Xylem GOULDS LSP03 Directives D'installation, D'utilisation Et D'entretien page 5

Wide angle float switches are the most popular type.
They can be directly connected to a pump or to a con-
trol panel. The "tether length" or the distance from the
switch body to the pivot point controls the On and Off
points and the amount pumped in one cycle. The pivot
point is where the float is attached either to the pump or
the discharge pipe. See Figures 1 - 5.
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 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 stor-
age capacity. See Diagrams and Charts in Float Switch
Chart Section.
PANEL WIRING DIAGRAMS
Our control panels are shipped with instructions and wir-
ing 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 piggy-
back or hard wired float switch, a contactor, or a Simplex
or Duplex control panel. See Figures 1, 2 and 5.
All 1 / and ½ HP , 115 or 230 volt pumps, and some ¾
3
and 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 5.
PLUG-CONNECTED UNITS MUST
WARNING
BE CONNECTED TO A PROPERLY
GROUNDED, GROUNDING TYPE
RECEPTACLE.
ON NON-PLUG UNITS, DO NOT RE-
MOVE 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
controller or a Duplex controller. Always verify that the
float switch is rated for the maximum run amperage,
maximum starting amperage, and the HP rating on the
pump. Single-phase waste water pumps contain on-wind-
ing overloads, unless noted on the pump nameplate. See
Figures 1 and 2.
SINGLE PHASE CONTROL PANELS:
Control panels are available as Simplex (controls 1
pump) or Duplex (controls 2 pumps). Our standard
control 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 op-
tions than the standard 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 standard duplex panels feature a solid-state printed
circuit board design with standard high level alarm cir-
cuits. Other standard features are: an auxiliary dry alarm
contact for signaling a remote alarm and float switch po-
sition indicator lights. Most standard panels are in stock
for immediate delivery.
IN IN IN IN IN IN INST IN INSTALLATION IN SUMP WITHOUT IN IN IN IN N N ST ST ST ST ST ST ST ST ST ST ST ST STAL AL A AL AL AL AL AL AL AL AL AL AL AL LA LA LATI LA LA LA LA LA LA LA LA LA LA LA TI TI TI TI TI TI TI TI TI TI TI TI TION ON ON ON ON ON ON ON ON ON ON ON ON ON I I I I I I I I I I I I I I N N N N N N N N N N N N N N SUMP SU SU SU SU SU SU SU SU SU SU SU SU SU
SL SL SLIDE RAILS SL SL SLID SL SL SL SL SL SL SL SL SL ID ID ID ID ID ID IDE ID ID ID ID ID ID E E E E E E E E E E E E E RA RA RA RAIL RA RA RA RA RA RA RA RA RA RA IL IL IL IL IL IL IL IL IL IL IL ILS L S S S S S S S S S S S S S
Is your basin sized correctly and the proper type for the
location?
Diameter - It must be wide enough to allow the pump
and switch to physically fit and provide room for the
switch to operate freely. The vertical switch models
typically require less diameter than the wide-angle
float models. See "min. basin diameter" in Chart 1.
Depth - It must be deeper than the
CAUTION
minimum depth at which the switch
turns the pump On. As an example, if the pump turns
on at 15" you want to use a basin deeper than 15".
See "On level" in Chart 1.
Style - There are several sump basin
WARNING
styles available. The location of the
sump determines if you require a cover and what type
you require. It is important to keep debris from enter-
ing the sump and clogging the pump. An open sump
in a traffic area such as a basement is dangerous. If
children or pets will be playing in the area a bolt-on or
child-proof cover is recommended.
The pump can be placed directly on the bottom of a poly
or fiberglass sump basin or a concrete sump bottom. If
the bottom is packed gravel the stones must be larger
than ½" (13mm) in diameter and the pump should be
placed on bricks for support.
After connecting the discharge pipe to the pump it can be
lowered into the sump (basin). Always lower the pump by
the handle and the pipe, never by the power cord. Place
the pump against the basin wall so the switch is to the
center. See "Installation Data".
Check to insure all piping connections are tight. The
pipes should be supported by fastening to floor joists or
wall. This will prevent the pump from moving in the
sump. If it moves the switch could get stuck and either
keep the pump running or not let it turn on.
MP MP MP MP MP MP MP MP MP MP MP MP MP W W W W W W W W W W W W W W IT IT IT IT IT IT IT ITHO IT IT IT IT IT IT HO HO HO HO HO HO HO HO HO HO HOUT HO HO UT UT UT UT UT UT UT UT UT UT UT UT UT
5