Barnes 4SE-L series, Installation And Operation Manual

7

C-4) Electrical Connections:
C-4.1) Power & Sensor Cords:

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 

SENSOR CORDS TO LIFT PUMP.

NOTE: The White Wire Is Not A Neutral Or Ground Lead. 
The Black, White And Red Leads Are Power Carrying
Conductors. The Green Lead Is For Connection To 
Ground.

C-4.2) Overload Protection :
C-4.2-1) Three Phase - 

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 !

C-4.2-2) Single Phase -

 The type of in-winding overload 

protector used is referred to as an inherent overheating 
protector and operates on the combined effect of temperature 
and current. This means that the overload protector will trip out 
and shut the pump off if the windings become too hot, or the 
load current passing through them becomes too high. It will 
then automatically reset and start the pump up after the motor 
cools to a safe temperature. 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 !

C-4.3) Moisture Sensors:

A normally open (N/O) detector is installed in the pump 
seal chamber which will detect any moisture present. It is 
recommended that this detector be connected in series to an 
alarm device or the motor starter coil to alert the operator that 
a moisture detect has occurred. In the event of a moisture 
detect, check the individual moisture sensor probe leads for 

continuity, ( ∞  resistance = no moisture ) and the junction 
box/control box for moisture content. The above situations 
may induce a false signal in the moisture detecting circuit. If 
none of the above test prove conclusive, the pump(s) should 
be pulled and the source of the failure identifi ed and repaired. 

IF A MOISTURE DETECT HAS OCCURRED SCHEDULE 
MAINTENANCE AS SOON AS POSSIBLE.

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 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, mo-
mentarily 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 momen-
tarily 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) Identifi cation Plate:

Record the numbers from the pump identifi cation plate for 
future reference.

D-3.1) 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.

D-3.2) Pump-Down Test

:

After the pump has been properly wired and lowered into the 
basin, sump or lift station, it is advisable to check the system 
by fi lling with liquid and allowing the pump to operate through 
its pumping cycle. The time needed to empty the system, or 
pump-down time along with the volume of water, should be 
recorded.