6
C-3.2) Overload Protection :
C-3.2-1) 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 imme-
diately.
DO NOT LET THE PUMP CYCLE OR RUN IF AN
OVERLOAD CONDITION OCCURS !
C-3.2-2) Single Phase -
The type of in-winding overload pro-
tector used is referred to as an inherent overheating protec-
tor 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-3.3) Moisture Sensors:
A normally open (N/O) detector is installed in the pump seal
chamber which will detect any moisture present. It is recom-
mended 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.
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
600
0.60
6.0
C-3.4) 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 Prosser Service Center.
MODEL
NO
HP
VOLT
PH
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
4SED3024L
3
230
1
1750
A
26.0
59.0
10/4
SO
0.75
See Note 1
4SED3034L
3
230
3
1750
E
18.2
56.0
10/4
SO
0.75
1.43
4SED3044L
3
460
3
1750
E
9.1
28.0
10/4
SO
0.75
5.71
4SED5024L
5
230
1
1750
A
39.0
96.0
8/4
SO
0.83
See Note 2
4SED5034L
5
230
3
1750
D
26.8
80.0
10/4
SO
0.75
0.71
4SED5044L
5
460
3
1750
D
13.4
40.0
10/4
SO
0.75
2.85
4SED7534L
7.5
230
3
1750
D
28.0
126.0
10/4
SO
0.75
0.43
4SED7544L
7.5
460
3
1750
D
14.0
63.0
10/4
SO
0.75
1.72
4SED10034L
10
230
3
1750
D
38.0
160.0
8/4
SO
0.83
0.35
4SED10044L
10
460
3
1750
D
19.0
80.0
8/4
SO
0.83
1.45
Winding Resistance ± 5%, measured from terminal block.
Pump rated for operation at ± 10% voltage at motor.
Moisture & Temperature sensor cord for ALL models is 18/5 SOW, 0.476 (12) ± .02 O.D.
NOTES:
1. Emerson Winding Resistance, 0.30 Main - 1.20 Start
2. Emerson Winding Resistance, 0.65 Main - 1.01 Start
