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Power-Flo Pumps & Systems • 877-24PUMPS • www.powerflopumps.com
Electrical Connections
Power/control cables -
The power and
control cables mounted to the pump
must not be modified in any way except
for shortening to a specific application.
Any splice between the pump and
the control panel must be made in
accordance with the electric codes. It
is recommended that a junction box, if
used, be mounted outside the sump or be
of at a minimum Nema 4 construction if
located within the wet well.
DO NOT USE
THE POWER CABLE TO LIFT PUMP.
Always rely upon a Certified Electrician for
installation.
Thermal Protection:
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 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 that an
overtemperature condition and/or motor
starter coil to stop pump.
In the event of an overtemperature,
the source of this condition should be
determined and repaired immediately.
Thermal protection shall not be used as a
motor overload device. A separate motor
overload device must be provided in
accordance with NEC code.
WARNING! - 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
600
0.60
6.0
Moisture Sensor:
To detec any moisture present a normally
open (N/O) probe is installed in the seal
chamber. The probe should be connected
in series to an alarm device or motor starter
coil to alert the operator that moisture has
been detected. A Gems Warrick® (or equal)
moisture detection relay, part number
IDIEO, is an acceptable relay. (See Fig 2)
Check the probe leads for continuity, (∞
resistance = no moisture). Also check
the junction box and control panel for
moisture content as this may induce a
false signal.
IF MOISTURE DETECTION
OCCURRES, MAINTENANCE SHOULD BE
DONE TO IDENTIFY AND REPAIR.
Wire Size:
If longer power cable is required consult
a qualified electrician for proper wire
size.
Pre-Operation
1. Check Voltage and Phase
Compare the voltage and phase
information stamped on the pump
name plate.
2.
Check Pump Rotation
- Improper
motor rotation can result in poor
pump performance and can damage
the motor and/or pump. Check
rotation on three phase units by
momentarily applying power and
observe the “kickback”.
Kickback should always be in a
counter-clockwise direction as
viewed from motor end or opposite
to impeller rotation. Incorrect rotation
for Single-Phase pumps is unlikely.
If the rotation is incorrect contact
factory.
3.
Name Plate
- Record the information
from the pump name plate to
drawing in front of manual for future
reference.
4.
Insulation Test
- An insulation
(megger) test should be performed
on the motor. Before the pump is put
into service. The resistance values
(ohms) as well as the voltage (volts)
and current (amps) should be
recorded.
5.
Pump-Down Test
- Be sure pump
has been properly wired, lowered into
the basin, sump or lift station, 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.
Receiving & Installation
PF4SCC, 4SCD, 4SCE, 4SCF
Submersible Cutter Pumps
Figure 2
