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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)
Contents
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
Submersible Motors
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.
Application • Installation • Maintenance Manual