Franklin 2007 manual Tightening Motor Lead Connector Jam Nut, Pump to Motor Coupling

Page 50

Installation – All Motors

Tightening Motor Lead Connector Jam Nut

4" Motors:

15 to 20 ft-lb (20 to 27 Nm)

6" Motors:

50 to 60 ft-lb (68 to 81 Nm)

8" Motors with 1-3/16” to 1-5/8” Jam Nut: 50 to 60 ft-lb (68 to 81 Nm)

8" Motors with 4 Screw Clamp Plate:

Apply increasing torque to the screws equally in a criss-cross pattern until 80 to 90 in-lb (9.0 to 10.2 Nm) is reached.

Jam nut tightening torques recommended for fi eld assembly are shown. Rubber compression set within the

first few hours after assembly may reduce the jam nut torque. This is a normal condition which does not indicate reduced seal effectiveness. Retightening is not required, but is permissible and recommended if original torque was questionable.

A motor lead assembly should not be reused. A new lead assembly should be used whenever one is removed from the motor, because rubber set and possible damage from removal may prevent proper resealing of the old lead.

All motors returned for warranty consideration must have the lead returned with the motor.

Pump to Motor Coupling

Assemble coupling with non-toxic FDA approved waterproof grease such as Mobile FM102, Texaco CYGNUS2661, or approved equivalent. This prevents abrasives from entering the spline area and prolongs spline life.

Shaft Height and Free End Play

Table 41

MOTOR

4"

6"

8" TYPE 1

8" TYPE 2.1

NORMAL

SHAFT HEIGHT

1

1/2"

38.1 mm

2

7/8"

73.0 mm

 

4"

101.6 mm

 

4"

101.6 mm

 

 

 

DIMENSION

SHAFT HEIGHT

1.508"

 

38.30

 

mm

1.498"

 

38.05

 

 

 

 

2.875"

 

 

73.02

 

mm

2.869"

 

72.88

 

 

 

 

4.000"

 

101.60 mm

3.990"

 

101.35

 

4.000"

 

101.60 mm

3.990"

 

101.35

 

FREE END PLAY

MIN

MAX.

0.010"

 

0.045"

0.25 mm

1.14 mm

0.030"

0.050"

0.76 mm

1.27 mm

0.008"

0.032"

0.20 mm

0.81 mm

0.030"

0.080"

0.76 mm

2.03 mm

 

 

If the height, measured from the pump-mounting surface of the motor, is low and/or end play exceeds the limit, the motor thrust bearing is possibly damaged, and should be replaced.

Submersible Leads and Cables

A common question is why motor leads are smaller than specifi ed in Franklin’s cable charts.

The leads are considered a part of the motor and actually are a connection between the large supply wire and the motor winding. The motor leads are short and there is virtually no voltage drop across the lead.

In addition, the lead assemblies operate under water, while at least part of the supply cable must operate in air. Lead assemblies running under water operate cooler.

CAUTION: Lead assemblies on submersible motors are suitable only for use in water and may overheat and cause failure if operated in air.

41

Page 49 Page 51
Image 50
Page 49 Page 51
Contents Submersible Motors Important Information for Installers of this Equipment Commitment to Quality Page Application Installation Maintenance Manual Submersible MotorsFrequency of Starts Application All MotorsStorage Mounting PositionTransformer Capacity Transformer Capacity Single-Phase or Three-PhaseEffects of Torque Torque Required ExamplesEngine Driven Generators Use of Engine Driven Generators Single-Phase or Three-PhaseUse of Check Valves KVARequired Cooling Flow Water Temperature and FlowFlow Inducer Sleeve MotorHead Loss in Feet Meters at Various Flow Rates Head Loss From Flow Past MotorHot Water Applications Standard Motors Minimum gpm l/m Required for 3 ft/s .91 m/sec Flow RateHot Water Applications Example Service Factor HorsepowerMaximum Water Temperature Heat Factor Multiplier at 3 ft/s .91 m/sec Flow RateGrounding Surge Arrestors Drawdown SealsGrounding Control Boxes and Panels Control Box and Panel EnvironmentWire Motor Solid State Controls Application Single-Phase MotorsWire Control Boxes QD Relays Solid State200 120180 250Two or More Different Cable Sizes Can Be Used Actual Length FormulaSingle-Phase Motor Specifications 60 Hz 3450 rpm Single-Phase Motor Fuse Sizing Buck-Boost Transformer Sizing Auxiliary Running CapacitorsBuck-Boost Transformers Application Three-Phase Motors Three-Phase 60 C Cable 250 400 140 220150 240 450260 150200 250 280Three-Phase 75 C Cable 340 420 120 180130 340 400 490Amps Watts Three-Phase Motor Specifications 60 HzFull Load Maximum Efficiency % Locked Rotor AmpsThree-Phase Motor Fuse Sizing 575KW Volts Amps Watts Efficiency %100 150 200 175 250 225 125 110 300 17.5 Rating Full Load Maximum Efficiency Locked Rotor AmpsDual Element Overload Relays 60 Hz 4 MotorsHeaters for FurnasFootnotes for Tables 28, 29, Nema Heaters for Adjustable60 Hz 6 Motors Submersible Pump Installation Check List Date Filled In By Motor PumpControl Panel Power SupplyTransformers Incoming VoltageInstallation Controls and Protective DevicesAmps To Motor Insulation CheckVoltage To Motor Recommended Adjustable Overload Relays 60 Hz 8 MotorsKVAR Required 60 Hz SubMonitor Three-Phase ProtectionPower Factor Correction Motor Kvar Required for PFThree-Phase Starter Diagrams Line Voltage ControlThree-Phase Power Unbalance Checking and Correcting Rotation and Current UnbalanceThree-Phase Motor Lead Identification Phase ConvertersReduced Voltage Starters Inline Booster Pump SystemsFeed Water Temperature C Source of Cable Ampacity Franklin Cable chart See 12. WiringAIR Availability Variable Speed Submersible Pump Operation, Inverter Drives Installation All Motors Dimensions Standard Water WellShaft Height and Free End Play Tightening Motor Lead Connector Jam NutPump to Motor Coupling Submersible Leads and CablesMotor Does Not Start Maintenance All MotorsSystem Troubleshooting Motor Starts Too OftenMotor Runs Continuously Motor Runs But Overload Protector TripsPreliminary Tests All Sizes Single- and Three-Phase ResistanceNormal ohm and Megohm Values Between All Leads and Ground Insulation Resistance ReadingsResistance of Drop Cable ohms Single-Phase Control Boxes Checking and Repairing Procedures Power OnQD, Solid State Control Box Power Off Ohmmeter TestsQD Control Box Parts 60 Hz QD Capacitor Replacement KitsOverload Kits 60 Hz QD Relay Replacement Kits Overload Relay Integral Horsepower Control Box Parts 60 HzControl BOX Model no Capacitors MFD Volts Integral hp Voltage Relay Replacement Kits Integral hp Capacitor Replacement KitsIntegral hp Overload Replacement Kits Integral hp Contactor Replacement KitsControl Box Wiring Diagrams 1 hp QD RelayHp Standard Hp Deluxe 282 201 Hp X-LARGE Pumptec-Plus Maintenance Electronic ProductsPumptec-Plus Troubleshooting During Installation Unit Appears DeadPumptec-Plus Troubleshooting After Installation QD Pumptec & Pumptec Troubleshooting QD Pumptec and PumptecSubDrive/MonoDrive Troubleshooting SubDrive75, 150, 300, MonoDrive, & MonoDrive XTSubMonitor Troubleshooting SubMonitorGreen Off Time Subtrol-Plus Troubleshooting After InstallationSubtrol-Plus Obsolete See SubMonitor Light on Abbreviations IgbtPage Page Page Toll Free Help from a Friend
Top Page Image Contents