Crane Barnes 3SE3024L Installation And Operation Manual Download Page 7

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C-4) Electrical Connections:
C-4.1) Power Cord:

The cord assembly mounted to the pump must not be modi-

fi 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 cable to lift
pump.

NOTE: THE WHITE WIRE IS NOT A NEUTRAL OR

GROUND LEAD, BUT A POWER CARRYING CONDUCTOR.
THE GREEN LEAD IS FOR CONNECTION TO GROUND.

C-4.2) Sensor Cord:

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 control cable to lift
pump.

NOTE: THE WHITE WIRE IS NOT A NEUTRAL OR

GROUND LEAD, BUT A POWER CARRYING CONDUCTOR.
THE GREEN LEAD IS FOR CONNECTION TO GROUND.

C-4.3) Overload Protection :
C-4.3-1) Single and Three Phase -

The normally closed

(N/C) thermal sensor is embedded in the motor windings and
will detect excessive heat in the event and overload condition
occurs. The thermal sensor will trip when the windings become
to 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!

If current through the temperature sensor exceeds the values
listed, an intermediate control circuit relay must be used to
reduce the current or the sensor will not work properly.

TEMPERATURE SENSOR ELECTRICAL RATINGS

Volts

Continuous

Amperes

Inrush

Amperes

220-240

1.50

15.0

440-480

0.75

7.5

575-600

0.60

6.0

C-4.4) Wire Size:

Consult a qualifi ed electrician for proper wire size if additional
power cable length is required. See table for electrical
information.

SECTION: D START-UP OPERATION
D-1) Check Voltage and Phase:

Before operating pump, compare the voltage and phase
information stamped on the pump identifi cation plate to the
available power.

D-2) Check Pump Rotation:

Before putting pump into service for the fi rst time, the motor
rotation must be checked. Improper motor rotation can
result in poor pump performance and can damage the motor
and/or pump. To check the rotation, suspend the pump
freely, momentarily apply power and observe the “kickback”.
“Kickback” should always be in a counter-clockwise direction
as viewed from the top of the pump motor housing.

D-2.1) Incorrect Rotation for Three-Phase Pumps:

In the event that the rotation is incorrect for a three-phase
installation, interchange any two power cable leads at the
control box.

DO NOT

change leads in the cable housing in the

motor. Recheck the “kickback” rotation again by momentarily
applying power.

D-2.2) Incorrect Rotation for Single-Phase Pumps:

In the unlikely event that the rotation is incorrect for a single
phase pump, contact a CP&S Service Center.

D-3) Pump Reference Information:
D-3.1) Identifi cation Plate:

Record the numbers from the pump identifi cation plate.

D-3.2) Insulation Test:

Before the pump is put into service, an insulation (megger)
test should be performed on the motor. The resistance values
(ohms) as well as the voltage (volts) and current (amps) should
be recorded.

MODEL

VOLT/PH Hz

RPM

(Nom)

NEMA

START

CODE

INSUL.

CLASS

FULL

LOAD

AMPS