
ing. Three phase motors are reversible.
It is allowable to bump or jog the motor
Hazardous Machinery
for a few seconds to check impeller rota-
tion. It is easier to check rotation before
installing the pump. Switch any two
power leads to reverse rotation.
Lower the pump(s) into the wetwell.
Check to insure that the floats will operate freely and not
contact the piping.
OPERATION
Once the piping connections are made and checked you
can run the pumps.
Piggyback Switch Operation – Plug the piggyback
switch into a dedicated grounded outlet and then plug
the pump into the switch. Test the pump by filling the
wetwell until the pump goes On. If the pumps run but
fail to pump, they are probably air locked, drill the relief
holes per the instructions in the Piping Section.
Check the operating range to insure a minimum one
minute run time and that the pump goes Off in the cor-
rect position.
Control Panel Operation – Fill the wetwell with clear
water.
5
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