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SETTING THE FLOAT SWITCHES
There are no absolute rules for where to set the float switch-
es, 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 water 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 operate 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 storage 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 Wastewa-
ter 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 available. 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 piggy-
back 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
1
3
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. Re-
moving 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 PUMP.
Hazardous voltage
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 controller or
a Duplex controller. Always verify that the float switch is rated
for the maximum run amperage, maximum starting amper-
age, and the HP rating on the pump. Single-phase wastewa-
ter 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 con-
figurations. Custom panel quote requests may be forwarded
to Customer Service through any authorized distributor.
Our "SES" Duplex panels feature a solid-state printed circuit
board design with standard high level alarm circuits. Other
standard features are: an auxiliary dry alarm contact 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 diagrams
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 casing.
Three phase motors are reversible. It is
allowable to bump or jog the motor for a
Hazardous Machinery
few seconds to check impeller rotation. 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 correct position.
Control Panel Operation – Fill the wetwell with clear water.
Use the pump H-O-A (Hand-Off-Automatic) switches in
Hand to test the pumps. If they operate well in Hand pro-
ceed to test Automatic operation. If the pumps run but fail to
pump, they are probably air locked, drill the relief holes per
the instructions in the Piping Section.
Place Control Panel switch(es) in Automatic position and
thoroughly test the operation of the ON, OFF, and Alarm
5
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