Franklin 2007 manual Maintenance All Motors, System Troubleshooting, Motor Does Not Start

Page 51

Maintenance – All Motors

System Troubleshooting

Motor Does Not Start

POSSIBLE CAUSE

CHECKING PROCEDURES

CORRECTIVE ACTION

A. No power or incorrect voltage.

Check voltage at line terminals.

Contact power company if voltage is incorrect.

The voltage must be ± 10% of rated voltage.

 

 

 

 

 

 

Check fuses for recommended size and

 

B. Fuses blown or circuit breakers tripped.

check for loose, dirty or corroded

Replace with proper fuse or reset

connections in fuse receptacle. Check

circuit breakers.

 

 

for tripped circuit breakers.

 

 

 

 

 

Check voltage at contact points. Improper

 

C. Defective pressure switch.

contact of switch points can cause voltage

Replace pressure switch or clean points.

 

less than line voltage.

 

 

 

 

D. Control box malfunction.

For detailed procedure, see pages 46-54.

Repair or replace.

 

 

 

E. Defective wiring.

Check for loose or corroded connections

Correct faulty wiring or connections.

or defective wiring

 

 

 

 

 

 

Check for misalignment between pump

 

F. Bound pump.

and motor or a sand bound pump.

Pull pump and correct problem. Run new

Amp readings will be 3 to 6 times higher

installation until the water clears

 

 

than normal until the overload trips

 

 

 

 

G. Defective cable or motor.

For detailed procedure, see pages 44 & 45.

Repair or replace.

 

 

 

Motor Starts Too Often

A. Pressure switch.

Check setting on pressure switch and

Reset limit or replace switch.

examine for defects.

 

 

 

 

 

B. Check valve - stuck open.

Damaged or defective check valve will

Replace if defective.

not hold pressure.

 

 

 

 

 

C. Waterlogged tank.

Check air charge

Clean or replace.

 

 

 

D. Leak in system.

Check system for leaks.

Replace damaged pipes or repair leaks.

 

 

 

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Contents Submersible Motors Important Information for Installers of this Equipment Commitment to Quality Page Submersible Motors Application Installation Maintenance ManualMounting Position Application All MotorsStorage Frequency of StartsTorque Required Examples Transformer Capacity Single-Phase or Three-PhaseEffects of Torque Transformer CapacityKVA Use of Engine Driven Generators Single-Phase or Three-PhaseUse of Check Valves Engine Driven GeneratorsMotor Water Temperature and FlowFlow Inducer Sleeve Required Cooling FlowMinimum gpm l/m Required for 3 ft/s .91 m/sec Flow Rate Head Loss From Flow Past MotorHot Water Applications Standard Motors Head Loss in Feet Meters at Various Flow RatesHeat Factor Multiplier at 3 ft/s .91 m/sec Flow Rate Service Factor HorsepowerMaximum Water Temperature Hot Water Applications ExampleControl Box and Panel Environment Drawdown SealsGrounding Control Boxes and Panels Grounding Surge ArrestorsQD Relays Solid State Application Single-Phase MotorsWire Control Boxes Wire Motor Solid State Controls250 120180 200Actual Length Formula Two or More Different Cable Sizes Can Be UsedSingle-Phase Motor Specifications 60 Hz 3450 rpm Single-Phase Motor Fuse Sizing Auxiliary Running Capacitors Buck-Boost TransformersBuck-Boost Transformer Sizing Application Three-Phase Motors Three-Phase 60 C Cable 450 140 220150 240 250 400280 150200 250 260Three-Phase 75 C Cable 340 400 490 120 180130 340 420Efficiency % Locked Rotor Amps Three-Phase Motor Specifications 60 HzFull Load Maximum Amps Watts575 Three-Phase Motor Fuse SizingEfficiency % KW Volts Amps Watts100 150 200 175 250 225 125 110 300 17.5 Efficiency Locked Rotor Amps Rating Full Load MaximumDual Element Furnas 60 Hz 4 MotorsHeaters for Overload RelaysNema Heaters for Adjustable 60 Hz 6 MotorsFootnotes for Tables 28, 29, Submersible Pump Installation Check List Date Filled In By Pump MotorIncoming Voltage Power SupplyTransformers Control PanelControls and Protective Devices InstallationInsulation Check Voltage To MotorAmps To Motor 60 Hz 8 Motors Recommended Adjustable Overload RelaysMotor Kvar Required for PF SubMonitor Three-Phase ProtectionPower Factor Correction KVAR Required 60 HzLine Voltage Control Three-Phase Starter DiagramsChecking and Correcting Rotation and Current Unbalance Three-Phase Power UnbalancePhase Converters Three-Phase Motor Lead IdentificationInline Booster Pump Systems Reduced Voltage StartersFeed Water Temperature C Franklin Cable chart See 12. Wiring AIRSource of Cable Ampacity Availability Variable Speed Submersible Pump Operation, Inverter Drives Dimensions Standard Water Well Installation All MotorsSubmersible Leads and Cables Tightening Motor Lead Connector Jam NutPump to Motor Coupling Shaft Height and Free End PlayMotor Starts Too Often Maintenance All MotorsSystem Troubleshooting Motor Does Not StartMotor Runs But Overload Protector Trips Motor Runs ContinuouslyResistance Preliminary Tests All Sizes Single- and Three-PhaseInsulation Resistance Readings Resistance of Drop Cable ohmsNormal ohm and Megohm Values Between All Leads and Ground Checking and Repairing Procedures Power On Single-Phase Control BoxesOhmmeter Tests QD, Solid State Control Box Power OffQD Capacitor Replacement Kits Overload Kits 60 Hz QD Relay Replacement KitsQD Control Box Parts 60 Hz Integral Horsepower Control Box Parts 60 Hz Control BOX Model no Capacitors MFD VoltsOverload Relay Integral hp Contactor Replacement Kits Integral hp Capacitor Replacement KitsIntegral hp Overload Replacement Kits Integral hp Voltage Relay Replacement Kits1 hp QD Relay Control Box Wiring DiagramsHp Standard Hp Deluxe 282 201 Hp X-LARGE Unit Appears Dead Maintenance Electronic ProductsPumptec-Plus Troubleshooting During Installation Pumptec-PlusPumptec-Plus Troubleshooting After Installation QD Pumptec and Pumptec QD Pumptec & Pumptec TroubleshootingSubDrive75, 150, 300, MonoDrive, & MonoDrive XT SubDrive/MonoDrive TroubleshootingSubMonitor SubMonitor TroubleshootingSubtrol-Plus Troubleshooting After Installation Subtrol-Plus Obsolete See SubMonitorGreen Off Time Light on Igbt AbbreviationsPage Page Page Toll Free Help from a Friend