Barnes SE51A, Installation And Operation Manual

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Figure 2 shows a typical installation of an “A” version fl oat,
(an “AU” version will attach to the pump), using a piggy-back
plug.
General Comments:
1) Never work in the sump with the power on.
2) Level controls are factory set for a pumping differential of 9
inches. If that is the cycle desired, simply circle the discharge
pipe with the pipe mounting strap, feed the end through the
worm drive, and tighten with a screwdriver. Be certain that the
level control cannot hang up or foul in it’s swing. Also, make
certain the top of the pump is still submerged when the level
control is in the ‘off’ mode.
3) If a higher pump differential is needed, grip the cord near
the neck of the fl oat, then using the other hand, exert a
steady force on the lower edge of the cable clamp. The cable
clamp should slide up to the new pivot point. Attach the level
control to the discharge hose in the manner described above.
4) Plug the level control plug into the receptacle, then plug
the pump into the piggyback plug. One cycle of operation
should be observed, so that any potential problems can be
corrected.
5) It is recommended that the fl oat should be set to insure
that the sump well liquid level never drops below the top of
the motor housing.
6.) Figure 3 shows a typical connection for pumps with
the wide angle fl oat and piggy-back plug. For manual and
automatic operations.
Automatic - Plug fl oat cord into outlet, then plug pump
cord into fl oat cord.
Manual - Plug pump cord directly int outlet.
C-4) Electrical Connections:
C-4.1) Power and Control Cable:
The cord assembly mounted to the pump must not be modifi ed
in any way except for shortening to a specifi c application.
Any splice between the pump and the control panel must be
made in accordance with all applicable electric codes. It is
recommended that a junction box, if used, be mounted outside
the sump or be of at least Nema 4 (EEMAC-4) construction if
located within the wet well.
Do not use the power or control
cable to lift pump. NOTE: The white wire is NOT a neutral
or ground lead, but a power carrying conductor.
C-4.2) Overload Protection :
C-4.2-1) Three Phase (Optional) -
The normally closed
(N/C) thermal sensor is embedded in the motor windings and
will detect excessive heat in the event an overload condition
occurs. The thermal sensor will trip when the windings become
too hot and will automatically reset itself when the pump motor
cools to a safe temperature. It is recommended that the thermal
sensor be connected in series to an alarm device to alert the
operator of an overload condition, and/or the motor starter coil
to stop the pump. In the event of an overload, the source of this
condition should be determined and rectifi ed immediately.
DO
NOT LET THE PUMP CYCLE OR RUN IF AN OVERLOAD
CONDITION OCCURS !
120 Volt 1 Phase
Automatic
240 Volt 1 Phase
FIGURE 3
Manual
Manual
Automatic
TYPICAL INSTALLATION WITH WIDE ANGLE
LEVEL CONTROL
FIGURE 2