Franklin 2007 manual Submersible Motors, Application Installation Maintenance Manual

Submersible Motors

Application • Installation • Maintenance Manual

The submersible motor is a reliable, effi cient and trouble- free means of powering a pump. Its needs for a long operational life are simple. They are:

1.A suitable operating environment

2.An adequate supply of electricity

3.An adequate fl ow of cooling water over the motor

4.An appropriate pump load

All considerations of application, installation, and maintenance of submersible motors relating to these four areas are presented in this manual. Franklin Electric’s web page, www.franklin-electric.com, should be checked for the latest updates.

Contents

Application – All Motors
Storage	3
Frequency of Starts	3
Mounting Position	3
Transformer Capacity	4
Effects of Torque	4
Use of Engine Driven Generators	5
Use of Check Valves	5
Well Diameters, Casing, Top Feeding, Screens	6
Water Temperature and Flow	6
Flow Inducer Sleeve	6
Head Loss Past Motor	7
Hot Water Applications	7-8
Drawdown Seals	9
Grounding Control Boxes and Panels	9
Grounding Surge Arrestors	9
Control Box and Panel Environment	9
Equipment Grounding	9
Application – Single-Phase Motors
3-Wire Control Boxes	10
2-Wire Motor Solid State Controls	10
QD Relays (Solid State)	10
Cable Selection 2-Wire or 3-Wire	11
Two Different Cable Sizes	12
Single-Phase Motor Specifi cations	13
Single-Phase Motor Fuse Sizing	14
Auxiliary Running Capacitors	15
Buck-Boost Transformers	15
Application – Three-Phase Motors
Cable Selection - 60 °C Three-Wire	16-17
Cable Selection - 60 °C Six-Wire	18
Cable Selection - 75 °C Three-Wire	19-20
Cable Selection - 75 °C Six-Wire	21
Three-Phase Motor Specifi cations	22-26
Three-Phase Motor Fuse Sizing	27
Overload Protection	28-30
Submersible Pump Installation Checklist (No. 3656)
Submersible Motor Installation Record (No. 2207)
Submersible Booster Installation Record (No. 3655)

SubMonitor	31
Power Factor Correction	31
Three-Phase Starter Diagrams	32
Three-Phase Power Unbalance	33
Rotation and Current Unbalance	33
Three-Phase Motor Lead Identifi cation	34
Phase Converters	34
Reduced Voltage Starters	35
Inline Booster Pump Systems	35-38
Variable Speed Operation	39
Installation – All Motors
Submersible Motors - Dimensions	40
Tightening Lead Connector Jam Nut	41
Pump to Motor Coupling	41
Shaft Height and Free End Play	41
Submersible Leads and Cables	41
Maintenance – All Motors
System Troubleshooting	42-43
Preliminary Tests	44
Insulation Resistance	45
Resistance of Drop Cable	45
Maintenance – Single-Phase Motors & Controls
Identifi cation of Cables	46
Single-Phase Control Boxes	46
Ohmmeter Tests	47
QD Control Box Parts	48
Integral hp Control Box Parts	49-50
Control Box Wiring Diagrams	51-54
Maintenance – Electronic Products
Pumptec-Plus Troubleshooting During Installation	55
Pumptec-Plus Troubleshooting After Installation	56
QD Pumptec and Pumptec Troubleshooting	57
SubDrive/MonoDrive Troubleshooting	58
SubMonitor Troubleshooting	59
Subtrol-Plus Troubleshooting	60-61