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6
C-4.2) Overload Protection:
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 tempera-
ture. 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
C-4.3) Wire Size:
Consult a qualifi ed electrician for proper wire size if additional
power cable length is required. See table for electrical informa-
tion.
SECTION: D START-UP OPERATION
D-1) Check Voltage and Phase:
Before operating pump, compare the voltage and phase infor-
mation 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 Single-Phase Pumps:
In the unlikely event that the rotation is incorrect for a single
phase pump, contact a Barnes Service Center.
D-3) Start-Up Report:
Included at the end of this manual is a start-up report sheet,
this sheet is to be completed as applicable. Return one copy
to Barnes and store the second in the control panel or with
the pump manual if no control panel is used. It is important to
record this data at initial start-up since it will be useful to refer to
should servicing the pump be required in the future.
D-3.1) Identifi cation Plate:
Record the numbers from the pump identifi cation plate on both
START-UP REPORTS provided at the end of the manual for
future reference.
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 on the start-up report.
D-3.3) 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
on the start-up report.
SECTION E: PREVENTATIVE MAINTENANCE
As the motor is oil fi lled, no lubrication or other maintenance
is required, and generally Barnes pumps will give very reliable
service and can be expected to operate for years on normal
sewage pumping without failing. However as with any mechani-
cal piece of equipment a preventive maintenance program is
recommended and suggested to include the following checks:
1) Inspect motor chamber for oil level and contamination and
repair as required per section F-1.
2) Inspect impeller and body for excessive build-up or
clogging and repair as required per section F-2.
3) Inspect motor, bearings and shaft seal for wear or leakage,
replace as required per section F-3.
MODEL
NO
HP VOLT PH/Hz RPM
(Nom)
NEMA
START
CODE
FULL
LOAD
AMPS
LOCKED
ROTOR
AMPS
CORD
SIZE
CODE
TYPE
CORD
O.D.
± .02 (.5)
in (mm)
WINDING
RESISTANCE
MAIN -- START
3SF1524HD 1.5 240 1 / 60 1750 B 12.6 23.0 10/3 SOW 0.69 (17.5) 1.5 -- 5.0
3SF2024HD 2.0 240 1 / 60 1750 B 14.5 29.0 10/3 SOW 0.69 (17.5) 1.5 -- 5.0
Winding Resistance ± 5%, measured from terminal block.
Pump rated for operation at ± 10% voltage at motor.
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