Pearl 4MWP Series Installation And Operating Instructions Manual page 20

4” submersible motors
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29.
CBWP - CONTROL BOX - WIRING DIAGRAMS
INSTALLATION AND OPERATION:
Mounting – Be sure that the control box is mounted in a vertical position with the top side up. If it is
mounted in any other position, the starting relay may not function and the overload may trip.
Connections – The control box should be wired to the line and the motors as shown in the diagram.
The pump will not operate without this control box.
Operation without the control box will burn out the motor. Installation of this motor and control must
include circuit and component protection in compliance with U.S. National Electrical Code or Canadian
Electrical Code, Part.1
Protection – Trip of overload indicates a shorted capacitor, voltage problems, an overloaded or
locked pump, or the start relay should be replaced. Reset and analyse for tripping cause.
Do not remove or short out overload protection, since doing so is likely to cause motor burnout.
Use 75° C copper wires/conductors only, 14-10 AWG, tightening torque 20lbs*inch.
For guarantee the Enclosure Type 3R need fix the box using 2 fixing holes.
0.5 – 0.75 1HP 60HZ 115/230 V
How to check the color code of a drop cable (Single-Phase 3-Wire Units)
With an ohmmeter measure:
Cable 1 to Cable 2,
Find the highest resistance reading.
The lead not used in the highest reading is the yellow lead.
Use the yellow lead and each of the other two leads to get two readings:
Highest is the red lead.
Lowest is the black lead.
EXAMPLE:
The ohmmeter readings were:
Cable 1 to Cable 2 - 6 ohms
The lead not used in the highest reading (6 ohms) was Cable 3 so
From the yellow lead, the highest reading (4 ohms) was To Cable 1 so
From the yellow lead, the lowest reading (2 ohms) was To Cable 2 so
Cable 2 to Cable 3,
Cable 2 to Cable 3 - 2 ohms
4MWP
4" Submersible Motors
Cable 3 to Cable 1
Cable 3 to Cable 1 - 4 ohms
Cable 3 = Yellow
Cable 1 = Red
Cable 2 = Black

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