7
In the event of an overload, the source of this condition
should be determined and rectified immediately.
DO NOT
LET THE PUMP CYCLE OR RUN IF AN OVERLOAD
CONDITION OCCURS !
C-4.2-2) Single Phase (Standard) -
The type of in-wind-
ing 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 rectified 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
110-120
3.00
30.0
220-240
1.50
15.0
440-480
0.75
7.5
C-4.3) Wire Size:
Consult a qualified electrician for proper wire size if addi-
tional 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 identification plate to the
available power.
D-2) Check Pump Rotation:
Before putting pump into service for the first 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 Barnes Pumps Service Center.
D-3) Start-Up Report:
Included at the end of this manual are two start-up report
sheets, these sheets are to be completed as applicable. Return
one copy to Barnes Pumps 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) Identification Plate:
Record the numbers from the pump identification 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 filling 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.
MODEL
NO
HP VOLT/PH Hz RPM
(Nom)
NEMA
START
CODE
FULL
LOAD
AMPS
LOCKED
ROTOR
AMPS
CORD
SIZE
CORD
TYPE
CORD
O.D
inch (mm)
Franklin
Winding
Resistance
Main - Start
G.E.
Winding
Resistance
Main - Start
EH512HT
0.5
120/1
60
3450
M
11.5
34
14/3
SOW
0.530 (13.5)
*1.45 - 6.35
----
EH522HT
0.5
240/1
60
3450
K
5.3
18.5
14/3
SOW
0.530 (13.5)
*1.22 - 5.39
10.10 - 10.16
EH1522HT 1.5
240/1
60
3450
E
9.0
30.6
14/3
SOW
0.530 (13.5)
1.67 - 3.45
2.56 - 12.36
EH1592HT 1.5 200/240/3 60
3450
H/F
7.8/7.0
29.2/18.7
14/4
SOW
0.570 (14.5)
3.59
5.25
EH1542HT 1.5
480/3
60
3450
K
3.5
14.6
14/4
SOW
0.570 (14.5)
14.36
20.44
Winding Resistance ± 5%, measured from terminal block. OPump Rated for Operation at ± 10% Voltage at motor.
(*) When checking winding resistance of these motors, disconnect leads to soild state switch & capacitor (if applicable). Motor for pump
model EH52HT has two main windings. Resistance values should read as follows: MAIN 1 + START = 8.43 ohms,
MAIN 2 + START = 8.43 ohms.
OPTIONAL - Temperature sensor cord for 3 phase models is 14/3 SOW, .530 (13.5mm) O.D.
